A protistan engulfs a macromolecule via a vesicle. Which organelle could fuse to this vesicle and aid in breaking down this molecule?
a. Lysosome
b. Vacuole
c. Smooth ER
d. Ribosome
Answer: a. Lysosome
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A researcher determined that a strain of E. coli is producing a shortened version of a protein required for glucose metabolism. What type of mutation could be responsible for this shorter than normal protein?
A. nonsense mutation B. missense mutation C. silent mutation D. sense mutation E. frameshift mutation
What is the frequency of the B allele?
A) 0.001 B) 0.002 C) 0.100 D) 0.400 E) 0.600
What results from the process of translation?
a. tRNA b. mRNA c. A polypeptide d. Ribosomes
Which of the following represents a pair of homologous structures?
A) the wing of a bat and the scales of a fish B) the wing of a bird and the front legs of a horse C) the antennae of an insect and the eyes of a bird D) the wing of a bat and the wing of a butterfly