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tekilochka [14]
3 years ago
5

Diagram shows the transport of respiratory gases in the human body.

Biology
1 answer:
miss Akunina [59]3 years ago
3 0

Answer:

ai) P= Red blood cell   Q= Alveoli

ii)1. It gives the lungs a large surface area to volume ratio.

2. It is moist and thin.

b) P has a disc or biconcave shape which allows the O2 to bind to it with the help of a protein called haemoglobin for it to be transferred to various parts of the body.

c) Carbon monoxide will bind to the haemoglobin to form carboxyhaemoglobin causing oxygen disruption

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Assume that all possible “ABO” blood phenotypes are present in a human population that is in Hardy-Weinberg equilibrium. If the
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Answer:

the frequency of individuals with Type B blood in the population is 0.1977

Explanation:

Given:

Frequency of A allele is p = 0.24

Frequency of the individuals with blood type O is r = 0.38

Question: What is the frequency of individuals with Type B blood in the population, fB = ?

You need to apply the Hardy-Weinberg Equilibrium:

p²+q²+r²+2pq+2pr+2qr = 1

Here,

p, q and r are the frequencies of the alleles

Calculating the frequency of the allele q:

r=\sqrt{0.38} =0.6164

q = 1-p-r = 1-0.24-0.6164 = 0.1436

Frequency of individuals with type B blood:

f_{B} =q^{2} +2qr=(0.1436)^{2} +(2*0.1436*0.6164)=0.1977

3 0
3 years ago
You discover a unicellular organism in a pool in an abandoned salt mine. The organism has cell walls, but the walls do not conta
jenyasd209 [6]

Answer:

False

Explanation:

All bacteria  contain peptidoglycan in the their cell wall; the major component of peptidoglycan is the N-acetylmuramic acid. The peptidoglycan in bacteria helps to protect the bacteria plasma membrane and cell as a whole from environmental stress as well as maintaining its cell morphology.

In this case, the unicellular organism that was discovered is most likely an archaea. Archaea are organisms that have a semi rigid cell wall with the absence of peptidoglycan.

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Name one of the organs in the digestive system where digestion takes place​
katrin [286]

Answer:

stomach

Explanation:

7 0
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How do I study science and remember everything that I need to know?
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Flashcards or memorizing like saying the sentence, picking out a key word like ''green'', and then reciting it will help. Like yellow and blue make _____. Do this until you can remember it in the back of your mind. many study tips are posted on the internet! The limbic system in your brain is actually what stores memory.
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Energy can change in two different ways. It can undergo a transfer, or it can undergo a transformation. For each of these exampl
tatuchka [14]

Answer:

Energy transfer is the movement of energy from one location to another. For example, when electricity moves from a wall plug, through a charger, to a battery.

Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.

While energy can be transferred or transformed, the total amount of energy does not change ­– this is called energy conservation.

Explanation:

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