Prokaryotic cells are smaller than eukaryotic cells. What is a plausible explanation?
A. Prokaryotes lack the genetic material needed for protein synthesis.
B. Prokaryotes have more diverse energy sources.
C. Eukaryotes have compartmentalization, which allows for specialization.
D. Prokaryotic cell walls limit their cell growth.
E. Eukaryotes are immobile allowing them to grow larger.
Answer: C
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A. Greater than zero. B. Less than zero. C. Equal to zero. D. Cannot be determined
Genes isolated from mice or rats can often be used as ____________________ to identify and isolate the human version of the same gene
Fill in the blank(s) with correct word
What are the base-pairing rules for DNA?
a. A-G, T-C b. A-C, T-G c. A-U, C-G d. A-T, G-C e. A-T, G-U
An inducible operon is usually controlled by:
a. an inducer molecule that keeps it in the "off" state. b. an active repressor that keeps it in the "off" state. c. being active at all times. d. allolactose. e. being turned "off," usually by the end product of the pathway