Question

In: Biology

The addition of phosphate groups to intermediate molecules in glycolysis results in: a. Increased potential energy...

The addition of phosphate groups to intermediate molecules in glycolysis results in:

a.

Increased potential energy of that intermediate molecule

b.

Use of ATP

c.

Subsequent generation of ATP via substrate-level phosphorylation

d.

Direct generation of ATP via oxidative phosphorylation

e.

A, B, and C are correct

Which of the following statements regarding electron excitation in photosynthesis is correct?

a.

All forms of electromagnetic radiation are equally capable of generating free radicals

b.

All wavelengths of light induce equal degrees of electron excitation

c.

Electron excitation within photosynthetic pigments can result in fluorescence, heat, and reduction/oxidation reactions

d.

Following electron excitation, the degree of resonance-energy transfer would be increased if carotenoids were absent from the antenna complex

e.

All of the above are correct

  1. Heavy rains can cause leaching of ions from soil. The ion that is most likely to be lost is __________, which is absorbed via ___________.

    a.

    Potassium (K+); membrane channels

    b.

    Chloride (Cl-); membrane channels

    c.

    Nitrate (NO3-); membrane cotransporters

    d.

    Magnesium (Mg2+); membrane antiporters

    e.

    Calcium (Ca2+); membrane cotransporters

Solutions

Expert Solution

The addition of phosphate groups to intermediate molecules in glycolysis results in:

a.

Increased potential energy of that intermediate molecule

b.

Use of ATP( Phosphorylation id addition of phosphate molecule that has been derived from ATP meaning 1 molecule of ATP is consumed

c.

Subsequent generation of ATP via substrate-level phosphorylation

d.

Direct generation of ATP via oxidative phosphorylation

e.

A, B, and C are correc

Which of the following statements regarding electron excitation in photosynthesis is correct?

a.

All forms of electromagnetic radiation are equally capable of generating free radicals

b.

All wavelengths of light induce equal degrees of electron excitation

c.

Electron excitation within photosynthetic pigments can result in fluorescence, heat, and reduction/oxidation reactions( when plant absorb light and are exicted the electron must come to ground state which can be done by two ways radioative and non radioative way.In radiative way photon reduce its energy in the form of fluroscence and in non radiative way photon transfer energy to other electron so that the other eleectron gets exicted.

d.

Following electron excitation, the degree of resonance-energy transfer would be increased if carotenoids were absent from the antenna complex

e.

All of the above are correct

Heavy rains can cause leaching of ions from soil. The ion that is most likely to be lost is __________, which is absorbed via ___________.

a.

Potassium (K+); membrane channels

b.

Chloride (Cl-); membrane channels

c.

Nitrate (NO3-); membrane cotransporters

during heavy rain nitrogen loss leads to leaching where nitrate moves down to the soil and moves out of the root xone via membrane cotransporters

d.

Magnesium (Mg2+); membrane antiporters

e.

Calcium (Ca2+); membrane cotransporters


Related Solutions

Why do all the intermediates in glycolysis contain phosphate groups?
Why do all the intermediates in glycolysis contain phosphate groups?
Why are two phosphate groups added to glucose in stage one of glycolysis? A) To destabilize...
Why are two phosphate groups added to glucose in stage one of glycolysis? A) To destabilize the intermediates in stage one, making the stage two reactions more favorable. B) To provide all of the phosphate for ATP synthesis during stage two. C) To increase the net ATP produced from one glucose molecule. D) To activate the enzymes in stage two.
The standard free energy change of phosphate hydrolysis is shown below for several molecules in the...
The standard free energy change of phosphate hydrolysis is shown below for several molecules in the glycolytic pathway. Molecule ?G? (kJ/mol) Phosphoenolpyruvate ?61.9 1,3-Bisphosphoglycerate ?49.4 ATP ? ADP + Pi ?30.5 Fructose-6-phosphate ?15.9 Glucose-6-phosphate ?13.8 Which statement explains why glucose phosphorylation could not occur without ATP investment? A.   Without ATP investment in stage I of glycolysis, the concentration of ATP would become too high and would inhibit phosphofructokinase, leading to inhibition of the entire glycolytic pathway. B.   Without ATP investment,...
2. The Lennard-Jones potential is a popular interatomic potential energy surface (PES) for diatomic molecules given...
2. The Lennard-Jones potential is a popular interatomic potential energy surface (PES) for diatomic molecules given by the following formula VLJ(R)=4ε[(σ/R)^12 - (σ/R)^6] with R the distance between the two nuclei in the molecule, and σ and ε molecule-dependent parameters. (c) Consider the diatomic molecule O2, for which the Lennard-Jones parameters are given by ε = 5.164eV and σ = 1.075 ̊A. The atomic mass of oxygen is m(O) =15.999. Find a value for the force constant k and the...
Aerobic Cellular Respiration (getting energy from food) involves four steps: Glycolysis, the Intermediate Acetyl CoA Reaction...
Aerobic Cellular Respiration (getting energy from food) involves four steps: Glycolysis, the Intermediate Acetyl CoA Reaction (Prep Reaction), the Citric Acid (Krebs) Cycle, and the Electron Transport Chain. State: where each of the four steps takes place in a cell how many ATP are generated at each step, if at all what is the starting (ie. glucose or pyruvate) and ending substance for each step
In addition to energy needs, cancer cells also need metabolic intermediates for biosynthesis. Explain how increased...
In addition to energy needs, cancer cells also need metabolic intermediates for biosynthesis. Explain how increased reliance on glycolysis would be beneficial in this respect. Glycolysis offers a growth advantage to cancers growing under hypoxic conditions. Why might this be the case? (Hint: what is the product of anaerobic glycolysis?) A decrease in oxidative phosphorylation also leads to a decrease in reactive oxygen species (ROS). Why might this be an advantage for cancer cells?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT