The cyclin component of MPF is destroyed toward the end of which phase?
A) G1
B) S
C) G2
D) M
D
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Ribosomes that do not anchor on the surface of the rough endoplasmic reticulum during translation most probably
A) are synthesizing cytoplasmic proteins. B) have a defect in ribosomal proteins that allow attachment to the surface. C) have a signal peptidase error. D) do not make the appropriate anchor protein. E) All of the above are probable reasons.
Which hemoglobin genotype has the highest fitness in an area of high malaria infection?
a. HbAA b. HbAS c. HbSS d. All are equal
Most of the neurons in the human brain are _____
A) sensory neurons B) motor neurons C) interneurons D) peripheral neurons
Which structural feature of Gram-positive bacteria enhances their ability to retain the crystal violet dye?
a. an outer membrane b. a thin peptidoglycan layer c. a thick peptidoglycan layer d. All of the above contribute to a Gram-positive cell's ability to retain crystal violet.