Test
KNES 259 - Lecture Midterm Practice Exam
Preguntas del test (54)
1Enzymes...
- Alower activation energy and catalyze reactions
- Bare affected by temperature and pH
- Ccan be regulated and inhibited
- Dare necessary for most body reactions
- Eall of the above
2 Homologous chromosomes move toward opposite poles of a dividing cell during:
- AMitosis
- BMeiosis 1
- CMeiosis 2
- DCytokinesis
- EMore than one is correct
3A white blood cell that destroys bacteria and removes debris would contain many:
- Amitochondria
- Blysosomes
- Cperoxisomes
- Dgolgi bodies
- Enone of the above
4Which component is the LEAST involved in translation and protein production?
- AmRNA
- BDNA
- CtRNA
- DRibosomes
- EAminoacyl-tRNA-synthesase
5What is NOT needed to initiate transcription?
- ATATA Box
- BTranscription factors
- CRNA Polymerase
- D5' Cap and Poly-A-Tail
- ENone of the above are needed
6During aerobic respiration, energy (and electrons) are transferred downhill in which sequence?
- Aglucose →pyruvate→ATP→oxygen
- Bfood→NADH→electron transport chain→ATP
- Cfood→glycolysis→ATP→NADH
- Dglucose→ATP→electron transport chain→NADH
- Efood→glycolysis→kreb’s cycle→electron transport chain→ATP
7Choose the incorrect statement about DNA replication:
- ALigase connects the okazaki fragments after they are formed
- BOkazaki fragments are formed on the leading strand
- CPrimase lays down an RNA primer to initiate an okazaki fragment
- DPolymerase I replaces the RNA primer with DNA
- Enone – all of the above are correct
8During mitosis, which is not a part of prophase?
- Acondensing of the chromatin
- Bdisintegration of the nuclear membrane
- Ccrossing over
- Dmovement of the centrioles
- Enone –all of the above are correct
9Which of the following is true concerning cancer cells?
- AThey do not exhibit density-dependent inhibition when growing in culture.
- BWhen they stop dividing, they do so at random points in the cell cycle.
- CThey are not subject to cell cycle controls.
- DAll of the above
- EOnly two of the above
10Which of the following statements about genes is incorrect?
- AGenes correspond to segments of DNA
- BMany genes contain the information needed for cells to synthesize enzymes and other proteins
- CUnder normal circumstances, each chromosome contains one gene
- DGenetic differences can result from changes in the DNA called mutations
- ENone - all of the above are correct
11Meiosis:
- Acreates gametes for sexual reproduction
- Bresults in 2 daughter cells with half the DNA
- Cdoubles its DNA twice
- Dtwo are correct
- Enone of the above are correct
12The strands that make up DNA are antiparallel. This means that
- Athe twisting nature of DNA creates nonparallel strands
- Bthe 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand
- Cbase pairings create unequal spacing between the two DNA strands
- Done strand is positively charged and the other is negatively charged
- Emore than one is correct
13Choose an incorrect statement about cytokinesis
- Ait involves actin and myosin
- Bit occurs in telophase
- Cit is the splitting of the cytoplasm
- Dnone - all of the above are correct
- Etwo of the above are correct
14NADH
- Ais produced in glycolysis
- Bis produced in Kreb's cycle
- Cshuttles ions to the ETC
- Dall of the above
- Eonly two of the above
15Nucleic acids are the building blocks for
- Aproteins
- Bfats
- CDNA
- Dstarch
- Emore than one is correct
16A red blood cell was placed in a salt solution and got swollen. The solution was:
- Ahypertonic to the cell
- Bisotonic to the cell
- Chypotonic to the cell
- Dnone of the above - osmosis is not invovlved
17How does facilitated diffusion differ from active transport?
- AOnly active transport rewuires energy
- Bonly active transprot binds the molecule in a protein receptor site
- Conly active transport goes against the concentration gradient
- Dall of the above
- Eonly two of the above are correct
18The glycocalyx of the cell membrane may
- Aplay a role in cell communication
- Bhelp with cell orientation
- Cbe a boundary for cell growth
- Dall of the above
- Eonly two of the above are correct
19Chemiosmosis involves the enzyme
- Ahexokinase
- Bphosphofructokinase
- CNa/K ATPase
- DATP synthases
- Enone of the above
20Allosteric control of cellular respiration involves the enzyme
- Ahexokinase
- Bpyruvate kinase
- Cphosphofructokinase
- Daldolase
- Eall of the above
21The final acceptor of electrons in oxidative phosphorylation is
- Aoxygen
- Bwater
- CNADH
- DATP
- ENone of the above
22The first step in metabolism of fatty acids involves
- Aglycolysis
- Bbeta oxidation
- CKreb's cycle
- Doxidative phosphorylation
- Enone of the above
23Which of the following is NOT a function of the membrane proteins?
- Aserve as channels
- Bmembrane enxymes
- Cserve as carriers
- Dserve as receptor sites
- Enone - all of the above are correct
24An example of genetic co-dominance would be
- Askin colour
- Beye colour
- Cblood types
- Dfreckles
- Enone of the above
25Select the correct statement about diffusion:
- Ait depends on random movement
- Bit involves active forces
- Cits rate increases as temperature decreases
- DThe chemical gradient of a substance does not affect it
- Enone of these statements are correct
26A cell placed in a hypertonic solution will
- Ahemolyze
- Bcrenate
- Close water to solution
- Da and c
- Eb and c
27Which of the following mechanisms is not used to transport Na+ within the body cells?
- Achannel transport
- Bco-transport facilitated diffusion
- Cactive transport
- Dfacilitated diffusion - counter-transport
- Enone - all of the above are used
28What mechanisms are used to transport glucose in the cell?
