The size of a eukaryotic ribosome is ________.
A. 70S
B. 40S
C. 80S
D. 50S
E. 30S
Answer: C
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Which one of the following nitrogenous bases is not found in an RNA molecule?
A) adenine B) guanine C) thymine D) uracil
In plant cells, the first sign of cytokinesis is the formation of a cell plate instead of a cleavage furrow. The cell plate is formed because plant cells
A. have a cell wall. B. don't divide after mitosis, but become one larger cell with multiple nuclei. C. have a nucleus. D. don't have a cell membrane. E. All of the answer choices are correct.
The first animals to show cephalization have several characteristics. Which of the following is NOT one of them?
a. These animals were triploblastic. b. These animals had a proboscis. c. These animals were in phylum Platyhelminthes. d. These animals are placed in the group Lophotrochozoa. e. These animals followed the protostome pattern of embryonic development
In the cytoplasm, microtubules serve as tracks along which vesicles and other organelles move due to
What will be an ideal response?