In my opinion, we can study biology from a microscopic approach to a global approach during pandemics, just like what is happening around us.
How did this occur ?
In biology, the microscopic world and the macroscopic world are related, and they should be given equal attention. Here are some of the things that we are currently doing to address the problem with the pandemic, with the help of our microscopic and global approach:
Inside the laboratories around the world, scientists are using a powerful electronic microscope to study the structure of the virus that causes COVID-19.Whenever they learn something new, the information would be forwarded to governments around the globe. This will prompt them to decide what actions to take.Every information given by the scientists are relayed to the public.The cycle continues, until a breakthrough is finally discovered on how to eliminate the virus.To know more about Pandemics from the given link
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what is hemosiderin? group of answer choices an enzyme that helps in absorption of iron a protein that carries iron in the blood a storage protein for iron another term for ferritin the part of iron that is not used by the body
Hemosiderin is a storage protein for iron another term for ferritin
The correct answer is option C
Lysosomes and partly digested ferritin are the components of a complex that stores iron and is known as hemosiderin or hemosiderin. Heme breakdown leads to the production of biliverdin and iron. The body then catches the liberated iron and stores it as hemosiderin in tissues.
It only exists in cells and seems to be a combination of ferritin, denatured ferritin, and other compounds (as opposed to circulating in blood).
Hemosiderin deposits have very little iron in them, although it may be added as needed. Hemosiderin may be identified histologically using Perls' Prussian blue stain. When potassium ferrocyanide is applied to hemosiderin, the iron turns from blue to black. Without using particular stains, hemosiderin deposits are frequently insignificant in normal animals because of their small size.
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which of the following statements are fundamental to the clonal-selection theory of how the adaptive immune system functions? i. each mature lymphocyte has a unique membrane receptor that recognizes one antigen.\
The statements that "Each lymphocyte has a unique membrane receptor that recognizes one antigen.", "When the lymphocyte binds an antigen, it is activated and begins dividing to form many identical copies of itself.", and "Cloned cells descend from an activated lymphocyte and persist even after the pathogen is eliminated." are TRUE about the clonal-selection theory.
Clonal selection is a theory used in immunology to explain how lymphocytes behave when certain harmful microorganisms containing antigens enter the body.
An antigen is any molecular region of a harmful microorganism that is recognized by specific molecules of the immune system. B. Antibodies.
In this process (clonal selection), an individual her B or T cell recognizes an antigen and then selects them to create a clonal population that allows elimination of antigen-bearing microbes.
In summary, the statements that "lymphocytes have receptors that recognize antigens", "lymphocytes become activated when they bind to antigens", and "clonal cells are derived from activated lymphocytes" True
your question is incomplete, but most probably your full question was:
Which of the following statements are fundamental to the clonal-selection theory of how the adaptive immune system functions?
I) Each lymphocyte has a unique membrane receptor that recognizes one antigen.
II) When the lymphocyte binds an antigen, it is activated and begins dividing to form many identical copies of itself.
III) Cloned lymphocytes have slight differences and are selected by the spleen for removal if they do not bind an antigen.
IV) Cloned cells descend from an activated lymphocyte and persist even after the pathogen is eliminated.
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TRUE/FALSE. categorizing things involves assigning items to categories. identifying themes takes those categories a step further, grouping them into broader themes or classifications.
True. Categorizing things involves assigning items to categories and is an important tool used in organizing information.
Categorization is essential in making sense of the world around us, allowing us to make decisions and draw conclusions based on the information we have. It is a basic form of organizing and understanding data, and it can help us to better understand complex topics or situations.
Identifying themes takes categorizing things a step further. Themes are broader classifications that help us to see how different categories of information might be related. Through identifying themes, we can begin to look at the bigger picture and draw connections between seemingly unrelated topics or items.
Identifying themes is a powerful way to gain insight into a situation or group of items. It allows us to draw connections between seemingly unrelated items, and it can provide us with a clearer understanding of the data we have. It is also a valuable tool for brainstorming and problem-solving, as it allows us to come up with creative solutions by looking at the bigger picture.
