Secretions from the bulbourethral gland lubricate and cleanse the urethra of urine residue prior to the entry of sperm
Indicate whether the statement is true or false
TRUE
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Signals from the __________ of the brain send
__________ signals per minute when a person is at rest. a. medulla oblongata; 10-14 b. slit level; 35-45 c. frontal lobe; 1-5 d. occipital lobe; 1-9 e. none of these
Define determination and differentiation
What will be an ideal response?
Which of the following is unlikely to trigger degradation of a eukaryotic mRNA in the nucleus?
a. aberrant splicing b. presence of a nonsense codon c. lack of splicing d. misfolding of the mRNA e. lack of a poly(A) tail
Why can bacteria undergo rapid evolutionary change?
a. Bacteria pass through numerous bottlenecks. b. Bacteria mutate at high rates. c. Bacterial populations are large and can reproduce quickly. d. Bacteria experience intense selective pressure.