At the arteriole end of the capillary, more fluid leaves
the capillary than enters as a result of
a. osmotic pressure.
b. hydrostatic pressure
c. gap junctions.
d. vasodilation.
e. all of these.
Answer: b
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The primary difference between estrous and menstrual cycles is that _____
A) the endometrium shed by the uterus during the estrous cycle is reabsorbed with no extensive fluid flow out of the body, whereas the shed endometrium of menstrual cycles is excreted from the body B) behavioral changes during estrous cycles are much less apparent than those of menstrual cycles C) season and climate have less pronounced effects on estrous cycles than they do on menstrual cycles D) copulation normally occurs across the estrous cycle, whereas in menstrual cycles copulation only occurs during the period surrounding ovulation
You experimentally change the DNA sequence directly upstream of a start codon of an operon in E. coli to investigate the function of this region of DNA
Analysis reveals that after the change the same amount of mRNA is made from the operon, but there are very few proteins made from the operon. What is the most likely function of the DNA sequence that you changed? A) The DNA sequence likely functions as a ribosome-binding site. B) The DNA sequence likely functions as a promoter. C) The DNA sequence likely functions as a termination sequence. D) The DNA sequence likely functions as in transcriptional regulation.
If the multiregional hypothesis of human origins is correct, modern human populations last shared a common ancestor around ____ years ago. If the out-of-Africa hypothesis is correct, we last shared a common ancestor around ____ years ago
Fill in the blank with the appropriate word.
Which cellular shape is seen among members of domain Bacteria that is not found among the domain Archaea?
A. Comma shaped B. Spiral or corkscrew shapes C. Cocci D. Bacilli