Quiz Review Session

Quiz Review Session

University

34 Qs

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Quiz Review Session

Quiz Review Session

Assessment

Quiz

Science

University

Practice Problem

Medium

NGSS
HS-LS1-7, HS-PS1-4, HS-LS2-5

+4

Standards-aligned

Created by

Sumhitha Malladi

Used 1+ times

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34 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statements best describes the mechanism by which size exclusion chromatography (SEC) separates biomolecules?

Smaller molecules elute first because they diffuse more quickly through the mobile phase, while larger molecules elute later due to steric hindrance within the column matrix.

Larger molecules elute first because they cannot enter the porous beads of the stationary phase, traveling a shorter path. Smaller molecules enter the pores and take longer to elute.

Smaller molecules interact more strongly with the charged column matrix, leading to delayed elution compared to larger molecules.

Separation is driven by hydrophobic interactions, where molecules with more hydrophobic regions elute later because of increased interactions with the column.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following correctly represents what SDS stands for?

Sodium dodecyl sulfoxide – a detergent that denatures proteins while preserving their native charge.

Sodium dodecyl sulfide – a reducing agent that breaks disulfide bonds to linearize proteins for electrophoresis.

Sodium dodecyl sulfate – a surfactant that helps proteins retain their tertiary structure during electrophoresis.

Sodium dodecyl sulfate – an anionic detergent that denatures proteins and creates a uniform negative charge, dissociates noncovalently bound subunits, and denatures proteins.

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Galactose is a C4 epimer of glucose, which of these is D-galactose?

Media Image
Media Image

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Carbohydrates have distinct structural variations that influence their biological function. Which of the following statements about carbohydrate structure is correct?

Monosaccharides are linked by peptide bonds to form polysaccharides, which serve as structural and energy-storage molecules.

Anomers are a type of enantiomer that differ in configuration at the anomeric carbon formed during ring closure of a monosaccharide.

Anomers are a type of diastereomer that differ in configuration at the anomeric carbon formed during ring closure of a monosaccharide.

 D- and L- isomers of a monosaccharide with the same common name (ie glucose) differ in configuration at all chiral carbons, making them diastereomers rather than enantiomers.

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Which of the following carbons is the anomeric carbon?

B)

C)

D)

F)

A)

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Which of the following carbons is the anomeric carbon?

B)

E)

D)

F)

A)

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Below is an image of the disaccharide Maltose. Where are the anomeric carbons?

A) 1 and 1’

B) 1 and 4’

C) 4 and 1’

D) 1 and 6’

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