Which of the following is not part of Photosynthesis?
a) Light reactions
b) Carbon reactions
c) Thylakoid membrane
d) CO2 Supply process
Answer: c)...
Which of the following is not part of Photosynthesis?
The dormancy breaking mechanism of an immature embryo requires:
The dormancy breaking mechanism of an immature embryo requires:
a) cold temperatures for germination.
b) water to stimulate embryo growth.
c) further...
Which of the following statements best applies to Eukaryotes?
Which of the following statements best applies to Eukaryotes?
a) Represent the earliest life forms
b) Cells lack membrane bound organelles
c) Are...
A plant tissue that is involved in structural rigidity in young plants is:
A plant tissue that is involved in structural rigidity in young plants is:
a) Phloem
b) Parenchyma
c) Cambium
d) Collenchyma
Answer: d) Co...
The base temperature is normally calculated as the temperature at which:
The base temperature is normally calculated as the temperature at which:
a) growth rate is at an optimum.
b) photosynthesis changes to photorespiration.
c)...
A mycorrhiza is a symbiotic association between a higher plant root and a:
A mycorrhiza is a symbiotic association between a higher plant root and a:
a) Bacterium
b) Virus
c) Fungus
d) Alga
Answer: c) Fung...
Which of the following statements about phloem is NOT correct?
Which of the following statements about phloem is NOT correct?
a) Contains sap that travels from a sugar source to a sugar sink
b) Water movement...
The word 'phyllotaxy' refers to the:
The word 'phyllotaxy' refers to the:
a) air spaces for internal ventilation in leaves.
b) arrangement of leaves on a stem.
c) sloughing off of root...
Collenchyma cells can best be described as:
Collenchyma cells can best be described as:
a) Non-living with thick walls impregnated with lignin
b) Living, roughly round in cross section, with...
A plant that is dioecious can be described as having:
A plant that is dioecious can be described as having:
a) flower parts in multiples of three.
b) flowers with a combination of male and female parts.
c)...
The major transport pathway of sugars and amino acids from shoot to root is the:
The major transport pathway of sugars and amino acids from shoot to root is the:
a) Xylem
b) Cuticle
c) Phloem
d) Petiole
Answer: c) Phlo...
Lucerne (Medicago sativa) is:
Lucerne (Medicago sativa) is:
a) A perennial legume pasture species
b) Drought tolerant due to rhizomes
c) An annual legume pasture species
d) Susceptible...
In a flower, the Carpel (Pistil) consists of a:
In a flower, the Carpel (Pistil) consists of a:
a) Stigma, style, ovary and ovule
b) Anther, stigma, filament and ovary
c) Stigma, filament, style...
In a flower, the stamen consists of a:
In a flower, the stamen consists of a:
a) Stigma and style
b) Anther and stigma
c) Stigma and filament
d) Filament and anther
Answer: d) Filament...
The tissue, cambium, which allows for increased girth of eudicotyledons when they undergo secondary thickening, is located:
The tissue, cambium, which allows for increased girth of eudicotyledons when they undergo secondary thickening, is located:
a) in the vascular bundles...
For a cultivar to be protected by Plant Breeders Rights it needs to undergo the DUS test. DUS means:
For a cultivar to be protected by Plant Breeders Rights it needs to undergo the DUS test. DUS means:
a) Desirable, Uniform, Suitable
b) Distinct,...
The correct order of five taxa used in classification is:
The correct order of five taxa used in classification is:
a) Genus, class, division, family, order
b) Family, genus, division, class, kingdom
c) Kingdom,...
In grasses, the role of the scutellum is to:
In grasses, the role of the scutellum is to:
a) protect the emerging plumule.
b) protect the emerging radical.
c) transfer the energy from the endosperm...
Maize reduces self-fertilisation by:
Maize reduces self-fertilisation by:
a) being monoecious.
b) being dioecious.
c) being self-incompatible.
d) having different stamen and style maturation...
Which of the following is unlikely to occur in a plant which receives additional nitrogen (N) when growing in low N soil?
Which of the following is unlikely to occur in a plant which receives additional nitrogen (N) when growing in low N soil?
a) Nitrogen content of the...
Which of the following is the most important change that occurred as plants became better adapted to dry land?
Which of the following is the most important change that occurred as plants became better adapted to dry land?
a) Gametophyte becomes more dominant
b)...
