Many snake venoms contain an acetylcholinesterase inhibitor. Predict what effect the presence of this toxin would have on muscles
A. There would be no effect. Acetylcholine is
the ligand.
B. Muscles would be prevented from
contracting.
C. Muscles would lose their ability to contract
due to the loss of membrane potential.
D. Muscles would contract uncontrollably.
D
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Explain the difference between homosporous and heterosporous plants
What will be an ideal response?
Organic molecules found in plant foods that reduce the risk of certain disorders are known as ____
a. vitamins b. essential amino acids c. minerals d. phytochemicals e. lipids
Which of the following is not true of
mitochondria? a. They have DNA. b. Their DNA can experience mutations. c. In animals the mitochondria come from the mother. d. They undergo genetic recombination during fertilization. e. All these are true
Primary plant cell walls are cross-linked by
a. hemicellulose. b. lignin. c. pectin. d. chitin.