STD 12 - 12. ecosystem — NEET STD 11 Science — Question

Statement I: Less than two per cent of the energy in glucose is released and not all of it is trapped as high energy bonds of ATP.
Statement II: Yeasts poison themselves to death when the concentration of alcohol reaches about 30 per cent.

Match List-I with List-II.

List-I	List-II
(A) Flat worms	(I) Nephridia
(B) Paramoecium	(II) Contractile vacuole
(C) Periplaneta	(III) Protonephridia
(D) Earth worms	(IV) Urecose gland

Choose the correct answer from the options given below:

During light-dependent reactions, light energy is converted to chemical potential energy through the process of chemiosmosis in the chloroplasts.
Which of the following statements about this process is false?
(i) The electron carriers of phosphorylation are located in the thylakoid
(ii) During phosphorylation, the chloroplast stroma becomes more acidic than the interior of thylakoid membrane
(iii) Protons diffuse through the protein channels which are CF₀ of the ATP synthase molecules
(iv) ATP is formed from ADP + Pi on the stroma side of the thylakoid in the chloroplast.
(v) During phosphorylation, water splites to form H⁺+2OH^- yielding an e- to PS-II

Collenchyma differs from sclerenchyma

Proteins mainly contain:

Static concept of species was put forward by

In the leaf vascular bundles are found in the

Select the odd one w.r.t. ex-situ conservation.

In glycolysis, a chain of ten reactions, under the control of different enzymes, takes place to produce pyruvate from glucose. What is the true sequence ?
(i) Glucose-6-phosphate.
(ii) Fructose-6-phosphate.
(iii) Fructose 1,6-bisphosphate.
(iv) Dihydroxyacetone phosphate and 3-phosphoglyceraldehyde (PGAL).
(v) 2-Phosphoglycerate
(vi) 1,3-bisphosphoglycerate (BPGA).
(vii) 3-phosphoglycerate