Chapter 4 Quiz

Question 1

First Step in protein synthesis

Answer 1

mRNA is copied from DNA strand and leaves nucleus

Question 2

Second Step in protein synthesis

Answer 2

Ribosome attaches to mRNA, signal peptide is created

Question 3

Third Step in protein synthesis

Answer 3

signal recognition particles bind to peptide, stops protein synthesis temporarily.

Question 4

Fourth Step in protein synthesis

Answer 4

recognition particles bind to receptor, opening a channel in ER allowing recognition particles to leave

Question 5

Fifth Step in protein synthesis

Answer 5

Protein synthesis resumes, growing polypeptide is fed into ER

Question 6

Sixth Step in protein synthesis

Answer 6

Enzyme removes the signal peptide from the polypeptide

Question 7

Seventh Step in protein synthesis

Answer 7

Ribosomal subunits and mRNA leave while polypeptide stays in ER where it turns into protein

Question 8

Functions of Microtubules: Centrosomes

Answer 8

Act as a major microtubule organizing center for the cell

Question 9

Functions of Microtubules: Centrioles

Answer 9

Involved in assembly/disassembly of microtubules, especially during cell division

Question 10

Functions of Microtubules: Cilia

Answer 10

Beat in sweeping motion to transport particles in single direction or transport to an organism

Question 11

Functions of Microtubules: Flagella

Answer 11

Beat in a whiplike motion to propel organism along

Question 12

Functions of Microtubules: Basal Bodies

Answer 12

Direct movement and organization within cilia and flagella

Question 13

plant cell image

Answer 13

Question 14

Endomembrane System Image

Answer 14

Question 15

Mitochondria Image

Answer 15