Biology Answers

Critically review the strategies of a sustainable environment? (3 pages long)

Q3. The following is a pedigree for a rare human trait: (10 Marks)

a.    What is the most probable mode of inheritance for the trait indicate above? Give reasons. (3 Marks)

b.    If individuals III-3 and III-8 marry, what is the probability of them having a child with the trait? (3.5 Marks)

c.    If individuals IV-1 and IV-10, what is the probability of them having a child who expresses the trait? (3.5 marks)

a.    which diagram(s) shows synapsis? (1 Mark)

b.    Which diagram(s) starts with a haploid cell? (1 Mark)

c.    In which diagram did segregation of both chromosome pairs occur? (1 Mark)

d.    What phenomenon occurred in division # IV? (1 Mark)

If the products of respiration are carbon dioxide and water, why don’t we drown when we breathe?

• What is an ATP molecule? Is it a Enzyme? Its co-factor? co-enzyme or prosthetic group? Yes? No? 
• How many ATP are equal to 1 NADH, NAHPH, FADH and FMNH2?
• What would happen if Adenine (A) is replaced with all three other DNA bases Cytosine (C), Guanine (G), and Thymine (T)? What would be the implications for bioenergetics of reactions that involve ATP hydrolysis.

Which structure is carrying blood to the heart from the lungs?

A. pulmonary veins

B. superior vena cava

C. pulmonary artery

D. aorta

E. inferior vena cava

F. none of these

Which structure is bringing blood from the lower part of the body to the heart?

A. Inferior vena cava

B. Superior vena cava

C. Aorta

D. Pulmonary veins

E. Pulmonary artery

F. None of these

Which structure is bringing blood from the upper part of the body to the heart?

A. Inferior vena cava

B. Pulmonary veins

C. Superior vena cava

D. Aorta

E. Pulmonary artery

F. None of these