K101 Final Exam Practice Unit 2 Flashcards
(33 cards)
Ch 6-7: A bacterium engulfed by a white blood cell’s phagocytosis will be digested by enzymes within
A. Golgi vesicles
B. vacuoles
C.peroxisomes
D. lysosomes
E. secretory vesicles
D. lysosomes
Ch 6-7: Match the following parts of the cell to its function: Nucleus
A. Sorting of proteins targeted for extracellular secretion
B. Site of cell-cell adhesion and cell recognition
C. Site of transcription of mRNA and tRNA for protein synthesis
D. Synthesis of the steroid hormone testosterone
E. Synthesis of ATP via oxidative phosphorylation
F. Site of rRNA for protein synthesis
G. Synthesis of the insulin receptor, a transmembrane glycoprotein
C. Site of transcription of mRNA and tRNA for protein synthesis
Ch 6-7: Match the following parts of the cell to its function: Mitochondria
A. Sorting of proteins targeted for extracellular secretion
B. Site of cell-cell adhesion and cell recognition
C. Site of transcription of mRNA and tRNA for protein synthesis
D. Synthesis of the steroid hormone testosterone
E. Synthesis of ATP via oxidative phosphorylation
F. Site of rRNA for protein synthesis
G. Synthesis of the insulin receptor, a transmembrane glycoprotein
E. Synthesis of ATP via oxidative phosphorylation
Ch 6-7: Match the following parts of the cell to its function: Nucleolis
A. Sorting of proteins targeted for extracellular secretion
B. Site of cell-cell adhesion and cell recognition
C. Site of transcription of mRNA and tRNA for protein synthesis
D. Synthesis of the steroid hormone testosterone
E. Synthesis of ATP via oxidative phosphorylation
F. Site of rRNA for protein synthesis
G. Synthesis of the insulin receptor, a transmembrane glycoprotein
F. Site of rRNA for protein synthesis
Ch 6-7: Match the following parts of the cell to its function: Rough ER
A. Sorting of proteins targeted for extracellular secretion
B. Site of cell-cell adhesion and cell recognition
C. Site of transcription of mRNA and tRNA for protein synthesis
D. Synthesis of the steroid hormone testosterone
E. Synthesis of ATP via oxidative phosphorylation
F. Site of rRNA for protein synthesis
G. Synthesis of the insulin receptor, a transmembrane glycoprotein
G. Synthesis of the insulin receptor, a transmembrane glycoprotein
Ch 6-7: Match the following parts of the cell to its function: Golgi apparatus
A. Sorting of proteins targeted for extracellular secretion
B. Site of cell-cell adhesion and cell recognition
C. Site of transcription of mRNA and tRNA for protein synthesis
D. Synthesis of the steroid hormone testosterone
E. Synthesis of ATP via oxidative phosphorylation
F. Site of rRNA for protein synthesis
G. Synthesis of the insulin receptor, a transmembrane glycoprotein
A. Sorting of proteins targeted for extracellular secretion
Ch 6-7: Match the following parts of the cell to its function: Smooth ER
A. Sorting of proteins targeted for extracellular secretion
B. Site of cell-cell adhesion and cell recognition
C. Site of transcription of mRNA and tRNA for protein synthesis
D. Synthesis of the steroid hormone testosterone
E. Synthesis of ATP via oxidative phosphorylation
F. Site of rRNA for protein synthesis
G. Synthesis of the insulin receptor, a transmembrane glycoprotein
D. Synthesis of the steroid hormone testosterone
Ch 6-7: Match the following parts of the cell to its function: Extracellular matrix
A. Sorting of proteins targeted for extracellular secretion
B. Site of cell-cell adhesion and cell recognition
C. Site of transcription of mRNA and tRNA for protein synthesis
D. Synthesis of the steroid hormone testosterone
E. Synthesis of ATP via oxidative phosphorylation
F. Site of rRNA for protein synthesis
G. Synthesis of the insulin receptor, a transmembrane glycoprotein
B. site of cell-cell adhesion and cell recognition
Ch 6-7: This cellular protein protects and assists newly forming cytoplasmic proteins while they fold into their functional forms:
A. antibodies
B. enzymes
C. tubular
D. chaperonins
E. signal recognition particles
D. chaperonins
Ch 6-7: Proteins that are manufactured for secretion (export from the cell):
A. are made in the cytosol and transported across the ER membrane
B. are threaded through special pores in the plasma membrane
C. are made in the smooth ER and packaged in transport vesicles
D. have carbohydrates covalently added when proteins are in transport vesicles
E. are made in the rough ER and packed in transport vesicles
E. are made in the rough ER and packed in transport vesicles
Ch 6-7: All of the following are functions of integral membrane proteins except:
A. synthesis of hormones
B. active transport of ions
C. cell-cell adhesion
D. reception of hormone signals like epinephrine
E. attachment to the extracellular membrane
A. synthesis of hormones
Ch 6-7: Mammalian blood contains the equivalent of 0.15 M NaCl. Seawater contains the equivalent of 0.45 M NaCl. What will happen if red blood cells are transferred to seawater?
