________ is the genetic material for all cellular organisms and some viruses.

A. Protein
B. DNA
C. Chromatin
D. RNA


Answer: B

Biology & Microbiology

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Which of the following is not a form of passive transport?

A. Facilitated diffusion B. Diffusion C. Osmosis D. All of the above are forms of passive transport

Biology & Microbiology

The theory of chromosomal inheritance was first proposed by  

A.  Mendel. B.  Morgan. C.  Knight. D.  Sutton. E.  Stern.

Biology & Microbiology

A particular flower can be purple, blue, red, or white. Two different pure-breeding white plants are crossed and the F1 are then crossed to produce an F2 generation. What might a 9:7 phenotypic ratio in the F2 indicate?

A) reciprocal recessive epistasis B) codominance C) dominant epistasis D) recessive lethality E) additivity

Biology & Microbiology

Which of the following are contained in

maternal milk?

a. lactose b. antibodies c. proteins d. digestive enzymes e. all of these are contained in maternal milk

Biology & Microbiology