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 ]
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Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

Approximately 90% of all cases of polycystic kidney disease are inherited in an autosomal dominant fashion. the disease is typically related to mutations to genes (pkd1 and pkd2). pkd genes can be found on chromosome 16. the disease occurs in approximately 1: 800 to 1: 1000 people. here is a hypothetical example. the dominant allele d will cause the development of pkd. the recessive allele is known as d. what genotypes would correspond to suffering from pkd? dd, dd what genotypes would correspond to being normal (not suffering from pkd)? dd consider that 1: 1,000 people have pkd in your population of 325million. consider that pkd is inherited in an autosomal dominant fashion. show you math for all of the following questions: what is the genotypic frequency for dd? what is the genotypic frequency for dd? what is the genotypic frequency for dd? what is p? what is q? how many people in your population would have pkd?