lec 3

Question 1

organic

Answer 1

compounds that contain carbon

Question 2

Organic molecules

Answer 2

1. Carbohydrates
2. Proteins
3. Nucleic acids
4. Lipids

Question 3

carbohydrates’ composition

Answer 3

Composed of carbon, hydrogen, and oxygen atoms, which usually occur the ratio 1C:2H:1O

Question 4

classes of carbohydrates

Answer 4

monosaccharides
disaccharides
polysaccharides

Question 5

examples of those classes

Answer 5

mono: glucose, fructose, and galactose
di: maltose, sucrose, and lactose
poly: chitin and glycogen

Question 6

monosaccharides

Answer 6

Monomer subunits or building block of molecules

Question 7

disaccharides

Answer 7

When two monosaccharides
join together

Question 8

polysaccharides

Answer 8

When three or more monosaccharides join in a long chain

Question 9

lipids’ key function

Answer 9

1. Providing energy
2. Making up cell membranes
3. Acting as hormones

Question 10

lipids’ groups

Answer 10

1. Triglycerides (“true” fats)
2. Phospholipids
3. Steroids

Question 11

amino acids

Answer 11

building blocks of proteins

Question 12

structure of proteins

Answer 12

1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure

Question 13

nucleic acids

Answer 13

● Information-storage molecules of the cell
● Involved in the storage and transmission of genetic information

Question 14

components of dna and rna

Answer 14

1. nitrogenous bases
2. pentose sugar
3. phosphate group

Question 15

purines

Answer 15

adenine and guanine

Question 16

pyrimidines

Answer 16

thymine, cytosine, and uracil