Wood frogs freeze solid during the winter and then thaw in the spring. As the freezing progresses, blood circulation stops. How would you expect cells not being served by the circulatory system to produce ATP during this time, and what by-product would
you expect to build up in the cells?
A) aerobic respiration and CO2
B) fermentation and lactate
C) fermentation and alcohol
D) photosynthesis and O2
Answer: B
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Which of the following enzymes would you expect to find in the virion of a retrovirus, but NOT in a bacteriophage?
A) lysozyme B) methylase C) restriction enzymes D) reverse transcriptase
Organisms that make their own organic compounds from inorganic substances are called
A. animals. B. animorphs. C. autotrophs. D. heterotrophs.
In "type 1 diabetes,"
a. blood glucose levels are too low. b. the body receptors are insensitive to insulin. c. insulin is no longer produced by the pancreas. d. diet modification will control the disease. e. mostly middle-aged persons are affected.
Most segmentation genes code for:a
transcription factors. b. genetic switches such as operators. c. repressors. d. insulin-like growth factors. e. morphogens.