For the molecule that is impermeable, is diffusive equilibrium possible?

a. Yes
b. No


b

Biology & Microbiology

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The organelle that best enables an athlete's tissues to be metabolically active are

A. ribosomes. B. lysosomes. C. smooth endoplasmic reticulum. D. mitochondria. E. contractile vacuoles.

Biology & Microbiology

Relative to the NAD+ molecule in the illustration, how many hydrogens does the NADH molecule possess?



a. one fewer
b. two more
c. one more
d. two fewer

Biology & Microbiology

A three-base sequence, found on the bottom loop of tRNA, that is complementary to a sequence of three bases in mRNA is a(n)

A. terminator. B. amino acid attachment site. C. promoter. D. codon. E. anticodon.

Biology & Microbiology

Which of the following statements concerning the causative agent of syphilis is TRUE?

A) It is a large helically coiled bacterium motile by means of endoflagella. B) It is an intracellular parasite. C) It is a non-motile comma-shaped bacterium. D) It is a large bacillus with peritrichous flagella. E) It is pleomorphic and motile by means of gliding motility.

Biology & Microbiology