The double helix of dna is which level of structure?

a. primary

b. secondary

c. tertiary

d. quaternary

In a particular species of butterfly, the genes for two different traits, antenna shape and antenna color, are located on the same chromosome. As a result, crosses between these butterflies do not obey one of Mendel's laws.

What is lactase used for? A. It is used to make sugar-free milk. B. It hydrolyses lactose to glucose and fructose. C. It improves the digestion of milk by some people. D. It decreases the acidity of the milk.

The diagram below represents two cells viewed using the same magnification with the same microscope. One possible conclusion that can be drawn about the activity of these two cells is that

Which best is found only in dna adenine guanine cytosine thymine

What is the inner material of a cell

Choose one concrete example of a cells response after its signal has been received and describe it.

What object is used to focus light in a light microscope

What is an allosteric site? 1) The site on an enzyme where the substrate binds. 2) The area on a competitor molecule that inhibits an enzyme reaction.

How does the purpose of the krebs cycle differ from the purpose of the calvin cycle?

Which hormonal deficiency would increase the client's risk for fractures?