IB Biology Topic 2

What type of molecule is shown in this diagram?

• trans saturated fatty acid

• cis unsaturated fatty acid

• cis saturated fatty acid

• trans unsaturated fatty acid

Starch is a mixture of which two polysaccharides?

• Amylose & Amylopectin

• Amylopectin & Cellulose

• Amylose & Cellulose

• Cellulose & Cellulite

Which of the following properties allow starch to be a good energy storage carbohydrate? One, some or all answers may be correct.

• it is soluble so there is no osmotic effect

• it is coiled so a lot can be fit into a small space

• it is a large molecule so cannot easily leave the cell

• it is branched so it is easier to remove glucose molecules

What molecule is a polysaccharide?

• glucagon

• glycose

• glycerol

• glycogen

Which substance is used for structure in plants?

• amylopectin

• cellulose

• collagen

• starch

In which compounds would a double bond link carbon to oxygen (C=O)?

I. amino acid

II. fatty acid

III. glycerol

• I and II only

• II and III only

• I and III only

• I, II, and III

Tags

NGSS.HS-LS1-6

That is the maximum number of fatty acids that can be condensed with glycerol?

• one

• two

• three

• four

Which described these molecules correctly?

• I: ribose II: amino acid

• I: glucose II: amino acid

• I: ribose II: fatty acid

• I: glucose II: fatty acid

Tags

NGSS.HS-LS1-6

Which is not true about carbohydrates?

• They contain oxygen and hydrogen in a 1:2 ratio.

• They contain carbon, oxygen, and hydrogen.

• They have hydroxyl groups.

• They have carboxyl groups.

Which type of reaction is the breakdown of starch into sugars?

• Denaturation

• Reducation

• Catabolic

• Condensation