Questions

Metamorphism is the method of changing the structure of a rock by using heat and temperature.

Hence, for this to happen the parent rock must be in solid form only. Therefore, option C) is true.

An atom is the smallest particle of a substance. Chemical substances are divided into two major groups. They are

1. Pure Substances (and)

2. Mixtures.

There are two types of pure substances that are Elements and Compounds.

Elements : An element is a substance that is made up of only one kind of atoms and cannot be broken down into simpler substances by chemical means. Metals and Non- metals come under elements.

Examples of elements are Iron, Silver, Gold, Mercury etc.

Compounds : A Compound is a substance that is formed when two or more elements combine chemically.

Examples of compounds are Water, Carbon dioxide, methane, vinegar etc.

Mixtures : A Mixture is formed when two or more substances mixed together but not chemically combined.

Example: Air.

Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors.

a. Parvovirus B19 binds preferentially to the erythrocyte blood group P antigen on erythroid precursor cells.

Answers B, C, D are incorrect:

b. after entry the single-stranded viral DNA genome is transported to the cell nucleus where the host DNA polymerase synthesizes the complimentary DNA strand.

c. Parvovirus B19 infection can be diagnosed by direct detection of viral DNA not RNA.

d. the fetus of a seropositive mother is protected from infection by maternal circulating antibodies.

The term facultative anaerobe refers to an organism that which uses oxygen when it is present or grows without oxygen when it is not there.

Footsteps. 

Yes, as you walk forward, you will leave the footstep behind you.

A test plan is the master document that contains all details pertaining to testing of the application. Its contents include:

Testing scope - what is included and what is not included in the testing of the current project 

Assumptions - what are the assumptions that are made for this project 

Milestones - major dates like when testing is going to begin, when it is planned to end, what is the trace review date, what is the production date etc. 

Resources - the resources working on this project along with their contact details 

Defect tracking mechanism - what defect tracking tool will be used, what is the SLA for fixing Critical to Low level IRs etc. 

Test management procedures - who will be notified when there is a critical IR, what reports will be sent daily, if status calls will be held daily or weekly, where will it be held, who is required to join etc. 

Work allocation - resource distribution if more projects are being tested 

Entry and exit criterion - when can a project be accepted for testing (eg. only when smoke testing passes) and when can a project be termed as testing complete (eg. when all testcases are executed and all high level bugs are fixed)