Transpiration in plants involves all of the following except:
Transpiration in plants involves all of the following except:
a) Adhesion of water molecules to cell walls
b) Cohesion among water molecules
c) Water...
Which one of the following statements is NOT true?
Which one of the following statements is NOT true?
a) Phtosynthesis occurs in chloroplasts
b) DNA replication occurs in vacuoles
c) Protein synthesis...
Which of the following is NOT part of cellular respiration?
Which of the following is NOT part of cellular respiration?
a) Glycolysis
b) The citric acid cycle
c) Oxidative phosphorylation
d) Thylakoid membranes
Answer: d)...
The plant hormone ethylene can be used to
The plant hormone ethylene can be used to
a) increase grass growth.
b) kill broadleaf weeds.
c) prevent reproductive growth.
d) control fruit ripening.
Answer: d)...
The conversion of atmospheric nitrogen to organic nitrogen via ammonium by microorganisms is called
The conversion of atmospheric nitrogen to organic nitrogen via ammonium by microorganisms is called
a) Nitrification
b) Ammonification
c) Nitrogen...
A leaf stalk is called a:
A leaf stalk is called a:
a) Coleoptile
b) Stipule
c) Lamina
d) Petiole
Answer: d) Petio...
Chicory (Cichorium intybus) is a member of which family?
Chicory (Cichorium intybus) is a member of which family?
a) Poaceae
b) Fabaceae
c) Brassicaceae
d) Asteraceae
Answer: d) Asterace...
Which of the following is likely to be the major form of nitrogen taken up by plants in disturbed/cultivated soils?
Which of the following is likely to be the major form of nitrogen taken up by plants in disturbed/cultivated soils?
a) nitrate (NO3-)
b) nitrite (NO2-)
c)...
The function of the coleorhiza is to:
The function of the coleorhiza is to:
a) prevent water entering the stem.
b) transfer nutrients to the embryo.
c) protect the emerging radicle.
d)...
The correct order for terms to describe plant life cycles from the longest to the shortest is:
The correct order for terms to describe plant life cycles from the longest to the shortest is:
a) Perennial, annual, biennial, diurnal
b) Annual,...
What is the primary function of the Calvin cycle?
What is the primary function of the Calvin cycle?
a) Synthesizes sugars from CO2
b) Uses NAHPH to release CO2
c) Splits water and releases O2
d) Synthesizes...
Hybrid cultivar seed:
Hybrid cultivar seed:
a) is the F1 generation of inbred parents.
b) should be stored and grown the next year.
c) is developed by inbreeding.
d) is...
A seed can be characterised as having:
A seed can be characterised as having:
a) a high respiration rate and low water content.
b) a low respiration rate and low water content.
c) a low...
Which of the following essential elements for plant growth would be needed in the least quantity for plant development?
Which of the following essential elements for plant growth would be needed in the least quantity for plant development?
a) Iron
b) Nitrogen
c) Oxygen
d)...
Plant cells have plasmodesmata which:
Plant cells have plasmodesmata which:
a) store various pigments.
b) synthesise proteins on the endoplasmic reticulum.
c) allow cytoplasm to pass through...
The pigment which senses photoperiod by absorbing red light is:
The pigment which senses photoperiod by absorbing red light is:
a) Chlorophyll
b) Ribosome
c) Phytochrome
d) Chromoplast
Answer: c) Phytoc...
Which of the following sequences correctly represent the flow of electrons during the light reactions of photosynthesis?
Which of the following sequences correctly represent the flow of electrons during the light reactions of photosynthesis?
a) NADPH → O2 → CO2
b) H2O...
The function of the coleoptile is to:
The function of the coleoptile is to:
a) prevent water entering the stem.
b) transfer nutrients to the embryo.
c) protect the emerging plumule.
d)...
The proportion of atmospheric gas as CO2 is approximately
The proportion of atmospheric gas as CO2 is approximately
a) 4%
b) 0.4%
c) 0.04%
d) 0.004%
Answer: c) 0.0...
If the maximum temperature was 25°C and the minimum was 15°C, how much thermal time has accumulated for a crop with a base temperature of 8°C?
If the maximum temperature was 25°C and the minimum was 15°C, how much thermal time has accumulated for a crop with a base temperature of 8°C?
a)...
Double fertilisation occurs in:
Double fertilisation occurs in:
a) Conifers
b) Moss and liverworts
c) Ferns and fern allies
d) Flowering plants
Answer: d) Flowering plan...
