Biology Answers

What are some factors which can affect the results of fecalysis?

Cell is......unit of living organism

How does replica plating demonstrate that muta- tions to antibiotic resistance can arise even in cells that have never been exposed to the antibiotic?

What is the purpose of the liver extract in the Ames test for chemical mutagens?

What is “mismatched” in the process of mismatch repair?

What is “loss of heterozygosity,” and how is this phenomenon related to the progression of some types of cancer?

What is apoptosis, and what role does it play in preserving the integrity of the genome of a multi- cellular organism?

What is a cell-cycle checkpoint? Which check- points are emphasized in this chapter, and what does each “check” for?

Proteins are dynamic macromolecules. To study proteins a scientist needs to understand their chemical and physical properties. You are a scientist working in an analytical laboratory, your job description is to analyse proteins. A crude sample containing a protein is to be analysed. Discuss all steps and techniques that can be employed in order to isolate, characterise, and determine its amino acid sequence.

Discuss the contribution by scientist that led to the development of central dogma. Further explain how genetic information is expressed in proteins.