Which of the following are examples of potential energy associated with our food consumption and metabolism?
When a cell "burns" food, electrons are released from chemical bonds in the food, and passed through an electron transport chain generating a proton gradient. As the protons pass through an ATPase the energy is used to generate ATP.
A. electrons moving through the electron transport chain, and protons moving through ATPase
B. electrons in chemical bonds of food molecules, proton gradients, and ATP molecules
C. electrons from food molecules moving through the electron transport chain, and a proton gradient
D. protons moving through ATPase by facilitated diffusion, ATP molecules
E. All of the answer choices are correct.
B. electrons in chemical bonds of food molecules, proton gradients, and ATP molecules
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Match the following descriptions (A-C) with the terms in the table. These descriptions may be used more than once or not at all
a. an extracellular matrix component b. a cell adhesion molecule c. part of the cytoskeleton 1. lignin 2. collagen 3. integrin 4. actin 5. microtubule 6. cellulose 7. middle lamella 8. cadherin 9. tubulin 10. keratin 11. pectin 12. intermediate filament 13. microfilament What will be an ideal response?
Some of the CO2 that is exhaled during breathing is created during
A) the reduction of oxygen in the ETC. B) chemiosmosis. C) glycolysis. D) fermentation. E) the conversion of pyruvate to acetyl CoA.
RNA molecules with 5' cap and poly A tail are most likely
A. Prokaryotic tRNA B. Eukaryotic mRNA C. Prokaryotic rRNA D. Prokaryotic mRNA E. Eukaryotic tRNA
You examine the fossilized remains of the winged animal. Impressions in the surrounding rock suggest that the wings may have been covered with tiny hairs, which suggests that the animal is likely to have been a mammal. When you examine the remains of the
wings, which of the following observations would be most surprising? A) Several of the digits ("finger" bones) are extremely long, and look as if they supported a thin membrane. B) The animal appears to have five digits in each forelimb. C) The animal appears to have two upper arm bones. D) The animal's wings appear to be much larger than those of any known bat.