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Life Science > Chapter 3 > Flashcards

Chapter 3 Flashcards

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0
Q

Organic compounds

A

Contains carbon and hydrogen; assioated with living things

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1
Q

Define mixture

A

Combo of substances in which individual Substances retain their own
properties

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2
Q

Define enzymes

A

Protein that regulate all chemical reactions in cells

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3
Q

Define inorganic compounds

A

Made from other elements other than carbon

source for living things

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4
Q

Define passive transport

A

Movement of substances through the cell membrane without input of energy

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5
Q

Define diffusion

A

Random movement of Molecules from a populated area into a little area

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6
Q

Define equilibrium

A

When molecules are equally spread throughout substance

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7
Q

DeFine osmosis

A

Diffusion of water through cell membrane

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8
Q

Define active transport

A

Input energy is needed to move materials through cell membrane

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9
Q

Define exocytosis

A

Vesicles membrane fuses w/ cell membrane and the The vesicles contents are released

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10
Q

What is matter

A

anything that has mass and takes up space

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11
Q

What is energy

A

Anything that brings change

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12
Q

True or false. everything is made up of matter

A

True

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13
Q

What can energy do

A

Can hold matter together or break it apart

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14
Q

Where are electrons located

A

Outside nucleus

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15
Q

True or false. Electrons are involved in chemical reactions

A

True

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16
Q

What holds atoms together

A

Energy

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17
Q

What Is an element

A

1 kind of atom

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18
Q

An element cannot be broken down into simple form by chemical reaction. True or false

A

True

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19
Q

What is a compound

A

2 or more Elements in exact proportion

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20
Q

Is water a compound

A

Yes.

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21
Q

What are the two types of compounds

A

Molecular or ionic

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22
Q

Group of atoms held together by energy of chemical bonds. What is this

24
Q

Describe photosynthesis

Study These Flashcards
A

When producers use light energy to make sugars or food

25
What is respiration
Chemical reactions occur that break down food molecules into energy
26
Describe fermentation
Oxygen lacking cells release amounts of energy from glucose molecules Produce waste
27
What is an ion
Electrically charged atoms
28
When Atom loses an electron what happens
The Atom has more protons than electrons so it becomes positively charged
29
True or false. | Atoms are usually neutral
True
30
True or false. | opposite charges do not attract
False
31
What are ionic compounds
Oppositely charged ions that form these neutral compounds
32
Define mixture
Solids, gases, liquids or any combo of them
33
True or false. | most chemical reactions in living organisms take place in mixtures
True
34
What is: | 2 or more substances mixed evenly
Solution
35
Describe suspension
When liquid or gas has another substance in equally spread throughout it
36
What to compounds all living things made of
Inorganic and organic
37
What do organic compounds always contain
Carbon and hydrogen
38
What for things organic compounds contained
Carbohydrate ,lipids,proteins , nucleic acids
39
What are carbohydrates
Supply energy for cell processes
40
Two carbohydrates
Sugar /starches
41
What is a lipid
Fats and oils | Release large energy
42
Describe protein
Small molecules called amino acids
43
Are proteins the building blocks of structures the many organisms
Yes
44
Describe nucleic acid
Large molecules that store important information in cells
45
example nucleic acid
DNA | RNA
46
Describe inorganic compound
Made from element other than carbon
47
True or false | All chemical reactions in living things take place in water
True
48
What do most organisms use water for
Transporting materials
49
Is water an insulated in living things
Yes
50
Chemical energy stored in food molecules is changed into what?
Into forms needed activities necessary for life
51
Can Enzymes be used again
Yes
52
Does metabolism need enzymes
Yes, for chemical reactions
53
Do most cells need oxygen to break down food
Yes
54
What happens during respiration
Chemical reactions occur Food molecules break down Energy released
55
Oxygen and food enter the cell what comes out
Carbon dioxide and energy and water
78
The total of chemical reactions are what?
Metabolism

Life Science (7 decks)

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