- Which of the following storage types is an example of volatile storage? (11)
- Your body extracts energy from the food you ingest by catalyzing reactions that essentially "burn" the food molecules in a stepwise fashion. What is another way to describe this process?
- most animal fats form a solid at room temperature, while plant fats remain liquid at room temperature. Which of the following is a feature of lipids in plant membranes that best explains this difference?
- Steps 7 and 10 of glycolysis result in substrate-level phosphorylation. Which of the following best describes this process?(a) ATP is being hydrolyzed to phosphorylate the substrate.(b) The energy derived from substrate oxidation is coupled to the conversion of ADP to ATP.(c) Two successive phosphates are transferred, first to AMP, then to ADP, finally forming ATP.(d) The substrate is hydrolyzed using ATP as an energy source.
- A bacterium suddenly expelled from a warm human intestine into the cold world outside. Which of the following adjustments might the bacterium make to maintain the same level of fluidity.
- which of the following cells rely exclusively on glycolysis to supply them with ATP?
- Glycolysis is an anaerobic process used to catabolize glucose. What does it mean for this process to be anaerobic?
- as the number of double bonds present in the fatty acid side chains of phospholipids increases, what happens to the fluidity of the membrane?
- which of the following steps or processes in aerobic respiration include the production of carbon dioxide
- Why does the graph of the rate of diffusion of glucose concentration across a membrane flatten out (plateau) eventually?
- You measure the concentration of a polar molecule inside and outside of a cell. You find that the concentration of the molecule is higher in the cell and is gradually increasing. You also measure the ATP concentration inside the cell and find that it is dropping. What is occurring? a: facilitated diffusion b: endocytosisc: simple diffusiond: passive transport e: active transport
- Oxidation is the process by which oxygen atoms are added to a target molecule. Generally, the atom that is oxidized will experience which of the following with respect to the electrons in its outer shell?
- The reduction of a molecule can sometimes result in the acquisition of a proton, a reaction referred to as
- Foods are broken down into simple molecular subunits for distribution and use throughout the body. Which type of simple subunits, listed below, is used preferentially as an energy source?(a) simple sugars(b) proteins(c) free fatty acids(d) glycerol
- What purpose does the phosphorylation of glucose to glucose-6-phosphate by the enzyme hexokinase serve as the fist step in glycolysis?
- A fatty acid with one or more double bonds between carbon atoms is a: unsaturated b: saturated
- Which of the following stages in the breakdown of the piece of toast you had for breakfast generates the most ATP
- The energy used by the cell to generate specific biological molecules and highly ordered structures is stored in the form of
- The insulin receptor is an integral membrane protein that crosses the plasma membrane. Part of the receptor protein extends outside of the cell and another portion extends into the cytoplasm of the cell interior. Which of the choices is true about the amino acids of the insulin receptor that are present in the part of the transmembrane portion of the protein (the part that resides in the phospholipid bilyaer)?
- the beaker contains two solution solutions of salt (A: .2M salt) (B: .9M salt). They are separated by a membrane that is permeable to both salt and water. There will be what movement of salt and water?