In comparison, selective permeability and active permeability both involve allowing substances to pass through.
In contrast, selective permeability only allows some select substances to pass through whereas active permeability involves allowing all substances to pass through.
What are selective permeability and active permeability?Selective permeability refers to the property of a substance in which the substance only allows select substances to pass through it.
Substances that possess the property of selective permeability are called selectively permeable substances. An example of such a substance is the cell memebrane which is a selectively permeable membrane.
Active permeability refers to the property of a substance in which it easily allows the substance to pass through it without selection.
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HELP. QUESTION: Do we learn from our mistakes using pesticides that contained DDT was very effective in controlling insect pests on many crops. It was subsequently banned because of this harmful side effect
A. Soft egg shells
B. Bioaccumulation
C. Birth defects in baby chicks
D. Death of small mammals
DDT was subsequently banned despite being very effective when used as pesticides because of its harmful side effect of: (B) bioaccumulation.
DDT has the full form Dichlorodiphenyltrichloroethane. It was a very commonly used pesticide or insecticide. It is a crystalline chemical compound. Apart from bioaccumulation, DDT was also responsible for the decrease in the reproductive rate of birds due to thinning of eggshells.
Bioaccumulation is the phenomenon where the intake of a chemical compound in an organism is more than its excretion or breakdown. In this phenomenon, the chemical agent quantity keeps building up gradually with time in an individual. Pesticide and pollution are the two most common reasons for bioaccumulation.
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1. Evolutionary Theory
Which statement is NOT part of evolutionary
theory?
a All species are related through descent from
common ancestors.
b. Species change over time, sometimes
developing into new species.
c. Species develop traits they need to survive in
their environment.
d. Species have adapted to environmental
changes over billions of years.
Answer: c. Species develop traits they need to survive intheir environment.
exposure of zebrafish nuclei to cytosol isolated from eggs at metaphase of mitosis resulted in phosphorylation of nep55 and l68 proteins by cyclin-dependent kinase 2. nep55 is a protein of the inner nuclear membrane, and l68 is a protein of the nuclear lamina. what is the most likely role of phosphorylation of these proteins in the process of mitosis? exposure of zebrafish nuclei to cytosol isolated from eggs at metaphase of mitosis resulted in phosphorylation of nep55 and l68 proteins by cyclin-dependent kinase 2. nep55 is a protein of the inner nuclear membrane, and l68 is a protein of the nuclear lamina. what is the most likely role of phosphorylation of these proteins in the process of mitosis?
They are involved in disassembly of nuclear envelope.
A nucleus, as related to genomics, is the membrane-enclosed organelle inside a cellular that incorporates the chromosomes. An array of holes, or pores, in the nuclear membrane lets in for the selective passage of sure molecules (which includes proteins and nucleic acids) into and out of the nucleus.
The nucleus is composed of diverse systems namely nuclear envelope, nucleoplasm or nucleus sap nuclear matrix, chromatin and nucleolus. The nuclear membrane paperwork an envelope like structure around the nuclear contents and is normally referred to as a nuclear envelope.
The primary features of the nucleus are to store the mobile's DNA, maintain its integrity, and facilitate its transcription and replication.
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during mid-pregnancy, the brain increases about six times in size and develops many new neurons in a process called .
Answer:
During mid-pregnancy, the brain increases about six times in size and develops many new neurons in a process called
neurogenesis
Explanation:
Have a nice day^^
if an individual who is homozygous for type b blood marries a heterozygous type a individual, what is the chance that their first child will have type ab blood?
50%. Red blood cells with blood group a antigens have anti-B plasma antibodies. Plasma from people with blood group B contains anti-A antibodies and B antigens. Blood group O has both anti-A and anti-B antibodies in the plasma but no antigens.
