Which part of the digestive system had a low pH to help the enzymes with low optimum pH level

• Mouth

• Large Intesine

• Small Intestine

• Stomach

Which one of these statements about enzymes isn't true.

• The active site on the enzyme has a specfic shape to only fit one substrate.

• When the temperature around the enzyme is above it's optimum temperature, the enzyme will start to denature.

• Enzymes can speed up reactions. Examples can be breaking down molecules, or putting molecules together.

• When a enzyme is in a pH that is not in it's optimum pH range, it will die.

• Denaturing is when the enzyme, and it's active site, change shape.

What does bile do in digestion?

• Protects the cells in the stomach lining from the acid inside it.

• Allows the lock and key model of the enzymes to work more efficently.

• Creates better conditions for good bacteria to grow in digestive system.

• Emulsifies (break down) fats.

Bile is made in the ______ and released from the_____.

• Liver, Gall Bladder

• Kidneys, Small Intestine

• Pancrease, Stomach

• Saliva Glands, Mouth

The Valves in the heart and veins prevent ________.

• Forward Flow

• Cardiac Flow

• Lateral Flow

• Back Flow

Why do arteries have very thick and elastic walls.

• The protect the blood inside.

• To prevent coronary heart disease,

• So substance like oxygen can't move through the walls.

• To withstand the large amount of pressure in the blood they carry.

What treatment for Coronary Heart Disease does this picture show?

• Stent

• Statin

• Heart Transplant

• By-Pass

Algae can photosynthesise.

Complete the word equation for photosynthesis.

water + ______1._________ --------> ________2._______ + oxygen

• 1 Carbon Dioxide

• 1 Glucose

• 2 Carbon Dioxide

• 2 Glucose

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What are the tiny openings that let in the carbon dioxide needed for photosynthesis?

• stomata

• xylem

• phloem

• chloroplast

Tags

NGSS.MS-LS1-6

The goal of mitosis is to

• make a new parent cell

• make two new daughter cells with the same DNA

• make two new daughter cells with different DNA

• to grow a larger toe