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WorksheetsAQA GCSE Biology B1 (textbook units)(cells and microscopes)
Total questions: 31
Worksheet time: 27mins
What type of microscope has the highest resolving power?
light
electron
neither
If the eyepiece lens is x15 and the objective lens is x40, what is the total magnification?
x600
x2.5
x400
x750
what is the name for number 12 on the diagram?
adjustment knob
fine focus
course focus
stage changer
If the magnification was x600, and the image size was 40mm, what is the actual size?
66 micrometres
0.066 mm
24000 micrometres
24mm
1 nm is how many metres?
0.00001
1000
0.000000001
0.000001
What type of cell is this?
prokaryotic
eukaryotic
the parts of a plant cell that an animal cell does not have
cell membrane, vacuole, chloroplast
vacuole, cell membrane, chlorophyll
chloroplast, vacuole, cell wall
chlorophyll, chloroplast, nucleus
Cell walls are made from this carbohydrate
glucose
starch
sucrose
cellulose
what part of the cell is this? and what role does it have?
chloroplast and photosynthesis
mitochondria and photosynthesis
mitochondria and respiration
chloroplast and respiration
What is a prokaryotic cell missing when compared to a eukaryotic one
nucleus
genetic material
flagellum
plasmids
The acrosome in a sperm cell is used for
energy
contains lots of mitochondria
movement
contains enzymes to break down egg
What type of specialised cell is this?
nerve cell
sperm cell
muscle cell
xylem cell
how is it specialised?
contains dendrons
contains myelin sheath to insulate impulses
contains mitochondria for active transport
contains no nucleus to save space
What type of specialised cell is this?
phloem
xylem
meristem
palisade
How are the cells on the left specialised?
contain lignin to help with strength
contain lignin to make them waterproof
contains end plates to slow down water flow
contains pits to allow water in and out
This diagram shows
active transport
diffusion
osmosis
facilitated diffusion
this diagram shows
osmosis
diffusion
active transport
water transport
This diagram shows
osmosis
active transport
diffusion
passive transport
An example of where this occurs is
root hair cells taking in minerals from the soil
root hair cells taking in water from the soil
oxygen moving from blood to cells
glucose moving from blood to cells
the isotonic concentration in this experiment was
0.0
0.2
0.4
0.6
The starting mass of the potato was 0.8g, the final mass was 1.1g, what is the % change?
30.5%
37.5%
45.0%
25.5%
What are the three factors that can affect the rate of diffusion
temperature, concentration gradient and surface area
temperature, surface area and time
surface area, concentration gradient and time
time, temperature and concentration gradient
A hypertonic solution is one that
contains more water and less solute than the cell
contains less water and more solute than the cell
contains less water and less solute than the cell
contains more water and more solute than the cell
What has happened to these red blood cells?
crenation
plasmolysis
lysis
turgidity
What type of solution causes this?
a buffer
isotonic
hypotonic
hypertonic
it is important that the blood remains
isotonic
hypotonic
hypertonic
neutral
what has happened to the plant cell on the right?
lysis
plasmolysis
turgidity
crenation
What type of solution causes this?
hypertonic
isotonic
hypotonic
constant
if each small square is 1cm, what is the surface area : volume ratio of this cube
3:1
6:1
2:1
4:1
single celled organisms have
a low surface area:volume ratio
a high surface area:volume ratio
The two things that multicellular organisms require and why
specialised exhange surfaces, transport system because they have a high SA:V
specialised exchange surfaces, specialised cells because they have a high SA:V
specialised exhange surfaces, transport system because they have a low SA:V
specialised exchange surfaces, specialised cells because they have a low SA:V
