Which of the following genes are present in mitochondrial genomes but absent in chloroplast genomes?

a. oxidative phosphorylation genes
b. rRNA genes
c. tRNA genes
d. all of the above


Answer: A

Biology & Microbiology

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The effect of an insertion or deletion of a small number of nucleotides depends on (select all that apply):

A. whether it occurs in a coding region or non -coding region of the DNA. B. its size. C. whether it occurs in a germ-line cell or somatic cell. D. whether it involves purine or pyrimidine bases. E. where it occurs on a chromosome.

Biology & Microbiology

All mammals live on land.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Which of the following is the homeostatic

control for respiration?

a. carbon dioxide concentrations b. oxygen concentrations c. ATP concentrations d. activity rates e. more than one of these is the homeostatic control for respiration

Biology & Microbiology

The three stress hormones are _____

a. cortisol, FSH, and LH b. epinephrine, cortisol, and FSH c. norepinephrine, cortisol, and FSH d. epinephrine, norepinephrine, and cortisol e. epinephrine, norepinephrine, and FSH

Biology & Microbiology