A. the blood cells will take up water, swell, and eventually burst
B. NaCl will passively diffuse into the red blood cells
C. Water will leave the cells, causing them to shrivel and collapse
D. NaCl will be exported from the red blood cells by facilitated diffusion
E. The blood cells will expend ATP for active transport of NaCl into the cytoplasm
C. Water will leave the cells, causing them to shrivel and collapse
Ch 6-7: All of the following are functions of integral membrane proteins except:
A. synthesis of hormones
B. active transport of ions
C. cell-cell adhesion
D. reception of hormone signals like epinephrine
E. attachment to the extracellular membrane
A. synthesis of hormones
Ch 8: Which of the following types of reactions would decrease the entropy within a cell?
A. anabolic reactions
B. hydrolysis
C. respiration
D. digestion
E. catabolic reactions
A. anabolic reactions
Ch 8: SELECT ALL THAT APPLY: Why is ATP an important molecule in metabolism?
A. its hydrolysis provides an input of free energy for exergonic reactions
B. it provides energy coupling between exergonic and endergonic reactions
C. its terminal phosphate group has unusually strong covalent bonds that generate free energy
A. its hydrolysis provides an input of free energy for exergonic reactions
B. it provides energy coupling between exergonic and endergonic reactions
Ch 8: increasing the substrate concentration in a reaction could overcome which of the following?
A. denaturalization of the enzyme
B. allosteric inhibition
C. competitive inhibition
D. saturation of the enzyme activity
E. insufficient cofactors
C. competitive inhibition
Ch 8: SELECT ALL THAT APPLY: The primary way that cells do work is called energy coupling, using ATP. Which statements below accurately defines energy coupling?
A. anabolic reactions drive catabolic reactions
B. exergonic reactions drive endergonic reactions
C. endergonic reactions drive exergonic reactions
D. ATP hydrolysis releases free energy that can be coupled to an endergonic reaction via the formation of a phosphorylated intermediate
E. endergonic and exergonic reactions occur independently of each other
B. exergonic reactions drive endergonic reactions
D. ATP hydrolysis releases free energy that can be coupled to an endergonic reaction via the formation of a phosphorylated intermediate
Ch 8: The general name for an enzyme that transfers phosphate groups from ATP to a protein is:
A. phosphorylase
B. phosphatase
C. protein kinase
D. ATPase
E. protease
C. protein kinase
Ch 9 & 10: why are carbohydrates and fats considered high energy foods?
A. they have a lot of oxygen atoms
B. they have no nitrogen in their makeup
C. they can have very long carbon skeletons
D. they have a lot of electrons associated with hydrogen
E. they are easily reduced
D. they have a lot of electrons associated with hydrogen
Ch 9 & 10: In liver cells, the inner mitochondrial membranes are about five times the area of the outer mitochondrial membranes. What purpose must this serve?
A. it allows for an increased rate of glycolysis
B. it allows for an increased rate of the citric acid cycle
C. it increases the surface for oxidative phosphorylation
D. it increases the surface for substrate-level phosphorylation
E. it allows the liver cell to have fewer mitochondria
C. it increases the surface for oxidative phosphorylation
Ch 9 & 10: Why is the Calvin cycle said to be dependent on the light reactions?
A. the light reactions generate the molecular oxygen needed for the production of sugars in the Calvin cycle
B. the G3P produced in the light reactions is oxidized in the Calvin cycle
C. the light reactions produce the ATP energy and NADPH for sugar production in the Calvin cycle
D. RuBP produced in the light reactions facilitates CO2 fixation in the Calvin cycle
E. photons of light that are byproducts of the light reactions provide the energy for the Calvin cycle
C. the light reactions produce the ATP energy and NADPH for sugar production in the Calvin cycle
Ch 9 & 10: SELECT ALL THAT APPLY: Which of the 4 kinase enzymes might be the enzyme shown below?
A. hexokinase
B. pyruvate kinase (PK)
C. phosphofructokinase (PFK)
D. phosphoglycerokinase (PGK)
B. pyruvate kinase
D. phosphoglycerokinase
Ch 9 & 10: One function of alcohol and lactic acid fermentation is to:
A. reduce NAD+ to NADH
B. reduce FAD+ to FADH2
C. oxidize NADH to NAD+
D. oxidize FADH2 to FAD+
C. oxidize NADH to NAD+
Ch 9 & 10: P680+ is said to be the strongest biological oxidizing agent. Why?
A. it is the receptor for the most excited electron in either photosystem
B. it is the molecule that transfers electrons to plastoquinone (Pq) of the electron transfer systen
C. it transfers its electrons to reduce NADP+ to NADPH
D. this molecule has a stronger attraction for electrons than oxygen, to obtain electrons from water.
E. it has a positive charge
D. this molecule has a stronger attraction for electrons than oxygen, to obtain electrons from water.
