Variola virus, the virus known to cause small pox, produces soluble TNF alpha receptors (meaning that these receptors are secreted by the virus). What advantage does the production of a TNFalpha receptor have for avoiding immune response?
i. TNF alpha represents a family of soluble cytokines. By producing soluble receptors that bind to this cytokines, the cytokine effector response is eliminated and only a limited immune response will occur
ii. TNF alpha receptors bind to cells of the immune system and prevent the release of cytokines.
iii. TNF alpha receptors block transcription within infected cells so that new virus particles cannot be made.
iv. TNF alpha receptors bind to cytotoxic T cells, preventinglysis of infected cells.
v. TNF alpha receptors allow an infected cell to become infected by more than one variola virus particle

Answer:

Well, it helps us categorize organisms so we can more easily communicate biological information. Taxonomy uses hierarchical classification as a way to help scientists understand and organize the diversity of life on our planet.

Explanation:

thats why its important

Answer:

true

Explanation:

because we need both

Answer:

because the stays in the vessels

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Answer:  The correct answer is dairy​

Explanation:  This answer has been confirmed correct.

Goat milk is used for making cheese and other dairy products.

Answer:

the sound will travel fastest in a copper pipe

Explanation:

because the liquids in each of the other three answers act like mufflers for the sound which in terms means.thst the sound is slower and quieter.

Answer:

During interphase, the cell grows and DNA is replicated. ... During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase. During the mitotic phase, the duplicated chromosomes are segregated and distributed into daughter nuclei.

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Answer:

The s3x-linked orange locus determines whether a cat will produce eumelanin (black or brown pigment). This gene is located on the X chromosome. The orange allele is O, and is codominant with non-orange, o.

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Answer:

0%

Explanation:

Two genes/loci are linked when they are located on the same chromosome. Recombination, also known as crossing over, refers to the exchange of genetic material between non-sister chromatids during meiosis. One centimorgan (1 cM) is a genetic measurement of the distance between two loci on the same chromosome in which 1% crossing over occurs. In this case, the mother is an unaffected carrier who has one copy of both linked mutations (i.e., of both breast cancer and retinoblastoma mutations), thereby the expected frequency of recombination in the female meiosis is 3% (3 cM). Moreover, and since the father is an unaffected individual (who does not carry any of these recessive alleles) and both breast cancer and retinoblastoma conditions are caused by recessive somatic mutations, the probability of their daughter having both cancers is 0%, (offspring always receive one copy of each autosomal/somatic chromosome from the mother and one copy from the father).

Answer: the hydrogen is a molecule btw

Explanation:

Answer:

Answer:

Ripple Marks Ripple marks are sedimentary structures and indicate agitation by water (current or waves) or wind. Ripple marks are ridges of sediment that form in response to wind blowing along a layer of sediment. They are form perpendicular to the wind direction and each ridge is roughly equidistant from the ripple mark on either side.

Explanation:

Answer:

d.??????????????????

Answer: C!

Explanation:   eukaryotic cells may divide via either mitosis or meiosis. only sexually reproducing eukaryotes can engage in meiosis. all eukaryotes — regardless of size or number of cells — can engage in mitosis.

Having no cell nucleus, archaea do not reproduce via mitosis; rather, they procreate using a process called binary fission. So D AND E are eliminated. And so is B because that has bacteria.

SO FINAL ANSWER; mitosis happens in eukaryotes, plant and animal cells

Answer:

By definition, a CDK binds a regulatory protein called a cyclin. Without cyclin, CDK has little kinase activity; only the cyclin-CDK complex is an active kinase but its activity can be typically further modulated by phosphorylation and other binding proteins, like p27.

Answer:

The geologic time scale is the calendar for events in Earth history. It subdivides all time into named units of abstract time called escending order of duration eons, eras, periods, epochs, and ages.

