membranes of cells. -The pellet included the radioactive viruses (coats and DNA). The pellet contained the radioactive protein coats of the viruses.
In their investigation of the topographic distribution of a radioactive virus following intravenous injection into mice, Libby and Madison1 of the Stamford Research Laboratories, American Cyanamid Company, provided a potential new approach to immunology research. The Born2 and Stanley method was used to create radioactive viruses tobacco mosaic virus (TMV). 3 Seedling tobacco plants, which were between 2 and 3 inches tall, were injected with the tobacco mosaic virus before being put into separate brown glass bottles containing 120 cc of nutritional solution. Then, 18 mg. of sodium biphosphate (Na2HP*O4) containing around 278 microcuries of radioactive phosphorus was added to each container (P32).
Learn more about radioactive viruses by using this link:
https://brainly.com/question/14514840
#SPJ4
it is estimated that decreases productivity because of missed work (due to chronic illnesses and diseases), and the decrease in productivity makes products more expensive because other employees are paid overtime to make up for the hours that are not worked when someone else misses work.
According to estimates, obesity lowers productivity because of missed work (caused by illnesses and chronic conditions), and the higher cost of goods results from the need for other employees to work overtime to make up for lost hours when someone else is absent.
What is the primary reason for obesity?Overeating and insufficient exercise are the usual causes of obesity. If you consume large amounts of energy, especially fat and sugars, without expelling it through exercise and physical activity, a significant portion of it will be stored by the body as fat.
Children and adults alike are affected by obesity. Numerous elements, such as eating habits, physical activity levels, and sleep schedules, can contribute to excessive weight gain. Genetics, certain medications, and social determinants of health are additional factors.
To know more about obesity visit:
https://brainly.com/question/11366349
#SPJ4
which are major advantages that isolated populations might provide for the study of recessive traits?
One benefit of studying recessive traits in isolated communities of populations is that it is simpler to detect a recessive trait there than it would be in a broader population, The expression of a recessive characteristic occurs when an organism possesses two recessive alleles, or gene forms.
Recessive trait are more likely to appear in populations when there is inbreeding. It is therefore accurate to state that inbreeding, a phenomenon common in small populations, raises the probability of recessive characteristics.
learn more about recessive traits here:
https://brainly.com/question/463037
#SPJ4
What 3 things can affect gene expression in an organism?.
Sorry for the late answer but, The three things that can affect gene expression in an organism is light, temperature, and pollution.
Hope this helps!!!!
What is the most common regulatory method used in eukaryotes?.
Transcriptional regulation is the most prevalent regulatory strategy in eukaryotes.
Eukaryotic cells, as opposed to prokaryotic cells, have a wide range of levels at which they can control gene expression. Starting with access to the DNA, eukaryotic gene expression is managed. Eukaryotic repressors bind to specific DNA sequences and prevent transcription, just like their prokaryotic counterparts.cIn eukaryotes organisms, one of the main ways to control gene expression is through the control of transcriptional initiation. The majority of eukaryotic genes are regulated at the transcriptional level by proteins called trans-acting factors that engage with particular gene sequences (cis-acting regulatory sequences).
To learn more about DNA click here:
https://brainly.com/question/21992450
#SPJ4
A key tenet of chemiosmotic hypothesis is that electron transport chains move ________ across the inner mitochondrial membrane (or bacterial plasma membrane).
Protons
When a proton gradient exists, the transport protein ATP synthase helps the hydrogen ions (protons) pass the cellular membrane.
The chemiosmosis hypothesis explains what.According to the chemiosmotic hypothesis, the chloroplast and mitochondria of the cell's mitochondria produce the majority of the ATP needed for cellular respiration.
Why is chemiosmosis a term used to describe what occurs in the electron transport chain?By pumping protons (H+) through the inner membrane and into the intermembrane gap, the ETC creates a significant electrochemical gradient. Then, through a procedure known as chemiosmosis, the protons diffuse back across the membrane along their electrochemical gradient.
