Biology Answers

 1. Comment “Fatty acids are storage fuels”. The weight of a person ABC is 65 kg. About 11.5 kg of his weight is due to the fat deposits in the body. He went for a hunger strike. Can you explain how long he can survive? i. without water and food? ii. without food but with water? 

Carbonic anhydrase is strongly inhibited by the drug acetazolamide, which is used as a diuretic. Carbonic anhydrase plays a significant role in the secretary processes because it participates in regulating the pH and bicarbonate of body fluids. The experimental curve of initial reaction velocity versus [S] for the carbonic anhydrase is shown below. When the experiment is repeated in the presence of acetazolamide, the lower curve is obtained. Determine the nature of inhibition. Explain with reason.

Calculate the dynamic programming matrix and the optimal local and global alignment for the DNA sequences

a: GAATTC and b: GATTA,

scoring +2 for a match,

-1 for a mismatch,

and using a linear gap penalty function W(L) = -2L

All life exists in cells. Discuss.

Using a worked example show how would you determine if a tall plant was

heterozygous or homozygous tall. Illustrate your answer with appropriate

crosses.

(d) Explain the concept of ‘multiple alleles’. Use the ABO blood grouping system to illustrate your answer. Produce a table to illustrate all possible phenotypes and their respective genotypes.

(It is not sufficient to copy and paste a table from a website)

From the sequence of RNA -C, U, A, C, A- what would you expect the complement strand of DNA to be?

In certain rose plants, white roses and red roses are incompletely dominant to one another. When a red rose is crossed with a white rose, a pink rose will result. What is the probability of producing more pink roses from two pink parents?

Explain what is meant by abiotic and biotic factors in ecology 

Achondroplasia, a form of Hereditary Dwarfism ( 10 points)

Achondroplasia is a hereditary constitutional bone disorder; it is the most common type of dwarfism, in which the child’s arms and legs are short in proportion to body length and have a characteristic face . This disease is caused by a mutation of the fibroblast growth factor receptor-3 gene (FGFR3) on human chromosome 4.

 Document 1 : A pedigree of a family whose certain members are affected by Achondroplasia.

1- Indicate if the allele responsible for the disease is dominant or recessive. Justify the answer.

2- Determine the chromosomal localization of the gene responsible for Achondroplasia .

3- Specify the genotype of each of the individuals (I-1), (III-9), and (IV- 4).

Homozygous fetuses that possess two copies of the mutant gene are not viable, and pregnancy is naturally interrupted.

4- Determine the risk for the couple III- 9 and III- 10 to have a third child affected by Achondroplasia.

Write an essay about the importance of adaptation as a mechanism for the survival of species.