Which order do salamanders and newts belong to?
A. Urodela
B. Apoda
C. Edentata
D. Chiroptera
E. Anura
Answer: A
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Suppose that the team of scientists conducted the following experiment: They mixed the PR proteins with DNA in a test tube and measured the amount of protein that bound to the DNA after 10 minutes under variable amounts of light. What was the independent
variable in their experiment? A) the amount of light that they exposed the test tube to B) the amount of PR proteins bound to DNA C) the type of PR proteins used in the experiment D) the amount of time the light was exposed to the test tube
Negatively charged subatomic particles that have almost no mass are called
A. polymers. B. neutrons. C. ions. D. electrons. E. protons.
An independent individual that possesses the characteristics of life is called a(n)
a. cell. b. organism. c. organ. d. tissue. e. atom.
A polysome is
a. one of the units of a ribosome. b. the nuclear organelle that synthesizes RNA. c. an organelle that functions similarly to a ribosome during meiosis. d. the two units of a ribosome considered together. e. an mRNA molecule with several ribosomes attached.