The specialized membrane proteins that actively transport sodium and potassium ions across the plasma membrane are known as the ________

A) sodium-chloride pump
B) sodium-manganese pump
C) sodium-potassium pump
D) sodium pump


C

Biology & Microbiology

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A mutation in which the fate of cell lineages is not synchronized in an organism is called a ____

A. heterochronic mutation B. apoptotic mutation C. homeotic mutation D. homeobox mutation

Biology & Microbiology

In most eumetazoans the middle tissue layer during development is the

a. mesoderm. b. epiderm. c. mesoglea. d. endoderm. e. ectoderm.

Biology & Microbiology

A cow converts the energy of glucose into the energy of ATP. What happens to most of the energy in that conversion?

a. It remains with the glucose – it can’t be extracted. b. It is lost as heat energy. c. It is within the ATP molecule. d. It is recycled back into glucose. e. It is utilized in other metabolic pathways.

Biology & Microbiology

Sticky ends are so named because ____

a. they are single stranded and will base pair with complementary sequences b. covalent bonds spontaneously form between them to form a continuous DNA molecule c. primers hybridize to them during the first step of PCR d. they hybridize to a DNA sequence of interest e. they stick to invading viral DNA

Biology & Microbiology