Which may pose more of a challenge in data collection: naturalistic observation or participant observation

Q: impact to patience of isolating T cells from blood sample (magnetic beads coated with CD4/CD8…

A: T cells help B- cells to make antibodies, they belong to the immune system called adaptive immune…

Q: What type of gene might change quickly

A: Gene us basic functional unit of of heredity which is on the region of DNA. This is the basis of DNA…

Q: How does the rabies virus spread through the human body after a bite?

A: Introduction :  Viral rabies is a deadly illness. The rabies virus can be carried by animals such as…

Q: What are the steps involved in proper hand washing?

A: Advantages of hand washing:  1. Prevents the Spread of Disease: One of the most important advantages…

Q: . Which capillaries are fenestrated? a. glomerular capillaries  b. peritubular capillaries  c.…

A: Your kidneys hold a distinctive place in the importance of fenestrated capillaries. They are present…

Q: Specific prevention. Exists or not. Briefly explain why.

A: A virus is defined as an infectious microorganism made up of a protein-coated segment of nucleic…

Q: In the lac operon (below), how will expression of the genes lacZ and lacy be effect by a mutation in…

A: Lac operon includes the genes that code for the enzymes involved in the catabolism of lactose sugar.…

Q: Differences in body form among modern humans are likely the result of:     long term genetic…

A: A species goes through a series of changes during evolutionary processes and either adapts to its…

Q: 3. Is the carbon dioxide the nutrient or product, or both in animal cell culturing?

A: Animal tissue culture is an invitro aseptic technique of growing cells on a specific medium. The…

Q: Write at least 2-3 features of each step of respiration metabolism

A: Cellular respiration is the collective name for metabolic processes that help cells produce ATP…

Q: Does chromatin compaction increase or decrease as DNA methylation increases?

A: DNA methylation favours the heterochromatin state and reduces overall DNA flexibility while…

Q: What is the function of the nose in terms of the respiration tract and air being drawn into the…

A: Ans: Nose is the fleshy protrusion in the middle of the face made up of skin and other soft tissues,…

Q: How will the staining appear if if the destaining step were done at high temperature?

A: Staining is a method of selectively colouring the components of a sample, such as a cell or tissue,…

Q: In a dihybrid test cross, the following results were obtained: A‑B‑, 121; A‑bb, 107; aaB­-, 115; and…

A: A dihybrid cross is a type of cross in which two traits are involved . Each trait is illustrated in…

Q: Both caffeine (coffee, cola) and theophylline inhibit the enzyme phosphodiesterase that converts…

A: What is cAMP? cAMP is a second messenger in cellular signaling pathways. During cellular…

Q: Which of the following mechanisms contributes to genetic variation through sexual reproduction via…

A: The genetic variation in sexual selection is achieved by random assortment of homologous…

Q: For each of the following sets of traits and descriptors, give the name of the most specific primate…

A: Primates include eutherian mammals that are terrestrial mammals. They have larger brains, visual…

Q: compare and contrast how GPCRs and RTKs transduce their signal to the cell? include the types of…

A: Receptors are the protein molecules present either on the surface of a cell or inside the cell,…

Q: 8. Populations of snapping shrimp from each side of the Isthmus can now be described as two separate…

A: The populations of snapping shrimps became isolated from each other by the land bridge. Over…

Q: What are defense mechanisms used by each class of Echinoderm?

A: Echinoderms comprise of five classes:   Crinoidea (sea lilies), Ophiuroidea (brittle stars or snake…

Q: How does the means of gas exchange differ by the relative age (evolutionarily) of each group?

A: Gas exchange is the process through which oxygen and carbon dioxide are exchanged between the air…

Q: The same DNA sequence as in Questions # 2-4 is rewritten below (Sequence #1). Sequence #2 is the…

A: Gene mutation is the abrupt change in amino acid coding sequence , critically bringing alterations…

Q: Chains of nucleic acids have directionality and are read in a certain way just like languages are…

A: DNA is the molecule that carries genetic information and is found in nearly all living organisms. It…

Q: Does the Solute inside or outside the cell?

