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You're in a restaurant thats divided into "smoking" and "nonsmoking" sections. There's a partition between the two sections, but the partition doesn't reach the ceiling. Despite the fact that you're seated in the nonsmoking section, you're bothered by the smell of cigarette smoke during your meal. Explain why the cigarette smoke was present in the nonsmoking section of the restaurant. In your explanation, use the following terms: diffusion, molecules, higher concentration, and lower concentration.
Why would atherosclerosis result in a heart attack? Provide a brief explanation based on how the heart functions. How are arteries different from veins and capillaries? Describe the functions of both.
Why human diversity & biodiversity in general is a vitally important factor in this ongoing battle between viruses and cells.
If a transferrin receptor has a cross-sectional area of 50 Angstroms X 100 angstroms (5x10nm), and how many receptors could be accomodated in a 100nm clathrin-coated vesicle assume that only 50% of surface area can be occupied by proteins.
Define the term nutrition and state the types of nutrition
In cattle, coat color may be white, black, or black and white spotted. When true breeding white cattle are crossed with true-breeding black stock, the F1 is all solid white.
In a population of mountain lions, 9% of the individuals suffer from a disease caused by a recessive allele (aa). Calculate the frequency of both the dominant and recessive alleles.
Movement of chloride ions across the cell membrane from the the outside of nerve cells to the inside has a delta-G of about 1.1 kcal/mol even in the presence of a gradient. Why is the gradient alone not enough to get the ions into the cell? (Think..
HIV reverse transcriptase, a critical target in modern antiretroviral chemotherapy, performs which critical function for the virus.
After digestion carbohydrates such as glucose are absorbed through the villi wall and into the blood stream. Describe in detail how the body then gathers the energy of glucose molecule at the cellular level.
Describe the processes involved in the transformation of solid materials in rock into soluble nutrients in soil. What biological factors can influence the rate of this transformation?
If a cell containing 6 chromosomes undergoes cell division (NOT meiosis) to produce 2 cells, each daughter cell would contain how many chromosomes?
How effective is the treatment? Discuss any barriers to treatment such as side effects or high cost.
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