Biology, 24.03.2020 04:31 missheather0309
A varicocele is an abnormal enlargement of veins in the pampiniform plexus which may hinder blood flow through the pampiniform venous plexus into the testicular vein. The reduced venous drainage and the resulting elevated testicular temperature may be caused by .
a. defective venous valves in the testis
b. elevated systemic arterial blood pressure
c. elevated core body temperature
d. reduced testicular arterial blood flow
Answers: 3
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Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels
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Biology, 22.06.2019 16:00
Prior knowledge can be gained from personal experience and a) forming well-developed hypotheses. b) listening to opinions of other people on a topic. c) researching previous experiments and results on a topic. eliminate d) no other methods. it can only be gained by personal experience.
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Biology, 22.06.2019 21:40
According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this? a. this implies that dna and proteins aren't essential in cells today. b. this implies that rna can catalyze any chemical reaction that enzymes catalyze. c. this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna. d. this implies that dna and proteins evolved after rna.
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Biology, 22.06.2019 23:50
Apopulation follows a period of decline; overshoot increase; overshoot increase; scarcity scarcity; dieback
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A varicocele is an abnormal enlargement of veins in the pampiniform plexus which may hinder blood fl...
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