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A set of questions and answers related to bio101, a biology course offered by straighterline. It covers various topics including chemical bonds, cellular respiration, photosynthesis, and the structure and function of cells. Useful for students preparing for a test or exam in bio101.
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when two glucose molecules combine they form a disaccharide molecule and ✔✔a water molecule
which of the following statements is NOT true of chemical bonds? ✔✔salts are covalently bonded
Which nutrient source is the easiest one for humans to break down and form ATP? ✔✔glucose
the water strider is an insect that skates across the water without sinking. The tips of its feet must be coated in molecules that are ✔✔hydrophobic
DNA codes for the sequence of amino acids in the primary structure of protein, but not for sugars or lipids. This is because ✔✔proteins are the main structural and functional components of cells.
the backbone of a nucleic acid strand is composed of ✔✔alternating pentose sugars and phosphate groups
which of the following reactions is most likely to occur is an individual was to ingest a large dose of lemon juice ✔✔There would be an increase in the amount of carbonic acid with in the bloodstream. If the carbonic acid didn't form, then the pH of the individual blood could shift toward 7.2.
In the search to discover the agents that cause mad cow disease, scrapie in sheep, and CJD and kuru in humans, diseased brain tissues were passed through a fine filter to remove bacteria. The filtrate was still infectious, indicating that something smaller than bacteria, either viruses or organic molecules, must be the causative agent. If a virus was responsible for these brain diseases, then the infectious agent would contain either RNA or DNA. Other possibilities were that the agent was a carbohydrate, fat, or protein. Tissue filtrates were treated with agents that destroyed just one of these chemicals and then injected into a healthy animal, with the results as follows. What is the infectious agent? ✔✔protein
a piece of meat and a piece of fruit are fed to both a lizard and a person. the extent to which these foods are digested by digestive enzymes along these two gastrointestinal tracts varies. which of the following is not a reason for the variation in digestion? ✔✔the amount of protein in the meat and fruit.
which of the following is a substrate of cellular respiration ✔✔glucose
which of the following statements about glycolysis is the ✔✔glycolysis breaks glucose down to two pyruvate molecules.
which of the following is not a consequence of the lactate that results from fermentation in the muscles ✔✔it is stored in muscle cells for later atp production
what will cycle the energized electrons from the reaction center of the PS1 back to the reaction center in PS1 ✔✔cyclic electron pathway
which of the following statements comparing the ATP synthase complex in cellular respiration and photosynthesis is not the ✔✔both require the movement of H(+) from inside a compartment to outside of the compartment
what are the two sets of reactions for photosynthesis? ✔✔light reactions, Calvin cycle reactions
why does the chloroplast utilize a cyclic electron pathway as well as the noncyclic electron pathway? ✔✔the calvin cycle ultilizes more ATP than NADPH and the cyclic electron pathway produces ATP
which of the following is a substrate in the photosynthesis equation? ✔✔CO
which cofactor is involved in the Calvin cycle reactions? ✔✔NADP+