Biology 1710 principles of biology i exam ii


Principles of Biology I                                    Name:_____________________________


Exam II, FALL ‘05




Remember to decipher all of the feasible answers for each investigation antecedently choosing the BEST ANSWER. 




  1. Random tumult causes a net exchange-of-settle of substances dissolved in impart from regions where their tension is exalted to regions where their tension is inferior.  This way is named:
    1. active rapture.
    2. osmosis.
    3. diffusion.
    4. facilitated colliquation.
    5. selective permeability.




  1. Glucose in the racedrift is disclosed to penetrate red race cells.  This way does not insist-upon distillation, is biased for glucose (other sugars cannot penetrate via this road) and the net exchange-of-settle is of glucose from the racedrift (where it is at a proportionately exalted tension) into the cell (where the tension is inferior).  This way is most seasy to be an pattern of:
    1. active rapture.
    2. osmosis.
    3. diffusion.
    4. facilitated colliquation.
    5. coupled rapture.




  1. A cell selects up sugar monads from the surrounding mellifluous.  Upon raise examine it is strong that 1) the sugar tension in the cell is already exalteder than that of the surrounding balance, yet the cell continues to be powerful to select up further and 2) as each sugar monad is selectn up a monad of sodium is besides disclosed to penetrate the cell.  This way is seasy to be an pattern of:
    1. active rapture.
    2. coupled rapture.
    3. diffusion.
    4. facilitated colliquation.
    5. endocytosis.




  1. An intracellular receptor that, when activated, regulates the countenance of a gene in the cinvade allure seasy feel all but which of the forthcoming costive footings and/or lordships?
    1. DNA costive lordship.
    2. hormone (signal) costive lordship.
    3. transcription activating lordship.
    4. Inhibitor costive footing.
    5. Such a receptor would seasy feel all indecent of the balancehead footings/domains.




  1. As a gownsman you very carefully inject a small impart-soluble bluish dye monad into a specific cell of a side of stay rational tissue.  After a suitableness you voice that it has spdecipher into nigh cells.  This most seasy happenred accordingly of
    1. active rapture.
    2. gap combinations.
    3. tight combinations.
    4. osmosis.
    5. plasmodesmata.




  1. A extraordinary monad released by one cell binds to receptors on target cells solely in the contiguous “neighborhood” and does not penetrate the race drift.  This is an pattern of: 
    1. autocrine extraordinarying.
    2. exocrine extraordinarying.
    3. direct contiguity extraordinarying.
    4. synaptic extraordinarying.
    5. paracrine extraordinarying.




  1. Protein kinase cascades are frequently compromised in:
    1. cell deportment confession.
    2. signalling roads.
    3. anabolic roads.
    4. catabolic roads.
    5. photosynthesis.




  1. The metabolic road we connect to as glycolysis is set in:
    1. bacteria.
    2. plants.
    3. animals
    4. all eukaryotes and eubacteria but not archaebacteria.
    5. all stay organisms.




  1. Electrons are transmitted from a substrate monad to NAD+, pliant NADH and another result.  The leading substrate has undergone a/an ____ reaction.
    1. oxidation
    2. condensation
    3. reduction
    4. hydrolysis
    5. decarboxylation




  1. In conditions of thermodynamics, the engagement used to draw experimentation is:
    1. kinetic distillation
    2. enthalpy
    3. entropy
    4. operating distillation
    5. allosterism
  2. When a reaction catalyzed by an enzyme is compared to the selfselfsame reaction happenring extraneously an enzyme, the:
    1. distillation of the results has been abated.
    2. distillation of the reactants has been abated.
    3. the exexshift in operating distillation (DG) has been decreased.
    4. the exexshift in operating distillation (DG) has been increased.
    5. the activation distillation has been abated.




  1. A competitive inhibitor of an enzyme would slight:
    1. resemble the substrate.
    2. bind to the enzyme’s allosteric footing.
    3. insist-upon calmodulin to act.
    4. insist-upon a G protein to act.
    5. insist-upon a protein kinase to act.




  1. Which of the forthcoming is NOT commsolely used in intracellular extraordinaryling roads by cells?
    1. adenylyl cyclase
    2. G proteins
    3. calmodulin
    4. desmosomes
    5. All of the balancehead are set in intracellular extraordinarying roads.




  1. An pattern of a combination intentional to anticipate mellifluouss (and other things) from penetrating about a cell (such as in the intestinal epithelial plaster separating the gut from the capillaries) would be a/an:
    1. tight combination.
    2. desmosome.
    3. gap combination
    4. plasmodesmata.
    5. None of the balancehead would character to anticipate mellifluous discrimination.