Alkaloids, like morphine, caffeine, nicotine and cocaine, are heterocyclic
Alkaloids, like morphine, caffeine, nicotine and cocaine, are heterocyclic
A) amines.
B) amides.
C) ethers.
D) esters.
Answer: A) amine...
Organic compounds with rings that contain atoms other than carbon are called
Organic compounds with rings that contain atoms other than carbon are called
A) aromatic compounds.
B) heterocyclic compounds.
C) heterogeneous compounds.
D)...
Which of the following families of organic compounds does NOT contain an oxygen atom?
Which of the following families of organic compounds does NOT contain an oxygen atom?
A) alcohol
B) amine
C) carboxylic acid
D) ketone
Answer: B)...
Amino acids are the "building blocks" of
Amino acids are the "building blocks" of
A) carbohydrates.
B) fats.
C) proteins.
D) vitamins.
Answer: C) protein...
Amino acids are multifunctional compounds that contain
Amino acids are multifunctional compounds that contain
A) carboxyl and amine groups.
B) carboxyl and amide groups.
C) ester and amine groups.
D) aldehyde...
The reaction between a carboxylic acid and an amine yields a(n)
The reaction between a carboxylic acid and an amine yields a(n)
A) aldehyde.
B) amide.
C) ester.
D) ketone.
Answer: B) amid...
Amines are
Amines are
A) acidic.
B) basic.
C) neutral.
D) variable with respect to acid/base behavior.
Answer: B) basi...
When an amine dissolves in water the pH of the solution will be
When an amine dissolves in water the pH of the solution will be
A) < 7.
B) = 7.
C) > 7.
D) More information is needed to predict pH.
Answer: C)...
The compound (CH3)3N is called
The compound (CH3)3N is called
A) methylamine.
B) dimethylamine.
C) trimethylamine.
D) methyl ammonia.
Answer: C) trimethylamin...
The compound CH3NH2 is called
The compound CH3NH2 is called
A) methylamine.
B) dimethylamine.
C) trimethylamine.
D) methyl ammonia.
Answer: A) methylamin...
Amines are derivatives of
Amines are derivatives of
A) ammonia.
B) methane.
C) water.
D) amino acids.
Answer: A) ammoni...
A green chemistry improvement for the synthesis of Zoloft, an antidepressant, was the substitution of ________ for less environmentally-friendly solvents.
A green chemistry improvement for the synthesis of Zoloft, an antidepressant, was the substitution of ________ for less environmentally-friendly solvents.
A)...
Esters are often used as
Esters are often used as
A) anesthetics.
B) disinfectants.
C) fragrances.
D) insecticides.
Answer: C) fragrance...
Many of the flavors isolated from foods are
Many of the flavors isolated from foods are
A) carboxylic acids.
B) esters.
C) alcohols.
D) ketones.
Answer: B) ester...
Vinegar is a solution of ________ in water.
Vinegar is a solution of ________ in water.
A) acetic acid
B) butyric acid
C) formic acid
D) proprionic acid
Answer: A) acetic ac...
The general formula for a carboxylic acid is
The general formula for a carboxylic acid is
A) ROR'.
B) RCOOH.
C) RCOR'.
D) RCOOR'.
Answer: B) RCOO...
The -COOH group represents the
The -COOH group represents the
A) carboxyl group.
B) carbonyl group.
C) alcohol group.
D) aldehyde group.
Answer: A) carboxyl grou...
Aldehydes and ketones share a common functional group. The group is the
Aldehydes and ketones share a common functional group. The group is the
A) hydroxyl group.
B) phenol group.
C) ether group.
D) carbonyl group.
Answer: D)...
The abbreviation ROR' is used to represent the general formula of a(n)
The abbreviation ROR' is used to represent the general formula of a(n)
A) ether.
B) alcohol.
C) ester.
D) phenol.
Answer: A) ethe...
Compounds that have two alkyl groups attached to an oxygen atom are called
Compounds that have two alkyl groups attached to an oxygen atom are called
A) alcohols.
B) phenols.
C) esters.
D) ethers.
Answer: D) ether...
Phenol, sometimes called carbolic acid, was the first
Phenol, sometimes called carbolic acid, was the first
A) anesthetic.
B) antiseptic.
C) insecticide.
D) analgesic.
