The building blocks or monomers of nucleic acid molecules are called _____.
A. nucleotides
B. polysaccharides
C. amino acids
D. DNA and RNA
Answer: A. nucleotides
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Which of the following is not usually involved with the spread of staphylococci?
A. Inanimate objects B. Sexual intercourse C. Hands D. Respiratory secretions
The ______ is photosynthetic and leaflike in many flowers
a. carpel b. stamen c. petal d. sepal e. stigma
Spatial summation occurs when
a. several neurons in an area fire at one time. b. neurons fire repeatedly until a stimulus is sent. c. they are too weak to cause an action potential. d. the post-synaptic neuron is stimulated in one location. e. the pre-synaptic neuron fires into many post-synaptic neurons.
Usually, a(n) _____ inhibitor forms a covalent bond with an amino acid side group within the active site, which prevents the substrate from entering the active site or prevents catalytic activity.
Fill in the blank(s) with the appropriate word(s).