Vv
ull allu egestivi.
14 marks]
b. by means of illustrative diagrams, describe a simple experiment
you will use to demonstrate breathing in humans.
[16 marks
2.
a. by means of a table state two differences between plant and animal cells
[4 marks]
b. describe how the circulatory system functions as a nutrient and waste
transport system.
[16 mark:
a. explain two significance of osmoregulation.
[4 marks
b. describe how urine is formed in humans.
[16 mark
3.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.