To know more about chemiosmotic hypothesis visit:-
https://brainly.com/question/25219986
#SPJ4
Are textual aids that have visual display and show key content information?.
Graphic Organizers are textual aids that have a visual display and show key content information. They basically get rid of the non-important stuff and just highlight the things that are important.
Hope this helps!!!
Select the processes that are used by cells to strip electrons off of the c-h bonds of a glucose molecule.
Krebs cycle and the glycolysis are the processes that are being used by the cells to strip electrons off of the c-h bonds of that glucose molecule.
The tricarboxylic acid cycle (TCA), also known as the Krebs cycle or citric acid cycle, is the cell's primary source of energy and is an important part of aerobic respiration. This cycle harnesses the available chemical energy of acetyl-coenzyme A (acetyl-CoA) to the reducing power of nicotinamide adenine dinucleotide (NADH). The Krebs cycle or TCA cycle (tricarboxylic acid cycle) or citric acid cycle is a series of enzyme-catalyzed reactions that occur in the mitochondrial matrix in which acetyl-CoA is oxidized to carbon dioxide, coenzymes are reduced, and ATP is produced in the electron transport chain. is generated.
Question seems incomplete the complete question is :
Select the given processes that are used by the cells to strip electrons off of the c-h bonds of that of glucose molecule.
a. Krebs cycle ,
b. aerobic respiration ,
c. electron transport ,
d. glucose molecule
To know more about Krebs cycle visit:
https://brainly.com/question/13153590?referrer=searchResults
#SPJ4
which of the following foods is a very good source of vitamin a? group of answer choices whole-grain bread peanut butter butternut squash sunflower seeds pinto beans
Butternut squash is a very good source of vitamin A, thus the correct answer is option (C). Butternut squash.
Foods containing vitamin A include liver, butternut squash, pumpkin, milk, and eggs that have been fortified with vitamins A and D. Plant proteins can be found in red beans in good amounts. It is also known as kidney beans and comes in a variety of colors, including white, cream, spotted, and red beans. They also include fiber and healthy carbs. They aid with weight loss and give the boy protein.
The main source of carbs is rice. The body receives energy from it. Rice comes in a range of colors, including white, brown, and red. Additionally, rice contains fiber, minerals, proteins, and lipids. Due to its lower carb content, brown rice is healthier than white rice.
To learn more about vitamins please click on the given link: https://brainly.com/question/9348916
#SPJ4
Why can't a person with Type A blood safely receive blood from a person with type B blood?.
Explanation: Because your blood contains the A marker, it makes B antibodies. If B markers (found in type B or type AB blood) enter your body, your type A immune system gets fired up against them. This means that you can only get a transfusion from someone with A or O blood, not from someone with B or AB blood.
A person with type A blood cannot safely receive type B blood because the anti-B antibodies in the plasma of the type A recipient would bind to B antigens
Cells are made of organelles, specialized structures that each perform specific functions that help the cell maintain homeostasis. This is much like the body systems work together to help the body maintain homeostasis. Consider the function of the various body systems. Which organelle(s) share functions with the muscular system? select all that apply.
The endoplasmic reticulum, Golgi apparatus, and mitochondria all help to produce and transport proteins, lipids, and other molecules necessary for muscle contraction and relaxation, as well as to produce the energy needed for muscle contraction. Without these organelles, the muscular system would not be able to function properly.
The muscular system is responsible for movement, posture, and balance. Muscles are composed of proteins, which are produced by certain organelles. The endoplasmic reticulum (ER) is an organelle that produces proteins and is therefore integral to the functioning of the muscular system. The ER are important for muscle contraction.
The Golgi apparatus is another organelle that plays a key role in muscle activity. It helps to package and transport proteins and other molecules necessary for muscle contraction and relaxation.
Finally, mitochondria are organelles that are essential to muscle contraction. Mitochondria produce the energy needed for muscle contraction, and they also help to break down nutrients for energy production. They are also involved in the production of ATP, the molecule that provides energy for muscle contraction.
