8th Grade Vocab Pt. 2

Question 1

a combination of substances that can be physically separated from one another

Accepted Answer

Mixture

Question 2

internal genetic coding passed on from one generation to the next

Accepted Answer

Genotype

Question 3

found in the nucleus of a cell, a long nucleic acid molecule containing the genetic instructions for development

Accepted Answer

DNA

Question 4

having different pairs of genes for any given pair of hereditary characteristics

Accepted Answer

Heterozygous

Question 5

the process by which the characteristics of a species change over many generations in response to the environment

Accepted Answer

Adaptation

Question 6

the process in which plants and some other organisms use the energy in sunlight to make food

Accepted Answer

Photosynthesis

Question 7

any substance with a pH less than 7; acids turn blue litmus paper red

Accepted Answer

Acid

Question 8

a prediction based on background knowledge saying what is expected to happen in an experiment

Accepted Answer

Hypothesis

Question 9

all the living and nonliving things that surround an organism

Accepted Answer

Environment

Question 10

the theory stating that natural variation among organisms that make them best adapted to their environment

Accepted Answer

Natural Selection

Question 11

a set of statements or principles devised to explain a group of facts or phenomena

Accepted Answer

Theory

Question 12

A theory that the various types of animals and plants have their origin in other preexisting types

Accepted Answer

Evolution

Question 13

a substance with a pH greater than 7; will increase the concentration of hydroxide ions in solution

Accepted Answer

Base

Question 14

the activity of classification

Accepted Answer

Taxonomy

Question 15

a subatomic particle with a positive charge that is located in the nucleus of an atom

Accepted Answer

Proton

Question 16

two or more atoms joined together

Accepted Answer

Molecule

Question 17

the center of an atom containing protons and neutrons; region in a cell surrounded by a membrane with genetic material

Accepted Answer

Nucleus

Question 18

a genetic trait that lacks the ability to manifest itself when a dominant gene is present

Accepted Answer

Recessive

Question 19

a series of steps used to figure out the effects of a certain factor on another factor; one way of testing a hypothesis

Accepted Answer

Experiment

Question 20

a genetic trait passed from parent to child that is more likely to be expressed

Accepted Answer

Dominant

Question 21

to act because of something that happened (chemical change)

Accepted Answer

Reaction

Question 22

an illness caused by abnormalities in genes or chromosomes

Accepted Answer

Genetic Disorder

Question 23

a subatomic particle with a negative charge

Accepted Answer

Electron

Question 24

a plan of inquiry that uses science process skills as tools to gather, organize, analyze, and communicate information

Accepted Answer

Scientific Method

Question 25

electrically-charged particle (positive or negative)

Accepted Answer

Ion

Question 26

having identical pairs of genes for any given pair of hereditary characteristics

Accepted Answer

Homozygous

Question 27

the basic unit of heredity in a living organism; a segment of DNA or RNA

Accepted Answer

Genes

Question 28

a mixture in which a solid and a liquid or two liquids are mixed so evenly, that separate particles aren't seen

Accepted Answer

Solution

Question 29

a subatomic particle with no electric charge, located within the nucleus of the atom

Accepted Answer

Neutron

8th Grade Vocab Pt. 2

Questions 29

8th Grade Vocab Pt. 2

Questions 29