During the ingestion of food or liquid, which one of the following tips to block the opening to the trachea?
A) pharynx
B) bronchi
C) epiglottis
D) bronchioles
E) larynx
C
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The functional unit of the kidney is the
(a) renal pelvis. (b) ureter. (c) cortex. (d) nephron.
What is the complementary DNA strand to 5?-ATTCGGTGA-3??
A. 5?-TAAGCCACT-3?. B. 3?-CGGATTGTC-5?. C. 5?-CGGATTGTC-3?. D. 3?-TAAGCCACT-5?. E. 3?-ATTCGGTGA-5?.
Cytoplasmic division in oogenesis is unusual in that ________
a. the cytoplasm is not equally distributed to each daughter cell b. a cell called a polar body, which lacks any DNA, is produced c. the secondary oocyte is diploid d. mitochondria are selectively degraded by lysosomes before cell division is complete
Which organelle is assembled in the nucleolus of the nucleus?
a. Mitochondrion b. Chloroplast c. Ribosome d. Chromosome