Test
BIO EXAM 3
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Preguntas del test (50)
1Energy for all life on earth ultimately comes from photosythesis.
- AVerdadero
- BFalso
2Which of the following is not a light-dependent reaction:
- APrimary Photoevent
- BCharge seperation
- CElectron Transport
- DCarbon Fixation
- EChemiosmosis
3The chlorophyll involved in photosynthesis
- AChloroplast stroma
- BThylakoid membrane
- CThylakoid lumen
- DChloroplast inner membrane
- EStroma lamella
4Which of the following pigments are used in photosynthesis?
- AA. Chlorophyll a
- BB. Chlorophyll b
- CC. Carotenoids
- DA and B are correct
- EA, B, and C are all correct
5The range and efficiency of a photon molecule's capability of absorbing light is called a(n)
- AAbsorption spectrum
- BAction spectrum
- CExcitation spectrum
- DEmission spectrum
6The primary pigment of photosynthesis is:
- AChlorophyll a
- BChlorophyll b
- CCarotenoids
7The relative effectiveness of different wavelengths of light in promoting photosynthesis is called a(n):
- AExcitation spectrum
- BAbsorption spectrum
- CAction spectrum
- DEmission spectrum
8The part of a photosystem where light is captured is called the:
- AReaction center
- BPigment complex
- CReduction center
- DElectron transport chain
- EAntenna complex
9The chlorophyll molecule that can pass excited electrons out of the photosystem are part of the:
- AReaction center
- BPigment complex
- CReduction center
- DElectron transport chain
- EAntenna complex
10Photosystem II replaces electrons it transfers to the electron transport chain from:
- AA. Water
- BB. NADPH
- CC. Oxygen
- DA and B are both correct
- EA, B, and C are all correct
11Photosystem II replaces electrons it transfers to the electron transport chain from:
- AWater
- BPhotosystem I
- CNADPH
- DCarbon Dioxide
- ESugar
12Protons moved by the electron transport chain in photosynthesis are collected in the:
- AChloroplast stroma
- BIntermembrane space of the chloroplast
- CMitochondrial matrix
- DThylakoid lumen
- EChloroplast
13The direct source of energy that ATP synthase to produce ATP during photosythesis is:
- AElectrons from light
- BH+ moving down its gradient
- CGlucose
- DNADPH
- ECO2
14What molecules provide the reduction potential during the Calvin cycle?
- AATP
- BCO2
- CGlucose
- DNAD
- ENADPH
15Which molecule from the light reactions provide the energy to drive the endergenic reactions of carbon fixation?
- AATP
- BNADPH
- CWater
- DCO2
16The enzyme that fixes carbon, that is converting CO2 gas into a solid, is called Rubisco
- AVerdadero
- BFalso
17How many turns of the Calvin Cycle are required to fix enough carbon to make 1 glucose molecule?
- A1
- B2
- C3
- D4
- E6
18The enzymes that carry out the carbon fixation are found in the:
- AGranum
- BStroma
- CThylakoid membrane
- DThylakoid lumen
- EStroma lamella
19The two products of photosythesis that are essential for all life on earth include:
- AA. Sugar
- BB. Water
- CC. Oxygen
- DA and C are correct
- EB and C are correct
20The type of cell signaling where cells release chemical messengers that impact cells in the immediate area:
- ASynaptic signaling
- BEndocrine signaling
- CAutocrine signaling
- DParacrine signaling
- EDirect contact signaling
21The type of cell signaling where the chemical messenger travels to targets cells in the blood stream is called:
- AEndocrine signaling
- BSynaptic signaling
- CAutocrine signaling
- DParacrine signaling
- EDirect contact signaling
22The enzyme that adds a phosphate group from a protein is called a:
- AProtein Kinase
- BPhosphorlyation Reversase
- CProtein Phosphate
- DInactivationase
23The type of channel that opens to let a specific ion pass in response to a ligand binding is called a(n):
- AChemically gated ion channel
- BEnzymatic receptor
- CG-protein coupled receptor
- DIntracellular receptor
24The type of receptor that binds to steroid hormones is called a(n):
- AChemically gated ion channel
- BEnzymatic receptor
- CG-Protein coupled receptor
- DIntracellular receptor
25The receptors that are almost always are protein kinases and act like allosteric enzymes are called:
- AChemically gated ion channel
- BEnzymatic receptor
- CG-protein coupled receptor
- DIntracellular receptor
26Steroid hormone receptors usually act to regulate gene expression
- AVerdadero
- BFalso
27Which of the following is one of the three functional domains of the steroid hormone receptor?