  1. The complexion of mitosis where you experience the brief chromosomes lined up concurrently the equator of the cell is named:
    1. prophase.
    2. G1
    3. metaphase
    4. G2
    5. anaphase




  1. The electron rapture partnership used to construct ATP in photosynthesis is set:
    1. in the cytoplasm of mesophyll cells.
    2. in the mitochondrial matrix.
    3. in the chloroplast stroma.
    4. in the thylakoid membrane.
    5. in the plasma membrane of bundle sheath cells.




  1. The electron rapture partnership of eukaryotic aerobic respiration pumps protons:
    1. into the cytoplasm.
    2. into the calm ER.
    3. aperverse the plasma membrane.
    4. into the intermembrane immeasurableness of the mitochondrion.
    5. into the mitochondrial matrix.




  1. During mitosis, the cinvade leading “dissolves” during:
    1. prophase.
    2. G1
    3. metaphase
    4. G2
    5. anaphase




  1. The analysis of the cytoplasm and organelles (in eukaryotic cells) happens during:
    1. prophase.
    2. G1.
    3. cytokinesis.
    4. G2.
    5. anaphase.




  1. The theoretical agree in ATP from oxidizing a glucose monad thoroughly to carbon dioxide and impart through aerobic respiration is:
    1. 2.
    2. 6.
    3. 12.
    4. 32.
    5. 36.




  1. Under conditions of very low oxygen, a rational cell chiefly uses _____ as the definite electron acceptor:
    1. carbon dioxide.
    2. water.
    3. NAD+
    4. pyruvate.
    5. Oxygen must regularly be used by rational cells.




  1. The electrons accepted by photosystem I in fresh sets are ultimately transmitted to:
    1. water.
    2. FAD+.
    3. NAD.
    4. NADP+.
    5. oxygen.




  1. A mutated gene that promotes cell analysis when not appropriate is named a/an:
    1. oncogene.
    2. protooncogene.
    3. tumor concealer gene.
    4. growth factor gene.
    5. All of the balancehead are emend answers.




  1. A paltry monad is strong to be powerful to perverse the plasma membrane of a biased cell archetype.  The appropriateties of the way are 1) It is biased; 2) It insist-upons distillation in the conceive of ATP; and 3) It saturates.  This is seasy an pattern of:
    1. simple colliquation.
    2. active rapture.
    3. bulk rapture.
    4. facilitated colliquation.
    5. All of the balancehead wayes distribute these appropriateties.




  1. The objective C4 carbon fixation in a symbolical grass set happens in the:
    1. mesophyll cells.
    2. bundle sheath cells.
    3. stoma.
    4. thylakoids.
    5. Answers A and B are twain emend.




  1. ATP is generated by twain sets and animals using ATP synthase and a proton gradient.   This way is named:
    1. excitation.
    2. electron exhaustion.
    3. substrate phosphorylation.
    4. chemiosmosis.
    5. electron rapture.




  1. The pigment(s) at the reaction center of twain photosystems I and II of fresh sets is/are:
    1. chlorophyll a.
    2. chlorophyll b.
    3. carotenoids.
    4. cytochrome oxidase.
    5. All of the balancehead are pigments set at these reaction centers.




  1. The results of a infallible reaction feel a inferior operating distillation resemblingize than the reactants.  This reaction is best drawd as being:
    1. anabolic.
    2. catabolic.
    3. exergonic.
    4. endergonic.
    5. entropic.




  1. CAM sets feel helpful to parched climates by:
    1. utilizing solely the black reactions for photosynthesis.
    2. not using impart as an electron donor for photosynthesis.
    3. using solely bundle sheath cells for photosynthesis.
    4. eliminating stomata in their leaves.
    5. fixing carbon at duskiness.




  1. The definite result of a metabolic road inhibits an forthcoming enzyme in the road.  What engagement best draws this way?
    1. competitive prohibit.
    2. feedback prohibit
    3. cooperativity
    4. distillation coupling
    5. intracellular extraordinaryling




  1. Prokaryotes multiply by a way disclosed as:
    1. cytokinesis.
    2. mitosis.
    3. meiosis.
    4. transformation.
    5. binary fission.




  1. The sister chromatids of a metacomplexion chromosome are parted at the:
    1. chiasma.
    2. centriole.
    3. centromere.
    4. centrosome.
    5. desmosome.




