What happens to individuals with defects in regulatory T cells (Treg)?

Q: Biologists classify both ribosomes and spliceosomes as "ribozymes" because ... they both contain…

A: Please follow step 2 for a detailed explanation.

Q: What is the name of DNA-strand exchange mechanism that explains recombination events during meiosis?…

A: Homologous recombination occurs in the prophase of meiosis-I. It is the change of DNA fragments…

Q: Describe modifications of stem with suitable examples

A: It has been discovered that the stems of various plants have been modified to perform different…

Q: Explain the difference between the relative and absolute refractory periods. Briefly describe the…

A: A voluntary muscle fibre contracts when threshold stimulus (optimum stimulus that could generate a…

Q: Is DNA methylation heritable between generations? Why is this difficult to determine?

A: DNA methylation is a epigenetic mechanism which involves transfer of methyl groups on C5 position of…

Q: Superantigens that bind to the T cell receptor CD28 stimulate T cell activation and proliferation in…

A: Superantigens bind to the TCR after adhesion to MHC Class II; there are also two sites on the TCRs…

Q: 1. Explain how a "keystone species" and a "dominant species" are different .

A: Species: A population or population of individuals who have similar features and are capable of…

Q: List at least 5 parasites and indicate each their respective common names. How do you correctly…

A: THE SCIENTIFIC NAME HAS TWO PARTS  GENUS NAME  SPECIES NAME GENUS NAME: WRITTEN FIRST SHOULD BE…

Q: U meet a person who had a chemical liquid in his eyes two minutes ago what to do .A Wash his eyes…

A: Our eyes are very important and delicate organs. It is important to be careful while we are handling…

Q: Over-expression of the bcl-2 gene in a cell is likely to be associated with .. a) an increased…

A: A protein that helps govern whether a cell lives or dies by preventing the cell death process known…

Q: Compare the following situations of seed germination of monggo seeds within five days: - watered…

A: Germination is a process of sprouting of seed, or reproductive part of a plant body after a dormancy…

Q: Synthesis: How does reproductive isolation differ in sympatric modes and allopatric modes of…

A: The reproductive isolation leads to the speciation that results in development of new species from…

Q: ASTIGMATISM usually causes HEADACHE .A true .B false

A:

Q: Let’s say there is an organism with two pairs of alleles, W/w and Z/z, each pair is located on a…

A: Mitosis is a type of cell division that occurs in all the cells except sex cells. Here the…

Q: what is the present microorganism in soft swell spoilage?

A: Food spoilage refers to food that has been damaged orinjured that makes it undesirable for human…

Q: What is autophagic intracellular digestion? Why is this type of intracellular digestion intensified…

A: Introduction - Food is broken down into nutrients including carbs, lipids, and proteins via the…

Q: Cataract causes acute and chronic vision loss .A true .B false

A: Cataracts are induced by oxidative stress and free radical damage clouding the lens. Water and…

Q: A population carries two alleles at a locus. One allele has a very small fitness advantage. What is…

A: Natural selection is process through which species adapt to their environments tend to survive to…

Q: Write a note on economic importance of algae and gymnosperms.

A: Economic Importance Of Algae-  Algae are used as liquid fertilizer, it helps in balancing nitrogen…

Q: List one evolutionary trade-off in members of chordates

A: Chordates are animals of phylum Chordata and kingdom Animalia with remarkable features of having  a…

Q: Identification of Gram-positive cocci: You have isolated a catalase-negative bacterium that doesn't…

A: * CAMP test ala called as Christie Atkins Munch peterson test which is used to identify group B…

Q: 2. Reproductive isolation reduces gene flow between populations. This means that each subpopulation…

A: Reproductive isolation is a strategy to prevent the production of offspring from members of…

Q: What are some examples of secretory cells?

A: Secretory cells- These cells are tall columnar cells which contains secretory granules in their…

Q: Which of the following is TRUE about attenuation?

A: In genetics, attenuation is a proposed mechanism of control in some bacterial operons which results…

Q: What type of motion was exhibited by the Microorganism in pond water and Saccharomyces cerevisiae?