Learn more about organelles at : https://brainly.com/question/2135497
#SPJ4
i need the answer fast ASAP thank you
At the left: At the right:
Chloroplast Lysosome
Nuclear membrane Mitochondria
Nucleolus Cytoskeleton
Nucleus Plasma membrane
Rough endoplasmic reticulum Cell wall
Smooth endoplasmic reticulum Cytoplasm
Golgi apparatus Peroxisome
Vacuole
How are plant cells different from animal cells?Plant cells are cells present in green plants, photosynthetic eukaryotes of the plant kingdom. Their distinguishing features include primary cell walls containing cellulose, hemicellulose, and pectin, the presence of plastids capable of photosynthesizing and storing starch, large vacuoles that regulate turgor, non-gametic flagella or centrioles. Lack of body, and own way. A cell division in which a cell plate or phragmoplast is formed that separates new daughter cells.
A cell wall made of cellulose envelop the cell membrane. Animal cells have only a cell membrane and no cell wall.Animal cells do not have plastids, but plant cells have chloroplasts that capture sunlight for photosynthesis.Animal cells have centrioles, centrosomes, and lysosomes, but plant cells do not.To know more about plant cells, visit:
https://brainly.com/question/1493437
#SPJ1
TRUE/FALSE a mesentery is a double layer of peritoneum that contains blood vessels and nerves traveling to an organ.
The majority of the stomach and related organs are suspended from the posterior body wall by double-layered peritoneal sheets called mesenteries, which also offer paths for blood vessels and nerves to the viscera, which pass between the two layers.
The peritoneum has two layers in the mesentery.The vascular and nerves that connect to the intraperitoneal organs are attached by a mesentery, which is a double layer of peritoneum. One organ or structure within the peritoneal cavity is supported by a ligament, which is composed of two layers of visceral peritoneum.
Is the mesentery two-layered?The serous membranes are adhered back to back in the abdominal cavity's mesenteries, which are double layers of peritoneum that continue the visceral and parietal peritoneum and allow the outside mesothelium to leak serous fluid into the peritoneal cavity.
To know more about peritoneum visit:-
https://brainly.com/question/13020190
#SPJ4
Can a horse be homozygous red?.
No matter the mate's color, a horse that is homozygous red would not produce red offspring.
In a mechanism known as epistasis, the genotypes for the red component decide whether a horse acquires any black as well as brown pigmentation, regardless of the genotypes at the agouti gene.
A horse is considered to be homozygous if he possesses 2 versions of the same gene for a trait, such as E/E & e/e, in which the lowercase letters denote recessive genes and the capital letters denote dominant genes for that feature. When an individual is heterozygous (E/e), both the trait's dominant and recessive alleles are present.
Learn more about inheritance patterns at
https://brainly.com/question/29431087?referrer=searchResults
#SPJ4
why does trisomy x not typically cause serious phenotypic abnormalities in mammals as compared to autosomal trisomies?
It is because X being subject to transcriptional silencing .
Why these conditions occurs ?
Trisomy x is a genetic disorder , not the inherited one .It occurs during the division of reproductive cells . Autosomal trisomy occurs due to mutations that occur during embryonic development when one person has two or more genotypes.
Typically , male have one X and one Y chromosomes (46 , XY ) , while typically females have two X chromosomes resulting in a (46,XX) karyotypes . However , female with trisomy X have an extra X chromosomes 47,XXX karyotype .In that case the extra X chromosome present remains transcriptionally silence , so does not show serious phenotypic abnormalities .
In the case of autosomal trisomy , individuals may have some cells in their body with the 46 chromosomes and others with 47 chromosomes , which creates this condition which shows serious abnormalities .
Hence , due to the above reason there is difference between both the abnormalities shown by them .
To learn more about trisomy from the given linkhttps://brainly.com/question/1008403
#SPJ4
What year did darwin first propose the theory of evolution through natural selection and who was his collaborator?.
