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Unit 1 Study Guide Biology > Concept 2 > Flashcards

Concept 2 Flashcards

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1
Q

Define Matter

A

Anything that has mass and occupies space

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2
Q

What is matter made up of?

A

Atoms

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3
Q

Define atom

A

The smallest of an element that still has the properties of an element

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4
Q

What are the 6 elements necessary for life?

A

Carbon, Hydrogen, Oxogen, Nitrogen, Phosphorus, and Sulfur. (CHONPS)

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5
Q

Define cell

A

The most basic unit of life

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6
Q

What is water (H20) made up of?

A

2 atoms of hydrogen and one oxogen atom

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7
Q

What is a polar molecule?

A

Unequal distribution of charges, one side is more positive and one is more negative

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8
Q

Do polar molecules dissolve in water?

A

Yes (Ex: water)

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9
Q

What is a non-polar molecule?

A

No separation of charge, so no positive or negative plea are formed.

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10
Q

Do non-polar molecules dissolve in water?

A

No (Ex: CO2, O2, Lipids)

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11
Q

What is the organization of life?

A

Atom
Molecule
cell organelles
Cell
Tissue
Organ
Organ Sytem
Organism
Population
Community
Ecosystem
Biome
Biosphere

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12
Q

What are the properties of water?

A

Cohesion and adhesion

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13
Q

Define cohesion

A

The attrition between molecules of the same system (water sticking to water/ surface tension)

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14
Q

What does cohesion cause high amounts of?

A

Surface tension

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15
Q

What does cohesion measure?

A

How difficult it is to stretch or break the surface of a liquid/ resist and external force

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16
Q

Define adhesion

A

The type of attraction that happens between different molecules (Ex: glass, soil, plant tissue, cotton, or water sticking to the sides of the cup of the plants stems)

17
Q

What does adhesion form?

A

Stronger bonds. than cohesion

18
Q

Define high specific heat

A

The temperature of water does not change easily, water has to absorb more heat energy to increase overall temperature compared to other compounds.

19
Q

What does high specific heat help regulate?

A

Cell temperatures in an organism (this makes it so organisms can live under icebergs and in water)

20
Q

Define less dense than a solid

A

Ice (solid water) is less dense than a liquid, so it floats on liquid water

21
Q

Since ice floats on water this makes it so…

A

Life cane exist under frozen surfaces such as lakes/polar seas

22
Q

Define water is a terrific solvent

A

Solution, Solute Solvent. Waters polarity makes it very good at dissolving things and its considered the universal covent. It dissolves more substances than any other liquid.

23
Q

Define hydrophilic

A

Loves water and usually dissolves in water (Ex: salt and sugar)

24
Q

Define hydrophobic

A

They hate water and doesn’t dissolve quickly in water (think dandelions and oil)

Unit 1 Study Guide Biology (3 decks)

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