CELLMOL LE1 (The Chemistry of the Cell)

Covalent bonds are much higher in energy than non-covalent bonds and are therefore much more stable.

• True

• False

Which of the following functional groups are considered acidic because they have given up a proton and are negatively charged?

• Carboxyl group

• Phosphate group

• Amino group

• Hydroxyl group

• Sulfhydryl group

Which of the following functional groups is considered basic because it has gained a proton and is positively charged?

• Carboxyl group

• Phosphate group

• Amino group

• Carbonyl group

• Aldehyde group

Which of the following functional groups are uncharged at pH values near neutrality?

• Carboxyl group

• Hydroxyl group

• Sulfhydryl group

• Carbonyl group

• Aldehyde group

What is the process that involves carbon-containing compounds losing electrons to other molecules such as molecular oxygen?

(a)  

What is the process wherein carbon-containing compounds gain electrons, which is also typically biosynthetic and requires energy?

(a)  

Water can move across cellular membranes based on the concentration of solutes present in a process called?

• Diffusion

• Osmosis

• Active Transport

• Facilitated Diffusion

Water is able to move much more quickly through a specialized channel protein known as?

(a)  

Which of the following is the most critical attribute of water that accounts for all the others?

• Polarity

• Cohesiveness

• Temperature-stabilizing capacity

• Solvent properties

What type of bond can be seen in water molecules?

• Polar bond

• Non-polar bond