CELLS/MICROORGANISIMS Flashcards
(21 cards)
What should biological
drawings include?
Outline of structures seen, date,
title, magnification scale and labels
What do we do to the cells on a
microscope slide to make them
easier to see?
Stain sub-cellular structures
What is a cover slip used for when
making a microscope slide?
PROTECT the cell
What makes cytoplasm a fluid?
Particles a constantly moving over
each other (can flow)
What causes substances to spread
out in the cytoplasm?
The random motion of particles
What is osmosis?
The movement of water molecules
from a dilute to a concentrated
solution across a partially
permeable membrane.
Describe a plant cell that is flaccid
Water does not push cell
membrane against the cell wall, so
cell is not stiff
How is a fungi cell wall different to
a plant cell wall?
Fungi cell walls are not made of
cellulose
Name a sub cellular structure
found in plant but not fungi cells?
Chloroplasts (or permanent
vacuole)
What sub-cellular structure can
only be seen with an electron
microscope
ribosomes
What is the role of ribosomes in a
cell?
Where protiens are made
Proteins are made by joining small
molecules called…
amino acids
Enzymes are made of __________
and ___________ chemical
reactions in cells.
proteins
speed up
What small molecules are used to
synthesis lipids?
Glycerol and (three) fatty acids
What small molecule is used to
synthesise cellulose?
glucose
Which four (of the five) kingdoms
have eukaryotic cells?
animal
plant
fungi
protist
What type of environments can
archaea live in?
Extreme environments
What are the two main groups of
prokaryotes?
True bacteria and archaea
What conditions make an
environment “extreme”?
Extremely salty
Extremely hot
Extremely acidic
Give two ways archaea are different
from true bacteria
Genetic material
their chemistry
