Biology Unit Test Flashcards

(55 cards)

1
Q

Cells are

A

The basic unit of life

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2
Q

What is osmosis?

A

The movement of water across a membrane

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3
Q

Who is Robert Hook

A

The person who coined the term cells

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4
Q

Plant cell is (circle or rectangle)

A

rectangular

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5
Q

Staining causes what organelle to become visible

A

Nucleus

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6
Q

An organelle which plant cell do have but animal cells do not

A

cell wall and chloroplast

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7
Q

Organelle responsible for storage

A

Vacuole

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8
Q

Organelle that regulates movement of substances into and out of the cell

A

Cell membrane

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9
Q

Meiosis

A

halves the chromosomes

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10
Q

Cell membranes are composed of…

A

Proteins phospho lipids

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11
Q

responsible for transporting water and dissolved minerals in plants

A

Xylem

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12
Q

Stomata

A

plants get rid of waste from it

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13
Q

an organelle found in only animal cells

A

centriole

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14
Q

Ribosomes

A

synthesized protein

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15
Q

Selectively permeable membrane

A

allows only certain types of molecules to pass through````

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16
Q

diffusion

A

odours are spread through the air by this process

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17
Q

Purpose of staining cells

A

Improve the contrast

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18
Q

That organelle that enables reproduction by instructions

A

Nucleus (DNA)

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19
Q

Cell wall is made up of

A

Cellulose

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20
Q

Produces ATP

A

Mitochondria

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21
Q

Produces glucose

A

Chloroplast

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22
Q

Lysosomes

A

Contain digestive enzymes

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23
Q

What type of life are eukaryotic cells

A

Plant animal fungi cells

24
Q

Prokaryotic

25
How to calculate magnification
eyepiece times objective lens
26
What happens to the field of view of the microscope when the magnification increases
Field of view gets smaller
27
Number of mm in one cm
10
28
the greek symbol for the prefix micrometers
mu
29
How many microns in one meter
One million
30
the proper technique for preparing a wet mount slide
put a drop of water over the thing then cover slip when stain then paper towel and hten the stain goes across
31
how an image appears under a microscope
backwards and upside down
32
use which lens first on a microscope
lowest objective lens
33
who discovered that all plants and animals were composed of cells
Theodore Schwann. Matthias Jakob Schleiden
34
resolution
is limited by the wavelength of the microscope
35
Rudolf Virchow
stated that all cells come from pre-existing cells
36
in this type of electron microscope, the cells are non-living
TEM
37
Allows large particles to cross the cell membrane by facilitated diffusion
Protein channels
38
A solution in which the solute concentration outside is lower than the solute concentration inside
Hypertonic
39
A vacuole may excrete waste by this process
Exocytosis
40
process of a cell ingesting a large substance such as bacteria
Cygocytosir (white blood cell engulfing bacteria)
41
Active transport
Energy is required, membrane proteins are required, molecules are transported against the concentration gradient
42
Smells travelling through the room caused by
Diffusion (passive transport/molecules moving with the concentration gradient)
43
If you water your plants with salt water, the cells will shrivel up because it is
Hypotonic
44
The process by which oxygen and CO2 molecules move across the cell membrane
diffusion
45
This happens if too much water moves into an animal cell
Hemolysis
46
Semi-liquid material that surround the organelles in the cell
Cytoplasm
47
Groups of cells that function together make up a
Tissue
48
A system that can exchange matter and energy w its surrounding
Open system
49
The organelle that packages and stores proteins
Golgi Apparatus
50
Produces ATP through cellular respiration
Mitochondria
51
The three main types of plant tissue
Ground tissue vascular tissue dermal tissue
52
Moves water and minerals
Xylem
53
Responsible for cellular division and growth in plants
meristem
54
the process which produces oxygen
Photosynthesis
55
Is a result of minerals in the root cell causing water to enter by osmosis
Root Pressure