The energy difference between the reactant glucose and oxygen molecules and the product water and carbon dioxide is 686 kilocalories, yet the 36 ATP molecules produced are only storing 263 kilocalories in their outermost phosphate bond. The rest of the energy went
What will be an ideal response?
to provide heat that is soon lost from the organism.
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In mitochondria,
A) energy from nutrients is converted into a form that a cell can use. B) all of a cell's DNA is replicated. C) fats and carbohydrates are degraded. D) sugars are added to proteins.
Cartilage is found
a. in the nose. b. in the embryonic skeleton. c. in the external ear. d. between vertebrae. e. in all of these
hCG stimulates which structure to secrete estrogen and progesterone?
a. the zona pellucida b. the corona radiata c. the corpus luteum d. the ovum e. the placenta
Consider a protein that is targeted to be an integral membrane protein on the surface of a cell. It has a specific functional domain (domain X) facing the external environment of the cell. How will this protein be oriented in the E.R.?
A) It will be embedded in the E.R. membrane with domain X facing the cytoplasm of the cell. B) It will be embedded in the E.R. membrane with domain X facing the lumen of the E.R. C) It will be completely within the E.R. lumen, not embedded in the membrane. D) It will be outside the E.R. as a peripheral membrane protein.