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How do you transcribe a DNA sequence into mRNA?.
A DNA molecule is double-stranded. One strand of the molecule is the template strand and one is called the coding strand this way we can transcribe a DNA sequence.
Transcribing a gene sequence into RNA is the transcription process. This copy, which is referred to as a messenger RNA (mRNA) molecule, leaves the cell nucleus and moves to the cytoplasm, where it directs the creation of the protein it encodes. Using a gene's DNA as a template for complementary base-pairing during transcription, the RNA polymerase II enzyme catalyzes the creation of a pre-mRNA molecule, which is then processed to form mature mRNA. A gene's DNA sequence is "rewritten" in RNA during translation. Further processing steps are required in eukaryotes to convert RNA to messenger RNA, or mRNA. The nucleotide sequence of the mRNA is "translated" during translation into the amino acid sequence of a polypeptide.
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a. (10) let palindromedfa be the language of all encoded dfas that accept sr if they accept s. prove that palindromedfa is a turing-decidable language.
A palindrome is a sequence of words, numbers, phrases, or other symbols, read back and forth as follows:the words madam or racecar, the date/time stamps 11/11/11 11:11
S = {(M) | M is a DFA that accepts w whenever it accepts the inverse of w.}
DFA example on S:
A DFA that accepts any string.
To show that S is decidable, we construct the determinant D of S as
TM A) to determine the EQDF:
D = “On input (M)
1. Construct an NFA M' such that L(M') = {ωˣ| ω ∈ L(M)}
2. Convert M' into an equivalent DFA Mⁿ
3. Use C to compare L(Mⁿ) and L(M)
4. If L(Mⁿ) = L(M), accept. Else, reject.
In the TM above, step 1 can be done by transforming M to M'.
in finite steps.
The idea is to (i) reverse the direction of all transition arrows in M, and (ii) create new state q' in M', and connect q'.
For each original final state of M with an ε-transition,
(iii) Make the original starting state of M the final state of M'. Easy to check that L(M') = {ωˣ |ω ∈ L(M)}.
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chromatin remodeling a promoter in a genome is a dnase-resistant site. which of the following events could convert the site to a dnase hypersensitive site? check all that apply the level of a transcription factor that binds a nearby enhancer increases.the level of a transcription factor that binds a nearby enhancer increases. a histone deacetylase modifies histone tails in the vicinity of the promoter.a histone deacetylase modifies histone tails in the vicinity of the promoter. a remodeling complex uses atp to move nucleosomes to expose the promoter.a remodeling complex uses atp to move nucleosomes to expose the promoter. a histone acetyltransferase modifies histone tails in the vicinity of the promoter.a histone acetyltransferase modifies histone tails in the vicinity of the promoter. a remodeling complex uses atp to move nucleosomes to block the promoter.
An online DNase-resistant website is a promoter in a genome. The degree of a transcription problem that binds a nearby enhancer rises the website to a DNase hypersensitive site.
A transcription factor that binds to a neighboring enhancer is present at higher levels. Enhancer sequences upstream or downstream of a related gene can be bound by transcription elements, stimulating or enhancing the transcription of the related gene. A number of the key factors and co-activators that enhancer-specific transcription elements recruit have been found to be crucial in enhancer-promoter interactions. Ldb1, a transcriptional cofactor that is widely expressed, is one of the quality factors that have been examined.
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place each of the molecules in the correct order based on the general flow of genetic information given by the central dogma of molecular biology.
The correct order based on the general flow of genetic information is,
Replication, Transcription, and Translation.
In biological systems, the basic flow of genetic information is sometimes represented with a flowchart known as "the central dogma" (image is attached). Transcription converts DNA information into RNA, while translation converts RNA into proteins. Reverse transcription and replication are two more examples of techniques for the spread of information in various forms. The techniques by which regulatory signals travel between the many layers of molecule types shown in the model and how information is encoded are not, however, directly addressed by this system. Therefore, although the following scheme is almost always a part of any biologist's vocabulary, maybe as a holdover from earlier customs, students should be aware that systems of information transmission are more complex.
The complete question is attached as an image.
