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Proteins and Enzymes Overview

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Questions and Answers

What is the primary function of ribosomes?

To catalyze biochemical reactions, including protein synthesis (correct)
To transport amino acids throughout the cell
To store genetic information in a stable molecular form
To produce messenger RNA (mRNA)

Which of these characteristics is NOT true of ribosomes?

They are highly active and have a high molecular weight.
They are biocatalysts.
They are globular proteins.
They are always water soluble. (correct)

What is the role of mRNA in protein synthesis?

mRNA carries the genetic information from DNA to the ribosome. (correct)
mRNA acts as a catalyst to speed up protein synthesis.
mRNA directly binds to amino acids and delivers them to the ribosome.
mRNA provides a template for DNA replication.

How do ribosomes decrease the activation energy needed for a reaction to occur?

<p>By providing a specific binding site for the reactants. (B)</p> Signup and view all the answers

Which of the following is NOT a characteristic of ribozymes?

<p>They are made of protein. (B)</p> Signup and view all the answers

Flashcards

Ribosomes

Molecular machines that synthesize proteins using mRNA.

Protein Synthesis

The process of linking amino acids to form proteins, guided by mRNA.

Ribozymes

RNA molecules that have enzymatic activity and can catalyze reactions.

tRNA

Transport RNA that carries specific amino acids to ribosomes during translation.

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Biocatalysts

Substances that speed up biochemical reactions, such as ribosomes.

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Study Notes