Factors which provide a measure of biodiversity in a particular ecosystem include
A) the total number of species in that ecosystem
B) the variability of the individual genes
C) the relative abundance of each species
D) the number of different habitats being utilized
E) All of the choices are correct.
Ans: E) All of the choices are correct.
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Which of the following is not associated with genital herpes?
A. Recurring genital lesions B. Cervical cancer C. Congenital herpes D. Miscarriages
An action potential in a neuron begins when ____
a. a threshold potential is reached at the trigger zone b. the resting potential is established c. gated sodium channels close d. gated potassium channels close e. neurotransmitters are received by dendrites
The arrows labeled “C” in the figure represent
a. mitosis. b. meiosis. c. germination. d. dispersal. e. none of these.
Bacteriophages are viruses that ____
a. catalyze bacterial reproduction b. attach to bacterial cells and extract bacterial DNA c. interfere with DNA replication in the cytoplasm of cells d. produce histones e. infect and copy themselves inside bacterial cells