Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 4CT
The cells of your body never use
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Some cells in your body can
produce hydrogen peroxide to help
fight infections. Hydrogen peroxide
(H2O2) is one of many chemicals
that can help cells at low levels and
harm them at high levels. So the
level of hydrogen peroxide in a cell
must be controlled.
Hydrogen peroxide can break down
into water (H2O) and oxygen gas
(O2). An enzyme called catalase
helps speed up this reaction. In this
lab, you will observe this enzyme-
catalyzed reaction. Then you will
design an experiment to determine
the effect of temperature on the
reaction.
Prelab questions:
IDENTIFY THE REACTANT IN THE
CHEMICAL REACTION
IDENTIFY THE SUBSTRATE
IDENTIFY THE ENZYME
IDENTIFY THE PRODUCTS
Catalase
2H,02
2H,0 + 02
Hydrogen
Water
Охудеn
peгoxide
Label the image below with the following
terms: active site, reactant, enzyme.
Glucose is an energy-rich molecule. So why do body cells need ATP?
Can you help me understand ADP and ATP, because I need to make a comic strip with them as the characters?
Chapter 3 Solutions
Human Biology (MindTap Course List)
Ch. 3 - Describe the general functions of the following in...Ch. 3 - Which organelles are in the endomembrane system?Ch. 3 - Distinguish between the following pairs of terms:...Ch. 3 - What do enzymes do in metabolic reactions?Ch. 3 - In aerobic cellular respiration, which reactions...Ch. 3 - For the diagram of the aerobic pathway shown in...Ch. 3 - The plasma membrane __________. a. surrounds the...Ch. 3 - The _________ is responsible for a eukaryotic...Ch. 3 - Cell membranes consist mainly of a _________. a....Ch. 3 - Prob. 4SQ
Ch. 3 - The passive movement of a solute through a...Ch. 3 - Match each organelle with its correct function.Ch. 3 - Which of the following statements is not true?...Ch. 3 - Enzymes _______. a. enhance reaction rates b. are...Ch. 3 - Match each substance with its correct descriptionCh. 3 - Cellular respiration is completed in the ______....Ch. 3 - Prob. 11SQCh. 3 - In a mitochondrion, where are the electron...Ch. 3 - Prob. 1CTCh. 3 - Jogging is considered aerobic exercise because the...Ch. 3 - Section 3.17 mentions that arsenic poisons human...Ch. 3 - The cells of your body never use nucleic acids as...
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- Choose ONE of the following macromolecules: lipids (membrane), DNA (genes) or protein. Then, explain how free radicals destroy and/or alter the macromolecules that you chose.arrow_forwardWhich of the following statements is not correct? a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously. d. Energy can be transferred.arrow_forwardWhat convenient form of chemical energy is used by all cells?arrow_forward
- The energy currency used by cells is _____. a. ATP b. ADP c. AMP d. adenosinearrow_forwardWhich of the following statements is not true? Metabolic pathways _____. a. occur in a stepwise series of chemical reactions b. are speeded up by enzymes c. may break down or assemble molecules d. always produce energy (such as ATP)arrow_forwardATP is the cell's currency for energy, in your own understanding of ATP, how can ATP in excess or lack thereof causes diseases in the body? A page and a half answer will suffice.arrow_forward
- where do long-chain fatty acids get first activated? a. nucleolus b. cytosol c. microsome or d. nucleusarrow_forwardWhy should it make sense that a mitochondrion(a cellular organelle) is larger than a phospholipid molecule?arrow_forwardWhich of the following can be used to generate ATP? sugar amino acids glycerol fatty acidsarrow_forward
- Why do living things require energy? Where does that energy ultimately come from?arrow_forwardCHOOSE THE CORRECT LETTER Where does gluconeogenesis occur in the cell?A. mitochondriaB. cell membraneC. nucleusD. cytosolarrow_forwardWhy must the breakdown of molecules for energy in the body occur in several steps, rather than in one step?arrow_forward
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