Unit 1 Topic 1- The Science of Life

Question 1

the ___is the basic unit of life?

Answer 1

cell

Question 2

unicellular?

Answer 2

organisms that are composed of only 1 cell

Question 3

Multicellular?

Answer 3

organisms composed of more than 1 cell

Question 4

What do cells contain tha carry out the cells life processes?

Answer 4

specialized structures called organells

Question 5

what are all living things composed of?

Answer 5

cells

Question 6

Multiellular: begin as___cell, contain___cells and___kinds of cells?

Answer 6

• 1
• many
• different

Question 7

In multicellular organisms, cellsdifferentiate to become what that then becomes a what?

Answer 7

• specific tissue

- organism

Question 8

What is homeostasis?

Answer 8

stable level of internal conditions

Question 9

Do all living things need homestasis?

Answer 9

yes

Question 10

Do all organisms reproduce?

Answer 10

yes

Question 11

Reproduction is just the ___of__info to their offspring?

Answer 11

transmission

hereditary

Question 12

What form does the transmission of hereditary information take in reproduction?

Answer 12

DNA or DNA like structure

Question 13

In sexual reproduction info from how many organisms is passed down to offspring?

Answer 13

2

Question 14

In a-sexual reproduction info from hw many organisms is passed down?

Answer 14

1

Question 15

What is natural selection?

Answer 15

the theory that organisms that have certain favourable traits are better able to reproduce than organisms that lack these traits.

Question 16

what is the most important driving force in evolution?

Answer 16

natural selection

Question 17

Evolution by natural selection is driven in part by the____necessary for survival?

Answer 17

competition

Question 18

Are all individuals able to reproduce to the same degree?

Answer 18

no

Question 19

Do individual that have traits that give them advantages for survival and reproduction tend to pass these traits down?

Answer 19

yes

Question 20

What is responsible for the multitude of life forms we see today?

Answer 20

descent with modification

Question 21

What is ecology?

Answer 21

study of the relationships between organisms and environment

Question 22

Have humans had a small effect on environments all over the world?

Answer 22

no, we have had a large on

Question 23

How have humans destroyed the rainforest?

Answer 23

by cutting down the vegetation

Question 24

Living things have highly organized structures that must be maintain in their orderly state by a constant supply of…?

Answer 24

energy

Question 25

What is photosynthesis?

Answer 25

plants and some unicellular ogranisms use this process to capture energy from the sun and convert it into a useable form (sugar)

Question 26

How do autotrophs obtain their energy?

Answer 26

by making their own food

Question 27

What are heterotrophs?

Answer 27

organisms that must take in food to meet their energy needs

Question 28

What are the six unifying themes of biology?

Answer 28

1) cell structure and function 2) stability and homeostasis 3) reproduction and ingeritance 4) evolution 5) interdependence of organisms 6) matter, energy, and organization

Question 29

How do organisms produce offspring exactly like themselves? What kindof reproduction is it?

Answer 29

a-sexual reproduction

Question 30

What are the two driving forces behind natural selection?

Answer 30

*competition* for resources and individuals that have *traits* best suited to obtian those resources and thus survive to reproduce

Question 31

What are the characteristics of life? Hint: there are six.

Answer 31

1) cells 2) organization 3) energy use 4) homeostasis 5) growth 6) reproduction

Question 32

Are multicellular organisms specialized to play a specifc or nospecific role?

Answer 32

specific

Question 33

What organisms contain many cells?

Answer 33

large multicellular organisms as opposed to smaller organisms which contain fewer celles

Question 34

What two levels are living things composed at?

Answer 34

molecular and cellular

Question 35

What do living things take in and organize in complex ways?

Answer 35

substances from environment

Question 36

Cells: specific cell___carry out particular___

Answer 36

structures | functions

Question 37

What do organisms require to maintain molecular and cellular organization as well as to grow and reproduce?

Answer 37

energy

Question 38

What is metabolism?

Answer 38

sum of all chemical processes that occur in and organism and all living things use energy in this process

Question 39

In most multicellular organisms cells and groups of cells are organized by their what?

Answer 39

function

Question 40

How does a cell control its water content?

Answer 40

by taking in or releasing water; if it takes in too much it will rupture and die

Question 41

Do multicellular organisms usually have more than one system for maintaining important aspects of their internal environment?

Answer 41

yes

Question 42

How do non-living things grow?

Answer 42

They grow by accumulating more of the material that they are made of?

Question 43

How do living things grow?

Answer 43

They grow as a result of cell division and cell enlargement

Question 44

What are unicellular organisms as in what do they result in?

Answer 44

cell division results in more organisms

Question 45

What is cell division?

Answer 45

Formation of two cells from an existing cell.

Question 46

Multicellular Organisms:___ ___ &____=____

Answer 46

- cell - division - englargment - growth

Question 47

What is development? What is it produced by?

Answer 47

process by which an adult organism arisis, produced by repeated cell division and cell differentation.

Question 48

What is the result of development?

Answer 48

adult organism composed of many cells--one body has 50 trillion

Question 49

Is reproduction essential to an organisms survival?

Answer 49

no

Question 50

What is reproduction essential for?

Answer 50

species continuation

Question 51

During reproduction, many____have ways to combine the _____ _____ of individual members to produce_____ that are _____identical to parents.

Answer 51

- species - genetic - information - offspring - not