B1.1 Carbohydrates & Lipids Summative

Which molecule is shown in the diagram below?

• Cellulose

• Amylose

• Starch

• Glycogen

What is the product of this reaction?

• • Fatty acid

• • Starch

• Glycogen

• Triglyceride

What bond is formed between two glucose molecules to form maltose?

• Hydrogen

• Peptide

• • α 1-4 glycosidic linkage

• Phosphodiester

Which of the following is a steroid?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-2

Which statement correctly describes the cell membrane structure?

• • A phospholipid bilayer where phosphate heads align facing each other and lipid tails point away.

• • A phospholipid bilayer where lipid tails align facing each other and phosphate heads point away.

• • A phospholipid bilayer where proteins line the outer layer and phospholipids line the inner layer.

• • A layer of phospholipids with phosphate heads facing outside the cell and lipid tails facing the cell cytoplasm.

The diagram shows a simplified model of a cell membrane. Which of the following best explains the arrangement of the molecules in the membrane?

• The red spheres are hydrophobic heads that repel water, while the white tails are hydrophilic and attract water.

• The red spheres are hydrophilic heads that attract water, while the white tails are hydrophobic and repel water.

• Both the red spheres and the white tails are hydrophilic and attract water.

• Both the red spheres and the white tails are hydrophobic and repel water.

The micrograph shows a part of a plant cell from the leaf of Anemone sp.

1. Label structures in the plant cell above:

   1. 1. using the letter R where starch can be found

   2. 2. using the letter S where lipids can be found

   3. 3. using the letter T where cellulose can be found

Tags

NGSS.MS-LS1-2

State the reaction that forms disaccharides from monosaccharides.

Draw the products of the reaction between the two monosaccharides shown in the diagram below.

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

Explain how the structure of cellulose and glycogen are related to their functions. [6]