Transovarian transmission is a process in which
A) a pathogen infects the ovaries of the host.
B) a pathogen is transmitted to the host when the host ingests contaminated eggs.
C) an infected female vector transmits the pathogen to the eggs forming in its ovaries.
D) the pathogen is transmitted from an infected male to a healthy female during mating.
E) the pathogen is spread from one host to the next by unprotected sexual intercourse.
C
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A taxon that includes a single common ancestor and all its descendants is a _____ group
A. monophyletic B. paraphyletic C. polyphyletic
Free nerve endings detect all of the following EXCEPT
a. touch. b. pressure. c. heat. d. pain. e. light.
Using Table 10-2 values, (a) what do you predict from the standard reduction potentials about the direction electrons will tend to flow between NADH and O2,
and (b) using the equation calculate the standard free energy change (?G°) associated with the transfer of electrons between NADH and O2. Reaction: O2 + 2 NADH + 2H+ = 2 H2O + 2 NAD+ Equation: ?G° = ?nF?E0' [n is the number of electrons transferred; F is the Faraday constant (23,062 cal/mol-V)
The fluid portion of the chloroplast is called the ________.
A. cytoplasm B. thylakoid C. matrix D. gel E. stroma