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

Biology & Microbiology

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The functional unit of the kidney is the

(a) renal pelvis. (b) ureter. (c) cortex. (d) nephron.

Biology & Microbiology

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?.

Biology & Microbiology

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

Biology & Microbiology

Which organelle is assembled in the nucleolus of the nucleus?

a. Mitochondrion b. Chloroplast c. Ribosome d. Chromosome

Biology & Microbiology