Evidence for similarities between Archaea and Eukarya includes the
A) absence of introns from genes in both groups.
B) fact that both contain circular DNA without histones.
C) presence of peptidoglycan in the cell walls of both groups.
D) fact that both have several kinds of relatively complex RNA polymerases.
Answer: D
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Identify the part of the atom that most determines the chemical properties of the atom
A) The number of shells B) The number of protons C) The number of neutrons D) The number of electrons
An atom that has gained electrons is a
A. reactant. B. negative ion. C. positive ion. D. compound ion.
Where are lipids made in the cell?
a. Golgi apparatus b. ribosomes c. mitochondria d. rough endoplasmic reticulum (ER) e. smooth endoplasmic reticulum (ER)
Insulin stimulates cells to take in glucose by facillitated diffusion, so insulin receptor-down regulation
increases the ability of cells to take in glucose. __________________ Indicate whether the statement is true or false.