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Year 9 biology > Everything > Flashcards

Everything Flashcards

(62 cards)

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1
Q

One thing that only an animals cell contains

A

Centrioles

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2
Q

One thing that only a plant cell contains

A

Cell wall

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3
Q

What is the use of a palisade cell

A

To photosynthesise

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4
Q

What does a red blood cell do

A

Carries oxygen around the body

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5
Q

What does a white blood cell do

A

Protects the body against infection

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6
Q

What does the cell membrane do

A

Controls what goes in and out of the cell

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7
Q

What are the two sorts of microscopes called

A

Electronic microscope and a light microscope

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8
Q

What is the calculation for magnification

A

Size of image/actual size of specimen

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9
Q

What are the 2 main types of cells

A

Eukaryotic and prokaryotic cells

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10
Q

What is a eukaryotic cell

A

Where the DNA is inside the nucleus and the DNA is organised into chromosomes

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11
Q

What is a prokaryotic cell

A

Where it has free DNA (not in a nucleus) in large loops

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12
Q

What is diffusion

A

Where particles move from an area of high concentration to an area of low concentration

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13
Q

What is osmosis

A

The movement of water particles from an area of high concentration to an area of low concentration on a semi permeable membrane

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14
Q

What is the purpose of glandular tissue

A

Produces and secretes enzymes, hormones and fluids

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15
Q

What is the purpose of epithelial tissue

A

Is acts as a protective layer, lining the external surfaces and internal cavities

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16
Q

Which organ produces bile

A

The liver

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17
Q

Whack does bile do in digestion

A

Absorption of fats through emulsification

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18
Q

Where does lipase come from

A

The pancreas

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19
Q

What is the name of the enzyme that digests starch

A

Amylase

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20
Q

What is the name of the enzyme that digests fat

A

Lipase

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21
Q

What is the name of the enzyme that digests carbs

A

Amylase

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22
Q

What is the name of the enzyme that digests protein

A

Protease enzymes

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23
Q

Where are the villi located

A

The inner surface of the small intestine

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24
Q

What is a catalyst

A

Something that speeds up a reaction

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25
What is an enzyme
A biological catalyst
26
What are the 2 parts of an enzyme called
The active site and the substrate
27
What is the term for when the active site and substrate join
The enzyme-substrate complex
28
What are enzymes made of
Proteins
29
What is lost when an enzyme is denatured
The precise shape of the active site
30
What are 2 things that can cause denaturing
High temperatures and PH values
31
Where are the enzymes involved in anaerobic respiration found
Mitochondria
32
Is it possible to kill enzymes
No
33
Enzymes are made of long chains of…
Amino acids
34
How many types of amino acids are there
20
35
What are amino acids linked by
Peptide bonds
36
What reagent is used to test for starch
Iodine
37
What reagent is used to test for sugar
Benedict’s
38
What reagent is used to test for Proteins
Buiret’s
39
How would you test for lipids
Emulsion test
40
What are 3 parts of a cell that only the plant cell contains
Chloroplast, cell wall and the vacuole.
41
What does the nucleus do
Controls the cell and holds the DNA
42
What do the mitochondria do in the cell
Produces energy through cellular respiration
43
What do the chloroplasts do in the cell
Is responsible for photosynthesis in the cell
44
What do the ribosomes do in the cell
They are responsible for making the proteins
45
What does the cell wall do for the cell
Provides structural support to the cell
46
What does the vacuole do for the cell
Storage, waste disposal and keeping the shape of the cell
47
What does the cell membrane do for cell
Controls what enters and exits the cell
48
What does the cytoplasm do for the cell
Holds the components of the cell in place and protects them
49
What is the definition of the object
The thing that you are looking at
50
What is the definition of the image
The thing you see when you look down the microscope
51
What is the definition of the magnification
How big or small the object is compared to its real size
52
What is the definition of the resolution
The amount of detail that you can see when looking down a microscope
53
What is the order of magnitude
How many 10x bigger something is
54
How would you calculate the size of the image
Actual size X Magnification
55
How would you calculate the size of the actual object
Size of image/Magnification
56
How would you calculate the magnification
Size of image/size of actual object
57
What is diffusion
The movement of molecules from an area of high concentration to an area of a low concentration. Down the concentration gradient
58
What is osmosis
The movement of water molecules from an area of high concentration to an area of low concentration over a semi permeable membrane
59
What is active transport
The movement of molecules from an area of low concentration to an area of high concentration. Up the concentration gradient.
60
What is a hypotonic cell
Low solute concentration and causes water to enter the cell potentially causing the cell to swell or burst. (The outside solution Is more diluted than the cells cytoplasm)
61
What is a hypertonic cell
High solute concentration and causes water to leave the cell potentially causing it to shrink. (The outside solution is saltier that the cells cytoplasm)
62
What is a isotonic cell
The water concentration stays the same in and outside the cell and water moves in and out of the cell.

Year 9 biology (2 decks)

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