essay plans

Question 1

using DNA in science and technology

Question 2

A cycle is a biological pathway or process in which the end product of one cycle
becomes the starting point for the next. Write an essay about cycles in biology

Answer 2

1) Nitrogen cycle- nitrogen fixation (1st stage)- starts with nitrogen atoms in nitrogen gas being broken down into ammonium ions, denitrification- rturns nitrogen back to nitrogen gas and releases into atmosphere
2) LIR (calvin cycle)- starts with RuBP reacting with co2 to form 2 GP, ends with some carbon from tp leaves cycle and the rest of molecule used to regenerate RuBP
3) breathing- inspiration- air moves into lungs as atmospheric pressure is higher than that of the thorax, exhalation- air moves out as atmospheric pressure is lower than that of the throax
4) cardiac cycle- vetrincular systole-blood pushed out ventricles into arteries lowering pressure in heart, diastole- blood enters atria via vena cava and pulmonary vein due to low pressure
5) cell cycle- cytokinesis- interphase

Question 3

The importance of shapes fitting together in cells and organisms

Answer 3

1) antigens and antibodies-

Question 4

How bacteria can affect the lives of humans and other organisms

Question 5

The membranes of different types of cells are involved in many different functions

Question 6

How energy is transferred within and between organisms