Vocab

Question 0

Theory

Answer 0

Ideas that have been supported over time

Question 1

Hypothesis

Answer 1

The proposed scientific explanation

Question 2

Dependent variable

Answer 2

Observed factor that may change in response to the other variable. (Outcome)

Question 3

Independent variable

Answer 3

The factor that is purposely changed.

Question 4

Control group

Answer 4

A group of subjects, closely resembling the experimental group but not receiving the factor under study, which serves as a comparison to the experimental group.

Question 5

Experimental group

Answer 5

A group of subjects which receive the factor under study

Question 6

Cell

Answer 6

The smallest unit of an organism that is considered alive

Question 7

Stimulus

Answer 7

Any physical or chemical input that is sensed

Question 8

Homeostasis

Answer 8

The process by which organisms keep their internal body conditions fairly constant to survive

Question 9

Evolution

Answer 9

A change in kind of organism over time

Question 10

Atom

Answer 10

The basic unit of matter

Question 11

Proton

Answer 11

The positively charged particle found in the nucleus of an atom

Question 12

Neutron

Answer 12

The particle with no charge found in the nucleus

Question 13

Electron

Answer 13

Negatively charged particle found outside the nucleus of an atom

Question 14

Element

Answer 14

A pure substance that consists entirely of one type of atom

Question 15

Molecule

Answer 15

A group of atoms

Question 16

Isotopes

Answer 16

Atoms of the same element

Question 17

Chemical bonding

Answer 17

An attraction between two or more atoms resulting in the formation of different

Question 18

Molecule

Answer 18

A group of atoms

Question 19

Isotopes

Answer 19

Atoms of the same element

Question 20

Chemical bonding

Answer 20

An attraction between two or more atoms resulting in the formation of different

Question 21

Chemical reaction

Answer 21

Changes in chemical substances involving bond breaking and/or bond forming in different chemical substances

Question 22

Ion

Answer 22

A positively or negatively charged atom

Question 23

Ionic bond

Answer 23

Formed when one or more electrons ate transferred from one atom to another

Question 24

Covalent bond

Answer 24

Forms when electrons are shared between atoms

Question 25

Valence electrons

Answer 25

The electrons in the outer shell or energy level that are available for bonding

Question 26

Deoxyribonucleic acid

Answer 26

The nucleic acid that contains all genetic information for a cell

Question 27

Double helix

Answer 27

The shape of DNA that resembles a spiral staircase or a twisted ladder

Question 28

Nucleic acid

Answer 28

The building block of living organisms that passes genetic information from one generation to the next

Question 29

Nucleotide

Answer 29

A monomer of nucleic acid; consisting of sugar, phosphate,and a nitrogen base

Question 30

Carbohydrate

Answer 30

He molecule that is the major source of energy for an organism

Question 31

Glucose

Answer 31

The monomer of carbohydrates. (Sugar)

Question 32

Protein

Answer 32

The molecule needed by organisms for growth and repair

Question 33

Amino acid

Answer 33

The monomer of protein

Question 34

Enzyme

Answer 34

A protein that speeds up biological reactions

Question 35

Metabolism

Answer 35

A set of chemical reactions in the cells of living organisms to sustain life

Question 36

Lipid

Answer 36

The molecule that stores energy and is the main structure of cell membranes

Question 37

Solute

Answer 37

The substance that is dissolved in a solution

Question 38

Solvent

Answer 38

The substance in which the solute dissolves in a solution