If there is a DOUBLE bond between _________ in the fatty acid chain, then it is said to be ____________.
carbons, unsaturated
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seesaw
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fairy
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fairy
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baam
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15
What is the role of Cholesterol in the plasma membrane
Cholesterol functions as a buffer, preventing lower temperatures from inhibiting fluidity and preventing higher temperatures from increasing fluidity.
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lifesaver
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fairy
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rocket
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lifesaver
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25
Describe how an enzyme can lower the activation energy of a reaction
1)Substrate orientation 2)Straining substrate bonds 3)Providing a favorable microenvironment 4)Covalently bonding to the substrate
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25
Describe the different type of cell junctions
tight seals to prevent leaks(tight), allow movement of molecules between neighboring cells(gap), keep neighboring cells attached to eachother(desmosome/anchor)
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15
Collection of genes involved in a pathway that are transcribed together as a single mRNA in prokaryotic cells.
operon
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15
What is the final electron acceptor in the ETC
Oxygen
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15
What is a kinase?
an enzyme that catalyzes the transfer of a phosphate group from ATP to a specified molecule.
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15
What is feedback regulation, give an example of negative feedback
a change in a given direction causes change in the opposite direction.EX: air conditioning
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15
Explain the difference between the terms endergonic and exergonic
Exergonic: have a negative âG RELEASE free energy= energy is a product. Endergonic: a positive âG requires an input of energy= energy is a reactant
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25
List the different three components of the cytoskeleton
actin filaments, microtubules, and intermediate filaments.
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20
What is meant by the term C3 or C4 plant?
C3: majority of plants, have no special features to combat photorespiration. C4: minimize photorespiration by separating initial CO2 and calvin cycle
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banana
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rocket
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rocket
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baam
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15
Steroid hormones usually result in a longer term affect on cellular function explain why this is the case
Because blood is water-based, lipid-derived hormones must travel to their target cell bound to a transport protein