Biology Science Bee

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

Tags

NGSS.MS-PS1-1

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

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.

Which end of the water molecule has a slightly positive charge?

• the oxygen end
• the hydrogen end
• both ends are slightly positive
• neither end is positive

Water is a universal solvent because it...

• It can be found anywhere
• It freezes when it gets cold
• floats when frozen
• Dissolves most substances

A ______________ is a large molecule.

• Micromolecule

• Polymer

• Amino Acid

• Macromolecule

Tags

NGSS.MS-LS3-1

Which of the following is not one of the four major classes of macromolecules?

• Lipids

• Carbon

• Protein

• Carbohydrates

• Nucleic Acid

Which macromolecule is used as our main source of energy?

• Lipids/Fats

• Nucleic Acids

• Proteins

• Carbohydrates

Tags

NGSS.MS-LS1-7

Which macromolecule stores energy?

• Carbohydrates

• Proteins

• Lipids/Fats

• Nucleic Acids

Tags

NGSS.MS-LS1-7

This macromolecule breaks down into sugars such as glucose.

• Lipids/Fats

• Nucleic Acids

• Protein

• Carbohydrates

Tags

NGSS.MS-LS1-7