Preemptive competition occurs primarily among mobile organisms, such as small mammals
Indicate whether the statement is true or false
FALSE
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What is the most complex structure DNA can form?
A. individual nucleotides B. a folded and bended double helix C. a single strand of DNA D. a DNA double helix
Place the following events of fertilization in the correct chronological order.
(1) Sperm contacts the cumulus mass. (2) Proteolytic enzymes are released from the acrosome. (3) Sperm contacts the plasma membrane of the ovum. (4) Sperm passes through the zona pellucida. (5) Sperm increase ATP production. A. 5,1,2,4,3 B. 1,5,4,3,2 C. 1,2,4,3,5 D. 5,2,4,3,1 E. 3,5,2,1,4
The light-harvesting units in the thylakoid membranes are the ________.
A. electrons B. ATP molecules C. photosystems D. ATP synthases E. grana
Which of the following statements about exergonic
reactions is false? a. They release energy. b. Glucose metabolism is an example. c. Their products have more energy than the reactants. d. Some energy is converted to less biologically useful forms. e. Bonds are broken.