Which organelle is responsible for assembling amino acids into proteins?
A. Ribosomes
B. Golgi complex
C. Cell membrane
D. Lysosomes
Answer: A
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Answer the following statements true (T) or false (F)
1. Neutrophils are the most numerous leukocytes. 2. Basophils contain histamine granules. 3. Eosinophils are useful against parasitic infections. 4. Monocytes become polymorphonucleocytes. 5. Lymphocytes include the B and T cells.
During the development of lymphocytes, some pre-T and pre-B cells survive and develop into cells capable of an immune response; this is referred to as ________ selection. However, some cells are suppressed from responding to self antigens; this is referred to as ________ selection.
A. negative; neutral B. negative; positive C. neutral; positive D. neutral; negative E. positive; negative
Dr. Mitchell performs open heart surgery. The incision he makes through the sternal region of his patient divides the thoracic cavity into equal left and right parts. This incision must be made along a:
A) sagittal plane. B) transverse (horizontal) plane. C) midsagittal (median) plane. D) frontal (coronal) plane.
Which gland produces prolactin?
A) Hypothalamus B) Thyroid gland C) Pituitary gland D) Pineal gland