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the deforestation of are a serious concern because the biome is a major storehouse for biodiversity, an important reservoir for carbon, and a major producer of atmospheric oxygen.
The deforestation of tropical rainforests is a serious concern because the biome is a major storehouse for biodiversity, an important reservoir of carbon, and a major producer of atmospheric oxygen.
Tropical rainforests are those that develop in areas with a tropical rainforest climate, which means there is never a dry season and all months have an average precipitation of at least 60 mm. These ecosystems are also referred to as lowland equatorial evergreen rainforests.
The tropical rainforest biome is characterized by very high annual rainfall, high average temperatures, nutrient-poor soil, and high levels of biodiversity (species richness). The tropics receive almost direct sunlight, which produces strong solar energy that keeps temperatures between 70° and 85°F (21° to 30°C) high.
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What are the units of hereditary information that are found on chromosomes in the nucleus?.
Genes are hereditary information units located on chromosomes in the nucleus.
A gene is the elementary tangible and functional whole of ancestry. Genes are containing DNA. Some genes serve as an education to form molecules named proteins. However, many genes do not law for proteins. In persons, genes change in intensity from any hundred DNA bases to more than 2 heap bases.
Genes carry instructions that narrate your containers how work and to evolve. Cells are the construction blocks of the carcass. Every some your frame is containing billions of containers cooperation. Genes are organized in constructions named chromosomes. A chromosome is a long DNA molecule accompanying part or all of the historical material of an animal.
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in which of the cellular communication methods would a ligand need to have the longest life? explain your reasoning
In cellular communication methods Endocrine a ligand need to have the longest life. because they must access various body regions.
The management of adult bodily functions, the act of reproduction, and childhood growth and development are all handled by the endocrine system. The endocrine system is responsible for controlling and regulating all of the body's fundamental functions. energy administration. Reproduction.
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Genomic imprinting in mammals appears to primarily affect genes involved in __________.
Genomic imprinting in mammals appears to primarily affect genes involved in germline (sperms or egg cells) ,embryonic and placental development and growth .
What is genomic imprinting ? It is a type of epigenetic phenomenon that leads an impact on expression of genes , which controls whether it would be expressed or not . It is also defined as the process of silencing genes through DNA METHYLATION .
In this the gene expression is silenced by the epigenetic addition of chemical tags to the DNA during egg or sperm formation . In which one copy of the gene is active and other copy of the gene is silenced in a diploid cell in a parental origin dependent manner .
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How can we maintain a healthy sexuality What practices should we do to keep it healthy?.
Talk with your partner about sexual relations. contraception; use of condoms and rubber dams; Be aware that alcohol and drugs can break down your inhibitions and influence your decision-making. Get tested for STDs if you think you're at risk.
How important is it to keep your sexuality healthy?Sexual health is a big part of life. It can and will affect other aspects of health. This includes physical, mental, emotional and social health. Good sexual health means being well informed, caring and respectful of yourself and others.
How would you describe healthy sexuality?Healthy sexuality means having the knowledge and power to express your sexuality in a way that enriches your life. It involves approaching sexual interactions and relationships from a consensual, respectful and informed perspective. There is no coercion and violence in healthy sexuality.
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HeEeLllpp 8.Carbon atoms are important for all of the following reasons except
The one exception to the reasons why carbon atoms are significant is (d) their ability to form ionic bonds.
The periodic element with atomic number 6 is carbon. On Earth, it occurs the most frequently. Stable covalent bonds are created between carbon atoms and other elements. Catenation is the ability of carbon to make four covalent connections with itself.
The non-covalent bonds that are less strong than covalent bonds are ionic bonds. Instead of neutral atoms, two charged atoms join together to form this bond. This bond typically has large variations in electronegativity between the atoms. The atoms are changed over to more electronegative atoms in this place.
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: retroviruses universally use . . . choose one: a. viral reverse transcriptase to make a dna copy that is integrated into the host genome
The retroviruses universally use (a) viral reverse transcriptase to make a DNA copy that is integrated into the host genome.
