Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
BioPT
Biology I Chapter 9 Pretest
| Question | Answer |
|---|---|
| All organisms need _______ to carry out all life processes | energy |
| ________ is the process by which plants use sunlight to make organic compounds from carbon dioxide and water. | photosynthesis |
| Autotrophs make _________ compounds that serve as food for them and for almost all of the other organisms on Earth | organic |
| ______ is a process that takes place in autotrophs | photosynthesis |
| _______ involves using energy to build organic molecules and breaking down organic molecules in which energy is stored | metabolism |
| Photosynthesis coverts stable carbon dioxide molecules into _________, a less stable carbon compound | glucose |
| Through the process of cellular respiration, cells make carbon in glucose into stable carbon dioxide and produce _________ | energy |
| _____ is the portable form of energy "currency" inside cells | ATP |
| In cells, chemical energy is gradually released in a series of chemical ______ that are assisted by enzymes | reactions |
| The major light-absorbing pigment in plant photosynthesis is ______ | chlorophyll |
| Plant cells use light energy to make ATP and _________ | NADPH |
| Plants get electrons to replace the excited electrons that leave chlorophyll molecules by splitting _________ | water |
| The final stage of photosynthesis during which sugar molecules are produced is light ____________ | independent |
| The reactions that "fix" carbon dioxide are sometimes called _________ | dark reactions |
| Most of the three-carbon sugars formed during the _______cycle are used to regenerate the five-carbon compound that began the cycle | Calvin |
| ______ concentration is one of the environmental factors that affect photosynthesis | Carbon dioxide |
| Increasing light intensity increases the rate of photosynthesis only until all the ________ in chloroplasts are being used | pigments |
| Glycolysis breaks down glucose into two _________ | pyruvates |
| Glycolysis occurs during the ______ stage of cellular respiration | first |
| Glycolysis is an ________ process | anaerobic |
| During aerobic respiration, the breakdown of a molecule of glucose yields a net of up to ____ molecules of ATP | 36 |
| The first stage of aerobic respiration is a series of biochemical reactions called the ______cycle | Krebs |
| Fermentation takes place in absence of ______ | oxygen |
| Lactic acid fermentation is a _____ process | anaerobic |
| Which of the following is the best explanation for the presence of both chloroplasts and mitochondria in plant cells? | Sugars are produced in chloroplasts. These sugars can be stored and used by the mitochondria to produce ATP |
| How many carbon dioxide molecules are produced during the cellular respiration of two glucose molecules? | twelve |
| At a hydrogen ion pump of the thylakoid membrane, | energy from electrons is used to make ATP |
| ATP is composed of a nitrogenous base, a sugar, and | three phosphate groups |
| The series of molecules that cause protons to build up on one side of a membrane is a(n) | electron transport chain |
| eye pigments: sight :: | chlorophyll : photosynthesis |
| Carbon dioxide is converted into organic compounds in the | Calvin Cycle |
| When a phosphate group is removed from an ATP molecule | a substantial amount of energy is released |
| ATP is called a cell's energy "currency" because | ATP can be "made" in one place and "spent" or used in another |
| In aerobic respiration, a two-carbon molecule combines with a four-carbon molecule as part of | the Krebs cycle |
| While one type of electron transport chain of photosynthesis is used to form molecules of ATP, a second electron transport chain is used | to form molecules of NADPH |
| Water in an end product in | the electron transport chain in aerobic respiration |
| The carbon cycle makes carbon compounds continuously available in an ecosystem and delivers | chemical energy to organisms within the ecosystem |
| Organisms that are NOT autotrophs | must consume other organisms to get energy |
| The major atmospheric by-product of photosynthesis is | oxygen |
| photosynthesis : oxygen :: | cellular respiration : carbon dioxide |
| Cellular respiration takes place in two stages: | glycolysis, then aerobic respiration |
| When electrons of a chlorophyll molecule are raised to a higher energy level, they | are transferred to an electron carrier |
| The space inside the inner membrane of a chloroplast is called the | stroma |
| light energy : excite electrons :: | ATP and NADPH : carbon dioxide fixation |
| Which of the following processes produces the most ATP? | aerobic respiration |
| An enzyme that catalyzes the synthesis of ATP is | ATP synthase |
| The source of oxygen produced during photosynthesis is | water |
| chloroplasts : photosynthesis :: | mitochondria : cellular respiration |
| Which of the following organisms do NOT carry out photosynthesis | animals |
| When cells break down food molecules, energy is | stored temporarily in ATP molecules |
| Hydrogen ion pumps found in the thylakoid membranes are directly responsible for | providing the energy to produce ATP molecules |
| Which of the following is NOT part of cellular respiration | Calvin cycle |
| Products of the light reactions of photosynthesis that are required by the dark reaction are | ATP and NADPH |
| Which of the following statements about glucose is correct? | Glucose is a less stable carbon compound that carbon dioxide is. |
| When glycolysis occurs, | a molecule of glucose is split |
| Which of the following is not formed during the Krebs Cycle? | NADPH |
| The total amount of ATP that a cell gains for each glucose molecule depends on the presence of | oxygen |
| The process of cellular respiration | breaks down food molecules to release stored energy |
| NADPH is important in photosynthesis because it | provides high-energy electrons needed to store energy in organic molecules |
| In the second stage of aerobic respiration, what happens to the electrons that have been depleted of their energy during ATP production? | They combine with oxygen and hydrogen ions to form water |
| Which of the following is NOT true about the dark reactions of photosynthesis? | use water as an electron source |
| The energy used in the Calvin Cycle for the production of sugar molecules comes from | ATP and NADPH |
| Which of the following enables plants to convert light energy to chemical energy? | hydrogen ion pumps |
| Chlorophyll is green because | it reflects green wavelengths of light |
| Because of photosynthesis, | the atmosphere is rich in oxygen gas |
| What is the net gain of ATP molecules in glycolysis? | 2 |
| The final electron acceptor in aerobic respiratoin | oxygen |
| The thylakoid membrane is folded in a way that produces flat, disc-like sacs called ________ | thylakoids |
Created by:
Katielucas
Popular Biology sets