What does the middle ear consist of?
A. three ossicle bones
B. the ear canal
C. the ear drum
D. the vestibular canal
E. the tympanic canal
A. three ossicle bones
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Where are the largest reserves of carbon on the planet?
A. soils B. frozen lakes C. rocks and fossil fuels D. fossil fuels E. the oceans
Low body temperature triggers (A)______, followed by (B)_________. These hormone secretions activate cellular metabolism.
a. (A) reduction of TSH (B) reduction of thyroxin b. (A) reduction of glucocorticoid (B) up-regulation of thyroxin c. (A) up-regulation of glucocorticoid (B) reduction of thyroxin d. (A) up-regulation of TSH (B) up-regulation of thyroxin
The molecule most directly involved in energy transfer within called cells is _______.
A. ATP B. glucose C. CO2 D. O2
You create cells with a version of Cdc6 that cannot be phosphorylated and thus cannot be degraded. Which of the following statements describes the likely consequence of this change in Cdc6?
(a) Cells will enter S phase prematurely. (b) Cells will be unable to complete DNA synthesis. (c) The origin recognition complex (ORC) will be unable to bind to DNA. (d) Cdc6 will be produced inappropriately during M phase.