BIO 2060 Chapter 24 Study Guide
Suppose you suddenly develop a wild craving for bananas and eat a half
dozen. Since bananas are rich in potassium, this will raise your blood
potassium concentration. How does the body get rid of the extra potassium?
BIO 2060 Chapter 21 Study Guide Questions
1. Name one specific physical property that gives skin its protective, immune function.
2. Name one specific chemical property that gives skin its protective, immune function.
Skin has Keratin th
1. What does it mean to say that photosystem II splits water?
A. water is reduced to yield H2 gas
B. a condensation reaction occurs
C. water is broken into monomers
D. water is oxidized to yield H+, electrons, and O2
2. Cellular respiration is controlled
1. Synaptic signaling between adjacent neurons is like hormone signaling in
which of the following ways?
A. it persists over a long period
B. it sends its signal molecules quite a distance
C. it sends its signal molecules through the blood
D. it sends its
1. The final acceptor of electrons in the light reactions of photosynthesis
2. What is the main purpose of the reactions in a fermentation pathway?
A. to synthesize pyruvate from lactate
B. to synthesize electron acceptor
1. Glucagon and estrogen are signal molecules that attach to
_ receptors, respectively.
A. ligand-gated ion channel . G protein-coupled
B. G protein-linked . cytoplasmic
C. cytoplasmic . intracellular
D. tyrosine kinase . intracellular
E. nuclear . intrac
1. Reactants and products are designated by capital letters; enzymes are designated by
numbers. If enzyme 5 is inactive, which of the following products would be produced
from the metabolic pathway?
E. products A and D8
1. A young child is rushed to the emergency room after ingesting methanol (wood
alcohol). Methanol is quickly oxidized by alcohol dehydrogenase and then
undergoes further oxidation reactions to form a toxic metabolite that can
cause blindness and even dea
1. Pyruvate kinase that contributes to transforming pyruvate into acetyl-CoA is
found in the mitochondrial matrix.
2. When substance A was added to an enzyme reaction, the product formation
decreased. The addition of more substrate did no
1. The net yield from two glucose molecules going through glycolysis and
pyruvate oxidation is _ molecules of NADH and _ molecules of
A. 4 and 0
B. 3 and 1
C. 8 and 0
D. 8 and 2
E. 10 and 2
2. The rate of photorespiration in most plants increases a
1. All of the following are key processes in the production of energy in the
A. electron transport chain
B. oxidative phosphorylation
C. the Krebs cycle
2. While conducting an experiment, you realize that a competitive i
1. Which of these is/are NOT true about pyruvate oxidation? Pyruvate oxidation
A. begins with pyruvate and ends with acetyl-CoA
B. produces more NADH than does glycolysis
C. occurs in the presence and absence of O2
D. occurs in the mitochondria
E. B and C
1. In the chemiosmotic mechanism,
A. the flow of H+ through ATP synthase from the thylakoid lumen to the
stoma drives the phosphorylation of ADP
B. the flow of H+ through ATP synthase from the mitochondrial matrix to
the intermembrane space drives the pho
1. Which observation would be the best evidence that active transport was
responsible for moving a particular substance into a cell?
A. a correlation between the amount of the substance taken in and ATP
B. an inverse relationship between the am
1. All of the following are part of a prokaryotic cell EXCEPT
E. B and C
2. A crab in the ocean has the same salt concentration in its body as the
surrounding seawater. Thus, the ocean is hypotonic to the crab.
1. Structure E primarily functions to
A. synthesize proteins
B. store proteins
C. modify and package proteins
D. synthesize lipids
E. create vacuoles
11. An ionic bond forms between the charged ends of two water molecules.
2. _ orbital ha
1. Cytochalasins interrupt microfilament polymerization by binding to the
growing end of microfilaments. These drugs would most likely affect directly
which of the following processes?
A. muscle contraction
B. cell crawling movements
C. organelle movement
1. Blood pH is influenced by respiration; experimental hyperventilation in a
physiology laboratory will result in the student's blood pH being
D raised to pH6
E. A and D
2. Unsaturated fats
A. are usually solid at room t
1. In lactic acid fermentation, pyruvate serves as an
A. electron donor for the reduction of NAD+
B. electron donor for the oxidation of NADH
C. electron acceptor for the oxidation of NADH
D. electron acceptor for the reduction of NAD+
2. Vitamins can be
1. If researcher wishes to determine the amount of -pleated sheet in Protein
X, she would need to examine the protein
A. primary structure
B. secondary structure
C. tertiary structure
D. quaternary structure
E. all of the above
2. The endosymbiotic theory
1. Hydrophobic interactions are exhibited by both polar and nonpolar molecules.
2. The cell takes in dissolved materials by forming vesicles around solutes
trapped by invagination of the plasma membrane. This process is
1. Which of the following is/are the example(s) of denaturatization?
A. water freezing
B. egg white forming a solid when heated
C. table salt dissolves in water
D. butter changing from solid to a liquid
E. B and D
2. Which of the following is in a differe