- AA. Hormone binding domain
- BB. DNA-binding domain
- CC. Cell Metabolism
- DA and B are both correct
- EA and C are both correct
28Receptor tyrosine kinases regulate which of the following domains of the steroid hormone receptor?
- AA. Cell proliferation
- BB. Cell migration
- CC. Cell metabolism
- DA and C are both correct
- EA, B, and C are all correct
29When tyrosine kinases are activated they:
- AActivate a G protein
- BDimerize and autophosphorylate
- CStimulate an enzyme to create a second messenger
- DOpen an ion channel
- EStimulate a phosphatase
30A series of protein kinases that phosphorylate each other in succession is called a(n):
- AAmplification cascade
- BPhosphorylation cascade
- CSecond messenger cascade
31The protein kinase that phosphorylates and activated Erk in the MAP kinase cascade is called:
- ARas
- BPhospholipase C
- CMEK
- DRaf
- EAdenylyl cyclase
32Ras is:
- AA. A small GTP binding protein
- BB. Activates the MAP kinase cascade
- CC. Is mutated in over 30% of human cancers
- DA and C are both correct
- EA, B, and C are all correct
33Guanine nucleotide exchange factors (GEFs) stimulate:
- AA G protein's GTPase activity to hydrolyze GTP
- BA G protein to release GDP
- CA G protein to release GTP
- DA G protein to phosphorylate GDP to GTP
- EA G protein to bind to a receptor
34Which of the three subunits of a heterotrimeric G protein bind GTP?
- Aa
- Bb
- Cy
35The enzyme adenylyl cyclase produces:
- ACa++
- BDAG
- CIP3
- DcAMP
- EcGMP
36The enzyme activated by cAMP is:
- AProtein kinase C
- BProtein kinase A
- CMAPK
- DRas
- EPhospholipase C
37Which of the following second messengers are produced directly or indirectly by phospolipase C?
- AA. Ca++
- BB. DAG
- CC. IP3
- DB and C are both correct
- EA, B, and C are all correct
38Both glucagon and epinephrine can stimulate the mobilization of glucose through the same pathway.
- AVerdadero
- BFalso
39Bacterial divide using sexual reproduction
- AVerdadero
- BFalso
40How many chromosome pairs do human cells have?
- A12
- B22
- C23
- D46
41When DNA in a nucleus of a cell that is not dividing is being used for protein expression it is called
- AChromatin
- BHeterochromatin
- CNuclear chromatin
- DEuchromatin
42The phase of the cell cycle where DNA is replicated is called the:
- AG1 phase
- BS phase
- CG2 phase
- DM phase
- ECytokinesis
43The phase of the cell cycle where organelles replicate and microtubules organize is called the:
- AG1 phase
- BS phase
- CG2 phase
- DM phase
- ECytokinesis
44The location where two chromatids are attached to each other is called the:
- ACentromere
- BCohesion
- CSolenoid
- DNucleosome
45The phase of mitosis wher the chromosomes align at the equator
- AProphase
- BPrometaphase
- CMetaphase
- DAnaphase
- ETelophase
46The phase of mitosis where microtubules attach to the kinetochores of the sister chromatids
- AProphase
- BPrometaphase
- CMetaphase
- DAnaphase
- ETelophase
47The cell cycle checkpoint that is impacted by the presence of growth factors is:
- AG1/S Checkpoint
- BG2/M Checkpoint
- CSpindle Checkpoint
48Mitosis-promoting factor (MPF) is complex between
- AA. A cyclin-dependent kinase
- BB. A growth factor
- CC. A cyclin
- DA and B are both correct
- EA and C are both correct
49Proto-oncogenes are normal cellular genes that become oncogenes when mutated which allows them to cause cancer
- AVerdadero
- BFalso
50The type of gene that requires mutations in both copies of the gene to cause cancer
- AProto-oncogene
- BTumor suppressor gene
- COncogene
- DTumor promoter gene
Información
- Descripción
- Biology Test sobre BIO EXAM 3, creado por Erica Winters el 02/12/2019.
- Autor
- Erica Winters
- Idioma
- English
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