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.
E
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The binding of antibodies in the blood plasma to their corresponding surface antigens on the erythrocyte plasma membrane is called ________.
Fill in the blank(s) with the appropriate word(s).
The ____________________ is the principal site for metabolic interconversions of nutrient molecules
Fill in the blank(s) with correct word
Which of the following is not true regarding sickle-cell disease?
A. It is a cause of anemia. B. It is advantageous in that it can protect carriers against malaria. C. It is caused by a recessive allele that modifies the structure of hemoglobin. D. It is a cause of malaria. E. It is due to a hereditary hemoglobin defect.
What makes a cell responsive to a particular hormone?
A) The location of the target cells in the body B) The presence of a receptor for that particular hormone C) The location of the gland that secretes the hormone D) The site where the hormone is secreted E) The chemical properties of the hormone