Exam 2 Review Flashcards
Which statement is representative of the 2nd law of thermodynamics?
A) conversion of energy from one form to another is always accompanied by some gain of free energy
B) heat represents a form of energy that can be used by most organisms to do work
C) without an input of energy, organisms would tend toward decreasing entropy
D) cells require a constant input of energy to maintain their high level of organization
E) every energy transformation by a cell decreases the entropy of the universe
D) cells require a constant input of energy to maintain their high level of organization
Due in a laboratory expiremant you discover that an enzyme-catalyzed reaction has a G of -20 kcal/mol. If you double the amount of enzyme in the reaction what will be the G for the new reaction?
-20 kcal/mol
The electrons in glucose that move through cellular respiration originally came from _________ before being incorporated into the glucose molecule.
a) Oxygen
b) ATP
c) Carbon dioxide
d) Phosphate
e) Water
e) Water
The final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is…
a) oxygen
b) water
c) NAD+
d) Pyruvate
e) ADP
a) oxygen
White muscle, which is good for short, fast sprints, has a prepondance of what kind of metabolic pathway?
a) oxidative
b) glycolytic
b) glycolytic
In any ecosystem, terrestrial or aquatic, what group is/are always necessary for energy assimilation?
a) Autotrophs and heterotrophs
b) Producers and primary consumers
c) Decomposers
d) Autotrophs
e) Primary, secondary and tertiary consumers
d) autotrophs
Grow lights emit in the ____ and _____ part of the electromagnetic spectrum because the energy associated with these wavelengths of light utilized by plants for photosynthesis
a) Green: yellow
b) Infrared: Violet
c) Blue violet: Red
d) Orange: brown
c) Blue violet: Red
Which of the following statements describes the result of this reaction?
a) C6H12O6 is oxidized and O2 reduced
b) O2 is oxidized and C6H12O6 is reduced
c) CO2 is reduced and O2 is oxidized
d) C6H12O6 is reduced and co2 is oxidized
e) O2 is reduced and CO2 is oxidized
a) C6H12O6 is oxidized and O2 reduced
What is the primary function of the Calvin cycle?
a) Use ATP to release CO2
b) Use NADH to release CO2
c) Split water and release CO2
d) Synthesize the simple sugars from CO2
d) Synthesize the simple sugars from CO2
Which of the following are products of 5e light reactions of photosynthesis that are used in the Calvin cycle?
a) CO2
b) ATP & NADH
c) ADO PI & NADH+
b) ATP & NADH
If you were to inject a substance into a persons bloodstream to bind to an intracellular receptor you should choose a…
a) Water soluble hormone
b) Neurotransmitter
c) Water soluble protein
d) No steroid hormone
e) Lipid soluble substance
e) Lipid soluble substance
A component of king cobra venom causes immediate paralysis in animals bitten. What is the nature of the ligand and receptor responsible?
a) Steroid and transcription factor
b) Protein and receptor tyrosine kinase
c) Ion and G protein coupled receptor
d) Protein and gated ion channel receptor
d) Protein and gated ion channel receptor
Starting with a fertilized egg, a series of six cell divisions would produce and early embryo with how many cells?
a) 4
b) 8
c) 16
d) 32
e) 64
e) 64
The photograph below shows a single replicated chromosome consisting of two sister chromatids just before mitosis. This chromosome contains
a) Two single stranded DNA molecules
b) One double-stranded DNA molecule
c) Two double-stranded DNA molecules
d) Many double stranded DNA molecules
e)One single stranded DNA molecules
d) Many double stranded DNA molecules
A particular cell has half as much dna as some other cells in a mitotically active tissue. The cell in question is most likely in which phase of the cell cycle?
a) G1
b) G2
c) Prophase
d) Metaphase
e) Anaphase
a) G1
