Biology Year 13 Random Retrieval

Acetylation is the addition of a C2H3O group which contains a double bonded oxygen. Where does acetylation occur?

What effect will siRNA have on expression of a gene?

If a tumour suppressor gene mutates, then it can mean the protein it codes for is non-functional. What will happen to the rate of mitosis if this happens?

Cancer is often caused by a mutation causing a cell to divide uncontrollably and spread into other tissues. Name the gene that normally increases cell division:

Which of the following is an example of primary succession?

What should you use to estimate a population of a sessile organism?

Was the cold winter an example of an abiotic factor or a biotic one?

Natural selection can change allele frequencies over time, due to those with the best alleles surviving and reproducing. What is the term used to describe the 'chance' or 'random' selection of alleles in a population?

Which of the above diagrams represents the myofilaments an 'M line' in muscle?

The image above shows a muscle fibre. Name organelle C

What is the structural adaptation which give cones high visual acuity compared to rod cells?

In order for an action potential to be generated in a Pacinian corpuscle, what must happen?

Honey bees can detect the polarised light from the sun and use it to navigate even in cloudy weather. Is this taxis or kinesis?

How does IAA become unevenly distributed?

What effect does low concentrations of IAA have on root tissue?

What word describes the growth response of a plant to a stimulus?

Plant responses to stimuli are controlled by what?

Which of the following molecules require phosphorus? a) Protein b) DNA c) ATP

Where does the Electron Transfer Chain ( ETC) occur?

True or False - Using a different solvent does not alter the distance travelled by different substances in this technique?