What about blood groups?Your blood type is determined by the genes you inherited from your parents.Each of the eight different blood types can either be RhD positive or RhD negative.The eight most frequent blood types are A+, A-, B+, B-, O+, O-, AB+, AB-. In addition to the A and B antigens, the Rh factor is a protein that can either be present (+) or absent (-).The least common blood types are B negative (B -ve), which make up just 1.5% of the population. AB negative, or AB -ve, which makes up 0.6% of the population. AB +ve, which is present in 3.4 percent of the population. Red blood cells that are type O negative are thought to be the safest to give to anyone in a life-threatening situation or when there is a shortage of blood that is exactly the right match. Because type O negative blood cells lack antibodies to A, B, or Rh antigens, this is the case. Rh-null is one of the rarest blood types in the world. Due to the absence of any Rh antigens, this blood type can't be Rh negative. Less than 50 individuals have this blood type. Sometimes, it is referred to as "golden blood."Learn more about blood groups here:
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the resulting cultures were then plated on dropout medium containing streptomycin. why was streptomycin added?
Since patients who have previously received treatment for TB are more likely to have developed some form of drug resistance, streptomycin is added to first-line regimens.
What does adding streptomycin accomplish?A number of bacterial illnesses, including tuberculosis, Mycobacterium avium complex, endocarditis, brucellosis, Burkholderia infection, plague, tularemia, and rat bite fever are treated with the antibiotic drug streptomycin.
What was treated by streptomycin?A prescription drug called streptomycin is used to treat the signs and symptoms of moderate-to-severe diseases like tuberculosis. You can take streptomycin by itself or in combination with other drugs. Aminoglycosides are a class of medications that includes streptomycin.
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Why isn't there more information about the dangers of sugar?
Answer:
Because the dangers are affecting your body slowly and people realize it many time later
Explanation:
Shira observes that the shape of cell a appears normal, while cell b appears swollen and cell c is shrunken. The apparent shrinking of cell c indicates the reaction of the cell to what?.
The apparent shrinking of cell c indicates the reaction of the cell to hypertonic solution.
A cell will lose volume if it is submerged in a hypertonic solution because there will be a net flow of water out of the cell. If a solution's solute concentration is greater than that of the cell and the solutes are unable to permeate the membrane, the solution will be hypertonic to the cell.
Thus, in hypertonic solution the cell will shrink and shape of cell will be deformed.
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during mitosis, a single cell divides to produce two daughter cells. what must happen in the original
DNA replication ought to show up withinside the original mobileular in order that every of the daughter cells has a entire set of chromosomes.
DNA replication is the method through which the DNA molecule of a mobileular is duplicated to shape equal copies of itself.
DNA replication is a ought to for each mobileular this is approximately to undergo cellular division and that is to make sure that every daughter mobileular gets accurate quantity of chromosomes (DNA).
DNA replication takes place withinside the S-section of the mobileular cycle and it permits the daughter cells that outcomes from mitosis to have the identical kind and wide variety of genetic material.
Therefore, DNA replication ought to show up withinside the original mobileular in order that every of the daughter cells has a entire set of chromosomes.
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Humans are made up of many types of cells, and these cells have a broad range of sizes. For example, a type of fat cell called an adipocyte has a radius of approximately 50 um, while a type of heart muscle cell called a cardiomyocyte has a radius of about 15 um. Surface area of a sphere: A = 47m2 Assuming both cell types are perfectly spherical, approximately how many times larger is the surface area of an adipocyte compared to the surface area of a cardiomyocyte? Round your answer to the nearest integer. times Show Calculator
Based on the radius of the adipocyte and cardiomyocyte as well as the ratio of the surface area of an adipocyte and cardiomyocyte, the surface area of an adipocyte compared to the surface area of a cardiomyocyte is 11 times larger.
What is the formula to calculate the surface area of a sphere?The formula to calculate the surface area of a sphere is given below as follows;
The surface area of a sphere = 4πr²Where;
π is a constant = 22/7r is the radius.From the data provided:
The radius of adipocyte = 50 μm
The radius of cardiomyocyte = 15 μm
Surface area of adipocyte = 4 * 22/7 * (50)²
Surface area of adipocyte = 31416 μm²
Surface area of cardiomyocyte = 4 * 22/7 * (15)²
Surface area of adipocyte = 2827.4 μm²
The ratio of the surface area of adipocyte and cardiomyocyte = 31416/2827.4
The ratio of the surface area of adipocyte and cardiomyocyte = 11
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Down's Syndrome is also called Trisomy 21 because affected people have three copies of chromosome 21. How is this possible?
a
In a mistake in mitosis, the fertilized egg has two copies of chromosome 21.
b
In a mistake in meiosis, the fertilized egg has two copies of chromosome 21.
c
Either the sperm cell or the egg cell has one copy of chromosome 21.
d
Either the sperm cell or the egg cell has two copies of chromosome 21.
