Molecules of Biology Flashcards Preview

BIOLOGY SUBJECT TEST > Molecules of Biology > Flashcards

Flashcards in Molecules of Biology Deck (26):
1

Polymer

Strings of repeated units.

2

Monomer

The individual units of polymers.

3

Monomer of Protein

Amino Acids

4

A protein is also called a __________

Polypeptide

5

Dehydration Synthesis

How peptide bonds are linked, a molecule of water is removed.

6

Hydrolysis

How peptide bonds are broken, a water molecule is added.

7

Monomer of Carbohydrates.

Saccharides

8

What are carbohydrates made of?

Made only of carbon, hydrogen and oxygen.

9

Monosaccharides

What is the ratio between the carbon, hydrogen and oxygen?

- glucose
- fructose

Both are C6 H12 O6

10

Disaccharides

What is the ratio between the carbon, hydrogen and oxygen molecules?

- maltose
- sucrose

Both are C12 H22 O11 (made through dehydration)

glucose + glucose - water = maltose
glucose + fructose - water = sucrose

11

Polysaccharides

- glycogen
- starch
- cellulose

All polymers of glucose, only different in the way glucose molecules are linked.

12

Form in which animals store glucose

Glycogen

13

Form in which plants store glucose.

Starch

14

Cellulose

Forms the plant's cell walls (strong and rigid)

15

Monomer of lipids.

Hydrocarbon

16

Hydrophobic is also known as _________

Non polar

17

Thee types of lipids

- triglycerides
- phospholipids
- cholesterol

18

Triglycerides Structure

Three fatty acids (a long hydrocarbon chain with a carbonyl group) bonded to a glycerol molecules.

19

Phospholipids Structure

Two fatty acids (a long hydrocarbon chain with a carboxyl group) and one phosphate group bonded to a glycerol molecule.

20

Lipid Bilayers form what

Cell Membranes

21

Cholesterol Structure

Hydrocarbons form rings found in animal cells and cell membranes

22

Steroid hormones in body are derived from what?

Cholesterol

23

Monomer of Nucleic Acid

Nucleotide

24

A string is nucleotides is what?

DNA

25

Nucleotide Base Pairings

A < > T (held by two hydrogen bonds)
C < > G (held by three hydrogen bonds)

26

RNA Base Pairings

A < > U
C < > G