IB Biology Option C

A phospholipid has 2 parts. What are they called? 

• Hydrophilic Head, Hydrophobic Tail 

• Hydrophobic Head, Hydrophilic Tail 

A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails. 

• phospholipid 

• Carbohydrate

• Cholesterol 

• Protein 

At room temperature, water is a liquid and methane is a gas. Which molecular property explains this difference?

• Higher molecular mass of water

• Dipolarity of water

• Presence of more hydrogen in methane

• Higher boiling point than methan

Tags

NGSS.MS-PS1-4

Which property of water allows plants to transport water?

• Cohesion

• Adhesion

• Thermal

• Solvent

Uranium-238  decays into  Thorium-234  by emitting ..........

• an alpha particle

• a beta particle

• gamma rays

• visible light

Tags

NGSS.HS-PS1-8

What is nuclear fission?

• Nuclear fission is the process where the nucleus of an atom splits into two or more smaller nuclei, releasing a large amount of energy.

• Nuclear fission is the process where energy is absorbed by the nucleus of an atom.

• Nuclear fission is the process where the nucleus of an atom splits into smaller electrons.

• Nuclear fission is the process where atoms combine to form a larger nucleus.

Tags

NGSS.HS-PS1-8

Explain the process of nuclear fission.

• Nuclear fission results in the formation of stable isotopes.

• Nuclear fission is the process where atoms combine to form larger nuclei.

• Nuclear fission is the process where the nucleus of an atom splits into two or more smaller nuclei, along with the release of a large amount of energy and additional neutrons.

• Nuclear fission involves the release of a small amount of energy.

Tags

NGSS.HS-PS1-8

What is the role of control rods in nuclear fission?

• Control rods have no impact on the fission process.

• Control rods emit neutrons to speed up the fission process.

• Control rods absorb neutrons and regulate the fission process.

• Control rods are used to cool down the reactor core.

Tags

NGSS.HS-PS1-8

How is nuclear fission different from nuclear fusion?

• Nuclear fission splits heavy nuclei, while nuclear fusion combines light nuclei.

• Nuclear fission releases energy, while nuclear fusion absorbs energy.

• Nuclear fission combines light nuclei, while nuclear fusion splits heavy nuclei.

• Nuclear fission is a renewable energy source, while nuclear fusion is not.

Tags

NGSS.HS-PS1-8

Which type of nuclear radiation is being emitted here?

• Alpha

• beta

• gamma 

• none

Tags

NGSS.HS-PS1-8