Answer: D.
Explanation: hope this helps!
which cellular components are precursor metabolites for the construction of macromolecule building blocks?
The building blocks are fatty acids , amino acids , sugars and nucleotides.
These include lipids (or fats), proteins, carbohydrates, and nucleic acids. All of the main kinds of macromolecules share the property of being huge polymers constructed from small repeating monomer subunits.
The majority of macromolecules are constructed from single monomers, often known as building blocks. Covalent bonds allow the monomers to join to create polymers, which are bigger molecules. Monomers produce water molecules as a consequence of this process.
The majority of biological macromolecules are polymers made by connecting monomers, or single molecules, in a lengthy chain. They are created by the polymerization process. In this procedure, two monomers are joined together via dehydration synthesis, or the elimination of a water molecule.
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what is the most fundamental reason that taxonomy changes (sometimes rapidly), at all levels (order, family, genus, species, etc)?
When scientists discover new species that can trade type structures so that you can accommodate them. DNA sequencing has additionally let us discover more about evolutionary relationships.
There are new species of plant life and animals that have steadily developed. consequently, there may be a want to reclassify organisms based totally on their newly discovered trends. the new species have new traits that never existed before; hence, scientists have come up with new methods of category.
The species is the most essential unit in taxonomy and ranks at the bottom of the biological type hierarchy. members of the equal species proportion an equal evolutionary history and are extra carefully related to every apart from they're to some other organisms, inclusive of different contributors of the identical genus.
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which group of mollusks has members with complex brains, intricate sensory organs, and elaborate behaviors?
Cephalopods are a group of mollusks having members containing complex brains, competitive behaviors.
What are cephalopods?
Cephalopods, as we know, are members of mollusk class. Few examples are the squid, octopuses, nautilus, or cuttlefish etc.
These marine species have a bilateral body, prominent head, multiple arms/ tentacles that have come from the primitive mollusk foot.
Today’s cephalopods are mostly known for their multiple arms and so soft bodies, the older, ancient cephalopods were notorious for their shells. That is because they are preserved very well as fossils.
Therefore, cephalopods are the group of mollusks containing members with complex brains and elaborative behaviors.
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Which process is responsible for producing sex cells?
What differences in structure would be necessary in order for each limb to accomplish its specific functions
Cells must be specified and committed to make the limbs. For a limb to be formed, the specific muscle cells for the limbs should be formed. The limbs of different animals vary.
What is cell specification?Cell specification is a phenomenon in which the cell is committed to a certain function and can't change it. In the zygote stage, the cell is not committed to any particular function, but as the cells multiply, they begin to commit to a particular cell type. Cells such as the muscle cells of the limb should be specified and committed to the particular structure that is required for the limb. The minimum structures for the limb are structures to move, to make living place by digging the soil etc. so the limb should have nails, claws , digits etc.
Hence, because no specific animal limb is mentioned, cell specification and commitment are the result of the limb's specific structural features.
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Did sun wukong / monkey king use cloning? How?
Yes, Sun Wukong / monkey king uses cloning.
From any of the hairs on his body, Sun Wukong/Monkey King can produce clones. The Chinese Legend of Sun Wukong is the inspiration for The Monkey King. The only troops that can duplicate themselves are It and the Witch.
Cloning is a separate skill that the Monkey King possesses in addition to being a function of the staff. Based on the lore, RWBY's Sun Wukong character may create clones utilizing the game's magic system as opposed to his hair as in the literature.
The Monkey King often referred to as Sun Wukong, is a legendary mythical entity most known for appearing as one of the primary characters in the 16th-century Chinese classic Journey to West and numerous subsequent works and adaptations.
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How is recycling paper similar and different to how an ecosystem recycles nutrience.