Retroviruses are the type of viruses that use RNA as the genetic material. Hence when they infect any cell, the RNA first has to be converted into c-DNA and then the further infection takes place. The example of viruses that are retroviruses are: HIV, HTLV-1, etc.
Reverse transcriptase is the enzyme used during the conversion of m-RNA to c-DNA. This phenomenon of conversion is termed as reverse transcription. This enzyme is present in almost all the organisms like viruses, bacteria, animals, and plants.
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Every environment in the world has __________. Select one: access to all inexhaustible natural resources ways to be less dependent on natural resources natural resources native to that area methods to recycle natural resources
Answer:
A.
Explanation:
This is tough but i think it's, Access to all inexhaustible natural resources ways to be less dependent on natural resources.
Genomic imprinting is generally due to the addition of methyl (-CH3) groups to C nucleotides in order to silence a given gene. If this depends on the sex of the parent who transmits the gene, which of the following must be true?
A) Methylation of C is permanent in a gene.
B) Genes required for early development stages must not be imprinted.
C) Methylation of this kind must occur more in males than in females.
D) Methylation must be reversible in ovarian and testicular cells.
E) The imprints are transmitted only to gamete-producing cells
D
The process by which only one copy of a gene in an individual (either from their mother or father) is expressed while the other copy is suppressed is known as genomic imprinting. The correct answer (D) Methylation must be reversible in ovarian and testicular cells.
Genomic imprinting is an epigenetic phenomenon that determines whether genes are expressed or not based on whether they are inherited from the mother or the father. Partial imprinting occurs when alleles from both parents are expressed differently rather than complete expression and suppression of one parent's allele.
Forms of genomic imprinting have been demonstrated in fungi, plants, and animals. In 2014, there were about 150 imprinted genes known in mice and about half that number in humans .
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Where does cell proliferation occur?.
Proliferation is a physiological process of cell division that occurs in almost all tissues, resulting in an increase of the number of cells.
at the age of 25, mr. rahmn was less than 4 feet tall. his short stature was probably influenced by the lack of a growth hormone produced by the
Mr. Rahman is less than 4 feet tall at 25 years old. His short stature may be affected by the lack of growth hormone produced by the pituitary gland.
Growth hormone is a protein hormone that is produced and needed by the body for various growth and development processes, especially increasing height.
Growth hormone is a hormone produced by the anterior pituitary gland or pituitary gland which is located at the base of the brain.
From the pituitary gland, this hormone is released into the bloodstream and then distributed throughout the body. Hormones are not released continuously, but little by little every 3 to 5 hours.
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which of the following is true of an x-linked gene, but not of a y-linked gene?
X linked gene is present in both males and females. X linked genes having patterns such that the inheritance patterns like this that they are different from the kind of pattern found on autosomes.
What is the basic difference between linked and non linked genes ?The basic difference between linked and non linked genes is that the genes which can be better together are called as linked and the genes which are not linked are called as non linked genes.
Y linked genes can only be inherited from the fathers only.
X linked recessive mutations can be passed down to the parents to the child via the mutations like there are many certain mutations that are related to the X linked changes thus the certain kind of mutations that would lead to the dominance of the trait and cause the disorder.
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spotted antbirds (hylophylax naevioides) are capable of catching both small and large insects. when the much larger ocellated antbird (phaenostictus mcleannani) is present, however, spotted antbirds eat only small insects. based on that information, which statement about the spotted antbird is true?
This spotted antibird is more adaptable than the ocellated antibird as it feeds on small insects, ants, moths and cockroaches. These are also known to follow army ant swarms and they catch insects and small animals which are trying to run away.
What do you mean by hylophylax naevioides?
The spotted antbird is a species of bird in the family Thamnophilidae. In southern Central America, it is found in Honduras, Nicaragua, Costa Rica and Panama; also Colombia and Ecuador of northwestern South America. Its natural habitat is subtropical or tropical moist lowland forests.
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Relate the concept of gross and net production to the concept of energy conversion.
the steps in the scientific method do not always occur in the same order. group of answer choices true false
This is false that The steps of the scientific method do not always follow the same order.