The first formal exposition of the theory of evolution by natural selection appeared on 20 August 1858 when Darwin and Russel Wallace's.
What is theory of evaluation?
Theory based evaluation is an approach to evaluation (i.e., a conceptual analytical model) and not a specific method or technique. It is a way of structuring and undertaking analysis in an evaluation. A theory of change explains how an intervention is expected to produce its results.
In general, there are three reasons why evaluations are conducted: to determine plausibility, probability, or adequacy.
To learn more theory of evaluation, click the link below:
https://brainly.com/question/14415422
#SPJ4
Answer:
The first formal exposition of the theory of evolution by natural selection appeared on 20 August 1858 when Darwin and Russel Wallace's 'On the tendency of species to form varieties
two organisms with genotype aabbccddee mate. these loci are all independent. what fraction of the offspring will have the same genotype as the parents? see concept 14.2 (page)
All of the genes in the parental genotype are homozygous. The information provided indicates that both parents have the genotype "aabbccddee" and are homozygous for five genes.
Meiosis during gamete creation would result in the formation of identical gametes from both parents because both parents are homozygous for all of the loci.
All gametes will have a genetic makeup of "abcde" thanks to both parents. The kids will all have the genotype "aabbccddee" as a result of the random fusing of gametes with the given genotype. As a result, the progeny of the given parents will be 100% genetically similar to them.
While the phenotype refers to an organism's physical qualities or traits, the genotype is a group of genes in DNA that are responsible for distinctive traits or characteristics. Their genotype could be used to decipher the human genetic code.
To know more about genotype
https://brainly.com/question/13749929
#SPJ4
Secondary consumers are: (a) Herbivores; (b) Producers; (c) Carnivores; (d) None of these
Carnivores, option (c) is correct. In a food web or chain,
There will be producers like the plants. This is the right response. As their name suggests, they use sunlight to make their own food, as well as nourishment for other species. Then the primary consumers, or herbivores—animals that eat plants like cows, goats, etc.—eat them. The secondary consumers, or carnivores—animals that eat meat like lions, tigers, etc.—then eat the primary consumers.
A food chain is a group of related plants or animals where each organism is consumed as food by another. There are producers, consumers, and decomposers in it.
To know more about Carnivores
https://brainly.com/question/6840302
#SPJ4
An elongated, cigar-shaped feature deposited by a continental glacier and oriented parallel to the direction of glacial flow is called a __________________.
Answer:
drumlin
Explanation:
oval or elongated hill believed to have been formed by the streamlined movement of glacial ice sheets across rock debris, or till. The name is derived from the Gaelic word druim (“rounded hill,” ) and first appeared in 1833.
regarding enveloped viruses, at which point do viral spike proteins insert into the host's cell membrane in order to be incorporated into the new virion? multiple choice question. penetration
A virus with an envelope or outer covering. "Budding off" is the process by which the infected cell, or host, produces this envelope. During the budding process, newly formed virus particles are "enveloped," or covered, by a thin layer of the plasma membrane of the cell.
Enveloped viruses enter host cells in a specific way.Through membrane fusion, enveloped animal viruses enter their host cells. Depending on the characteristics of the virus fusion protein, this fusion can take place at the plasma membrane of the cell or within the endocytic vacuolar system.
Where does the protein replication of an enveloped virus occur?Since these processes, which involve copying RNA to make additional RNA molecules, typically do not occur in cellular organisms, replication takes place in the cytoplasm and is largely independent of the cellular machinery. This is because the particles contain many virus-encoded enzymes that are necessary for RNA replication and transcription.
Learn more about endocytic vacuolar system here:
https://brainly.com/question/6986913
#SPJ4
the coiled tube on the testis that stores spermatozoa is called
Darien's event was not a success. He met with his team and listened to their ideas on how to approach it the next time instead of trying his way again. He showed Authoritarian.
What is Authoritarian?Authoritarian parenting is the situation where parents expects much from their children but give them little or no room to express themselves or do most of what they want.
