How do muscles in the body become bulkier?
a. The blood supply to the muscles will increase their size
b. The body will recruit additional muscle cells from other areas of the body.
c. The muscle cells will increase in size.
d. None of these choices.
e. The muscle cells will increase in number.
c
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What conclusions are consistent with these data? (Select all that apply.)
A researcher is studying the rII locus of phage T4. Three rII- strains are obtained: A, B, C, and D. In the first experiment, E. coli strain K(?) is coinfected with two rII- strains simultaneously and the results are recorded. Infection with A and B phage = plaques form Infection with A and C phage = plaques form Infection with B and C phage = no plaques form Infection with B and D phage = no plaques form Infection with C and D phage = no plaques form In a second experiment, coinfections are performed first in E. coli strain B, then the progeny phage are used to infect E. coli strain K(?). Progeny of A and B phage = plaques form Progeny of B and C phage = plaques form Progeny of C and D phage = plaques form Progeny of B and D phage = no plaques from A) Strains B and D both carry the same mutation. B) Strains B, C, and D carry mutations in the same gene. C) Strain A carries a mutation in a different gene than strains B, C, and D. D) Strains A and B carry mutations in the same gene. E) Strains B and C both carry the same mutation. F) A, B, C, and D carry mutations in the same gene.
Which structure, A, B, C, or D, is the developing neural tube?
1.A
2.B
3.C
4.D
The relationship between mean annual precipitation (MAP) and aboveground net primary productivity (ANPP) is ANPP = 0.50 × (MAP) + (70 ) in mm MAP and (g/m2/yr) for ANPP in grassland systems
If precipitation is currently 1000 mm and MAP increases by 25 percent, then ANPP will be approximately A) 570. B) 625. C) 695. D) 713.
Imagine you are entering a darkened cavern. You are excited, but also a little nervous. Your heart rate quickens, your blood pressure rises slightly, and your digestive system activity decreases as blood is diverted to your muscles-all changes that prepare you should you need to move rapidly. This type of change is an example of:
A. positive feedback control. B. open loop feedback. C. negative feedback control. D. feedforward regulation. E. a failure of homeostasis.