The scientific method is an empirical procedure for gaining information that has characterized the happening of wisdom since not completely the 17th of one hundred years It includes careful notes, asking exact skepticism about what is noticed, likely that intelligent assumptions can deform by what method individual interprets the observation.
The steps used in scientific methods must forever be acted in the same order. Though the scientific procedure is frequently bestowed as a fixed order of steps, these conduct are better thought-out as a general standard. Not all steps happen in each scientific asking (nor alike), and they are not always exhausted in the same order.
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the dorsal respiratory group: question 7 options: 1) extends from the brain stem. 2) is located dorsally at the root of cranial nerve ix. 3) ends at the pons-medullary junction. 4) is a rhythm generating center.
At the pons-medullary junction, the dorsal respiratory group comes to a stop.
Where are the ventral and dorsal respiratory groups located?The ventral respiratory group (VRG) is located in the nucleus ambiguus and nucleus retroambiguus, while the dorsal respiratory group (DRG) is situated in the ventral lateral region of the nucleus tractus solitarius.
What center is responsible for the dorsal respiratory group stimulation?The Pneumotaxic Center Shortens Inspiration and Speeds Up Respiration. Signals from the apneumotaxic center are sent to the inspiratory region from its dorsal location in the upper pons' nucleus parabrachialis. Most inspiratory movements and their timing are under the direction of the dorsal respiratory group (nucleus tractus solitarius).
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How large a sample should be selected to provide a 95% confidence interval with a margin of error of 10 (to the nearest whole number)? assume that the population standard deviation is 40.
Sample size: In statistics, the sample size is defined as the number of subjects included in a sample or it is a group of observations that are coming from the population and is considered a representative of the true population.
The margin of Error: The margin of error is defined as a statistic that gives the amount of sampling error in the given study. Also, the margin of error tells the percentage of points that the obtained results would differ from that of the given population value.
The formula for sample size is,
Where,
is the population standard deviation, E is the margin of error and
is the critical value at
level of significance.
The critical value is obtained by the ‘Standard normal table’.
The procedure for finding the Z-value is listed below:
1.From the table of standard normal distribution, locate the probability value.
2. Move left until the first column is reached.
3. Move upward until the top row is reached.
4. Locate the probability value, by the intersection of the row and column values giving the area to the left of z.
Step: 1
Here, the confidence level is 0.95.
From the Standard Normal Table, the required
The value
is obtained below:
That is,
The procedure for finding the z-value is listed below:
1.From the table of standard normal distribution, locate the probability value of 0.05.
2. Move left until the first column is reached. Note the value as 1.9
3. Move upward until the top row is reached. Note the value as 0.06.
4. The intersection of the row and column values gives the area to the two tails of z.
That is,
From a standard normal table, the required
value for the 95% confidence level is 1.96.
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during the elongation stage of translation, the ribosome translocates relative to the mrna and the trnas. this step requires the elongation factor
During the elongation stage of translation, the ribosome translocates relative to the mRNA and the tRNAs. this step requires the elongation factor EF-G and hydrolysis of GTP.
The tRNA with the proper corresponding anticodon will pair with the relevant mRNA codon during the translation's elongation phase. Methionine from the first tRNA joins with the second amino acid from the second tRNA to form a peptide bond, the kind of bond that binds amino acids together.
After then, the ribosome shifts downward, moving in the 5' 3' direction, creating room for a new tRNA to link with its corresponding codon and produce a new peptide bond. The ribosome continues this process by traveling down the mRNA strand and lengthening its amino acid chain as it does so.
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Osmosis is best defined as the movement of
water molecules across a membrane from an area of high water concentration to an area of lower concentration.
The best way to describe osmosis is as the transfer of molecules from a region of high concentration to one of low concentration.
Osmosis: What is it?The best way to describe osmosis is as the movement of water across a semipermeable membrane from a region of high water concentration to a region of low water concentration.
Osmosis in biology is the movement of water molecules through a cell's partially permeable membrane from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules.
Osmosis is the movement of a solvent through a membrane that is semipermeable, dividing two solutions with different solute concentrations. Osmosis is the process by which a solvent is transferred from a solution with a lower concentration of solute to one with a higher concentration.
