Why are electron microscopes better than light microscopes?

They have high magnification and resolution

What does optimum temperature mean?

The temperature where an enzyme is fastest

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Duplicate of GCSE (9-1) Biology Topic 1: Plant, animal and bacteria cells

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Questions 15

Answers

1
Which of the following applies to prokaryotic cells?
No vacuole
No cell wall
No membrane-bound organelles
No chloroplasts
2
What do we call it when particles move from HIGH concentration to LOW concentration?
Active Transport
Photosynthesis
Spreading
Diffusion
3
Why are electron microscopes better than light microscopes?
They have high magnification
They have high magnification and resolution
The are cheap
They have a high resolution
4
Which enzymes break down proteins?
carbohydrases
proteases
amylase
lipases
5
What is osmosis?
Diffusion of oxygen
Diffusion of water
Active transport
Movement of water using energy
6
Which of the following is in both animal and plant cells?
Flagellum
Nucleus
Chloroplasts
Vacuole
7
Which of these is the smallest?
micrometre
nanometre
Metre
millimetre
8
Why do you use a stain when using microscopes?
For fun
To make the cells colourful
To neutralise the cells
To make cells easier to see
9
Which of these does NOT affect the rates of enzyme reactions?
Substrate Concentration
Temperature
Pressure
pH
10
How are ciliated epithelial cells specialised?
They have hairs called cilia
They don't have a nucleus
They have special enzymes
They have a tail
11
Which of the following is found only plant cells?
Cytoplasm
Cellulose cell wall
Cell membrane
Nucleus
12
What does optimum temperature mean?
The temperature where an enzyme is fastest
The temperature where an enzyme is slowest
The temperature where enzymes start to work
The temperature where an enzyme is denatured
13
which of these is NOT a specialised cell?
Sperm Cell
Egg Cell
Stem cell
Ciliated epithelial cell
14
Which of the following is found in plant, animal and bacteria cells?
Cell wall
Mitochondria
Nucleus
Cytoplasm
15
What is the function of ribosomes?
Contains DNA
Where respiration takes place
Controls what enters and leaves the cell
Site of protein synthesis

Duplicate of GCSE (9-1) Biology Topic 1: Plant, animal and bacteria cells Flashcards | StudBud