biology - cell structure
What is the fucrion of the nucleus?
controls cell activity and holds DNA that gives instructions for growth and repair
what is the fuction of the mitochondria?
site of aerobic respiration
what is the fuction of the cytoplasm?
where chemical reactions occurs
what is the fuction of the cell membrane?
controls what enters and leaves
what is the fuction of the cell wall?
provides support made of cellulose
what is the fuction of the chloroplast?
site of photosynthesis
what is the fuction of the vacuole?
contains cell sap
what organelles are in an animal cell?
nucleus
mitochondria
cytoplasm
cell membrane
ribosomes
what organelles are in a plant cell?
nucleus
mitochondria
cytoplasm
cell membrane
ribsomes
vacuole
chloroplast
cell wall
what organelles are in a yeast cell?
nucleus
mitochondria
cytoplasm
cell membrane
ribosomes
vacuole
cell wall
what organelles are in a bacterial cell?
cytoplasm
cell membrane
ribosomes
cell wall
what is the fuction of the ribosome?
site of protein synthesis
whats 3 examples of specialized cells?
sperm cell - tail to swim, lots of mitochondria for energy
red blood cell - no nucleus, more space for oxygen, haemoglobin
root hair cell - long projection to absorb more water/minerals
how do you answer find actual size questions? (math)
actual size = image size
magnification
actual size = 24mm = 0.06mm (divided)
400
convert to micrometers (μm)
0.06mm x 1000 = 60 μm
how do you answer find magnifcation questions? (math)
convert units to match
8mm = 8000 (μm) (1000x)
magnification = image size = 8000 = 4000
actual size 2
(got divided)
how do you answer find image size questions? (math)
make units match
image size = actual size x magnifcation
50 x 200 = 10000μm
convert to mm
10000μm ÷ 1000 = 10mm