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1. DNA replication produces two identical DNA molecules, called SISTER CHROMATID(S), which separate during mitosis.
2. After chromosomes condense, the CENTROMERE(S) is the region where the identical DNA molecules are most tightly attached to each other.
3. During mitosis, microtubules attach to chromosomes at the KINETOCHORE(S)
4. In dividing cells, most of the cell's growth occurs during INTERPHASE
5. The MITOTIC SPINDLE(S) is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division.
6. During interphase, most of the nucleus is filled with a complex of DNA and protein in a dispersed form called CHROMATIN
7. In most eukaryotes, division of the nucleus is followed by CYTOKINESIS, when the rest of the cell divides.
8. The CENTROSOME(S) are the organizing centers for microtubules involved in separating chromosomes during mitosis.
DNA replication produces two identical DNA molecules, called SISTER CHROMATID(S), which separate during mitosis.
What is DNA replication?The biological process of creating two identical copies of DNA from a single original DNA molecule is known as DNA replication. All living things replicate their DNA, which is the primary mechanism for biological heredity.
What is mitosis?Chromosomes that have been duplicated are divided into two new nuclei during the cell cycle phase known as mitosis. Mitosis, the process of cell division, creates genetically identical cells with a constant number of chromosomes. Thus, equational division is another name for mitosis.
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the binding of acetylcholine results in a(n) in the motor end plate membrane. group of answer choices graded potential hyperpolarization action potential influx of acetylcholinesterase
The muscle membrane's receptors are bound by the release of acetylcholine. When acetylcholine connects to receptors on the muscle fiber membrane, a multistep molecular process within the muscle fiber starts.
What is acetylcholine's purpose?Acetylcholine is an organic molecule produced by nerve cells to carry messages to other cells, such as neurons and muscle cells, throughout the brain and body of several animal species.
Where on the muscle fiber does acetylcholine attach to receptors?The muscle membrane's receptors are bound by the release of acetylcholine. When acetylcholine connects to receptors on the muscle fiber membrane, a multistep molecular process within the muscle fiber starts.
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In the gal gene system, which protein binds to the activation domain of the activator protein, ultimately blocking transcription in the absence of galactose?.
In the gal gene system , Gal80 protein binds to the activation domain of the activator peotein, ultimately blocking transcription in the absence of galactose.
The transcriptional activator Saccharomyces cerevisiae GAL4 is negatively regulated by the Saccharomyces cerevisiae GAL80 gene. Although GAL4 can still connect to the UAS sequence after being bound by a GAL80 dimer, it can no longer induce transcription.
The GAL4 gene's interaction with GAL80 depends on the 30 amino acids at its C-terminus.
Thus, by combining a transgene or modified endogenous locus encoding a GAL4-based "driver" with a second transgene or modified endogenous locus in which the target gene of interest is located downstream of UAS sequences, GAL80 can be used to further refine the expression pattern of a gene of interest expressed using the UAS-GAL4 binary expression system.
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Plants and algae share a number of similarities but are very different biologically. Sort the characteristics according to whether they apply to plants only, algae only, both, or neither. Reset Help eukaryotes protists can be unicellular or multicellular multicellular producers photosynthetic primarily aquatic primarily terrestrial heterotrophic Plants only Algae only Plants and algae Neither plants nor algae
Answer:
they are diffrent
Explanation:
What are the differences between algae and plants?
How are algae different from plants?
Hey,
1).Algae can be unicellular like euglenoids and green plants or it can be multicellular organism like oedogonium while plants are multicellular.
2).Algae live underwater or on the surface of water and plants basically lives more often times on land.
3).The plant body in algae is always a thallus. It is not differentiated in root, stem and leaves or vice versa for plants.
4).Plant posses vascular system(Xylem and phloem) which helps in transport of water and nutrients while algae do not posses such system.
5).Plants develop embryo and algae do not.
6).Algae can move because of the presence of flagella while plants can't move.
7).Algae can be both autotrophic and heterotroph and basically plants are autotrophic.
Thanks
