Chemistry in Living Systems

Which of the following is true about water?

• The oxygen has a partial positive charge and the hydrogen as a partial negative charge.

• The oxygen has a partial negative charge and the hydrogen has a partial positive charge.

• Both the oxygen and hydrogen have a partial positive charge.

• Both the oxygen and hydrogen have a partial negative charge.

Tags

NGSS.HS-ESS2-5

Which of the following is true about hydrogen bonding?

• Oxygen atoms are attracted to each other

• Hydrogen atoms are attracted to each other

• Oxygen atoms are attracted to hydrogen atoms in the same water molecule

• Oxygen atoms are attracted to hydrogen atoms in a different water molecule

This image shows

• Diffusion

• Active Transport

• Passive Transport

This image shows

• Diffusion

• Active Transport

• Passive Transport

This image shows

• Diffusion

• Active Transport

• Passive Transport

Which of the following are true about amino acids? (choose 2)

• DNA determines their structure

• They monomers of lipids

• They are a good source of energy

• They are monomers of proteins

Tags

NGSS.HS-LS1-1

Water molecules are

• Polar and dissolve other polar molecules

• Polar and dissolve nonpolar molecules

• Nonpolar and dissolve other nonpolar molecules

• Nonpolar and dissolve polar molecules

Which of the following are true about waxes? (choose 2)

• They make up the cell membrane

• They are good at waterproofing

• They are made up of carbon rings

• They are very hydrophobic

Which of the following are true about phospholipids? (choose 2)

• They make up the cell membrane

• They are a quick source of energy

• They have both a polar and a nonpolar side

• They make a waterproof coating

Which of these is true about simple carbohydrates? (choose 2)

• They are make up of long hydrocarbon chains

• They provide energy for cells

• They can be broken down quickly

• They are very hydrophobic