________ connective tissue is resilient and springy because it contains more elastin than collagen. (Note: Be sure to capitalize the first letter of your answer).
Fill in the blank(s) with the appropriate word(s).
Elastic
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________ is not attributed to testosterone
a. Masculinization of the developing reproductive tract and external genitalia b. Descent of the testes into the scrotum c. Spermatid remodeling d. Development and maintenance of male secondary sexual characteristics e. Libido
Ribosomes are located Bound to the rough endoplasmic reticulum Bound to the membrane of the golgi complex Free in the cytoplasm, unattached to the membrane of any organelle
What will be an ideal response?
Specificity is an important characteristic of intercellular communication; which of these best explains how it occurs?
A. The phospholipid composition of the plasma membrane differs among cells. B. Protein receptors are only located on the surface of target cells. C. All cells have the same DNA, so any cell can express protein receptors for a specific chemical. D. Chemical messengers are all proteins, so bind only to receptors that are proteins. E. Protein receptors for chemical messengers are only expressed in specific target cells.
If one hormone makes a target cell more responsive to another hormone that follows later, the first hormone is said to have a ___ effect.
a. cooperative b. facilitating c. permissive d. synergistic e. catalytic