Questions

a.) Quality Assurance

Quality assurance is an activity that establishes and evaluates the processes that produce products. Quality assurance would measure processes to identify weaknesses and then correct them to continually improve the process: Eg. Code review.

b.) Quality Control

Quality control is a process in which the product's quality is compared with standards and corrective actions taken if required. Quality control activities focus on identifying defects in the actual products produced. Eg. Testing.

c.) Test Case

A test case is a unit level document describing the inputs, steps of execution and the expected result of each test condition for every requirement from the BRD. Testers determine whether the application is working correctly or not based on the test case that is being executed. A test case is marked as "Pass" if the application works as expected and is marked as "Fail" if otherwise. Test cases also aide in generating test status metrics.

d.) Test Condition

Test condition is the condition on which the test execution evaluates to pass or fail. Eg of a test condition: Set Password field should accept a mix of Alphanumeric and Special characters on mandatory basis and throw error message otherwise.

e.) Test Script

Test script is the set of instructions performed on the application to verify its functions.

f.) Test Data

Test data is the input data used to test a particular functionality. Eg: Username and password to test a login screen.

g.) Test Bed

Test bed is the environment on which the testing is done and includes the software and hardware set up that is required for testing the application.

Goitre is characterized by the swelling of the neck region. This is due to the enlargement of the thyroid gland which secretes hormone thyroxine. Thyroxine has iodine as an integral part of it. If there is not sufficient iodine in one's  diet, the thyroid gland swells up.

It gets contaminated by lead

Glycogen is the storage form of glucose in animals and humans which is analogous to the starch in plants. Glycogen is synthesized and stored mainly in the liver and the muscles.

Random mutations are the ultimate source of genetic variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances, the new alleles can be favored by natural selection. Polyploidy is an example of chromosomal mutation.

Mutations are changes in the DNA. A single mutation can have a large effect.

1) mutation - an alteration in DNA sequence, various types

2) intragenic recombination - results in entirely new associations of genes not present in either parental genome.

Two forms of intragenic recombination:

a) crossing over
b) independent assortment
3) reticulation – acquisition of genetic material from unrelated or relatively unrelated sources (e.g., hybrid species, horizontal gene transfer).

Amino acids are a crucial, yet basic unit of protein, and they contain an amino group and a carboxylic group. They play an extensive role in gene expression processes.

Amino acids become proteins when 50 or more are bonded together in a chain. All the millions of different proteins in living things are formed by the bonding of only 20 amino acids.

Eight of these amino acids are essential and cannot be produced by the body.

They are:

• Leucine

• Isoleucine

• Lysine

• Threonine

• Methionine

• Phenylalanine

• Valine

• Tryptophan

•  Histidine is an amino acid that is categorized as semi-essential since the human body doesn't always need it to properly function

Nonessential amino acids are produced by the human body either from essential amino acids or from normal protein breakdowns. Nonessential amino acids include:

• Asparagine

• Alanine

• Arginine

• Aspartic acid

• Cysteine

• Glutamic acid

• Glutamine

• Proline

• Glycine

• Tyrosine

• Serine.