Four of the statements about malaria are true. Which one is FALSE?
a. It is caused by an evolving organism.
b. It is transmitted from person to person by the bite of a mosquito.
c. Its mortality rate is linked to the allele for sickle cell anemia.
d. Its greatest mortality rate is in Africa.
e. Its occurrence in the United States can be traced to ineffective mosquito spraying in the southern states.
ANSWER: e
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Phosphorylating glucose during phase 1 of glycolysis:
A. releases phosphorylated glucose from cells. B. destabilizes the glucose molecule so that it can be broken down in stage 2. C. provides electrons to reduce NAD+ in stage 3. D. provides electrons to reduce FADH in stage 3. E. None of the answer options is correct.
If a cross section of a eudicot herbaceous stem were compared with the cross section of its root the primary difference would be.
A. location of dermal tissue B. location of ground tissue C. location of vascular tissue D. location of terminal buds E. All of the choices are correct
Activation of the sympathetic nervous system
a. speeds up heart beat and respiratory rate. b. increases the flow of watery saliva. c. stimulates peristaltic contractions of the intestinal system. d. slows heartbeat and lowers blood pressure. e. allows the body to relax rather than prepare for fight or flight.
The normal human karyotype contains __________ chromosomes
a. 22 b. 23 c. 44 d. 46 e. 54