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SLCC BIOL 1090 - UNIT #3 EXAM QUESTIONS AND ANSWERS
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SLCC BIOL 1090 - UNIT #3 EXAM QUESTIONS AND ANSWERS
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SLCC BIOL 1090 - UNIT #3 EXAMQUESTIONS AND ANSWERS
What requires the most ATP to move the molecule across a plasma membrane? -
Answer-an ion moving against a concentration gradient
All chemical reactions in the human body that include build up or breakdown of
macromolecules are termed ____________. - Answer-metabolic reactions.
The proteins that catalyze chemical reactions in the body are called - Answer-enzymes.
How does ATP provide energy to a cell? - Answer-It loses a phosphate group, releasing
energy in the process.
What is the source of chemical energy used to power a muscle cell in your arm? -
Answer-adenosine triphosphate (ATP)
What is the FIRST step of cellular respiration (specifically aerobic respiration, i.e.
oxygen is present) - Answer-Glycolysis in the cytoplasm
What is the SECOND step of cellular respiration (specifically aerobic respiration, i.e.
oxygen is present) - Answer-Citric Acid (Krebs) cycle in the mitochondria
What is the THIRD step of cellular respiration (specifically aerobic respiration, i.e.
oxygen is present) - Answer-Electron transport chain in the mitochondria
What can happen to the carbon dioxide produced from cellular respiration? - Answer-It's
converted to glucose by plants.
The waste product of fermentation is ____ in animals. It causes muscles to "burn" if
they are not receiving sufficient oxygen to perform aerobic respiration. - Answer-lactic
acid
In which organelle is the majority of ATP molecules synthesized? - Answer-
mitochondria
Which one of the following is TRUE regarding the flow of energy through an
ecosystem?
-Energy is cycled through an ecosystem and rarely lost as heat.
-Energy flows from the sun to consumers and then to producers.
-As energy flows through an ecosystem, it does not change form.
-Energy flows from the sun to producers and then to consumers. - Answer-Energy flows
from the sun to producers and then to consumers.
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