Chapter 5 Multiple choice Questions

. Apoptosis can be considered as which of the following?

Enhanced cellular survival.

Cellular proliferation.

Cellular splitting.

Cellular suicide.

. Proteins which control gene expression are known as which of the following?

Histones.

Transcription factors.

Receptors.

Polymerases.

. Cytochrome c is released from which organelle triggering apoptosis?

Mitochondria.

Nucleus.

Golgi Apparatus.

Endoplasmic reticulum.

. The proteins which are activated and breakdown proteins are called which of the following?

Dehydrogenases.

Phosphatases.

Caspases.

Kinases.

. The role of caspases is to do which of the following?

To add phosphate groups to proteins.

To add phosphate groups to lipids.

To cleave membrane lipids.

To cleave proteins.

. Which of the following is true of apoptosis?

It is used throughout the life of the organism.

It is only used during the development phase of an organism.

It is only used on the death of the organism.

It is only used before fertilisation.

. Which best describes epigenetics?

It is the modification of proteins.

It causes the change of a phenotype without the alteration of the DNA sequence.

It causes the change of a phenotype by insertions into the DNA sequence.

It causes the change of a phenotype by deletions from the DNA sequence.

. Apoptosis can be triggered by which of the following?

By only mitochondrial-dependent mechanisms.

By only mitochondrial-independent mechanisms.

By mitochondrial-dependent mechanisms and mitochondrial-independent mechanisms.

Following necrosis.

. Cytochrome c can mediate apoptosis by interacting with which of the following?

A pyruvate dehydrogenase complex.

A spliceosome.

An apoptosome.

A mitochondrial electron transport chain complex.

. The expression of the protein p53 is regulated by which of the following?

Cytochrome c.

The insulin receptor.

Mdm2.

Bax.

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