Electrons donated by chl-a molecules during the process of non-cyclic photophosphorylation do not come back to the same chlorophyll molecule. Justify.

Describe the process of non-cyclic photophosphorylation.

In non-cyclic photophosphorylation, the electrons released by Ferredoxin are accepted by............... .

What do you understand by the term in question. Ground state of chlorophyll-a molecule.

Justify the statements . If the answer is false , change the underlined word(s) to make the statement true . i. The DNA molecule is double stranded and the RNA molecule is single stranded . ii. The process of translation occurs at the ribosome . iiii. The job of mRNA is to pick up amino acids and transport them to the ribosomes . iv Transcription must occur before translation may occur .

For a pair of electrons transferred during non-cyclic path, the products formed are.

A molecule in which centre of gravity of positive nuclei and revolving electrons do not coincide is

The entire process of photosynthesis consists of a number of reactions. Where in the cell do each of these take place? Synthesis of sugar molecule…………..

Read the following statements and find out the incorrect statement. A. Ultimately all the food that is respired for life processes comes from photosynthesis. B. The energy released by oxidation in respiration is directly used for the life processes. C The carbon skeleton produced during respiration is used as precursors for biosynthesis of other molecules in cell. D. Plants, unlike animals, have no specialised organs for gaseous exchange but they have stomata and lenticels for this purpose. E. During oxidation within a cell, all the energy contained in, respiratory substrates is released free into the cell in a single step, which is trapped as chemical energy in the form of ATP.

Read the following paragraph and answer the questions: If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing gue to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses haet energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistance box (meaning that the energy exchange takes place between the two objects only ), then no energy can flow from inside the box or come into the box. Which principle do we learn about from this process?

All the molecules needed by the cell for division are synthesized during ... and non dividing & preparatory phase of cell cycle is