7.9c

Letter E...

• active site

• enzyme

• substrate

• products

Enzymes are _______________ that _____________________ chemical reactions by ____________ the amount of activation energy required to start the reaction.

• carbohydrates, slow down, lowering

• proteins, speed up, increasing

• lipids, speed up, lowering

• proteins, speed up, lowering

Tags

NGSS.MS-LS1-7

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Tags

NGSS.MS-LS3-1

What is the purpose  of an enzyme?

• give permission for the reaction

• raise activation energy

• speed up reactions

• control how many reactions occur

Letter C...

• active site

• enzymes

• substrate

• products

Tags

NGSS.MS-LS1-7

Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.

• puncture

• denature

• double

• delete

The central region of an atom where its neutrons and protons are is its 

• nucleus 

• electron cloud

• core 

• center 

How many electrons does this oxygen atom have?

• 16

• 8

• 24

• 6

Tags

NGSS.MS-PS1-1

How many protons does this isotope of titanium have?

• 48

• 22

• 26

• 70

Tags

NGSS.MS-PS1-1

If both protons and neutrons are found in the nucleus, why is it positive?

• The reason it is positive is because neutrons have a positive charge and protons have a negative charge.

• The reason it is positive is because neutrons have a negative charge and protons have a positive charge

• The reason it is positive is because neutrons have no charge and protons have a positive charge.

• The reason it is positive is because neutrons have no charge and protons have a negative charge