A sequence database such as GenBank could be used to do all of the following EXCEPT
A) Compare cow and human insulin protein sequences.
B) Construct a tree to determine the evolutionary relationships between various bird species.
C) Search for genes in a fruit fly that are similar to a human gene.
D) Compare patterns of gene expression in cancerous and non-cancerous cells.
D
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Clostridium botulinum produces a deadly toxin that stops muscle contractions by
a. destroying cell membranes. b. killing mitochondria. c. disrupting the structure of actin filaments. d. preventing ATP synthesis. e. blocking acetylcholine release.
Sensory nerves communicate the strength of a stimulus by
a. the magnitude of the voltage change across the membrane during the action potential. b. the speed at which the action potentials are transmitted down the axon. c. the number of action potentials transmitted down the axon. d. a and b. e. a and c.
Jamal and his friends order some chicken at a new restaurant, but they immediately notice that it tastes bitter
Jamal knows that everyone is really hungry, but he tells them not to eat another bite because the bitterness could potentially mean that ________. A) the meal contains too much protein B) the food may be poisoned or spoiled C) there is probably too much vitamin C D) unripe fruit was used in the breading around the chicken
Over 97% of Earth's total water may be found in the ________
Fill in the blank(s) with correct word