Bacteria in the intestinal tract assist their hosts by ____
a. helping with digestion
b. eating other bacteria
c. producing minerals reptiles cannot
d. producing stomach acid
e. encouraging the growth of pathogens
ANSWER: a
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Which of the following is true of astrocytes? Select all correct choices
A. They are a specific type of glial cell. B. They surround blood vessels in the brain. C. They contribute to the blood-brain barrier.
Adherens junctions are linked to cytoplasmic
a. actin filaments. b. intermediate filaments. c. microtubules. d. myosin filaments.
________ genes code for transcription factors that regulate the transcription of other genes
Fill in the blank(s) with correct word
In double-stranded polynucleotides, paired nitrogenous bases are said to be __________
a. homologous b. analogous c. complementary d. parallel e. antiparallel