Answer: B) antisepti...
A phenol has a(n) ________ group attached to a benzene ring.
A phenol has a(n) ________ group attached to a benzene ring.
A) amino
B) carbonyl
C) carboxyl
D) hydroxyl
Answer: D) hydrox...
Phenols are often used as
Phenols are often used as
A) anesthetics.
B) disinfectants.
C) fragrances.
D) insecticides.
Answer: B) disinfectant...
Compounds with a hydroxyl group attached directly to a benzene ring are called
Compounds with a hydroxyl group attached directly to a benzene ring are called
A) alcohols.
B) aromatic hydrocarbons.
C) ethers.
D) phenols.
Answer: D)...
A homologous series of alcohols contains
A homologous series of alcohols contains
A) the same number of carbon atoms, but a different number of hydroxyl groups.
B) the same number of carbon...
Which substance causes fetal alcohol syndrome?
Which substance causes fetal alcohol syndrome?
A) CH3OH
B) CH3CH2OH
C) CH3CHOHCH3
D) CH3OCH3
Answer: B) CH3CH2...
Excessive ingestion of ethanol over a long period may cause which of the following?
Excessive ingestion of ethanol over a long period may cause which of the following?
A) physiological addiction
B) memory loss
C) deterioration of...
The intoxicating alcohol in "alcoholic" beverages is
The intoxicating alcohol in "alcoholic" beverages is
A) ethanol.
B) methanol.
C) propanol.
D) a mixture of the above
Answer: A) ethano...
The formula of methanol is
The formula of methanol is
A) COH.
B) CHOH.
C) CH2OH.
D) CH3OH.
Answer: D) CH3O...
Alcohols are characterized by which functional group?
Alcohols are characterized by which functional group?
A) hydroxyl
B) carboxyl
C) halide
D) ester
Answer: A) hydrox...
The parts of organic molecules that give compounds characteristic chemical and physical properties are known as
The parts of organic molecules that give compounds characteristic chemical and physical properties are known as
A) alkyl groups.
B) aromatic groups.
C)...
In organic chemistry, compounds are generally classified by
In organic chemistry, compounds are generally classified by
A) state.
B) functional group.
C) color.
D) odor.
Answer: B) functional grou...
In representing the general formula of various functional groups, the symbol R stands for
In representing the general formula of various functional groups, the symbol R stands for
A) a halogen atom.
B) a ring.
C) an aromatic group.
D) an...
With respect to reactivity on the surface of the earth, chlorofluorocarbons are
With respect to reactivity on the surface of the earth, chlorofluorocarbons are
A) very reactive.
B) very unreactive.
C) moderately reactive.
D) variable...
In general, CFCs are
In general, CFCs are
A) solids with high melting points.
B) solids with low melting points.
C) liquids with high boiling points.
D) gases or liquids...
Chlorinated hydrocarbons, such as carbon tetrachloride CCl4, make good dry cleaning solvents because
Chlorinated hydrocarbons, such as carbon tetrachloride CCl4, make good dry cleaning solvents because
A) they dissolve in water.
B) they dissolve water...
A molecular formula of an aromatic hydrocarbon is
A molecular formula of an aromatic hydrocarbon is
A) C7H16.
B) C9H18.
C) C5H8.
D) C6H6.
Answer: D) C6H...
Organic compounds that contain a benzene ring or possess certain properties similar to those of benzene are called ________ compounds.
Organic compounds that contain a benzene ring or possess certain properties similar to those of benzene are called ________ compounds.
A) alkaloid
B)...
The correct structure for benzene was proposed by ________ in 1865.
The correct structure for benzene was proposed by ________ in 1865.
A) Boyle
B) Kekule
C) Faraday
D) Curie
Answer: B) Keku...
Benzene is an unsaturated hydrocarbon. An interesting property of benzene is that
Benzene is an unsaturated hydrocarbon. An interesting property of benzene is that
A) it is a liquid at room temperature.
B) it does not undergo the...
The formula of benzene is
The formula of benzene is
A) C2H2.
B) C4H4.
C) C6H6.
D) C6H12.
Answer: C) C6H...
Which of the following is an alkane?
Which of the following is an alkane?
A) propene
B) propyne
C) propane
D) xylene
Answer: C) propa...
Which of the following is an alkyne?
Which of the following is an alkyne?
