In which of the following ways are archaea similar to eukaryotic cells?
a. size
b. shape
c. presence of histones
d. DNA polymerases
e. presence of operons
Ans: c. presence of histones
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What traits do green algae and plants have in common?
A. embryos B. chlorophyll a and b C. plastids D. a sporic life cycle E. beta-carotene
Which of the following radioisotopes could be used to accurately date a fossil that is thought to be over 750 million years old?
A. uranium 238 B. carbon 14 C. uranium 235 D. uranium 235 or uranium 238 E. carbon 14 or uranium 235
Research with the herpes virus herpesvirus 8 focused on the transition from ____
a. G1 to S b. S to G2 c. G1 to G0 d. G2 to prophase e. telophase to cytokinesis.