Act Bio 2
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Movement of solutes across a plasma membrane requiring the addition of energy.
Active transport
Which of the following is NOT considered to be an emergent property of water?
transpiration
Contain one or more double bonds which “kink” the carbon backbone.
Unsaturated fatty acids
The cell membrane is made up of many large molecules consisting of a head and tail. These molecules belong to what class of macromolecules?
Lipids
Hydrophilic properties are characteristic of all of the following EXCEPT
the long hydrocarbon chain
If the cell type was a typical animal cell and over time in solution A it began to swell, it would indicate
solution A is hypotonic
Which of the following statements about photosynthetic pigments is true?
Chlorophyll is found in the membranes of thylakoids.
The process by which the binding of the substrate to the enzyme triggers a favorable conformation change, which causes a similar change in all of the proteins’ subunits.
Cooperativity
Which two functional groups are always found in amino acids?
carboxyl and amine
Which of the following molecules orient themselves into sandwich like membranes because of hydrophobic components within the molecule?
Phospholipid
The major class of biological molecules that are not polymers.
Lipids
Binds to the enzyme at the site other than the active site, causing the enzyme to change shape and be unable to bind substrate.
Noncompetitive inhibitor
The process by which protein conformation is lost or broken down is
denaturation
Which of the following molecules contain the most stored energy?
ATP
A secondary structure of proteins
Alpha helix
Enzymes are affected by all of the following EXCEPT
concentration of water
Plant and animal cells differ mostly in that:
Only plant cells have cell walls.
Identify the following: (Image of a molecule)
Polysaccharide
Hydrolysis of lipid molecules yields:
fatty acids and glycerol
Which macromolecule is the main component of all cell membranes?
phospholipids
Identify the following: (Image of a molecule)
monosaccharide
All of the following characterize microtubules EXCEPT:
They develop from the plasma membrane
Linkages between the monomers of proteins.
Peptide bonds
How many different types of amino acids make up the large variety of proteins?
20