Bioblast Challenge Part 2

Human skin color is an example of:

• selection

• continuous variation

• discontinuous variation

• speciation

Which of the following is NOT the cause for genetic variation?

• Mutation

• Soil pH

• Crossing over of chromosome

• Random assortment of chromosome

The following factors can cause genetic variation EXCEPT?

• Climate

• Mutation

• Crossing over

• Independent assortment

The graph shows the types of selection for a population.

What are the conclusions can be made to the graph?

• The graph shows a disruptive selection.

• The graph shows a directional selection.

• The graph shows a stabilising selection.

• The selection is against the extreme phenotypes.

Human ABO blood group is an example of

• continuous variation

• discontinuous variation

• selection

• speciation

Which of the following statements regarding the use of enzymes is FALSE?

• Enzymes lower the activation energy for a reaction.

• The activity of enzyme is not affected by pH.

• The activity of enzymes is affected at high temperatures.

• Enzymes are basically made up of protein.

Part of the enzyme that interact with the substrate are called:

• Cofactors

• Active sites

• Allosteric site

• Reaction sites.

Glycolysis yield a net energy of _____ATP molecules per molecules of glucose.

• 0

• 1

• 2

• 4

In glycolysis, fructose-1,6-bisphosphate splits, forming two molecules of:

• Citric acid.

• Glucose

• acetyl CoA

• G3P

The product of cyclic photophosphorylation are

• ATP

• NADPH

• Oxygen

• Carbon dioxide