The coils of nucleosomes found in non-dividing cells are called
A) nucleoplasms.
B) chromatin.
C) histones.
D) ribosomes.
E) nucleoli.
B) chromatin.
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Cilia and flagella extend from certain cells, enabling them to move
Indicate whether the statement is true or false
Which amino acid is usually formed from the transamination of another amino acid?
A. Glutamic acid B. Glycine C. Serine D. Aspartic acid
On coming inside from the cold, students notice that their cheeks are red. This results from
A. increased permeability of superficial vessels. B. damage to the epidermis by the cold. C. dilation of the blood vessels in the dermis of the cheeks. D. constriction of the sweat glands in the cheeks. E. constriction of the blood vessels in the epidermis of the cheeks.
Delicate unpigmented hairs that cover the fetus in early development are called
A. terminal hairs. B. secondary hairs. C. primary hairs. D. vellus hairs. E. lanugo hairs.