Understanding amino acids and its relation to a biological clock.

How do amino acid sequences function as a "biological clock"?

Understanding the major macromolecules of life : lipids, carbohydrates, proteins and nucleic acid. Complete with a coloured diagram of the lipid bilayer.

Explain the following from the perspective of life: Carbohydrates and lipids are important because of the number of atoms in each molecule; proteins are important because of the shape of the molecule; and nucleic acids are important because of the number and sequence of its components.

species

consider two imaginary cells. Both are cube shaped (the same dimension in all directions) The first cell has a side length of 10 micrometers. The second has a side length of 100 micrometers. Calculate the surface areas and volumes of both of these cells then calculate the sa/v for each of them. The SA, V and Sa/V dived out ...continues

comparison of evolution arguments

As succinctly as possible "LIST" Dr. Millers arguments in support of evolution and list Dr. Johnson's arguments against evolution. Try to distinguish between the arguments and the beliefs of the debaters. You are interested in comparing the points of fact in the discussion. There are eight 2 1/2 page letters in the proble ...continues

Evolution Vs. Creation

How should a scientist or instructor answer the questions creationist students bring forward in biology courses?

Biochemistry calculations

MOVED FROM BIOCHEMISTRY TO BIOLOGY BY ADMIN Please see the attached files Part 1 Change in OD 475/2min yaxis,tyrosine concentration mM xaxis. Part2 as above ,Tyrosinase concentration in micrograms/ml,xaxis SA=change in OD/min/mg enzyme.Calculate this result from part 2 only.

What is the difference between genotype and phenotype?

What is the difference between genotype and phenotype?

What is the Polymerase Chain Reaction?

The Polymerase Chain Reaction (PCR), devised by Kary Mullis in the mid-1980's has revolutionized molecular biology by allowing a whole new approach to the study and analysis of genes. i) What is PCR? ii) What are the steps involved? iii) What are the necessary reagents involved in making the PCR work?

What is a-complementation?

What is a-complementation?

The theories contributing to Modern biology: The Cell Theory, Gene Theory, Homeostasis, and the Theory of Evolution by Natural Selection.

I have read my text and I still do not totally understand the four theories that contribute to Modern Biology. I would appreciate if you could give me a brief outline of the theories, including the theorists, the dates, and the basic concepts of the theories.