Test 1 Flashcards
An unknown substance has a Ph of 12. If you place this substance in water, you would expect it to produce an excess of which of the following ions.
Hydroxyl ions
Diffusion is nothing more than
The movement of a substance from higher to lower concentration
If a carbon atom has an atomic weight of 12, how many neutrons does it have in its nucleus?
6
Organic compound consisting of long chains of nucleotides?
A) Protein
B) Lipid
C) Carbohydrate
->D) None of the above
Endocytosis is best described as
The engulfing of a food particle by the cell
A prokaryotic cell
Does not have a nucleus
The type of bond formed by water molecules due to their polarity
Hydrogen bond
The atomic weight (mass) of an atom is equal to the number of
Protons and neutrons
Which organelle is made up of a phospholipid bilayer with imbedded proteins
Cell wall
Which organelle distinguishes a plant cell from and animal cell
A) Golgi apparatus
B) Cytoskeleton
C) Mitochondria
->D) None of the above
Indicate group name of the compound -> Cholesterol
Lipid
Indicate group name of the compound -> Starch
Carbohydrate
Indicate group name of the compound -> DNA
Nucleic Acid
Indicate group name of the compound -> Cellulose
Carbohydrate
Indicate group name of the compound -> Enzyme
Protein
The diffusion of water thru a semi-permeable membrane is called?
Law of osmosis
Maintenance of a relatively constant internal environment?
Homeostasis
Site of protein synthesis in a cell (organelle).
Ribosome
An isotope is an atom with extra _____ in its nucleus?
Neutrons
Type of chemical bond where electrons are shared.
Covalent bond
Name of the polysaccharide that plants make to store their excess glucose.
Starch
Name of the building block (monomer) of a protein
Amino acid
Property of lipids that makes them different from other organic compounds.
Hydrophobic
What are two primary differences between prokaryotic and eukaryotic cells. Include an actual organism that is prokaryotic and one that is eukaryotic.
NOT SURE!!!!! HELP!!!!!
