Radicals

Which of the following statements is true about free radicals?

• Free radicals take electrons from human body cells and cause changes in the structure of DNA causing cell mutations

• Free radicals have excess electrons

• Free radicals are produced in the body only

• Free radicals are substances that are not needed by the body at all to ensure that all the processes in the body work properly

Tags

NGSS.MS-LS3-1

How are antioxidant substances helpful in maintaining a healthy body?

• Antioxidant substances have the ability to stabilise the effects of free radicals by filling empty electrons in free radicals

• Antioxidant substances have the ability to ensure that the number of free radicals is regulated by the amount needed by the body

• Antioxidant substances have the ability to break down excess fat in the body

• Antioxidant substances have the ability to inhibit the oxidation process in food

√5

• 11√5

• 11√10

• 5√5

• 12√10

Q1. What is the value of the expression?

• A) 13√3

• B) 10√30

• C) 13√6

• D) 11√3

• √18 + 11√2
• 22√5
• 11√20
• 14√2

• 0
• √5
• 1
• -2√15

• 17√2
• 9√1
• 9
• 9√2

Q1. What is the value of the expression?

• -5√1

• 8√2 + 13√3

• 21√5

• 20√5

Write with radical. Assume that all variables represent positive real numbers.

• @@rac{1}{ oot{3}{xy}}@@

• @@ oot{3}{xy}@@

• @@ oot{3}{x} + oot{3}{y}@@

• @@ oot{3}{x} imes oot{3}{y}@@