BIO 100 Quiz 2 - Questions and Answers Identify the principal role of cellular respiration. a) To convert kinetic energy into the chemical energy of suga... [Show More] rs b) To convert the chemical energy of sugars into the chemical energy that fuels life's processes c) To convert the chemical energy of sugars into heat to maintain an elevated body temperature d) To convert solar energy into the chemical energy of sugars Choose the best explanation as to why both consumers and producers perform cellular respiration. a) Both consumers and producers perform cellular respiration to produce the sugars that will be "burned" to fuel the energy of life. b) Both consumers and producers perform cellular respiration to produce the oxygen necessary to sustain life. c) Although they may obtain their sugars in different ways, both consumers and producers rely on cellular respiration to make ATP. d) Both consumers and producers perform cellular respiration to produce the heat necessary to sustain life. Identify the role of water in photosynthesis. a) It is split to form sugar. b) It is a waste product in the light reactions. c) It is the final electron acceptor. d) It is the initial electron releaser when split. The food you eat is processed during cellular respiration to produce stored chemical energy in the form of __________. __________ and __________ are by products. a) ATP; CO2; water b) ATP; O2; water c) water; ATP; CO2 d) sugar; CO2; water What process involving cell division results in daughter cells that are NOT identical to the parent cell? a) regeneration b) growth and repair c) asexual reproduction d) sexual reproduction Egg and sperm cells have half the number of chromosomes as their parent cells. If it were to be stretched out, the DNA in one of your cells would be taller than you. How does such a large quantity of DNA fit within the nucleus of one of your cells? a) DNA is associated with proteins that compact the DNA to form a package called chromatin. b) Proteins are required to condense DNA during cell division but not during Interphase. c) Pure DNA condenses spontaneously on its own. d) Except during cell division, DNA fills the entire cell. Before cells divide, their DNA compacts even further to form sister chromatids. Which of the following is the correct sequence of events during mitosis? a) Chromosomes line up, nuclear membrane forms, nuclear membrane dissolves, chromosomes split b) Nuclear membrane dissolves, chromosomes line up, chromosomes split, nuclear membrane forms c) Nuclear membrane forms, chromosomes line up, chromosomes split, nuclear membrane dissolves d) Chromosomes split, nuclear membrane dissolves, nuclear membrane forms, chromosomes line up In the secretory pathway, proteins going into the Golgi apparatus come from: a) Lysosome b) Ribosomes c) Plasma membrane d) Endoplasmic reticulum e) Nucleus A duplicated chromosome remains tightly paired with its partner at a region called the _______. Centromere The DNA of every eukaryotic cell is stored in one or more _______ located in the _______ . Chromosomes; Nucleus Before a cell divides, it copies all of its chromosomes. While the two copies of a chromosome are attached they are called _______. sister chromatids DNA and protein together form a complex called _______. Chromatin Chromosomes contain most of the cell's _______ which acts as the molecule of heredity. DNA Can energy be harvested by the cells from glucose without oxygen? a) Partially, oxygen is required to harvest any energy from glucose. b) Yes, but much less than with oxygen. c) Yes, about as much as with oxygen. d) Not at all b) Yes, but much less than with oxygen. Glycolysis, the Citric Acid Cycle, and Electron Transport Water behind a dam has a certain amount of stored energy that can be released as the water falls over the top of the dam. It may be enough energy to turn a mill wheel or an electricity-generating turbine. Choose the term that best describes the type of energy stored in the water at the top of the dam. a) Potential b) Chemical c) Radiant d) Kinetic Which of the following best describes the chemical equation for photosynthesis? a) Water + Carbon dioxide + Energy = Sugar + Oxygen b) Oxygen + Sugar = Water + Carbon dioxide + Energy c) Carbon dioxide + Sugar + Energy = Oxygen + Water d) Oxygen + Water + Carbon dioxide = Sugar + Energy Which of the following is a common energy currency in living cells that powers most living organisms? a) Phosphate b) Sunlight c) ATP d) Heat During which stage of cellular respiration is the majority of the ATP produced? a) Fermentation b) Glycolysis c) Electron transport chain d) Citric acid cycle Which stage of photosynthesis, if any, can function in the dark? a) Stage 1 (the light reactions) b) Stage 2 (the Calvin cycle) c) Both Stage 1 and Stage 2 d) Neither Stage 1 nor Stage 2 What must happen before a cell can begin mitosis? a) The nuclear envelope must break up. b) A mitotic spindle must form. c) The nucleus must divide in two. d) The sister chromatids must be separated. e) The chromosomes must be duplicated. Occurs during interphase The centrosomes move away from each other and the nuclear envelope breaks up during which phase of mitosis? a) Telophase b) Anaphase c) Metaphase d) Prophase e) Interphase The chromosomes line up in the center of the cell during which phase of mitosis? a) Anaphase b) Telophase c) Metaphase d) Prophase e) Interphase Chromosomes lined up in the center of the cell after the nuclear envelope broke up, but before the sister chromatids were separated. [Show Less]
