bio quizlet

What happens when you add NaF and pyruvate (in the form of Na Pyruvate)? (Compare CO₂ production to the tube containing a lot of NaF and the one containing both pyruvate and NaF) Explanation?

1) The production of CO₂ increased in comparison to the tube containing strictly NaF.This happened b/c pyruvate is the compound broken down to start fermentation and NaF is an inhibitor that stops the production of pyruvate...so it basically balances out

41.Which of the following statements about mitochondrial chemiosmosis is NOT true? (A) A proton gradient is established across the inner membrane of the mitochondrion. (B) The potential energy released from the mitochondrial proton gradient is used toproduce ATP. (C) The mitochondrial proton gradient provides energy for muscle contraction. (D) Proteins embedded in the inner mitochondrial membrane play an important role inATP synthesis. (E) Heat energy is required to establish the electron transport chain.

E

A researcher is investigating the effects of a chemical that makes thylakoid membranes permeable to hydrogen ions ( + H ). Which of the following is the most likely direct effect of adding the chemical to plant cells? - The plant cells will produce less NADPH. - The chloroplasts will generate less ATP. - Chlorophyll will require less light energy to excite its electrons. - The plant cells will split fewer water molecules into hydrogen ions and oxygen.

The chloroplast will generate less ATP if they added this chemical directly to the plant cells because this chemical increase the permeability of thylakoid membranes to hydrogen ions ( + H ). ATP synthesis occurs when the proton gradient forms inside the thylakoid membrane so if the thylakoids membrane becomes more permeable to hydrogen ion than the proton gradient will not form inside the membrane and low or no ATP SYNTHESIS OCCURS IN THIS CASE.

what is the role of water in photosynthesis

provide electrons

As substrate concentration increases:

reaction rate will also increase up to a certain point (when all enzyme molecules are saturated with substrate)

an addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment types. which of the following best supports the claim that this species is better adapted to environmental changes than other photosynthetic species are?

the additional pigments allow the species containing them to harvest energy from wavelengths of light that the other photosynthetic species

According to the chemiosmotic theory (chemiosmotic coupling), the energy required to move protons from the mitochondrial matrix to the intermembrane space against a concentration gradient comes most directly from

the hydrolysis of ATP