To amplify and express a gene of interest, it must first be cut out of the chromosomal DNA and inserted into what? A) restriction enzyme B) agarose gel C) vector D) none of these

Why is glucose not a direct source of cellular energy?

What happens during periods

A particular environment has enough food to support 50 rats through the winter. At the end of winter one year, there are 25 female rats and 25 male rats. Each of the 25 females gives birth to several litters of 3-6 pups each.

The outward appearance of a particular trait is called the.

In humans, the allele for hemophilia, h, is recessive. Which phenotype is displayed in an individual with the genotype XHY? a woman who does not have hemophilia a man who does not have hemophilia a woman who has hemophilia a man who has hemophilia

What is the name of the process cells membrane pinching in the center to form two daughters cells

Which of the following is an example of an organism maintaining homeostasis? 1. A cat grooming itself 2. A bear nursing her cubs 3. A man sweating while he runs 4. A boy riding a bike

Which of the following is a characteristic of lipids? (Choice A) AThey are composed of nitrogenous chains. (Choice B) BThey are not soluble in water. (Choice C) CThey are either fats or oils. (Choice D) DThey are polar molecules.

A 3-month-old infant hospitalized with severe diarrhea has excoriated skin in the diaper area. the parents become concerned when they discover that the nurse has left the infant without a diaper. what is the nurse's explanation for this action?

Which of the following is an abiotic factor of an ecosystem? A. weeds B. a rabbit C. soil D. a snake