Define the following terms into biologal? ¡) response ¡¡) Stimulus ¡¡¡) Receptor

Explanation:

(i)A response is a change in the organism A response is a change in the organism resulting

from the detection of a stimulus.

(ii)Stimulus: any change in an organism's environment that causes the organism to react. It is a fancy way of saying “cause”.

(iii)A receptor is a protein which binds to a specific molecule. The molecule it binds is known as the ligand. A ligand may be any molecule, from inorganic minerals to organism-created proteins, hormones, and neurotransmitters. This change is shape slightly alters the protein's function.

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.