The total collection of alleles in a population at any one time makes up that population's ________.
A. heterozygote frequency
B. gene pool
C. allele frequency
D. genotype
B. gene pool
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Cyanobacteria and purple bacteria both obtain energy from light. However, only the ________ are capable of releasing ________
A) cyanobacteria / organic compounds B) cyanobacteria / oxygen C) purple bacteria / organic compounds D) purple bacteria / oxygen
Answer the following statements true (T) or false (F)
1. The internal structure of procaryotic flagella is the same as the internal structure of eucaryotic flagella. 2. The internal structure of eucaryotic cilia is the same as the internal structure of eucaryotic flagella. 3. The production of endospores by bacteria is a reproductive mechanism. 4. Bacteria never have cilia and eucaryotic cells never have pili. 5. The 3-Domain System of classification is based on differences in the structure of transfer RNA (tRNA) molecules.
Microbes that are found in hot springs or other extreme environments are most specifically likely to be
a. Gram-negative. b. Gram-positive. c. archaeans. d. cyanobacteria. e. proteobacteria.
The initiation of the S phase and the M phase of the cell cycle depends on a pair of molecules called _______ and _______.
a. actin; myosin b. Cdk's; cyclin c. ligand; receptor d. MSH; MSH-receptor e. ATP; ATPase