A: There are three types of motion in microorganisms: flagellar movement, gliding, and twitching.…

Q: What makes the protein folding process mysterious? X: There appears to be no intermediate states of…

A: What makes protein folding process mysterious?

Q: Which of the following are true of interferons? Select all that apply. O They are a critical part of…

A: In the inflammatory response to infections, interferons (IFNs) are proteins produced by a number of…

Q: 11. Explain the role of cytochrome c, Bax/Bac, Fas receptor-ligand, caspases, IGFBP3 in causing…

A: Apoptosis or the programmed cell death involves a series of biochemical changes, that ultimately…

Q: What tests or diagnostic tools are done to diagnose Chlamydia trachomatis infection on the EYES?…

A: The basic clinical course of examination will be as follows:- History taking Examination…

Q: Justify the following statements on the basis of external features (i) Underground parts of a plant…

A: (1) Various parts of plants are transformed into underground structures that perform a variety of…

Q: Compare the following situations of seed germination of monggo (Vigna radita) seeds within five…

A: * The monggo is also known as green gram and moong , a plant belong to legume family. *The mung is…

Q: Based ONLY on the feeding relationship in the picture, which one is the limiting factor for the…

A: Food chain is a sequence in which an organism is consumed by another organism resulting in…

Q: Explain the process of transcription. Explain the process of translation.

A: DNA is the genetic material present in the most of the living organisms. according to central…

Q: You are given a MacConkey plate with lactose fermenters Escherichia coli, Enterobacter aerogenes,…

A: Following tests can be applied as follows to differentiate different members of enterobacteraceae.…

Q: Post-translational modifications of proteins include all the following EXCEPT a) alteration to the…

A: Translation is a process in which the RNA is translated into protein.Post translational modification…

Q: Explain briefly the following terms with suitable examples: (i) protonema (ii) antheridium…

A: 1. Protonema- it is the first stage in the cycle of mosses. it is green, branched and frequently…

Q: Why are dissolved toxins different between the upstream samples, the samples from the lake in the…

A: Ever-growing population, urbanization, and modernization are posing problems of sewage disposal and…

Q: The allele types for a single gene are given symbols that represent the organisms genotype.…

A: Introduction - A gene has two or more alleles. Each gene has two alleles, one from each parent. If…

Q: In plant reproduction, fertilization occurs when the male and female sex cells form ______________.…

A: The fertilization is the process of fusion of male and female gamete.

Q: When a protein is being assembled in the monosome, the bond that forms between a newly added amino…

A: Introduction :- Amino acids are the building blocks of proteins. The building blocks of life are…

Q: Which of the following statements is true?

A: The products of photosynthesis are glucose and oxygen. The products of cellular respiration are…

Q: Influenza virus uses______ which is found in the envelope spikes, to adhere to the host cell"

A: * Influenza virus will attacks respiratory system by entering the nose, throat and lungs. *Influenza…

Q: heart

A:

Q: If amounts of bases in a DNA molecule are measured, we find OT = A and C = G. OA = C and G = T. %3D…

A: DNA (Deoxyribonucleic acid) is a genetic material present in the nucleus of eukaryotic cell.

Q: Current examples of edible vaccines treat the following Polio Measles Нерpatitis C None of the above

A: Edible vaccines are made from transgenic plants and animals or contain chemicals that cause an…

Q: Assuming the presence of the complementary strand, what is the percentage composition of the polymer…

A: When one strand of DNA is used as a template to create a new strand, the complementary strand is…

Q: Suppose two parents are healthy carriers of the sickle cell allele. The genotype of each parent is…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: Somatic stem cells are best described as ...

A: Since  the cells are somatic they would not divide through out life. They are not at dysregulated.…

Q: Checkpoint Factors Needed Duration CDK needed to materials/ (Present or molecules proceed with the…

A: The cell cycle involves the series of stages through which a cell undergoes when it grows and…

Q: Osteocytes are bone cells. Collagen fibers and calcium salts are found in abundance between and…

A: Earlier osteoblasts that have become entrenched in the bone are known as osteocytes. Osteocytes are…

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.