Animals release energy from food by warming the food
a. true
b. false
Answer: b. false
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A woman's husband is a Type I diabetic. He gives her a pen and tells her to inject him with its contents if he ever passes out due to low blood sugar. What hormone does this pen likely contain?
A. Insulin B. Oxytocin C. Glucagon D. Glycogen
Look at the cross section of a cell membrane of a eukaryotic cell. H+ ions are being pumped from a low concentration to a high concentration. Which of the following best describes the type of transport across the cell membrane?
A. active transport B. passive transport C. facilitated diffusion D. co-transport
Label the diagram using the following terms: bark; heartwood; sapwood; secondary phloem; vascular cambium.
What will be an ideal response?
What is the difference in the bonding between alpha-helix and beta sheets?
A. Sulfur bridges allow the spring like turns in alpha helices and van der Waals dispersion allows the folds in beta sheets. B. Hydrogen bonding between the amides only occurs in one of these two types of secondary structures. C. Hydrogen bonding always occurs in the alpha helices but only occurs in parallel beta sheets. D. Hydrogen bonding occurs between the amides of adjacent chains in the sheets instead of between the amides in different parts of the helices.