What stimulates muscle contractions during labor?
a. HCG
b. estrogen
c. signals from vagina
d. oxytocin
e. gonadotropins
d
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While running, ____
a. only diastolic blood pressure increases b. only systolic blood pressure increases c. both diastolic and systolic blood pressures increase d. both diastolic and systolic blood pressures decrease e. there would be no change in either diastolic or systolic blood pressure
What characterizes terrestrial tetrapods?
A. Lives on land, has four limbs B. Lives in the water, has four limbs C. Lives on land, has four cranial nerves D. Lives on land, has four sets of chromosomes
In sweet peas, genes C and P are necessary for colored flowers. In the absence of either (__ pp or cc
__) or both (cc pp), the flowers are white. Give the probable genotype of a plant with colored flowers and a plant with white flowers that produced 38 plants with colored flowers and 42 plants with white flowers. What will be an ideal response?
Which of the following does not pertain to helminths?
A. parasitic worms B. eggs and sperm for reproduction C. in kingdom Protista D. have various organ systems E. often alternate hosts in complex life cycles