Answer:

D

Explanation:

Answer:

A characteristic or feature of a substance is called...

a property

Explanation:

Answer:

Insect flight muscles [Mitochondria]

Cells lining the respiratory passages [Cilia]

White blood cells that engulf and destroy invading bacteria [Lysosomes]

Leaf cells of cacti [Chloroplasts]

Goblet cells lining the intestinal tract that secrete mucus [Golgi apparatus]

Pancreatic cells that are responsible for creating several digestive enzymes (proteins) [Ribosomes]

Explanation:

Mitochondria are cell organelles whose main function is energy generation during respiration. They generate energy in the form of ATP which is then used by the cells and tissues for various metabolic function. Mitochondria are abundant in cells whose energy requirements are high such as muscle cells. Therefore, insects flight muscles will have an abundance of mitochondria.

Cilia are finger-like projections on respiratory surfaces whose sweep-like movements help to move particles and fluids out of the airways. In the trachea, the cilia trap particles like bacteria and viruses and then move these trapped particles along with mucus up to the pharynx where it is either coughed out or swallowed into gastrointestinal tract. Therefore, respiratory surfaces like the trachea will have an abundance of cilia.

Lysosome are cell organelles which function to destroy and digest foreign and cellular proteins in the cell. They have an abundance of proteolytic enzymes which degrade proteins at acidic pH. Therefore, white blood cells that engulf and destroy invading bacteria will have an abundance of ysosomes.

Chloroplasts are plant cells organelles which are the sites for photosynthesis. It is abundant in the leaves of plants where photosynthesis mainly take place. Therefore, leaf cells of cacti will have an abundance of chloroplasts.

Golgi apparatus is a cell organelle that helps process and package proteins and lipid molecules, especially those that are to be secreted outside the cell, packaging them into vessicles. They also make and secrete mucus. Therefore, goblet cells lining the intestinal tract that secrete mucus will have an abundance of Golgi apparatus.

Ribosomes are cell organelles whose main function is to synthesize proteins, both for intracellular and extracellular purposes. Proteins such as hormones, enzymes etc, are synthesized by the ribosomes. Therefore, pancreatic cells that are responsible for creating several digestive enzymes (proteins) will have an abundance of ribosomes.

There are different kinds of tissues in the body.

There are known to be 4 main types of tissue. They are: The connective tissue, epithelial tissue, muscle tissue, and nervous tissue. The Connective tissue is known as a tissue that helps to supports other tissues.

The Epithelial tissue gives a form of covering such as skin to the body.

Learn more about tissues from

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Answer:

A monohybrid cross is defined as the cross happening in the F1 generation offspring of parents differing in one trait only. A dihybrid cross is a cross happens F1 generation offspring of differing in two traits.

Explanation:

Answer:

Monohybrid crosses involve one gene; dihybrid crosses involve two genes

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Answer:

We have bacteria that live on us, and bacteria have bacterial viruses that live on them. These viruses are called bacteriophages . Viruses differ from bacteria in that they are not made of cells, but instead consist of a piece of DNA (or RNA) packed within a protein coat. A bacteriophage attaches itself to a susceptible bacterium and infects the host cell. Following infection, the bacteriophage hijacks the bacterium's cellular machinery to prevent it from producing bacterial components and instead forces them cell to produce viral components.

Answer:

D

Explanation:

The sand moves from the storage over to the shore/coastline during The summer, therefore, it's D.

The two types of changes to Earth's surface are erosion of sand from the beach during summer and deposition of sand onto the beach during winter. Therefore, the correct statements are option B and option D.

The model likely shows the effects of seasonal changes on a beach.  During winter, waves and currents tend to deposit sand onto the beach, leading to a wider and more expansive shoreline, whereas during summer, waves and currents tend to erode the sand from the beach, leading to a narrower and steeper shoreline.

During the summer, high-energy waves erode the sand from the beach that lead to the formation of cliffs or other coastal landforms as the waves. and during the winter, lower-energy waves deposit sand onto the beach, that lead to the formation of sandbars or other coastal landforms along the shore.

The addition of sand during the winter months can have positive impacts on beach tourism, whereas in summer, negative impacts were seen on beach tourism.

Therefore, the two types of changes to Earth's surface are erosion of sand from the beach during summer and deposition of sand onto the beach during winter.