A) propene
B) propyne
C) propane
D) xylene
Answer: B) propy...
Which of the following is an alkene?
Which of the following is an alkene?
A) propene
B) propyne
C) propane
D) xylene
Answer: A) prope...
A molecular formula of an alkyne is
A molecular formula of an alkyne is
A) C7H16.
B) C9H18.
C) C5H8.
D) C6H6.
Answer: C) C5H...
A molecular formula of an alkene is
A molecular formula of an alkene is
A) C7H16.
B) C9H18.
C) C5H8.
D) C6H6.
Answer: B) C9H1...
Which of the following compounds is saturated?
Which of the following compounds is saturated?
A) butene
B) butane
C) propyne
D) butadiene
Answer: B) buta...
The hydrocarbon that is used in torches along with oxygen to produce very hot flames for cutting and welding is
The hydrocarbon that is used in torches along with oxygen to produce very hot flames for cutting and welding is
A) ethylene.
B) methane.
C) propane.
D)...
The formula for propyne is
The formula for propyne is
A) C3H6.
B) C3H4.
C) C3H8.
D) C3H3.
Answer: B) C3H...
A cyclic hydrocarbon containing seven carbon atoms and two double bonds will have the formula
A cyclic hydrocarbon containing seven carbon atoms and two double bonds will have the formula
A) C7H16.
B) C7H14.
C) C7H12.
D) C7H10.
Answer: D)...
A cyclic hydrocarbon containing six carbon atoms and one double bond will have the formula
A cyclic hydrocarbon containing six carbon atoms and one double bond will have the formula
A) C6H16.
B) C6H14.
C) C6H12.
D) C6H10.
Answer: D)...
The most important commercial organic compound is
The most important commercial organic compound is
A) methane, CH4.
B) ethane, CH3CH3.
C) ethylene, CH2CH2.
D) propane, CH3CH2CH3.
Answer: C)...
Which of the following compounds is a homolog of CH2=CH2?
Which of the following compounds is a homolog of CH2=CH2?
A) CH3CH3
B) CH3CH2CH3
C) CH3CH=CH2
D) CH3CCH
Answer: C) CH3CH=C...
Propane, benzene, acetylene, and 2-butene are all examples of
Propane, benzene, acetylene, and 2-butene are all examples of
A) alkenes.
B) alkanes.
C) aromatic compounds.
D) hydrocarbons.
Answer: D) h...
What is the general formula for a cycloalkane?
What is the general formula for a cycloalkane?
A) CnHn
B) CnH2n+2
C) CnH2n-2
D) CnH2n
Answer: D) CnH...
The chemical formula of cyclopentane is
The chemical formula of cyclopentane is
A) C5H6.
B) C5H8.
C) C5H10.
D) C5H12.
Answer: C) C5H1...
The chemical formula of cyclohexane is
The chemical formula of cyclohexane is
A) C6H6.
B) C6H8.
C) C6H10.
D) C6H12.
Answer: D) C6H1...
The chemical formula of cyclopropane is
The chemical formula of cyclopropane is
A) C3H3.
B) C3H6.
C) C3H7.
D) C3H8.
Answer: B) C3H...
All of the following are properties of hydrocarbons EXCEPT
All of the following are properties of hydrocarbons EXCEPT
A) they have a higher density than water.
B) their boiling points increase as the number...
A molecular formula of an alkane is
A molecular formula of an alkane is
A) C7H16.
B) C6H12.
C) C5H10.
D) C4H8.
Answer: A) C7H1...
Which of the following alkanes will have the lowest boiling point?
Which of the following alkanes will have the lowest boiling point?
A) CH4
B) C6H14
C) C16H34
D) C19H40
Answer: A) C...
Which of the following alkanes will have the highest boiling point?
Which of the following alkanes will have the highest boiling point?
A) CH4
B) C6H14
C) C16H34
D) C19H40
Answer: D) C19H...
Which of the following is NOT a property of alkanes?
Which of the following is NOT a property of alkanes?
A) Alkanes are not soluble in water.
B) Alkanes have a lower density than water does.
C) Alkanes...
Which one of the following statements is NOT true of all alkanes?
Which one of the following statements is NOT true of all alkanes?
A) All alkanes burn to produce carbon dioxide and water.
B) All alkanes consist...
The formula for cyclopropane is
The formula for cyclopropane is
A) C3H8.
B) C7H16.
C) C3H6.
