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The stage where the DNA is duplicated is Telophase? Is it true or false if false why?
During Mitosis the cell enters interphase after telophase? is true or false if false why?
Which of the following substances release two high energy electrons when light is shone on them. a) Carotenoids b) Chlorophyll A c) Antenna pigments d) Chlorophyll B
Which one of the four food tests involves heating the sample in a beaker of hot water?

When an enzyme is denatured, it works ten times faster?


  1. Which statements about active transport in root hair cells are correct?

 

      1 Energy is required.

      2 Substances may be absorbed as ions.

      3 The membrane is partially permeable.

 

A. 1 2 and 3

 B 1 and 2 only

C 1 and 3 only

D 2 and 3 only 

sketch a cell with three pairs of chromosomes undergoing meiosis, and show how nondisjunction can result in the production of gametes with extra or missing chromosomes.
Sometimes “uncoupling proteins” are present in the inner mitochondrial membrane. When present these provide an alternative pathway for protons to re-enter the matrix. They “uncouple” the ETC from ATP synthesis. What is the result of this “uncoupling”? Give an example of when this might be beneficial.
How does DNA get copied into each of our cells and what happens if there is an error during this process
describe the changes a molecule undergoes when it absorbs a quantum of light
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