Diagram shows the transport of respiratory gases in the human body. a. i) Name the structures labelled P and Q. [2 marks]
P:_
Q:_
ii) State two important characteristics of Q that enables the process of gaseous exchange to occur effectively between Q and the blood capillaries. [2 marks]
_
b) Explain how P accepts oxygen from Q and transfers it to the body cells. [2 marks ]
_
c) If an individual inhalers a lot carbon monoxide, what is the effect on the transport of oxygen by P? Explain. [3 marks ]
_

answer; /// i believe the correct answer is (reactants);

answer: c. two haploid cells

explanation:

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'