Which of the following correctly matches the trimester to the immune modality important for it?
A. First Trimester - TH1 Response
B. First Trimester - TH2 Response
C. Second Trimester - Inflammation
D. Third Trimester - TH1 Response
E. Third Trimester - TH2 Response
Answer: D. Third Trimester - TH1 Response
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Heavy metals in contaminated soils can be taken up by hyper-accumulating plants. Lead and cadmium taken up this way are often accumulated in the plants'
A. rhizomes. B. trichomes. C. stomates. D. sclerenchyma. E. root nodules.
Two evolutionary hypotheses on the function of fever have been suggested: A fever may reflect manipulation of the host by the pathogen, to the pathogen's benefit, or a fever may be an adaptive response by the host to help to control the pathogen
itself. Studies on whether the use of fever-reducing drugs were helpful or interfered with the body's ability to fight the pathogen ________. A) supported the hypothesis that fevers are a manipulation of the host by the pathogen B) supported the hypothesis that fevers are an adaptive response to the pathogen C) supported both of these hypotheses, but in different contexts D) were inconclusive
The sex of birds, some insects, and other organisms is determined by a ZW chromosomal arrangement in which the males have like sex chromosomes (ZZ) and females are ZW (similar to XY in humans)
Assume that a recessive lethal allele on the Z chromosome causes death of an embryo in birds. What sex ratio would result in the offspring if a cross were made between a male heterozygous for the lethal allele and a normal female? A) 4:1 male to female B) 1:2 male to female C) 1:1 male to female D) 2:1 male to female E) 3:1 male to female
A piece of evidence in favor of including Sahelanthropus tchadensis (Toumai) with the hominins rather than apes is that the species was likely:
A) carnivorous. B) related to Neanderthals. C) tree dwelling. D) bipedal.