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Section 2–3 Carbon Compounds. This section explains how the element carbon able to form millions of carbon, or organic, compounds. It describes the four groups of organic compounds found in living things. The Chemistry of Carbon . How many valence electrons does each carbon atom have?.

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section 2 3 carbon compounds

Section 2–3 Carbon Compounds

This section explains how the element carbon able to form millions of carbon, or organic, compounds.

It describes the four groups of organiccompounds found in living things.

how many valence electrons does each carbon atom have
How many valence electrons does each carbon atom have?

Each carbon atom has four electrons.

what gives carbon the ability to form chains that are almost unlimited in length
What gives carbon the ability to form chains that are almost unlimited in length?

A carbon atom can bond to other carbon atoms.

what are four groups of organic compounds found in living things
What are four groups of organic compounds found in living things?

Carbohydrates

Proteins

Lipids

Nucleic Acids

Carbohydrates

Proteins

Lipids

Nucleic Acids

what atoms make up carbohydrates
What atoms make up carbohydrates?

Carbon, hydrogen, and oxygen atoms make up carbohydrates.

circle the letter of each sentence that is true about carbohydrates
Circle the letter of each sentence that is true about carbohydrates.
  • Starches and sugars are examples of carbohydrates.
  • Living things use them as their main source of energy.
  • The monomers in sugar polymers are starch molecules.
  • Plants and some animals use them for strength and rigidity.
11 what are polysaccharides
11. What are polysaccharides?

They are large macromolecules formed from monosaccharides.

12 how do plants and animals store excess sugar
12. How do plants and animals store excess sugar?
  • Plants use a polysaccharide called plantstarch, whereas animals use a polysaccharide called glycogen.
lipids
Lipids

What kinds of atoms are lipids mostly made of?

They are made mostly of carbon andhydrogen atoms.

16 circle the letter of each way that fats are used in living things
16. Circle the letter of each way that fats are used in living things.
  • As parts of biological membranes

b. To store energy

c. To give plants rigidity

d. As chemical messengers

18 nucleic acids contain what kinds of atoms
18. Nucleic acids contain what kinds of atoms?

They contain hydrogen, oxygen, nitrogen, carbon, and phosphorus atoms.

20 a nucleotide consists of what three parts
20. A nucleotide consists of what three parts?

It consists of a nitrogenous base, a phosphate group, and a 5-carbon sugar.

21 what is the function of nucleic acids in living things
21. What is the function of nucleic acids in living things?

Nucleic acids store and transmithereditary, or genetic, information.

saturated
Saturated

Each carbon atom in a lipid’s fatty acid chain is joined to another carbon atom by a single bond.

unsaturated
Unsaturated

There is at least one carbon-carbon double bond in a fatty acid.

polyunsaturated
Polyunsaturated

A lipid’s fatty acids contain more than one double bond.

22 what are two kinds of nucleic acids
22. What are two kinds of nucleic acids?
  • Deoxyribonucleic acid (DNA)
  • Ribonucleic acid (RNA)

DNA

RNA

23 proteins contain what kinds of atoms
23. Proteins contain what kinds of atoms?

They contain nitrogen, carbon, hydrogen, and oxygen atoms.

25 what are four roles that proteins play in living things
25. What are four roles that proteins play in living things?
  • Some control the rate of reactions and regulate cell processes.
  • Some are used to form bones and muscles.
  • Some transport substances into or out of cells.
  • Some help to fight diseases.