Unit 1A- Biomolecules, Cells Flashcards Preview

PreAP Biology-Walters > Unit 1A- Biomolecules, Cells > Flashcards

Flashcards in Unit 1A- Biomolecules, Cells Deck (48)
Loading flashcards...
1

Homeostasis

Internal stable environment

2

pH scale

System of measurement that measure the concentration of H+

3

Proton

Positive charged particle in an atom, found in the nucleus

4

Carbohydrate

ex. is a sugar; Made up of C, H, and O with the H and O in a 2:1 ratio; made up of monosaccharides

5

Acid

compound that releases H+; 0-6 on a pH scale

6

Lipid

example is a fat, oil, wax; made up of C,H, and O with the H O being in a much greater ratio than 2:1 ; made up of fatty acids and a glycerol molecule

7

Nucleic Acid

example is DNA/RNA; made up of C,H,O,N, P; large complex molecule made up of a sugar, phosphate, and a nitrogen base

8

Protein

made up of amino acids; C,H,O,N; examples is muscle, enzymes

9

Solvent

Substance that dissolves another

10

Independent Variable

Variable that is intentionally changed or manipulated in an experiment

11

Dependent Variable

Variable in an experiment that is observed or responds to the change

12

Monosaccharide

Single sugar molecule; monomer of a carbohydrate

13

Disaccharide

Double sugar molecule

14

Base

AKA alkaline; compound that releases OH- ; 8-14 on the pH scale

15

Neutral

OH- and H+ ions are equal; 7 on the pH scale

16

Neutron

particle in the nucleus of an atom that does not have a charge

17

Spontaneous Generation

example- flies come from meat; living things come from nonliving things; disproved partly by Redi & and totally by Pasteur

18

Biogenesis

living things come from other living things

19

Enzyme

a protein that acts as a catalyst to speed up a reaction by lowering the activation energy

20

Polysaccharide

many sugared molecule

21

Solution

Mixture of 2 or more substances in which they are evenly distributed

22

Theory

Based on scientific fact but hasn't been proven

23

Ribonucleic Acid

RNA; contains ribose sugar

24

Deoxyribonucleic Acid

DNA; contains deoxyribose sugar

25

Electron

Negatively charged particle located outside of the nucleus of an atom

26

Ion

Atom that gains or loses electrons

27

Covalent Bond

Process by which atoms combine by sharing electrons

28

Ionic Bond

Process by which atoms combine by transferring electrons

29

Atom

Basic unit of matter

30

Metabolism

All of the chemical reactions that take place in the body