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WorksheetsCell bio remote revision
Total questions: 10
Worksheet time: 6mins
tick two ways you can tell the difference between prokaryotic and eukaryotic cells
the prokaryotic cells have a nucleus
the eukaryotic cells have a nucleus
prokaryotic cells don't have ribosomes
prokaryotic cells have a cell wall but eukaryotic cells don't
prokaryotic cells are smaller than eukaryotic cells
Ribosomes are important in a cell because they......
control what goes in and out of a cell
they are the site of aerobic respiration which provides energy for the cell
they produce proteins like enzymes and hormones for the cell
they are involved in photosynthesis
Give two adaptations of the different cells of the small intestine
they have many mitochondria
they have many ribosomes
they quickly divide and multiply
they are adapted for digestion
which is the correct definition of a high water potential
lots of water molecules in a given area
lots of sugar molecules in a given area
less water and more sugar molecules in a given area
high amounts of sugar in a water like substance
tick two boxes to describe how plants absorb water and minerals from the soil
the xylem vessel absorbs the water by osmosis
there are many mitochondria in root hair cells to provide energy for active transport
the root hair cells are adapted for diffusion of substances across the cell membrane
the root hair cells are adapted by having a large surface area
Tick one adaptation which allows a concentration gradient to be maintained between the capillaries and the alveoli
reduced blood in the capillaries
a large surface area
alveoli being one cell thick
increased blood flow to the capillaries
what happens before cell division starts?
the chromosomes split up
the chromosomes line up along the equator
the cell grows and makes more of the substances it needs
mitosis happens
what happens to the DNA in a nucleus at the start of cells division
the DNA copies itself
the chromosomes are pulled apart
the DNA is pulled apart to make two strands
how do you calculate the time it takes for cells to carry out cell division?
count them
count the cells you see going through division and divide it by the number of cells then multiply by the time it takes
use a stopwatch to time how long the cells take to go through cell division
use a microscope and a stopwatch to time how long the cells take and how many cells are dividing
which types of cells will be going though the fastest rate of cell division? (two boxes)
muscle cells
cancer cells
palisade cells
root hair cells
