KAHOOT EXAM 2 Flashcards
When an enzyme changes shape to promote a reaction it enters the:
a) Intermediate state
b) Catalyzing state
c) Transformation state
d) Transition state
d) Transition state
What is the primary function of enzymes in biological systems?
a) To store energy
b) To transport molecules across cell membranes
c) To catalyze biochemical reactions
d) To provide structural support to cells
c) To catalyze biochemical reactions
The Great Oxidation Event gave rise to:
a) Photosynthetic organisms
b) Gymnosperms
c) The first single-celled organisms
d) Eukaryotes
d) Eukaryotes
The leaves of deciduous change colour in fall because:
a) anthocyanin production ramps up
b) Chlorophylls are recycled
c) Less common accessory pigments become visible
d) All of the above
d) All of the above
In the light-dependent reactions of photosynthesis, water gives up its electrons to:
a) Coenzyme Q (CoQ)
b) Photosystem I
c) Photosystem II
d) ATP synthase
c) Photosystem II
In the light-independent reactions of photosynthesis, CO2 and RuBP are combined with the help of:
a) Adenosine diphosphate
b) Alcohol dehydrogenase
c) Rubisco
d) Hexokinase
c) Rubisco
In aerobic cellular respiration, where does glycolysis occur?
a) Mitochondrial matrix
b) Cytoplasm
c) Inner mitochondrial membrane
d) Nucleus
b) Cytoplasm
The (net) yield of glycolysis is:
a) 2 ATP and 2 NADPH
b) 2 ATP and 2 NADH
c) 4 ATP and 2 NADH
d) 2 ATP and 4 NADPH
b) 2 ATP and 2 NADH
Where does the Calvin cycle, a part of photosynthesis, take place?
a) Thylakoid membrane
b) Stroma of chloroplasts
c) Mitochondrial matrix
d) Cytoplasm of the cell
b) Stroma of chloroplasts
When an enzyme is deactivated to “turn off” a metabolic pathway, it is called:
a) Positive feedback loop
b) Feedback inhibition
c) Competitive inhibition
d) Negative catalysis
b) Feedback inhibition
The Haber Process is an example of biological catalysis
Vrai
Faux
false, environmental??
Ethanol blocking methanal’s binding to alcohol dehydrogenase is reversible competitive inhibition
Vrai
Faux
true
The step of aerobic cellular respiration that requires oxygen is:
a) Carbon fixation
b) The Calvin cycle
c) The Krebs cycle
d) Electron transfer phosphorylation
d) Electron transfer phosphorylation
Which of the following is NOT a characteristic of enzymes?
a) They lower activation energy
b) They are consumed during the reaction
c) They exhibit specificity for their substrates
d) They can be regulated by environmental factors
b) They are consumed during the reaction
Autotrophs obtain their carbon via:
a) Inorganic forms
b) Sugars
c) Sunlight
d) Organic forms
a) Inorganic forms
After consuming glucose, it enters the blood, then enters cells via
a) Gluts
b) Diffusion
c) Voltage-gated channels
d) The electron transport chain (ETC)
a) Gluts
The longer the wavelength of electromagnetic radiation, the more energy it carries
True
False
False
According to the first law of thermodynamics, energy:
a) Can be created but not destroyed
b) Cannot be created or destroyed, only transformed
c) Can only be converted into kinetic energy
d) Can be converted into matter
b) Cannot be created or destroyed, only transformed
In the NAD+ Regeneration stage of Lactic Acid fermentation, 1 carbon from pyruvate is released as CO2
True
False
false, its 2
The synthesis of acid hydrolases in lysosomes is an example of:
a) Inactive enzyme synthesis
b) Allosteric inhibition
c) Feedback inhibition
d) Lock-and-key substrate binding
a) Inactive enzyme synthesis
What is the product of the Calvin cycle?
a) ATP and NADPH
b) ATP and NADH
c) PGAL
d) Glucose
c) PGAL
When a molecule loses an electron(s), it is reduced.
True
False
False LE0=oxidized
In aerobic cellular respiration, 1 glucose produces a total of:
a) 30 ATP
b) 12 ATP
c) 36 ATP
d) 32 ATP
32 ATP
The “Allo” in Allosteric refers to:
a) The posterior end
b) The anterior end
c) Chemical bonding
d) Other than
d) Other than
