A byproduct of digestion in the stomach of some mammals is ____, and it may be produced in large quantities in
____.
a. methane; carnivores
b. methane; ruminants
c. mucus; carnivores
d. mucus; ruminants
e. mucus; both carnivores and ruminants
ANSWER: b
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Evaluate the following statements; which statement is accurate?
A. Scientists use the word theory to mean a hypothesis that has not been tested many times; this is the same way non-scientists use the word theory. B. Scientists use the word theory to mean a hypothesis that has been supported by many experiments; this is the same way non-scientists use the word theory. C. Scientists use the word theory in the same way that they use the word hypothesis; both mean a general idea that remains to be well tested. D. Scientists use the word theory to mean a hypothesis that has been supported by many experiments; non-scientists use the word theory to mean a hypothesis that remains to be well tested.
Which organ and hormone pair is incorrectly matched?
a. pancreas and insulin b. thyroid gland and thyroxine c. hypothalamus and melatonin d. adrenal cortex and glucocorticoids e. posterior pituitary and oxytocin
What sequences or structures within the DNA can be used to identify sites of transposition?
A) target site duplication and direct repeats B) target site duplication and short tandem repeats C) inverted loops D) target site inversion and direct repeats E) chromosome translocation and insertion of transposase gene
The stamens of a flowering plant are broken down into two separate parts. The long, stalk-like structure is the _________ and the pollen-producing bodies on the tips are the __________.
a. stem; ovaries b. filament; carpels c. receptacle; sepals d. filament; anthers e. stem; anthers