Lactose

According to the map, which region has the highest rate of lactase persistence?

• Northern Europe

• East Africa

• Middle East 1

• West Africa

According to the map, a person from which region would have the highest probability of being lactose intolerant?

• Southern Europe

• East Asia

• Middle East 2

• West Africa

Tags

NGSS.HS-LS3-2

What is an enzyme?

• A protein that speeds up a chemical reaction

• A molecule that stores large amounts of energy

• A component of milk

• A cellular substance that fills our food

Tags

NGSS.HS-LS1-6

NGSS.HS-LS1-7

Which of the subjects in the picture is a disaccharide?

• Lactose

• Lactase (enzyme)

• Glucose

• Galactose

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-5

For a lactose intolerant person, was is the purpose of taking "lactaid"?

• It fills the role of the lactase, breaking down lactose

• It recombines the glucose and galactose

• It prevents the lactase from breaking down the lactose

• It replaces the lactose so the lactase has more to break down

If a person breaks down lactose normally, what would you expect to see after they eat ice cream?

• Blood glucose levels will increase

• Blood glucose levels will decrease

• Lactose levels will increase

• Galactose levels will decrease

How do the transcription factors know where to bind with the DNA?

• the transcription factors bind to wherever the repressor protein is produced

• the transcription factors can bind anywhere on the DNA strand and have the same effect

• the unique shape of the transcription factor interacts with the sequence of bases

• the RNA polymerase shows the transcription factors where to bind to the DNA

What is lactose?

• A type of protein

• A type of sugar

• A type of fat

• A type of vitamin

Which enzyme is responsible for breaking down lactose in the human body?

• Amylase

• Lactase

• Protease

• Lipase

Lactose is composed of which two monosaccharides?

• Glucose and fructose

• Glucose and galactose

• Fructose and galactose

• Glucose and sucrose