- Achannel mediated transport
- Bdiffusion
- Cactive transport
- Dcarrier-mediated diffusion
- Enone of the above
29Which of the following is not associated with the cell cytosol?
- Asynthesis of proteins for export from the cell
- Benzymatic regulation of glycolytic metabolism
- Cpresence of cytoskeletal elements
- Dglycolysis
- Enone - all are associated with the cytosol
30Phospholipids
- Aeach consist of a polar, hydrophilic phosphate head and two non-polar, hydrophobic fatty acid tails
- Bare aligned in a lipid bilayer in the plasma membrane
- Cserve as carrier molecules for lipid-soluble substances
- Dall of the above are correct
- Eonly two of the above are correct
31During prophase 1, a homologous pair of chromosomes consists of
- Afour chromosomes and two chromatids.
- Btwo chromosomes and two chromatids.
- Ctwo chromosomes and four chromatids.
- Done chromosome and two chromatids.
- Eone chromosome and four chromatids.
32Okazaki fragments
- Aare a type of Japanese sushi
- Bare a new set of yoga movements
- Care an asian painting technique
- Dare a replication segment on the lagging strand
- Enone of the above
33In cell communication, which of the following would NOT be a second messenger?
- Acalcium
- Bcalmodulin
- CcAMP
- Da protein hormore
- Enone - all are considered second messengers
34Plasma membranes are _____, which means that some chemicals move easily through plasma membrane while other chemicals do not.
- Aselectively permeable
- Bconcentration graded
- Celectrically graded
- Dselectively soluble
- Eelectrical insulators
35This is the transport process by which gases, like O2 and CO2, move through a membrane
- Aosmosis
- Bactive transport
- Csecondary active transport
- Dsimple diffusion
- Eendocytosis
36A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA per nucleus. Those cells would have ________ picograms at the end of the S phase and ________ picograms at the end of G2
- A8;8
- B8;16
- C16;8
- D16;16
- E16;32
37If the non-diffusible solute concentration is greater inside of the cell than outside the cell, water will move by osmosis
- Ainto the cell
- Bout of the cell
- Cinto and out of the cell at the same rate resulting in no net water movement
- Dmore information is needed
38Microfilaments, intermediate filaments and microtubules are all components of a cell's
- Acytoskeleton
- Bnucleus
- Cplasma membrane
- Dflagella
- Eribosome
39Which of the following membrane-enclosed organelles modifies, sorts, and packages proteins destined for other regions of the cell or for export?
- Aendoplasmic reticulum
- Bgolgi complex
- Cperoxisomes
- Dnucleus
- Eproteasome
40This portion of a DNA segment does not code for a protein
- ARNA
- Bintrons
- Cexons
- Dpolyribosome
- Eribosome
41During this phase of cell division, organelles duplicate and centrosome replication begins
- Ainterphase
- Bprophase
- Cmetaphase
- Danaphase
- Etelophase
42null
- Achoose this
- Bdo not choose this
43The following is a particular sequence of base triplet on a DNA molecule: ATG. What is the corresponding codon for the mRNA?
- ATAC
- BGUA
- CGTA
- DCTA
- EUAC
44The following is a particular sequence of codon on mRNA: ACU. What is the corresponding anti-codon for the tRNA?
- AUGA
- BUCA
- CTGA
- DTCA
- EAUC
45Somatic cells contain only 1 nucleus. An exception to this would be
- Ared blood cells
- Bmucscle cells
- Cneurons
- Dconnective tissue
- Etwo of the above are exceptions
46In this type of transport process, a solute (e.g. glucose) binds to a specific carrier protein on one side of the membrane. This binding induces a conformational change in the carrier protein that results in the solute moving down its concentration gradient to the other side of the membrane
- Aosmosis
- Bactive transport
- Csecondary active transport
- Dfacilitated diffusion
- Eendocytosis
47A mutation in which part of a gene is likely to be most damaging to a cell?
- Aintron
- Bexon
- Ctelomere
- DPoly A tail
- Eall would be equally damaging
48Nucleotides are to ________________ as _____________________ are to proteins.
- Aamino acids; polypeptides
- BDNA; amino acids
- Cgenes; enzymes
- Dribosomes; enzymes
- Enone of the above
49In the absence of oxygen,
- Abeta oxidation occurs
- Bpyruvate converts to lactic acid
- Cglycolysis stops
- Dall of the above
- Etwo of the above
50Choose the incorrect statement about DNA and DNA replication
- Acytosine always binds with guanine
- Bthe DNA strands are anti-parallel
- Cin replication, the nucleotides are added to the daughter strand at the 5' end
- Dthe leading strand builds its daughter strand toward the replication fork
- Enone - all of the above are correct
51Epithelial tissue
- Ais used as a covering of body surfaces
- Bis used as a lining of body cavities and hollow organs
- Cis used to form glands
- Dusually has a free surface that interacts with the external environment
- Eall of these answer choices are correct
52Which type of epithelial tissue forms the most superficial layer of the skin?
- ASimple squamous epithelium
- BSimple cuboidal epithelium
- CStratified squamous epithelium
- DStratified cuboidal epithelium
- ESimple columnar epithelium
53In which of the following locations would you most likely find transitional epithelial cells?
- ALining of the esophagus
- BOuter layer of the skin
- CLining of the urinary bladder
- DOn the surface of the heart
- ECovering skull bones
54The main function of dense regular connective tissues is
- Astoring minerals for later use
- Bforming stroma of soft organs
- Creducing heat loss from the body surface
- Dproviding strong attachment with tendons and ligaments
- Eproviding elasticity to stretchable organs
Información
- Descripción
- Practice Exam for Kinesiology 259 Physiology Section
- Autor
- Amy Goulden
- Idioma
- English
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