B1 Cell Structure Flashcards

1
Q

Chloroplast function

A

Absorbs light for Photosynthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Mitochondria function

A

Releases energy through respiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Cell membrane function

A

Contols movement of substances in and out of a cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Ribosomes function

A

Protein synthesis, where protein is made

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Vacuole function

A

Helps keep cell rigid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Nucleus function

A

Controls cell activities. Contains genetic information needed for new cells to be made.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Cell wall function

A

Strengthens cell, gives it support.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Cytoplasm function

A

Suspended organelles. Where most chemical reactions needed for new life happens.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which cell parts are only in plant cells?

A

Cell wall, chloroplasts and permanent vacuoles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the parts of the microscope?

A

Eyepiece lens, nosepiece, coarse focus adjustment, fine focus adjustment, clip, stage height adjustment, light source, condenser, diaphragm lever, stage, objective lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Focus is…

A

How sharp the image appears

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Eyepiece lens is…

A

Lens nearest the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Magnification is…

A

The image size compared to the object size

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Objective lens is…

A

Lens nearest the object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The stain is…

A

Chemical used to colour the specimen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Resolution is…

A

The ability to distinguish between 2 separate points. The level of detail shown.

17
Q

Microscopy calculation is…

A

/observed cell \
/ Size \
/—————-\
/Actual \
/cell X Magni-\
/size fication\

18
Q

Prokaryotic cells are…

A

Cells with no nucleus. Mainly bacteria.

19
Q

Eukaryotic cells are…

A

Plant and animal cells. “Regular” cells.

20
Q

Differences between Eukaryotic and Prokaryotic cells…

A

Prokaryotic = Uni-cellular
Have plasmid
Bacteria

Eukaryotic = Multi-cellular
Have Nucleus
Fungal, plant and animal

21
Q

Nerve cell function and structure

A

Specialised to carry electrical impulses around the body

  • Long axon, carries impulses
  • Dendrites, makes connections to other cells
  • Synapses, provide energy
22
Q

Muscle cell function and structure

A

To contract and relax

  • Proteins, make fibres contract
  • Mitochondria, transfers energy for chemical reactions that allow cells to contract and relax
  • Glycogen, used in cellular respiration
23
Q

Sperm cell function and structure

A

To fertilise egg cell by breaking through it

  • Long tail, helps sperm swim through female reproductive system
  • Middle section, mitochondria store which transfers energy for tail
  • Head, shape helps to swim through liquids, stores acrosome to break outer layer of egg
24
Q

Diffusion is…

A

Net movement of particles from an area of high concentration to an area of low concentration

25
Diffusion in relation to state of matter...
Diffusions only happens in gasses and liquids. It moves faster in gasses because the particles have more energy. Diffusion is passive, it requires no energy.
26
What factors speed up diffusion?
- Temperature rise - Large concentration gradient - Gas
27
Diffusion in and out of cells
Oxygen and dissolved food molecules diffuse into the body cells, moving from higher to lower concentration.
28
What are stem cells
Cells that have not undergone differentiation. This means that they have the potential to develop into any type of specialised cell.
29
Active transport...
Allows substances to move into cells throught he membrane against the concentration gradient
30
Osmosis is....
The movement of water molecules from an area of high water potential (dilute) to an area of low water potential (concentrated) across a partially permeable membrane
31
Osmosis required practical results in terms of glucose concentration in water
Higher the glucose concentration in water then the lower the mass is compared to before the potato chip was placed in