Macromolecule

Macromolecules are (a)   ​ (b)   molecules ​ ​ (c)   for life

examples: ​ (d)   (e)   lipids, nucleic acids

• large
• complex
• essential
• carbohydrates
• protein
• tiny, simple, non-essential
• liquids, gases, minerals
• basic, uniform, optional

Tags

NGSS.MS-LS3-1

Why is it important to test for nutrients in food?

Which nutrient provides the most energy?

• Fats
• Vitamins
• Proteins
• Carbohydrates

Answer explanation

Lipids provide the most energy per gram (9 calories per gram, compared to 4 calories for carbohydrates and proteins).

Which organic molecule would a long-distance runner most likely choose to eat two hours before a race?

• A protein, because it builds muscle mass.

• A lipid because it provides long term energy storage.

• A carbohydrate because it releases energy quickly.

• A protein, because it transports oxygen into the blood stream.

How many grams of lipids contained in a serving of this food item?

• 3 grams

• 300 grams

• 13 grams

• 90 grams

Match the following:

• starches and sugars

• protein

• DNA & RNA in food organisms

• carbohydrates

• fats & oils

• lipids

• meat, fish, eggs, nuts, peas & beans

• nucleic acids

Tags

NGSS.MS-LS3-1

NGSS.MS-LS1-3

What is the primary function of carbohydrates in the human body?

• To provide energy

• To insulate the body

• To store genetic information

• To build muscle tissue

Which macromolecule is primarily responsible for catalyzing biochemical reactions?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

Tags

NGSS.MS-LS1-7

Which of the following is a characteristic of lipids?

• They are responsible for genetic coding.

• They are a major component of cell membranes.

• They are composed of amino acids.

• They are soluble in water.

What type of macromolecule is being represented in this image? 

• carbohydrate
• lipid
• protein
• nucleic acid

Tags

NGSS.MS-LS3-1

NGSS.MS-LS1-7