D) C7H12.
Answer: C) C3H...
The formula for hexene is
The formula for hexene is
A) C6H12.
B) C7H16.
C) C3H8.
D) C6H12.
Answer: C) C3H...
The formula for butane is
The formula for butane is
A) C4H10.
B) C5H12.
C) C6H14.
D) C4H8.
Answer: A) C4H1...
The compounds CH3CH3 and CH3CH2CH3 are
The compounds CH3CH3 and CH3CH2CH3 are
A) isomers.
B) allotropes.
C) isotopes.
D) homologs.
Answer: D) homolog...
Compounds with the same number and kinds of atoms but with different structures are known as
Compounds with the same number and kinds of atoms but with different structures are known as
A) homologs.
B) isotopes.
C) isomers.
D) allotropes.
Answer: C)...
Alkanes are often called
Alkanes are often called
A) unsaturated hydrocarbons.
B) saturated hydrocarbons.
C) carbohydrates.
D) saturated fats.
Answer: B) saturated...
Which of the following is NOT a reason for the great variety of organic molecules?
Which of the following is NOT a reason for the great variety of organic molecules?
A) The ability of carbon to form chains
B) Carbon atoms can form...
How many different structural isomers are there for a hydrocarbon with the formula C6H14?
How many different structural isomers are there for a hydrocarbon with the formula C6H14?
A) 1
B) 2
C) 3
D) > 4
Answer: D) >...
How many different structural isomers are there for a hydrocarbon with the formula C5H12?
How many different structural isomers are there for a hydrocarbon with the formula C5H12?
A) 1
B) 2
C) 3
D) 4
Answer: C)...
How many different structural isomers are there for a hydrocarbon with the formula C4H10 ?
How many different structural isomers are there for a hydrocarbon with the formula C4H10 ?
A) 1
B) 2
C) 3
D) 4
Answer:...
What is the name of the compound that has the formula CH3CH3?
What is the name of the compound that has the formula CH3CH3?
A) methane
B) ethane
C) propane
D) butane
Answer: B) etha...
Which of the following alkanes contains two carbons?
Which of the following alkanes contains two carbons?
A) ethene
B) ethane
C) methane
D) methyne
Answer: B) etha...
A compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an
A compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an
A) alkane.
B) alkene.
C) aromatic...
A compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an
A compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an
A) alkane.
B) alkene.
C) alkyne.
D)...
What is the name of the compound with a formula CH3CH2CH3?
What is the name of the compound with a formula CH3CH2CH3?
A) methane
B) ethane
C) propane
D) butane
Answer: C) propa...
Petroleum jelly is
Petroleum jelly is
A) a mixture of low carbon number hydrocarbons.
B) a mixture of moderate carbon number hydrocarbons.
C) a mixture of higher carbon...
The simplest alkane is
The simplest alkane is
A) monane.
B) ethane.
C) methane.
D) propane.
Answer: C) methan...
The unique aspect of a saturated hydrocarbon is that it must contain
The unique aspect of a saturated hydrocarbon is that it must contain
A) only carbon and hydrogen.
B) only single bonds.
C) single and double bonds.
D)...
Carbon is almost always
Carbon is almost always
A) monovalent.
B) divalent.
C) trivalent.
D) tetravalent.
Answer: D) tetravalen...
The element whose atoms have a unique ability to bond to each other and to other kinds of atoms is ________.
The element whose atoms have a unique ability to bond to each other and to other kinds of atoms is ________.
A) sodium
B) carbon
C) sulfur
D) nitrogen
Answer: B)...
An organic compound is best defined as
An organic compound is best defined as
A) a compound containing carbon.
B) a compound of carbon and hydrogen.
C) a compound produced by a living organism.
D)...
The most unique property of carbon is its ability to
The most unique property of carbon is its ability to
A) form four bonds.
B) bond to oxygen.
C) bond to nitrogen.
D) bond to carbon.
Answer: D)...
Approximately what percentage of known compounds are classified as organic compounds?
Approximately what percentage of known compounds are classified as organic compounds?
A) ≈ 95%
B) ≈ 70%
C) ≈ 40%
D) ≈ 20%
Answer: A) ≈ 9...
Organic chemistry is most broadly defined as
Organic chemistry is most broadly defined as
A) the chemistry of living systems.
B) the chemistry of substances produced by living systems.
C) the...
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