A light-sensitive pigment that helps set plant circadian rhythms based on length of night is known as __________.
A. phytochrome
B. chlorophyll
C. thigmotropism
D. ribosomes
E. statoliths
Answer: A
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Candle jars are usually used to
A. store candles. B. provide an atmosphere with CO2. C. stimulate the growth of obligate anaerobes. D. prevent the growth of obligate aerobes. E. provide an atmosphere with CO2 AND stimulate the growth of obligate anaerobes.
An oral contraceptive pill contains ____
a. estrogen only b. progesterone only c. FSH d. LH e. estrogen and progesterone
Glycolysis converts glucose into two ________ molecules.
Fill in the blank(s) with the appropriate word(s).
A biology student has captured, measured, and released many ground squirrels from an upland, rocky, wooded area, and many similar ground squirrels from a shrub area in soft soil near a stream. She is measuring skull dimensions, leg and claw lengths and shapes, and other traits of the ground squirrels from each collection area hoping to determine if the two populations are different species. She is involved in
What will be an ideal response?