Chapter 1

Question 1

use of one or more of the senses- sight, hearing, touch, smell, and sometimes taste to gather information

Answer 1

observation

Question 2

evidence - information gathered from observations

Answer 2

data

Question 3

well - tested explanations that unifies a broad range of observations

Answer 3

theory

Question 4

device that produces magnified images of structures that are too small to the human eye

Answer 4

microscope

Question 5

possible explanation for a set of observations or possible answer to a scientific question

Answer 5

hypothesis

Question 6

hypothesis stating that life could arise from non living matter

Answer 6

spontaneous generation

Question 7

factor in an experiment that changes - independent variable

Answer 7

manipulated variable

Question 8

collection of living matter enclosed by a barrier that separates the cell form its surroundings - basic unit of all forms of life

Answer 8

cell

Question 9

factor in an experiment that a scientists wants to observe, may change in response to the manipulated variable - dependent variable

Answer 9

responding variable

Question 10

test of the effect of a single variable changing it while keeping all other variables the same

Answer 10

controlled experiment

Question 11

science that seeks to understand the living world

Answer 11

biology

Question 12

microscope that allows light to pass through a specimen and uses two lenses to form an image

Answer 12

compound light microscope

Question 13

set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes

Answer 13

metabolism

Question 14

group of cells grown in a nutrient solution from a single original cell

Answer 14

cell culture

Question 15

what are the goals of science

Answer 15

to investigate and understand the natural world, to explain events in the natural world, and to use those explanations to make useful predictions

Question 16

what is the difference between observation and inference?

Answer 16

inference - logical interpretation based on prior knowledge. you can infer this
observation - is something you can see going on

Question 17

how is a hypothesis different than a theory?

Answer 17

a hypothesis is a guess

a theory is a well- supported hypothesis

Question 18

why is it important for scientists to share their work?

Answer 18

so other scientists can base their things off it, and so they will have something to go by

Question 19

7 characteristics of all living things

Answer 19

living things are mad up o units called cells.
living things reproduce.
living things are based on a universal genetic code.
living things grow and develop.
living things obtain and use materials and energy.
living things respond to their environment.
living things maintain a stable internal environment.
taken as a group, living things change over time.

Question 20

organized way of using evidence to learn about the natural world, body of knowledge

Answer 20

science

Question 21

why do scientists only change one variable at a time

Answer 21

so they can determine whats causing the change

Question 22

how to find the atomic number

Answer 22

you subtract the atomic number from the atomic mass