  1. The chromosomes are replicated during what complexion of the cell cycle?
    1. G1
    2. anaphase
    3. S
    4. prophase
    5. G2






  1. The chromosomes migrate internal the oppofooting poles of the cell during what complexion of mitosis?
    1. prophase
    2. anaphase
    3. telophase
    4. metaphase
    5. cytokinesis




  1. The definite electron acceptor in fresh sets for photosystem II is:
    1. oxygen.
    2. water.
    3. NAD.
    4. NADP.
    5. photosystem I.




36.  The detail invest of chromosomes that an specific possesses is named their:


a.       karyotype.


b.      homologue.


c.       haploid.


d.      phenotype.


e.       mitotic correlative.




37.  Photosynthesis by sets uses what archearchemold of easy most efficiently?


a.       infrared


b.      green


c.       blue


d.      ultraviolet


e.       Due to a rank of accomplice photosynthetic pigments, sets use nforthcoming all wavelengths of easy after a while resembling pliancy.




38.  The basic cite part or edifice obstruct of eukaryotic chromatin is the:


a.       chromatid.


b.      nucleosome.


c.       histone.


d.      centromere.


e.       replisome.




39.  Most genes that a exalteder eukaryotic cell is directing (or might be insist-upond to direct in the forthcoming) would be set in:


a.       euchromatin.


b.      kinechores.


c.       heterochromatin.


d.      centromeres.


e.       telomeres.




40.  A rational bark cell has a whole of _____ chromosomes.


a.       20


b.      23


c.       40


d.      46


e.       50






41.  In the neglect of oxygen, rational cells amount lactate (lactic severe).  The end of this is to:


a.       feed it into glycolysis.


b.      feed it into Kreb’s cycle.


c.       amount NADH.


d.      regenerate NAD+.


e.       allow chemiosmosis to happen.




42.  The farthest electron acceptor in aerobic respiration is:


a.       oxygen.


b.      carbon dioxide.


c.       water.


d.      NADH.


e.       NADP.




43.   The fountain of the electrons that ignoring through the photosystems during photosynthesis by fresh sets is:


a.       carbon dioxide.


b.      NADH.


c.       NADPH.


d.      water.


e.       rubisco.




44.  An organism does not insist-upon any radical monads as distillation fountains or for any other dietary insist-uponment.  This organism would seasy be classified as a/an:


a.       hetereogroph.


b.      auxotroph.


c.       fermenter.


d.      anaerobe.


e.       autotroph.




45.  Where (in a eukaryotic cell) does glycolysis select settle?


a.       mitochondrial matrix


b.      cytoplasm


c.       nucleus


d.      mitochondrial inter-membrane immeasurableness


e.       chloroplast




  1. An egg is fertilized by a sperm to amount a specific cell named a.
    1. binary disincorporate result
    2. spermatocyte.
    3. oocyte.
    4. Barr organization.
    5. zygote.




  1. The arrest partnership of homologous chromosomes during procomplexion I of meiosis is named:
    1. prophasian pairing.
    2. linkage.
    3. syngamy.
    4. diploidy.
    5. synapsis.




  1. Haploid cells which are amountd for the end of swarming by diploid organisms are named:
    1. zygotes.
    2. somatic cells.
    3. gametes.
    4. chiasma.
    5. synapsis.




  1. During meiosis, the appropriate command of the complexions is:
    1. prophase, metaphase, telophase, anaphase.
    2. prophase, anacomplexion ,metaphase, telophase.
    3. metaphase, prophase, telophase, anaphase.
    4. prophase, metaphase, anaphase, telophase.
    5. anaphase, prophase, metaphase, telophase.




  1. Chiasmata conceive during:


a.       anacomplexion I.


b.      procomplexion I.


c.       telocomplexion II.


d.      procomplexion II.


e.       metacomplexion I.




  1. With i-elation to meiosis, centromeres cleave during:
    1. metacomplexion I.
    2. procomplexion I.
    3. anacomplexion I.
    4. methacomplexion II.
    5. anacomplexion II.




  1. A rational cell in metacomplexion II of meiosis would feel a whole of  ______ chromatids.
    1. 23
    2. 96
    3. 46
    4. 46 pair
    5. None, the centromeres feel already cleave.






53.  Crossing balance happens during which complexion of meiosis?


a.       Procomplexion I


b.      Metacomplexion I


c.       Anacomplexion II


d.      Telocomplexion I


e.       Anacomplexion I