The four organic molecules found in all living systems are carbohydrates, nucleic acids, lipids, and ________
Fill in the blank(s) with correct word
proteins
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The two MAJOR divisions of the nervous system are the
a. autonomic and peripheral systems. b. sympathetic and parasympathetic systems. c. cranial and spinal nerves. d. central and peripheral nervous systems. e. brain and spinal cord.
Agricultural workers and field archaeologists are exposed to this organism which, despite entering via the respiratory tract, can cause meningitis.
A. Neisseria meningitidis B. Cryptococcus neoformans C. Coccidioides immitis D. Haemophilus influenzae E. Streptococcus pneumoniae
If a newly developed drug is found to bind to serotonin receptors and activate them, the drug is classified as:
A) an antagonist B) a ligand C) a prototype D) an agonist
How many RNAs can be transcribed from a single DNA template?
a. Two RNAs per DNA template can be transcribed, because DNA is double-stranded. b. Four RNAs, two per DNA strand, can be transcribed. c. It depends on the length of the DNA template strand. d. Only one RNA per DNA template can be transcribed. e. Hundreds of RNAs can be transcribed from a single DNA template.