The organelle responsible for the biosynthesis of proteins that are destined for secretion by the cell is the
A. mitochondria.
B. endoplasmic reticulum.
C. vesicle.
D. lysosome.
E. Golgi apparatus.
Answer: B
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The number of linkage groups in a species that does not have sex chromosomes is:
A. 1n B. 1n + 1 C. 2n D. 2n + 2
Genes that are expressed only when needed are
A) unregulated. B) mutations. C) inducible. D) constitutive. E) anabolic.
At about what point in gestation does the fetal heartbeat become audible by stethoscope and the fetus' movements become easily felt by the mother?
What will be an ideal response?
DNA polymerase assembles new strands in a ____.
A. 5' to 3' direction only B. 5' to 3' direction building one strand and a 3' to 5' direction building the other stand C. 5' to 3' direction building the first half of a strand and a 3' to 5' direction building the second half of a strand D. 3' to 5' direction building the first half of a strand and a 5' to 3' direction building the second half of a strand E. 3' to 5' direction on the “old” 3' to 5' strand