AP Bio Unit 1 Review

Translate the following RNA sequence:
AUG AAU UGU UGA

• Met-Phe-Cys-Stop
• Met-Asn-Cys-Stop
• Met-Asn-Cys-Trp
• Tyr-Leu-Thr-Thr

The genetic code is essentially the same for all organisms. From this, one can logically assume which of the following?

• The same codons in different organisms translate into the different amino acids.
• A gene from an organism can theoretically be expressed by any other organism.
• All organisms have experienced convergent evolution.
• DNA was the first genetic material.

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

What type of macromolecule are enzymes?

• Protein
• Carbohydrate
• Lipid
• Nucleic Acid

Which of the following is not a job of a protein

• Act as hormones and enzymes
• Do much of the work in cells and transport materials
• Build tissues and muscles 
• store and transmit genetic information 

Which of the following properties of water enables molecules to cling together as they move from the roots to the leaves of plants?

• Water expands as it freezes.
• Water is an excellent solvent.
• Water exhibits cohesive behavior.
• Water moderates temperature.

What property of water allows it to be such a versatile solvent that it is often called the "universal solvent?"

• Purity
• Polarity and cohesion
• High heat capacity
• Expansion upon freezing

Tags

NGSS.HS-PS1-2

Large bodies of water do not quickly fluctuate, or change, in temperature. Why?

• Water is a solvent.
• Water has a high heat capacity.
• Water acts as a buffer.
• Water is non-polar.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why does water move from the roots to the leaves of plants?

• Water is pushed by solutes.
• Capillary action pulls the water molecules like a chain.
• Water is pulled by gravity.
• Water’s cohesion causes it to “pull” towards the leaves.

Tags

NGSS.MS-LS2-1

Attractions between water molecules due to polarity are called:

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

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NGSS.HS-ESS2-5

Why does ice float?

• As water freezes, it expands and its density decreases.
• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

Tags

NGSS.MS-PS1-4