Answer:
Its decomposition
Explanation:
When an organism dies fungi and bacteria break it down to gain nutrients and return nutrients to the soil, just like how paper is broken down over time except there are no nutrients gained.
Unlike birds and mammals, fish and reptiles grow their entire lives. What feature of their bone development is different from that of humans?
Answer:
I think their tail and fins
Which of these responses is used by a herd of deer and a school of fish for protection from predators?
O grouping
O hibernation
O migration
O camouflage
Answer:
Which of these responses is used by a herd of deer and a school of fish for protection from predators?
A. grouping
Explanation:
There are two example of grouping:
1. Forming a herd: Many animals, such as deer, wildebeests and zebras, form herds as a defense mechanism against predators. By staying in a group, individuals increase their chances of detecting predators and have a higher likelihood of survival. When a predator approaches, the herd can quickly scatter in different directions, making it difficult for the predator to target a single individual.
2. Forming a school: Fish, such as sardines and anchovies, often form schools as a defense mechanism. By swimming together in a tightly packed group, they create the illusion of a larger organism, which can confuse and deter predators. Additionally, swimming in a school provides better visibility for each individual, increasing their chances of detecting predators and escaping.
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connect the optimal ph of each enzyme to their location in the body. Does each optimal ph make sense for those locations? Why or why not?
Each enzyme has an ideal pH, but it also has a range of different ph within which it can continue to function. The lipase will determine this. The stomach's acidity causes the pepsin enzyme to break down proteins.
What is enzyme made of?Proteins called enzymes were made up of amino acids connected by one or more peptide chains. The fundamental structure of a polypeptide refers to this arrangement of amino acids. This in turn determines the enzyme's three-dimensional structure, including the active site's shape.
What is the function of enzyme?Enzymes, which are proteins, help speed up the metabolism of our bodies' chemical reactions. While certain chemicals are generated, others are decomposed. Everything that is alive contains enzymes. Naturally, enzymes are produced by our bodies.
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a wound in which the epidermis is scraped away with minimal bleeding, such as commonly occurs when a child falls on his knees on a sidewalk, is called ano:
A wound in which the epidermis is scraped away with minimal bleeding, such as commonly occurs when a child falls on his knees on a sidewalk, is called a(n): abrasion.
What is abrasion?Abrasion is a wear that occurs on the skin due to frictional friction. A slight injury occurs that can cause a small bleeding or secretion in the injury. It is not a serious type of wound, it is something very superficial and minimal that can be treated with certain care.
Therefore, we can confirm that the correct option is: abrasion.
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A wound in which the epidermis is scraped away with minimal bleeding, such as commonly occurs when a child falls on his knees on a sidewalk, is called a(n):
Abrasion.
Contusion.
Avulsion.
Evisceration.
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which of the following characteristics of the structure of dna was determined directly from x-ray diffraction photographs of crystallized dna? question 9 options: the frequency of a versus t nucleotides the sequence of nucleotides the double helical structure the length of a given dna molecule
The double helical structure of DNA was determined directly from X-ray diffraction photographs of crystallized DNA.
Watson and Crick are credited with discovering the structure of DNA, but Rosalind Franklin's discoveries played a crucial role in assisting them in doing so. Rosalind Franklin and Francis Wilkins used X-ray crystallography to study DNA to determine its structural properties. An X pattern was observed in the Franklin and Wilkins diffraction pattern, which suggested a two-stranded helical form of DNA. They also inferred that the helix's diameter must also be consistent with the patterns' consistency.
So, the correct option is "DNA has a double helix structure."
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(complete question)
Which of the following characteristics of the structure of DNA was determined directly from X-ray diffraction photographs of crystallized DNA?
a. the length of a given DNA molecule
b. the sequence of nucleotides
c. the double helical structure
d. the frequency of A versus T nucleotides
using fluorescent microscopy, you observe the expected results, with protein secretion in normal cells, er accumulation in mutant a, and golgi apparatus accumulation in mutant b. you also express the gfp-fusion protein in double-mutant yeast cells containing mutations in both the gene underlying mutant a and the gene underlying mutant b. what is the correct location and explanation for where the gfp-fusion protein will accumulate in these a and b double-mutant yeast cells?
