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Chemistry of Life
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Multicellular organisms .....
are made up of multiple cells; more than one cell
A unicelluar organism is ....
made up of one cell, only
Multicellular organims are prokaryotes. True or False.
False
Multicellular organims are eukaryotes. True or False.
True
A eukaryote is .....
cells that contain DNA in a nucleus and have membrane-bound organelles.
A prokaryote is a ....
single-celled, no nucleus, no membrane-bound organelles, generally smaller than a eukaryote cell
All cells have ......(name 4)
cell membrane, cytoplasm, organelles, DNA
Most cells are small. Cells have more surface area per volume. True or False
True
What is the smallest functinal and structural unite of all organisms?
a cell
Which of these are the smallest? a cell, atoms, molecules or cell membranes
atoms
A eukaryote has cells that do not contain a nucleus, whereas a prokaryote has cells that have a nucleus
False
He, is it an atom, compound, or a molecule?
atom
H2O, is it an atom, compound, or a molecule?
compound, molecule
NaCl, is it an atom, compound or a molecule?
it is a compound and molecule
O2, is it an atom, compound or a molecule?
molecule
What happens to cells that allow excessive amounts of water to enter
It will swell up and burst
What happens to a cell that loses to much water?
It will shrivel and die
nucleic acid is made up smaller molecules called
nucleotides
DNA is a type of
nucleic acid
Nucleic acids is a
molecule that carries information (like recipe)
Starches are
made of many sugar molecules linked together.
Carbohydrates are made up atoms of ....
carbon, hydrogen, oxygen
Carbohydrates are used for ....
energy, to store energy
What are other names of carbohydrates?
starches, complex carbohydrates, sugars, some fibers
examples of proteins are
meat, chicken, lamb, fish, some vegatables
Proteins are broken down into ....
Amino acids
What are some forms of lipids?
steroids, waxes, oils
What are the functions of lipids?
to store energy, do not mix with water
Lipids are know as ....
fats
What is a a molecule that has a phosphorus head and a lipid tails?
phospholipid
What are the molecules that make up the cell membrane?
phospholipids
What is osmosis?
the movement of water through a cell membrane
A group of atoms that are held together by chemical bonds are called ....
a molecule
What are the basic building blocks of all matter?
atom
Give an example of a molecule.
H20, NaCl, glucose, C6H12O6
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