Ribosomes are made up of which kind of nucleic acid?
A) mRNA
B) tRNA
C) rRNA
D) DNA
Answer: C) rRNA
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Which of the following is not involved in the specific targeting of proteins to lysosomes?
a. N-linked glycosylation in the ER b. Mannose phosphorylation c. The mannose-6-phosphate receptor d. Signal patches
A prescription medication lists a rare side effect of impairing the movement of smooth muscle. This medication could potentially affect the:
A) walls of the small intestine. B) heart. C) muscles that move your arms and legs. D) muscles that move the eyeballs.
Match the letter of each example from childbirth to the appropriate component of a positive feedback loop.A. Pituitary gland secretes oxytocin, which acts on the uterusB. Uterine contractions increaseC. Fetus is pushed against uterine openingD. Receptors detect stretchE. Brain receives and compares stretch informationStimulus
What will be an ideal response?
Invertebrates include __________.
a. all animals except those in the phylum Vertebrata b. only animals that have hydrostatic skeletons c. all animals without backbones d. all animals without an endoskeleton e. only animals that have exoskeletons