Basic Biochemistry

What element must be in an organic compound?

• Oxygen

• Phosphorus

• Carbon

• Hydrogen

Tags

NGSS.HS-LS1-6

What is homeostasis?

• When the internal chemistry in the body is at equilibrium or stable.

• When the body cannot control the internal chemistry of the body.

• When the internal chemistry of the body is unequal and always changing.

Tags

NGSS.HS-LS1-3

Match the following

• 0-6 on the pH scale; Hydrogen (H+) ions

• Neutral

• Help the body maintain homeostasis.

• Base

• 7 on the pH scale; H+ OH- or H₂0

• Buffers

• 8-14 on the pH scale; Hydroxl (OH-) ions

• Acid

Water is a polar molecule. What is the slight charge of hydrogen (H) and the oxygen (O)?

• Hydrogen (+)

  Oxygen (-)

• Hydrogen (-)

  Oxygen (+)

• Hydrogen (-)

  Oxygen (-)

• Hydrogen (+)

  Oxygen (+)

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-6

Match the following properties of water.

• solid ice floats on liquid water.

• Polarity

• Water molecules stick to each other.

• Density

• Water dissolves a lot of substances.

• Cohesion

• Hydrogen is + and oxygen is -

• universal solvent

• Molecules stick to another substance.

• Adhesion

Tags

NGSS.HS-ESS2-5

Match the following types of bonds.

• Hydrogen Bond--in between water molecule

• 
• Ionic Bond--transfer electrons

• 
• Covalent bond--share electrons

• 

Tags

NGSS.HS-PS1-3

The insect called a Water Strider uses this property of water to stay on the surface (top) of the water?

• cohesion

• adhesion

• capillary action

• surface tension

Fish can stay alive under the water in the winter because

• Water molecules stick together.

• Water is more dense than ice.

• Water is less dense than ice.

• Water molecules go against the force of gravity.

Tags

NGSS.MS-PS1-4

Where is the mass of the atom located?

• Nucleus

• Electron Cloud

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-8

An atom has 17 protons, 17 electrons, and 18 neutrons. What is the atomic mass? (a)  

• 35
• 34
• 17
• 18

Tags

NGSS.MS-PS1-1