Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Chapter 4, Problem 2RQ
Explain what is meant by “free energy” in a system. Will a reaction that proceeds spontaneously have a positive or negative change in free energy?
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2. In one of the reactions of the citric acid cycle, malate is oxidized to oxaloacetate. When this
reaction is considered in isolation, a small amount of malate remains and is not oxidized.
The best term to explain this is
a. enthalpy
b. entropy
c. equilibrium
d. free energy
e. loss of energy
18. The citric acid cycle takes place in
a. the chloroplasts
b. the cytosol
c. the inner mitochondrial membrane
d. between the two mitochondrial membranes
e. the mitochondrial matrix
40 WIL
Chapter 4 Solutions
Loose Leaf For Integrated Principles Of Zoology
Ch. 4 - State the first and second laws of thermodynamics....Ch. 4 - Explain what is meant by free energy in a system....Ch. 4 - Many biochemical reactions proceed slowly unless...Ch. 4 - What happens in the formation of an...Ch. 4 - Explain three ways that enzymes may be regulated...Ch. 4 - What is meant by a high-energy bond, and why might...Ch. 4 - Although ATP supplies energy to an endergonic...Ch. 4 - What is an oxidation-reduction reaction and why...Ch. 4 - Give an example of a final electron acceptor found...Ch. 4 - Why must glucose be primed with a high energy...
Ch. 4 - What happens to the electrons removed during the...Ch. 4 - Why is acetyl-CoA considered a strategic...Ch. 4 - Why are oxygen molecules important in oxidative...Ch. 4 - Explain how animals can generate ATP without...Ch. 4 - Why are animal fats sometimes called the king of...Ch. 4 - The breakdown of amino acids yields two products:...Ch. 4 - Explain the relationship between the amount of...Ch. 4 - Prob. 1FFT
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- 8. Most reactions of anaerobic respiration are similar to a. aerobic respiration b. photosynthesis c. lactic acid fermentation d. alcoholic fermentation e. both c and darrow_forward12. Which of the following molecules can absorb light? a. Pigments b. Chlorophyll c. Rhodopsin d. Carotenoids e. All of the abovearrow_forwardWhich of the following proteins or protein complexes is directly required for the targeting of mitochondrial inner membrane multipass proteins, such as metabolite transporters, whose signal sequence is normally not cleaved after import? OA. TIM22 OB. TIM23 C. OXA OD. Mia40 OE SAMarrow_forward
- QUESTION 9 An animal cell has been wounded and has a small rupture in its plasma membrane. Which of the following is more likely to happen next? OA. The cell rapidly cleaves by cytokinesis. OB. The rate of receptor-mediati endocytosis is increased. OC. The rate of exocytosis is increased. OD. The rate of pinocytosis is increased.arrow_forwardFor the a subunit of a trimeric G protein, A. a G-protein-coupled receptor GPCR) acts as a guanine nucleotide exchange factor (GEF), whereas a regulator of G protein signaling (RGS) can act as a GTPase-activating protein (GAP). B. a GPCR acts as a GAP, whereas an RGS can act as a GEF. C. both a GPCR and an RGS can act as a GEF. O D. both a GPCR and an RGS can act as a GAP OE. None of the above.arrow_forwardA cell expresses a transmembrane protein that is cleaved at the plasma membrane to release an extracellular fragment. The fragment binds to receptor proteins on nearby cells and activates signaling pathways resulting in altered gene expression patterns in the cells. What form of intercellular signaling does this represent? OA. Contact-dependent signaling B. Paracrine signaling OC. Synaptic signaling D. Endocrine signaling E. Autocrine signalingarrow_forward
- Which of the following drive nuclearly encoded proteins import into the mitochondrial matrix? OA. ATP hydrolysis OB. Membrane Potential OC. K+ Ions OD. A and B OE. None of the abovearrow_forwardWhich of the following statements is true regarding Cholesterol import into the cell? OA. It is transported within LDL B. Receptor mediated endocytosis is involved OC. Release of cholesterol occurs in the Lysosome D. All of the above are true statements OE. None of the above are true statementsarrow_forwardIn which of the following schematic drawings of signaling pathways does the activation of the receptor lead to gene expression? Activating and inhibitory steps are indicated with (+) and (-), respectively. OA OB ㅇㅂㅇㅂㅇㅁ (+) Gene Expression Activated Signaling proteins Transcription receptor activator Bl D Gene Expression Gene Expression ㅁㅁㅇ Gene Expression Gene Expressionarrow_forward
- Which of the following events normally activates a GTP-binding protein? OA. GTP hydrolysis by the protein OB. Activation of an upstream GTPase-activating protein OC. Activation of an upstream guanine nucleotide exchange factor OD. Phosphorylation of a bound GDP molecule by an upstream phosphorylase OE. Pi release after GTP hydrolysisarrow_forwardProteins that are synthesized on the Rough ER are imported into the ER lumen after their signal sequence is recognized. Which of the following is responsible for the signal recognition? OA. Signal Recognition Particle, OB. Signal Sequence C. Stop-transfer sequence OD. Both B and C OE. None of the abovearrow_forwardStroma Light 4 H 4 H I Thylakoid- membran 2 H₂O D1 D2 Min Light 2,6 ATP 2 NADP+ 2 NADPH/H+ Fp 2,6 ADP +2,6 P 8 H+ 12 H+ 4 H+ Lumen PS II Cyt bef PS I ATP-Synthase 12345 5a 5b 6arrow_forward
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