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bio-101-exam 2

exam 2

QuestionAnswer
Photosynthesis takes in ________ molecules and coverts to____? organic fuel and energy
red light alone vs. red light together alone promotes little photosynthesis and together they are more effective they create more photosynthesis.
where does the cyclic phosphorylation occur? In the chloroplast in the thylakoid membrane
why is noncylic phosphorylation important? The NAPDH provides electrons to make sugars to make the most energy.
Adaptations of plants to conserve the H20, C02, and photons. They shut the stoma to limit water loss by transportation. They have a limited time to build O2 and diminish C02.
membranes are (hydrophilic, hydrophobic) ? They are both hydrophilic and hydrophobic. The heads are hydrophilic and the trails are hydrophobic.
Chemical composition of an enzyme? They are mostly protein but not all protein. There is a case of sugar.
what is potential energy? It is stored energy.
What are the 3 main types of cellular work? Chemical, Mechanical, and Transport
Feedback inhibition? They regulate metabolism
How does shape affect function? Shape always determines function.
What are RNA ribozymes? Sugar
Drugs, poisons, and pesticides on production of ATP? They are irreversible inhibitors that bind to enzymes preventing metabolic reactions. Cyanide inhibits ATP production.
What is the purpose of trans membrane proteins? They are a passageway
What composes cell surface marker? Glyco lipids and glyco proteins
Phospholipids and bilayers They are both hydrophilic and hydrophobic. Phospholipids form bilayers spontaneously.
Diffusion of CO2 and O2 They are small and non polar. They are neutral.
Maintaining proper balance in a cell sodium, potassium and calcium.
Isotonic, hypertonic, and hypotonic. Isotonic is equal, hypertonic is more water on the outside and hypotonic is more water on the inside.
Transport of large molecules into the cell. They are to big so they need to be broken down. They use vesicles for transport. (fuses with membrane and releases content) Exocytosis and endocytosis.
Receptor mediated endocytosis. receives and picks what its pulling in.
Cellular respiration creates ________ for cells? ATP
Use of O2 Aerobically
without O2 Anaerobically
Efficiency of ATP? very EFFICIENT
Oxidation and reduction reactions. Oxidized= LOSS OF AN ELECTRON reduced= gain of electrons
The purpose of NAD+ Transport electrons down the chain
What is the final electron Acceptor? OXYGEN
Where does Glycolysis take place ? In the cytoplasm
Where does the citric acid cycle take place and how much ATP is produced? In the mitochondria and small amount of ATP.
Glycolysis as an intermediate and its by product to reactants. It occurs in the middle of the process. Its like a foundation. It becomes product of step 1 to become reactant to step 2 to become product end of step 2 to become reactant to step 3. Its by product is pyruvate
Why is the electron transport chain so effective? It is more efficient
What is the by product of yeast and fermentation? Carbon dioxide
What do plants split? Water
Energy wavelengths and how much energy is generated The longer the wave the less energy the shorter the way the more energy
Light intensisty number of photons
Importance of pigments Absorb low energy light from visible spectrum
p700 has_______ paths p600 has _______paths p700 has 2 paths p600 has 1 path
Waste products of photosytems? Photosystem 1 doesn't have a waste product photosytem 2 is oxygen
What enter the calvin cycle and what exits? oxygen enters and glucose exits
coenzymes as transporters
Stage 3 oxidation phosphorylation The final stage involves gradient, hydrogen ions and osmosis
Active diffusion across gradient molecules spreading out uses energy
Different proteins in lipid bilayers and what they do? 50+ different proteins they attach the membrane to cytoskelton, junction between cells, used for identification purposes.
Enzymes as inhibitors one will compete and the other will change there shape temp
enzyme and substrate only affects the enzyme. high temps denature the enzyme. The slow at low temps. They are specific to substrate. if the sub doesn't fit the reaction wont occur.
energy activation starting chemical reactions the minimum energy required to start a chemical reaction
What phosphorylation basically means? adding phosphate to make energy
energy coupling the use of an exergonic process to drive an endergonic one
Storage bonds of endergonic energy covalent bonds
destruction by cfc's more of a impact on global warming.
Why are cam plants different? They shut there stoma at night to capture CO2
Created by: lissanicole