Chapter 4 - Carbom And Diversity Of Life Flashcards

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0
Q

Is carbon dioxide an organic molecule?

A

No because lacks hydrogen.

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1
Q

What determines the function of a molecule?

A

It’s shape.

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2
Q

What determines the kind and number of bonds that an atom can form? Why is this important?

A

Electron configuration or valence electrons determine how many bonds can form and what arrangement. This is important in molecular shape.

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3
Q

What is vitalism?

A

The theory that life processes arise from or contain a nonmaterial vital principle that cannot be entirely explained as a physical and chemical phenomena.
It was believes that only living organisms could produce organic compounds.

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4
Q

What is abiotic synthesis?

A

Organic compounds were synthesized from inorganic compounds without the use of biological agents such as enzymes or Nucleic acids.

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5
Q

What is mechanism?

A

Belief that all natural phenomena are governed by physical an chemical laws.

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6
Q

What shifted the mainstream biological thought of vitalism to mechanism?

A

Pioneers of organic chemistry began to synthesize organic compounds from inorganic molecules.

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7
Q

What can you deduce given the chemical formula for glucose?

A

Molecular mass and solubility in water.

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8
Q

What is the diversity of carbon compounds related to?

A

1) 4 valence electrons and does not tend to form ionic bonds. Tend to form covalent bonds with tetra valence and make it a good junction molecule.
2) carbon compounds may contain one or more carbon atoms. The atoms bonded to atoms may vary.
3) carbon atoms can form a variety of skeletons.

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9
Q

What is an isomer?

A

Same molecular formula but different structure.

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10
Q

What are the types of isomers?

A

Structural, Cis-trans or geometric, and enantiomers.

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11
Q

What are some properties of hydrocarbons?

A

Organic molecules consisting of only C and H.

Form non polar bonds that tend not to be very soluble in water. Ex. Role of hydrocarbons in fats.

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12
Q

What is a structural isomer?

A

Differ in covalent arrangement of their atoms and location of double bonds.
Same formula, different skeleton.

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13
Q

What is a Cis-trans isomer?

A

Same arrangement of covalent bonds but differ in spatial arrangement due to inflexibility of double bonds.

Double bonds fix carbons together.

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14
Q

What is an enantiomers?

A

Isomers that are mirror images of each other and differ in shape due to presence of an asymmetric carbon that is attached to 4 different atoms.

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15
Q

Explain how the variation of chemical groups is important.

A

Variation in chemical groups attached to the carbon skeleton. Groups contribute differences in molecular shape and characteristic chemical reactivity.
Ex. Male and female sex hormones

16
Q

What is a functional group?

A

A group of atoms within a molecule that is responsible for certain properties of the molecule and reactions in which the molecule takes part.

17
Q

Why are all of the 6 functional groups hydrophilic except for sulfhydryl?

A

Not ionized, non-polar covalent compounds.

18
Q

Review chemical groups and properties.

A

Pg 71

19
Q

Which functional group behaves as a base?

A

Amino. Picks up protons.

20
Q

What functional group plays a major role in energy transfer?

A

Phosphate.

21
Q

What functional group behaves as an acid?

A

Carboxyl.