Learn more about the Earth's surface here:

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Answer:

Although blood group studies cannot be used to prove paternity, they can provide unequivocal evidence that a male is not the father of a particular child. Since the red cell antigens are inherited as dominant traits, a child cannot have a blood group antigen that is not present in one or both parents.

hope it helps

Explanation:

Although blood group studies cannot be used to prove paternity, they can provide unequivocal evidence that a male is not the father of a particular child. Since the red cell antigens are inherited as dominant traits, a child cannot have a blood group antigen that is not present in one or both parents.

Answer:

It is an example of frequency-dependent selection. Due to several cheaters in the population, the fruiting body's stalk is not made properly. So, all individuals have lesser fitness.

Explanation:

Natural selection:  

The population contains both superior as well as an inferior organism where natural resources are limiting so it will cause competition between organisms. As a result of competition, it will select superiors, and inferiors are deleted and they are given reproductive advantages. Due to this reproductive advantage new population emerges. It is more suitable for the environment.  

Natural selection divides into three parts that are directional, disruptive, and stabilizing selection.

The given question is the example of frequency-dependent selection. Due to several cheaters in the population, the fruiting body's stalk is not made properly. So, all individuals have lesser fitness. Directional selection will not lead to fixation of cheater genotype. This is because cheating can be controlled through high relatedness in social groups, resulting from kin discrimination.  

It is controlled through positive pleiotropy, where the cooperation gene has an additional vital function. Cheating will be controlled if stalk vs. spore is a result of environmental, not genetic factors. An example, spore fate can be a result of the position in the mitotic cell cycle.

Answer:

The monocyclic pathogen follows the black arrows to complete its cycle. Polycyclic pathogens follow the red arrows for the majority of the season and the black arrows at the end of the season. In order for a disease to develop, a pathogen must be present and successfully invade plant host tissues and cells.

Explanation:

here's ur answer bro/sis

Answer:

Explanation:

The class Anthozoa of the phylum Cnidaria includes a wide range of corals and marine animals. Cnidarian polymorphism: Medusa and Polyp are two phases wherein cnidarians vary their morphology for adaption, resulting in them mostly existing as dimorphic zooids. Finally, as the medusa stage develops, these colonial polyps might differentiate into specialized forms.

Medusa forms possess velum, manubrium, defined radial canals, and accompanying ring canal, as well as other components like ocelli and statocysts, demonstrating their adaptability to their survival. Polyp stages have adaptive radiation, including such stolon and structures like hydranth and planula, to help them escape predators. Other structures commonly found include gonangia and gonopore.

Hydra is a kind of freshwater animal belonging to the class Cnidaria. Hydra is diploblastic, which implies it has two tissues: nerve and muscular tissue. Mesoglea is a gel-like material that separates the epidermis and the gastrodermis. Charles Darwin used these finches in his experiments to illustrate how changes in the environment, allelic alterations, and mutation effect affected the species' adaptive radiation.

Answer:

b

Explanation:

Answer:

inherited varietion

Explanation:

i took the test

Answer:

Green color filter

Explanation:

It is given that Duckweed grown on water and covers all part of the pond  very rapidly. In order to limit their growth is proposed to use a color panel so as to shield the ponds and inhibit photosynthesis process and also kill the pests.

So a green colored panels can be used to shield the pond. This is because the photosynthetic pigments such as the chlorophylls absorbs all the green frequencies of the visible light except for the wavelength that corresponds to the green color. Therefore, by using a green filter, the wavelength corresponding to blue, yellow, red and purple colors are absorbed. Thus the plants would not be able to use the green light for the process of photosynthesis. This would help in limiting the growth of the duckweeds.

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Answer:

Egg white and amino acid solution.

Explanation:

Egg white and amino acid solution are the two foods that are used for building of body parts because they have proteins in them that is responsible for the building of muscles of in human body. There are two components of egg i.e. white and yellow part. White is the proteinic part whereas yellow parts having fats and other nutrients. Amino acid solution has amino acids which is considered as the building block from which protein is made.

Answer:

A DNA microarray (also commonly known as DNA chip or biochip) is a collection of microscopic DNA spots attached to a solid surface. Scientists use DNA microarrays to measure the expression levels of large numbers of genes simultaneously or to genotype multiple regions of a genome.