This tends to affect the child as they are limited to what they want to do and in most cases perform badly as what they are doing is not their choice. Darien's father is applying authoritarian parenting on him as they dictate everything for him giving him little or no room for his choices.
Therefore, Darien's event was not a success. He met with his team and listened to their ideas on how to approach it the next time instead of trying his way again. He showed Authoritarian.
Learn more about authoritarian on:
https://brainly.com/question/3710034
#SPJ1
if a cell includes a mixture of variable numbers of wild-type and mutant organelles, this condition is known as .
If a cell includes a mixture of variable numbers of wild-type and mutant organelles, this condition is known as heteroplasmic.
The smallest unit in biology that can sustain life on its own and makes up all living things as well as bodily tissues. The cell membrane, the nucleus, and the cytoplasm are the three major components of a cell. The cell membrane encloses the cell and regulates the chemicals that enter and exit the cell.
The body creates new cells to replace damaged or dying cells. Cell division is the name given to this process. In order to create and sustain the biological order that keeps them alive, cells need a steady flow of energy. Food molecules' chemical bonds, which act as the fuel for cells, are the source of this energy.
To know more about Cell here
https://brainly.com/question/1593715
#SPJ4
most of mistakes during dna replication are corrected by a. dna ligase b. dna polymerase c. helicase d. gyrase
In this way, DNA polymerase functions as a "self-correcting" enzyme, repairing any polymerization errors as it moves along the DNA.
What corrects mistakes made during DNA replication?By examining the newly inserted nucleotide, DNA polymerase quickly corrects the majority of mistakes encountered during DNA replication The DNA pol reads the most recent base added during proofreading so that a correction can be made before adding the next base.
What purpose does DNA ligase fulfil?DNA ligases play a key role in maintaining genomic integrity by mending breaks in the phosphodiester backbone of DNA that occur during replication and recombination as well as as a result of DNA damage and subsequent repair. Three human genes, LIG1, LIG3, and LIG4, are involved in
To know more about dna replication:-
https://brainly.com/question/16464230
#SPJ4
what is the collimation light field parameters when performing ap and lateral projections fothe sfot tissue neck
A completely collimated light beam would not scatter over distance if there was no divergence. However, any such beam cannot be produced due to diffraction.
The term "collimated" can also refer to particle beams, specifically a series of such absorbing collimators, which are often shielding blocks made of high density materials (such as lead, bismuth alloys, etc.) to absorb or block stray particles from a desired forward direction. Every particle accelerator complex in the world employs this technique of particle collimation on a regular basis. If the necessary reactions are included in any given experimental applications, a different, less well-studied approach of achieving the same forward collimation effect may use strategic nuclear polarization (magnetic polarization of nuclei).
Learn more about to collimation visit here:
https://brainly.com/question/13701030
#SPJ4
TRUE/FALSE. 1. the purpose of the reproductive system is to produce offspring and pass genetic information from one generation to the next.
Whether reproducing sexually or asexually, organisms pass on their genetic material to the young, hence given statement is true.
What is reproduction?Offspring from asexual reproduction have identical genetic makeup. Genetic diversity is produced in children as a result of sexual reproduction.
Their mother passes one copy on to them through the egg, while their father passes the other one along (via the sperm).
Therefore, two copies of each chromosome and two copies of each gene are present when the sperm fertilizes the egg, hence given statement is true.
Learn more about reproduction, here:
https://brainly.com/question/28904310
#SPJ1
harvesting healthy organs and tissues from a person who has just died to transplant them into a living person who needs them is known as
Harvesting healthy organs and tissues from a person who has just died to transplant them into a living person who needs them is known as Organ donation.
