The hormone oxytocin stimulates ____
a. meiosis of oogonia
b. ovulation
c. implantation of the embryo
d. development of the fetal heart
e. contraction of uterine muscles during childbirth
e
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From an evolutionary standpoint, which of the following organisms would be the most fit?
a. a tree that produces thousands of seeds, of which three grow to sexual maturity b. a bird that produces offspring, of which three survive to reproduce c. an elephant that has a single offspring that nurses for 8 months and reaches sexual maturity in 10 years d. both (a) and (b)
Three types of cytoskeleton are ___, ___ and ___
Fill in the blank(s) with the appropriate word(s).
Type 2 diabetes is caused by:
a. too much insulin in the blood. b. too little insulin in the blood. c. too much glucagon in the blood. d. too little glucagon in the blood. e. receptors being insensitive to insulin.
Tomato seeds are often consumed by birds or other organisms and then deposited through feces. However, when tomatoes rot on the vine, organisms may not consume them. How would tomato seeds likely disperse in this situation?
A) When the tomato rots, it drops to the ground and the seeds fall in the soil. B) Summer rains carry the seeds to a new area. C) Windy conditions carry the seeds to a new area. D) The tomato disperses its seeds as spores.