CH 8
A) Due to motion
B) Due to location or structure
C) Available to work
D) Lost as heat
B) Due to location or structure
During aerobic cellular respiration, a proton gradient in mitochondria is generated by_____, and used primarily for ________.
A) ETC, ATP Synthesis
B) ETC, Substrate-Level Phosphorylation
C) Fermentation, NAD Reduction
D) Diffusion of protons, ATP Synthesis
A) ETC, ATP Synthesis
Specifically, molecules of chlorophyll are located in membranes of sacs called________
A) Stroma
B) Thylakoid
C) Bundle sheaths
D) Crystae
B) Thylakoid
According to the first law of thermodynamics, _____.
A. the universe loses energy because of heat production
B. systems rich in energy are intrinsically unstable and will give up energy with time
C. energy can be neither created nor destroyed
D. A and B only
E. A, B, and C
C. energy can be neither created nor destroyed
The correct sequence of steps in the M phase of the cell cycle is ___.
A. prometaphase,prophase, metaphase, anaphase, telophase, cytokinesis
B. prophase, metaphase, prometaphase, anaphase, telophase
C. prophase, prometaphase, metaphase, anaphase, telophase, cytokinesis
D. prophase, metaphase, anaphase, prometaphase, telophase, cytokinesis
E. cytokinesis, telophase, prophase, prometaphase, metaphase, anaphase
C. prophase, prometaphase, metaphase, anaphase, telophase, cytokinesis
What is the change in free energy at chemical equilibrium?
A) slightly increasing
B) greatly increasing
C) no net change
D) slightly decreasing
E) greatly decreasing
C) no net change
In glucose catabolism, which pathways are taken when oxygen is not present in high levels?
A) Glycolisis, Fermentation
B) Glycolisis
C) Fermentation
D) Kreb cycle and oxidative phosphorlaytion
A) Glycolisis, Fermentation
The light reaction occurs in the ______, The Calvin cycle occurs in the_________.
A) Thylakoid, Stroma
B) Cytoplasm, Stroma
C) Stroma, Thylakoid
D) Cytoplasm, Thylakoid
A) Thylakoid, Stroma
All of the following occur as a result of the Krebs cycle except:
A. ATP is formed.
B. NADH is formed.
C. FADH2 is formed.
D. CO2 is released.
E. Electrons and protons add to O2 to form water
E. Electrons and protons add to O2 to form water
What is the name for the region on a duplicated chromosome that holds sister chromatids together?
A. centrosome
B. centromere
C. kinetochore
D. centriole
E. cytochrome
B. centromere
The second law of thermodynamic state that the ______, or disorder of the universe, is constantly increasing.
A) Entropy
B) Free Energy
C) Enthalpy
A) Entropy
How many net NADH are obtained in glycolysis?
How many ATP are obtained in glycolysis?
How many total ATP?
How many total CO2?
NADH: 2
ATP:2
Total ATP: 32
CO2: 6
Which of the followings are products of lights reactions of photosynthesis?
A) ADP, Pi, and NADP+
B) ATP, NADPH, O2
C) C2O, Glucose
D) H20 & O2
B) ATP, NADPH, O2
In the equation relating free energy to entropy, ∆G = ∆H - T∆S, the parameter ______represents
free energy which is defined as the amount of energy _________ .
A) G .................... due to motion
B) G .................... due to structure or location
C) S .................... available for work
D) G .................... available for work
E) S .................... due to motion
D) G .................... available for work
For a species with a haploid number of 23 chromosomes, how many different combinations of
maternal and paternal chromosomes are possible for the gametes?
A. 2^23
B. 2^32
C. 2 x 23
D. 2^46
E.46^2
A. 2^23
A) Metabolic Inhibition
B) Reversible Inhibition
C) Feedback Inhibition
D) Forward Inhibition
C) Feedback Inhibition
A) One turn of Kreb Cycle produces 3 NADH and 1 FADH2
B) 1 NADH yield 3 ATP through the electron transport chain & oxidative phosphorylation
C) One turn of the Kreb Cycle produces 1 ATP through substrate level phosphorylation
D) Glycolysis result in 2 NADH molecules from 1 molecule of glucose
E) None are false, all are ture
E) None are false, all are ture
n mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space,
whereas in chloroplasts, chemiosmosis translocates protons from _____
A. the stroma to the photosystem II
B. the matrix to the stroma
C. the stroma to the thylakoid space
D. the intermembrane space to the matrix
E. ATP synthase to NADP+ reductase
C. the stroma to the thylakoid space
The chemiosmotic mechanism of oxidative phosphorylation
A. utilizes a proton-motive force created by a H+ gradient across the inner
mitochondrial membrane
B. generates ATP by the diffusion of H+ ions through ATP synthase
C. generates ATP by the active transport of H+ ions through ATP synthase
D. A and B
E. A and C
D. A and B
f mammalian cells receive a go-ahead signal at the G1 checkpoint, they will ____.
A. move directly into telophase
B. complete the cycle and divide
C. exit the cycle and switch to a nondividing state
D. enter a G0 phase
E. complete cytokinesis and form new cell walls
B. complete the cycle and divide
Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's _____.
A. entropy
B. activation energy
C. endothermic level
D. heat content
E. free-energy content
B. activation energy
It is possible to prepare vesicles from portions of the inner membrane of the mitochondria. Which one
of the following processes could still be carried on by this isolated inner membrane?
A. the citric acid cycle
B. oxidative phosphorylation
C. glycolysis and fermentation
D. reduction of NAD+
E. both the citric acid cycle and oxidative phosphorylation
B. oxidative phosphorylation
Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated
from the stroma. This damage will have the most direct effect on which of the following processes?
A. the splitting of water
B. the absorption of light energy by chlorophyll
C. the flow of electrons from photosystem II to photosystem I
D. the synthesis of ATP
E. the reduction of NADP+
D. the synthesis of ATP
What happens at the conclusion of meiosis I?
A. Homologous chromosomes are separated.
B. The chromosome number is conserved.
C. Sister chromatids are separated.
D. Four daughter cells are formed.
E. All of the above.
A. Homologous chromosomes are separated.
Which of the following occurs in meiosis but not in mitosis?
A. chromosome replication
B. synapsis
C. production of daughter cells
D. alignment of tetrads at metaphase plate
E. both B and D
E. both B and D