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Principles of Biology I - Unit 2 Quiz
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Questions in this quiz (22)
1The breakdown of large molecules into smaller molecules is referred to as
- AAnabolism
- BCatabolism
- CMetabolism
- DNone of the above
2The second law of thermodynamics states that
- AEntropy in the universe is continually increasing
- BEntropy in the universe is continually decreasing
- CDisorder in the universe is continually decreasing
- DEnergy in the universe is continually increasing
3Kinetic energy is
- AAlways constant
- BConsidered stored energy
- CThe ultimate source of energy on Earth
- DThe energy of motion
4The extra energy required to start a chemical reaction is known as
- AKinetic energy
- BActivation energy
- CPotential energy
- DFree energy
5Which of the following is NOT correct?
- ALactic acid fermentation produces lactic acid and carbon dioxide
- BLactic acid fermentation can occur in our muscles
- CAlcohol fermentation produces alcohol and carbon dioxide
- DAlcohol fermentation is used to make beer and wine
6A molecule that competes with the substrate for the active site on an enzyme is called a
- ACompetitive inhibitor
- BNon-competitive inhibitor
- CCompetitive promoter
- DNon-competitive promoter
7 The breakdown of one molecule of glucose into two molecules of pyruvate is called _______________.
- APrep step
- BPhotosynthesis
- CFermentation
- DGlycolysis
8Where do we obtain the reactants needed for cellular respiration?
- AFrom the foods we eat and the air we breathe
- BFrom plants only
- CFrom other animals only
- DFrom dairy products
9The process of chemiosmosis occurs as a result of the development of a proton gradient within the mitochondrion. This gradient is responsible for driving the formation of what molecule?
- APyruvate
- BATP
- CWater
- DRuBP
10During photosynthesis, carbon dioxide from the atmosphere is fixed to which molecule in the Calvin Cycle?
- AChlorophyll
- BNADPH
- Cglucose
- DRuBP
11In the light reactions, when light strikes the photosynthetic pigments, what is the immediate result?
- AElectrons are fused to form ATP
- BCarbon fixation occurs
- CExcited electrons are passed to electron acceptors
- DGlucose is produced
12What gas enters the stomata on the underside of the leaves and is necessary for photosynthesis?
- ACarbon dioxide
- Boxygen
- Cnitrogen
- DRuBP
13For every molecule of glucose that is formed during photosynthesis, how many molecules of carbon dioxide must enter the Calvin Cycle?
- A1
- B3
- C6
- D12
14The light-dependent reactions of photosynthesis are responsible for the production of
- AGlucose
- BCarbon dioxide
- CATP and NADPH
- DWater
15Succulent plants including cacti utilize the C4 pathway during the night and the C3 pathway during the day within the same cell. These plants are considered to be __________ plants.
- AC3
- BC4
- CCAM
- DC7
16This process, whereby oxygen competes with carbon dioxide for binding with RuBP and leads to the oxidation of RuBP and the reversal of carbon fixation, is called _____________ and results in decreasing glucose production by up to 50%.
- ATranspiration
- BPhotorespiration
- CCellular respiration
- DRubisco fixation
17Which of the following is NOT involved in binary fission in prokaryotes?
- AReplication of DNA
- BElongation of the cell
- CSeparation of daughter cells by septum formation
- DAssembly of the nuclear envelope
18In the nucleus, this material is composed of histone proteins and DNA
- Anucleolus
- Bnuclear envelope
- Cribosomes
- DChromatin
19Comparing cell cycle controls to driving a car, what would a tumor suppressor gene be
analogous to?- AThe car’s brakes
- BThe car’s gas pedal
- CThe car’s steering wheel
- DThe gas tank
20The kinetochore
- AIs the point of constriction on the chromosome
- BForms the spindle apparatus
- CIs a protein that DNA wraps itself around
- DFunctions as an attachment site for microtubules, allowing chromosomes to be separated during mitosis
21One of two identical copies of each chromosome, still linked at the centromere is referred to as a
- ASister chromatid
- BBrother chromatid
- CHomologue
- Dhaploid
22Fill in the five empty spaces in the chart below:
- Akreb cycle
- B2
- C32-34
- D2
- E0
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- User has deleted their subject information Quiz on Principles of Biology I - Unit 2 Quiz, created by Deleted user on 13/10/2021.
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- Created on 13 Oct 2021 · updated on 14 Oct 2021
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