Gene transcription is induced by
a. A.
b. B.
c. C.
d. D.
e. none of these
C
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One of the waste products that accumulates during cellular functions is carbon dioxide. It is removed via the respiratory system. What is another waste product that accumulates during normal physiological functions in vertebrates?
I) ammonia II) uric acid III) urea A) only I and III B) only II and III C) only I and II D) I, II, and III
Defects in cell signaling can lead to a cancerous cell due to:
A. overproduction of signals that trigger cell division. B. overproduction of a receptor that triggers cell division. C. a defective receptor that stays in the activated state and triggers cell division continuously. D. a defective signal-transduction protein that stays in the activated state and triggers cell division continuously. E. All of these choices are correct.
Answer the following statements true (T) or false (F)
1. All sugars are absorbed via secondary active transport. 2. In omnivores, including humans, the cecum is an important organ for digestion of cellulose. 3. Fat absorbed by the small intestine enters the lymphatic system. 4. Frugivores are a type of herbivore.
The common house mouse species, Mus musculus, has the following taxonomic classification: Mus, Muridae, Rodentia, Mammalia, Chordata, Animalia, Eukarya. Which part of the name is the Family?
A. Muridae B. Chordata C. Animalia D. Rodentia