What are tissues?Your body is made up of cells, and when groups of cells perform the same function they are called tissues. There are following four main types of tissues: Connective tissue, epithelial tissue, muscle tissue, nerve tissue. Connective tissue connects bones and cushion organs. Epithelial tissue undertakes the outer part of the body. Connective tissue, epithelial tissue, muscle tissue, nerve tissue. Connective tissue supports and binds other tissues (bone, blood, lymphoid tissue).Simply put, tissue can be defined as a collection of cells with similar shape and function called tissue. They form the tissue level between cells and organ systems. Organs are created by combining functional groups of tissues.To learn more about tissues from the given link :
https://brainly.com/question/17664886
#SPJ4
If the primary structure of a protein is changed what happens to the secondary structure.
Proteins are made up of building blocks called amino acids. There are about 20 different amino acids that link together in different combinations.
What do you mean by Proteins?
The primary structure refers to the amino acids in a protein molecule. Changing one of the amino acids can affect whether a protein will form alpha helices or beta sheets during folding. If alpha helices and beta sheets are changed, the interactions between amino acids along the length of the protein will be altered as well, leading to changes in the final 3D structure of a protein experiencing a primary structure change.Protein primary structure is the linear sequence of amino acids in a peptide or protein.Protein secondary structure is the three dimensional form of local segments of proteins.To know more about Protein from the given
https://brainly.com/question/10058019
#SPJ4
in addition to the bladder, which other abdominopelvic cavity organ has an internal mucosa thrown into folds which disappear as the organ fills? group of answer choices
In addition to the bladder, the stomach also has an abdominopelvic cavity organ with internal mucosa thrown into folds that disappear as the organ is filled.
The abdominal cavity and the pelvic cavity make up the abdominopelvic cavity, which is a bodily cavity. The stomach, liver, pancreas, spleen, gallbladder, kidneys, small intestine, and the majority of the large intestine are all located in the upper part of the body, which is called the abdominal cavity. The urine bladder, the remainder of the large intestine (the bottom region), and the internal reproductive organs are all located in the pelvic cavity, which is the lower part.
Hence, stomach is fold organ constrain in abdominopelvic cavity.
To know more about Liver.
https://brainly.com/question/16342711
#SPJ4
What is the definition for a somatic?.
of, relating to, or affecting the body especially as distinguished from the germplasm: physical. : of, relating to, supplying, or involving skeletal muscles. the somatic nervous system. a somatic reflex.
What is the function of proliferative?.
Proliferative refers to the process of cell growth and division. Your oestrogen levels increase throughout this stage. Your endometrium becomes thicker as a result. Additionally, your ovaries get ready to release an egg.
The first day of your menstruation marks the beginning of the follicular phase, which lasts until ovulation. Because increasing levels of estradiol (oestrogen) induce the uterine endometrium lining to proliferate and thicken, the follicular phase is sometimes referred to as the "proliferative phase." Your uterus' lining becomes thicker as a result of the higher oestrogen levels, enabling an embryo to implant there. The proliferative phase is another name for this phase. A drop in FSH is sparked by the elevated oestrogen. Your pituitary gland reduces the quantity of FSH it produces in response to the rise in oestrogen.
To learn more about endometrium click here:
https://brainly.com/question/13064944
#SPJ4
Generalized transduction occurs when
a bacterial cell packages a piece of viral DNA during replication.
specific bacterial genes are replicated by a bacteriophage.
a bacteriophage packages a piece of bacterial DNA during replication.
DNA passes from one bacterial cell to another by a sex pilus.
specific bacterial genes are deleted by a bacteriophage.
A bacteriophage packages a piece of bacterial DNA during replication. Generalized transduction occurs whena bacterial cell packages a piece of viral DNA during replication. specific bacterial genes are replicated by a bacteriophage.
Transduction: DNA is transmitted from one bacteria to another by a virus through a process called transduction. The technique of introducing foreign DNA into a different cell via a viral vector is sometimes referred to as this. Bacteriophages, also called phages, are viruses that only attack and reproduce in bacterial cells. Bacteriophages (BPs) are viruses that may attack and eradicate bacteria without harming human or animal cells.
Learn more about Bacteriophages here:
https://brainly.com/question/13801297
#SPJ4
