test 2 multiple choice Flashcards
ATP has______ phosphates
A. 3
B. 2
C. 5
D. 4
A. 3
in a redox reaction the substance that receives electrons is ________
A. neutralized
B. reduced
C. oxidized
D. accepted
B. reduced
transport, cell-cell recognition, and signal transduction are all functions of _________
A. phospholipids
B. membrane proteins
C. cholesterol
D. fatty acids
B membrane proteins
when ATP releaces some energy, it also releases inorganic phosphate. what purpose does this serve in the cell?
A. it can be added to other molecules to activate them
B. it can be added to water and excreted as a liquid
C. it can be excreted as metabolic waste
D. it can enter the nucleus to affect gene expression
A -it can be added to other molecules to activate them
one function of both alcohol fermentation and lactic acid fermentation is to
A. reduce NAD+ to NADH
B. oxidize FADH2 to FAD+
C. oxydize NADH to NAD+
D. none of the above
C. -oxidize NADH to NAD+
______ is a measure of disorder
A. enthalpy
B. entropy
C. Diffusion
D. thermodynamics
B. -entropy
the region of an enzyme that binds to a substrate is called the _______ site
A. engagement
B. active
C. inducer
D. binder
B. -active
which of the following metabolic processes can occur without a net influx of energy from some other process?
A. ADP + inorganic phosphate–>ATP+H2O
B. C6H12O6+6O2—>6CO2+6H2O
C. 6CO2+6H2O–>C6H12O6+6O2
D. amino acids—> proteins
B. C6H12O6+6O2—>6CO2+6H2O
________ pathways breakdown larger molecules into smaller molecules and release energy
A. catabolic
B. anabolic
C. dehydration
D. signal
A -catabolic
the key alosteric enzyme that helps to regulate cellular respiration is ______
A. aldolase
B. phosphofructokinase
C. hexokinase
D. pyruvate kinase
B. -phosphofructokinase
the hydrolysis of ATP to ADP is a _________ reaction
A. exergonic
B. endergonic
C. non-spontaneous
D. anabolic
A -exergonic reaction
_______ amplifies the response of enzymes to substrates
A. competitive inhibition
B. noncompetitive inhibition
C. cooperativity
D. denatuation
C. -cooperativaty
in cellular respiration, tis process produces the most ATP
A. glycolysis
B. citric acid cycle
C. electron transport chain/oxidative phosphorylation
D. substrate level phosphorylation
C -electron transport chain
-oxidative phosphorylation
__________ is the process that converts light energy into chemical energy
A. cellular respiration
B. glycolysis
C. osmosis
D. photosynthesis
D. photosynthesis
_____ is a green pigment that is responsible for the light reactions of photosynthesis
A. carotenoids
B. chlorophyll a
C. chlorophyll b
D. indigo
B. chlorophyll a
in linear electron flow (during the light reactions) _______ is produced
A. ATP only
B. sugars
C. ATP and NADPH
D. carbon dioxide
C. ATP and NADPH
the Calvin cycle reduces carbon dioxide to _________
A. water
B. oxygen
C. NADPH
D. sugar
D. sugar
the stages of mitosis are _______________
A. prophase, metaphase, anaphase, telophase
B. metaphase, anaphase, telophase, prophase
C. prophase, anaphase, metaphase, telophase
D. prophase, telophase, metaphase, anaphase
A prophase, metaphase, anaphase, telophase
which of the following occurs during s phase
A. condensation of the chromosomes
B. replication of the DNA
C. separation of the sister chromatids
D. spindle formation
B. -replication of the DNA
sperm and egg cells are __________
A. diploid
B. somatic cells
C. gametes
D. epithelial cells
C. gametes
the X and Y chromosomes are sex chromosomes. all of the other chromosomes are called ___________
A. hapliosomes
B. karyosomes
C. histones
D. autosomes
D. autosomes
how many times does DNA replicate during the formation of gametes (the meiotic process)?
A. once
B. twice
C. 4 times
D. never
A. once
in asexual reproduction genetically identical offspring are produced by ______
A. meiosis
B. mitosis
C. apoptosis
D. fusion
B. mitosis
a human cell containing 22 autosomes and a Y chromosome is a _______
A. zygote
B. sperm
C. male liver cell
D. egg (oocyte)
B. sperm
meiosis 2 is similar to mitosis in that ________________
A. DNA replicates before the division
B. diploid cells are produced
C. sister chromatids separate during anaphase
D. homologous chromosomes synapse
C. sister chromatids separated during anaphase
