Chapter 4 Flashcards

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1
Q
  1. What is an organic compound?
A

a. A molecule that contains carbon, hydrogen, and usually oxygen.

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2
Q
  1. What are the 4 major building blocks (also called macromolecules) of life?
A

a. Carbohydrates, protiens, lipids, nucleic acids.

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3
Q
  1. A carbohydrate is another name for __________.
A

Sugar

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4
Q
  1. What are the 2 major functions of carbohydrates?
A

a. Used to make energy in an organism, some store energy for later, or structural molecules for building structures.

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5
Q
  1. What is chitin?
A

a. Found in shells of some animals like crabs and lobsters main component of the skeleton

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6
Q
  1. Proteins are made of ________.
A

Amino Acids

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7
Q
  1. Name 4 functions of proteins.
A

a. Enzymes- are specialized proteins speed up and essential in chemical reactions
b. Hormones- act as chemical messengers within an organism
c. Structural- molecules like in muscles
d. Antibodies- for protection from disease

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8
Q
  1. What is an enzyme?
A

a. A protein that speeds up specific chemical reactions

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9
Q
  1. Lipids are ____, ______, and _______.
A

fats, oils, and waxes

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10
Q
  1. Can water dissolve (or mix with) lipids?
A

No

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11
Q
  1. What are some useful functions of lipids for marine organisms?
A

a. Lipids are used as a coating to cover outer surfaces, fur, or feathers, acts as an insulin layer. Helps either keep water off so they stay dry or help keep from drying out.

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12
Q
  1. What are nucleic acids?
A

a. They are DNA and RNA, made of small nucleotides

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13
Q
  1. What is the function of DNA? RNA?
A

a. DNA is molecule of heredity, provides instructions for making proteins
b. RNA gets the message from the genes in DNA and uses them to make proteins

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