Chapter 1

Question 1

What characteristics are shared by living organisms?

Answer 1

organization, acquire materials and energy, homeostasis, respond to stimuli, reproduction; growth & development, evolution and adaption

Question 2

levels of organization

Answer 2

atom, molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere

Question 3

metabolism

Answer 3

all the chemical reactions that occur in a living organism

Question 4

what chemical reactions are included in metabolism

Answer 4

manufacture of molecules, breakdown of molecules, signal sensing and response, movement, ingestion and excretion of materials

Question 5

what is almost always the ultimate source of biological energy

Answer 5

photosynthesis

Question 6

homeostasis

Answer 6

maintenance of a constant internal environment when the outside is constantly changing

Question 7

what are the responses to stimuli

Answer 7

detection, processing, movement or other response

Question 8

reproduction

Answer 8

creation of new organism

Question 9

what are the two types of reproduction & how do they differ

Answer 9

sexual- changing of genetic material

asexual- no change of genetic material

Question 10

growth

Answer 10

change in size of organism

Question 11

how can an organism grow

Answer 11

increase the number of cells, or increase the size of cells

Question 12

development

Answer 12

all changes over life of organism

Question 13

what is included in development

Answer 13

growth, cell types, gain & loss of characteristics, repairs and maintenance

Question 14

evolution

Answer 14

any change in genetic makeup of a group over time

Question 15

adaption

Answer 15

a genetic change that leaves a group better matched to the environment

Question 16

true or false: all genetic changes are adaptive

Answer 16

false

Question 17

acclimation

Answer 17

temporary changes

Question 18

what domain, kingdom, phylum, and class do humans belong to

Answer 18

domain: eukarya
kingdom: animalia
phylum: chordata
class: mammalia

Question 19

science (4 facts)

Answer 19

1. a way of knowing about the natural world
2. a direct observation and experience
3. should be objective
4. conclusions may change or be modified as our understanding and technology increase

Question 20

hypothesis

Answer 20

testable explanation of a question generated by observations

Question 21

experiments

Answer 21

specific tests of hypotheses

Question 22

theories

Answer 22

well supported explanations

Question 23

logic is used to generate

Answer 23

expectations

Question 24

in human experiments, blinds help eliminate

Answer 24

bias in observations