The thermic effect of food is best described by which of the following?
a. the amount of heat given off at each meal
b. the energy needed to digest, absorb, and use nutrients
c. the optimal temperature at which food should be consumed
d. how food influences body temperature
Answer: b. the energy needed to digest, absorb, and use nutrients
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When does a zygote become a multicellular creature?
a. at fertilization b. when cleavage begins c. when organs begin to form d. when the heart begins beating e. at birth
RNA interference is a process by which noncoding RNA molecules regulate gene expression. Indicate whether the statement is true or false
How could you determine if a plant is heterosporous?
A) Male and female reproductive structures are located on separate plants. B) It has vascular tissue. C) It has multiple sporangia. D) Its diploid sporophyte produces spores via meiosis.
kinetochore
What will be an ideal response?