Biology 116 Exam 3

Front

Where can translation occur in human cells?

Back

Translation can occur in the cytoplasm, the rough ER, and the mitochondria.

Front

What causes the chromatin to relax and allow access to transcription-regulation elements on the DNA?

Back

Acetylation of histone protein tails causes the chromatin to relax.

Front

What is a characteristic that is NOT associated with DICOT plants?

Back

A fibrous root system is NOT a characteristic of DICOT plants.

Front

What type of mutation changes a single amino acid from glycine to alanine?

Back

This is a missense mutation.

Front

Define translation in the context of biology.

Back

Translation is the process by which ribosomes synthesize proteins using mRNA as a template.

Front

What is the role of acetylation in gene regulation?

Back

Acetylation of histone proteins can relax chromatin structure, allowing access to DNA for transcription.

Front

What are the main components of a flower in angiosperms?

Back

The main components include sepals, petals, stamens, and carpels.

Front

What is the difference between monocots and dicots?

Back

Monocots have one seed leaf, while dicots have two seed leaves.

Front

What is a nonsense mutation?

Back

A nonsense mutation is a point mutation that creates a premature stop codon in the protein sequence.

Front

Explain the significance of vascular bundles in plants.

Back

Vascular bundles are crucial for the transport of water, nutrients, and food throughout the plant.