Using fluorescent microscopy, you observe the expected results, with protein secretion in normal cells, er accumulation in mutant.
Clathrin as well as adaptor protein complexes, typically assemble on the cytoplasmic side of membranes and make up the coats of caveolin vesicles. While assembling into a lattice-like structure resembling a basket, clathrin functions structurally by deforming the membrane and promoting vesicle budding.
Every protein starts its production in the cytoplasm. However, some are moved to other cellular locations while the majority remain there permanently. Certain are entirely produced in the cytoplasm.
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Question Which type of sedimentary rock is formed from mineral grains precipitated by evaporation?
Responses:
A)chemical
B)intrusive
C)clastic
D)organic
Chemical sedimentary rock is formed from mineral grains precipitated by evaporation.
Option A is correct.
What kind of sedimentary rock is generated from mineral grains precipitated by evaporation?When the amount of water lost by evaporation surpasses the entire amount of water from rainfall and water influx from rivers and streams, layered crystalline sedimentary rocks known as evaporites are produced.
What kind of sedimentary rock precipitates right out of the water?Minerals that accumulate in saline water form chemical sedimentary rocks. The bodies of organisms are used to form organic sedimentary rocks. Particles the size of sand make up sandstone.
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Answer:
A)chemical.
Explanation:
it was correct on test
In many animals, glucose rather than starch, is transported by the blood through the body to all the cells. Starches in many foods are digested to yield glucose. Based on what you learned in this laboratory activity, explain why the digestion of starch to glucose is necessary.
Answer:
So, to answer your question, digestion of starch to glucose is necessary because enzymes and transport molecules require small, regular molecules to manipulate, and because glucose serves as the basis for most carbohydrate metabolism.
Explanation:
hope it hepls;)
Why is it necessary for DNA to replicate?
A. DNA has to replicate to give more location from which proteins can be created.
B. DNA can break down randomly so more copies ensure that all pieces are present in the nucleus.
C. DNA must be copied before a cell can divide.
Answer: A. DNA has to replicate to give more location from which proteins can be created.
Explanation:
DNA replication needs to occur because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
Image: biologydictionary.net
The process of DNA duplication is called DNA replication. Replication follows several steps that involve multiple proteins called replication enzymes and RNA. In eukaryotic cells, such as animal cells and plant cells, DNA replication occurs in the S phase of interphase during the cell cycle.
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
what are the building blocks of starch
Answer:Glucose is the building block for starch (amylose and amylopectin). Lactose: Disaccharide also known as milk sugar. Consists of glucose and galactose.
Explanation:
Glucose molecules form the basis of starch. Complex carbohydrates made up of long chains of glucose molecules are called starches.
A simple sugar called glucose serves as a building block for more complex carbs. In starch, glycosidic linkages are used to link multiple glucose molecules. These connections result in a macromolecule that can store energy in plants that have both linear and branched architectures.
The primary source of dietary carbohydrate is starch, which is present in many plant-based foods such as potatoes, grains and legumes. When starch is ingested, the body's enzymes break it down to produce glucose, which can be used as an energy source.
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5. You are asked to catalogue several species by their life
strategies. What criteria would you use to determine the
predominant life strategy of each species?
Criteria that would use to determine the predominant life strategy of each species will be examining each species' life span, sexual maturity age, and the number of offspring produced throughout a reproductive cycle.
The fundamental unit of biodiversity, a species also serves as the taxonomic rank and classification of an organism. A species is frequently described as the biggest group of organisms in which any two individuals of the right sexes or mating types can successfully reproduce sexually and result in fertile offspring.
The karyotype, DNA sequence, shape, behavior, or ecological niche of a species are other methods to define it. Due to the inability to study fossil reproduction, paleontologists also employ the chronospecies idea.
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Where do human cells get most of the energy they need for metabolism?
Answer:
As we have just seen, cells require a constant supply of energy to generate and maintain the biological order that keeps them alive. This energy is derived from the chemical bond energy in food molecules, which thereby serve as fuel for cells.
Explanation:
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