A: Introduction  When two solutions are next to one another and are divided by a semipermeable…

Q: 13. In guinea pigs, the allele for short hair is dominant over long hair. Two short haired guinea…

A: The type of variant present at a specific locus (i.e., region) in the genome is scored by what is…

Q: Let's assume that there is an epiallele in mice that causes their fur to become purple. The…

A: It is defined as a particular methylation pattern that occur in a specific genetic locus. It tells…

Q: In snapdragons, the inheritance of flower color and size of leaves are examples of Incomplete…

A: Homozygous and heterozygous are the terms that are used to describe allele pairs. *Individuals which…

Q: 17. The Hb-1 proteins are likely more flexible than the Hb-2 proteins. O True O False

A: Proteins are very complex molecules that perform a variety of important tasks in an organism's body.…

Q: Why does the endospore retain the green stain, while the ordinary cells do not?

A: It allows the bacterium to produce a dormant and highly resistant cell to preserve the cell's…

Q: 2. Over many generations, the average length of necks in a giraffe population will increase…

A: Introduction Evolution refers to the change of characteristics of a population that can be inherited…

Q: What happens if there is too much p16-ink4a in a juvenile and elderly human? what happens if a…

A: Introduction:- The unregulated and abnormal proliferation of normal cells results into the formation…

Q: will it affect much or less?

A: The Bradford assay is measured at 595nm in spectrophotometer.

Q: Your lab partner set up plate 4 by spreading a pure culture of E. coli onto the plate and addind…

A: Escherichia coli, more commonly known as E. coli, is a type of bacteria that is commonly found in…

Q: Growers often wrap potted plants in plastic sleeves prior to shipping. If plants remain in these…

A: Introduction :  Ethylene is one of the plant growth regulators. Ethylene hormone inhibits the growth…

Q: When endogenous opioids take effect, a long-distance runner experiences shallower breathing a sense…

A: Introduction Opioids originate from the opium poppy plants. Some naturally prescribed opioids are…

Q: 1. In a population of giraffes, the average length of the neck is under stabilizing selection. O…

A: True A extremely short neck makes feeding difficult, whereas a very long neck increases the energy…

Q: How would placing a plant in complete darkness affect the Calvin cycle? A It would inhibit the…

A: Introduction :  Plants, algae, and some microorganisms utilize the process of photosynthesis to…

Q: Select 3 classes from Arthropoda and describe their methods of obtaining food.

A: Arthropoda are invertebrates distinguished by their jointed limbs and cuticle. Arthropoda contains a…

Q: Match the following statements to the type of gene they describe. ✓Encode proteins that promote cell…

A: Tumor supressor genes are those whose deletion or under expression may cause cancer. They include…

Q: Draw three phylogenetic trees (cladograms) depicting the possible relationships between…

A: phylogenetic trees (cladograms) depicting the possible relationships between hemichordates,…

Q: Not all animals have organ systems or even organs. What are the advantages to having specific…

A: the animal doesn't contains organ and organ systems are knows as unicellular organism. it contains…

Q: For this plant with binomial name Ixora coccinea L., What is the reference to the original…

A: Ixora coccinea is a dense, multi-branched evergreen shrub that typically grows to a height of 4-6…

Q: this did not answer d, e, and f of part (c)

A: The enzymes here given are those enzymes which mainly control the metabolism of glucose and…

Q: After sweating through a long marathon, a runner decides to replenish their body fluids by drinking…

A: An athlete is bound to sweat a lot during strenuous exercise like running a marathon.  The sweat…

Q: Discuss the human impacts on aquatic ecosystems

A: Numerous human activities have an adverse effect on the natural environment, including overcrowding,…

Q: Do you believe stress is harmful to your health or part of life? Explain why or why not. Select 2…

A: The answer is YES. Stress symptoms can affect our body, our thoughts and feelings, and our behaviour…

Q: 22 years old man is shot in the back. The bullet transects the spinal cord at T-5 and he becomes…

A: Different parts of the nervous system and brain functions for different voluntary and Involuntary…

Q: Despite a low net primary productivity (NPP), which ecosystem or life zone produces the most biomass…

A: SOLUTION:-   Net Primary Productivity OR NPP:- Net Productivity or NPP is a gross productivity…

Q: 5. Some types of animal would be unsuitable for this method of population estimation (i.e. would not…

A: introduction A population estimate is a calculation of a population's size for the current year or a…

Q: Which of the following cellular events takes place during the S phase of the cell cycle? O…

A: A cell's growth and division are part of a cycle that includes a number of activities. The majority…