People with oxidative phosphorylation disorders suffer a lack of energy that can lead to diminished function of nerve and muscle cells. The organelle most likely to be altered in oxidative phosphorylation disorders is the:
A) rough endoplasmic reticulum.
B) chloroplast.
C) cytoskeleton.
D) mitochondrion.
E) cell wall.
Answer: D
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Humans cannot survive at sea by drinking salt water. However, marine vertebrates such as sea turtles and various sea birds can survive by drinking salt water. What do they have that humans do not?
A. Kidneys that are extremely good at producing a concentrated urine B. Body fluid concentrations that are similar to or greater than those of seawater C. The ability to secrete salts and wastes into their intestinal contents like an insect D. They use ammonia as their primary nitrogenous waste E. Salt glands
Which of the following is not evidence for the endosymbiotic theory?
A) Chloroplasts and mitochondria contain ribosomes that resemble prokaryotic ribosomes. B) Chloroplasts and mitochondria contain their own DNA that resembles prokaryotic DNA. C) Chloroplasts and mitochondria have structures that resemble prokaryotic cell walls. D) Chloroplasts and mitochondria reproduce using binary fission, like prokaryotic cells.
Fungi that can grow as a mold or as a yeast are referred to as
What will be an ideal response?
Priming of replication of double-stranded DNA does not require
a. a primase. b. SSBs. c. a replicase. d. DNA ligase. e. a free 3?-OH.