Macromolecules and Properties of Water

Which macromolecule is digested in both the stomach & small intestines & is used by the body to repair & build cells & to create enzymes

• Lipids

• Carbohydrates

• Proteins

• Nucleic Acids

Tags

NGSS.HS-LS1-1

Which characteristic of water contributes to its special, life-sustaining properties?

• Low boiling point that contributes to high heat capacity

• Presence of oxygen that causes oxygen bonds between molecules

• Ionic bonds that create polarity

• Unequal sharing of electrons that creates polarity

Which function is performed by a macromolecule made of nucleotides?

• Store genetic information

• Provide energy

• Function as enzymes

• Conduct nervous impulses

Students in a science classroom observe an insect that appears to be walking on water. The insect is a water strider & it takes advantage of water's unique properties. Which statement below explains the water strider's ability to walk on water?

• Oxygen in water occurs as two bonded atoms & the water strider's legs balance on the molecules.

• The attraction between water molecules creates surface tension & the water strider stands on the molecules.

• The polarity of water molecules are attracted to the legs of the water slider.

• The hydrogen bonds in water cause cohesion & the water strider's legs sit on the bonds.

Tags

NGSS.HS-ESS2-5

What would the human body not have the ability to do if carbohydrates were totally absent?

• The ability to create quick energy & serve as the primary energy source for the body.

• The ability to build the inner components of cell membranes.

• The ability to pass genetic information from parent to offspring.

• The ability to repair & build cells as well as create both enzymes and neurotransmitters.

Which of the following statements is true about the importance of water's high specific heat?

• Water vapor in the air stops the rate at which temperature changes, stabilizing sudden changes.

• Large bodies of water heat & cool quickly to help provide a stable temperature for aquatic organisms.

• In the evenings & winter, the increased cooling of bodies of water can warm the air causing milder climates on the coastlines.

• Organisms are made mostly of water & the high specific heat of water helps maintain homeostasis.

Tags

NGSS.HS-ESS2-5

NGSS.HS-LS1-3

Which macromolecule is made from the monomer shown to the left?

• Protein

• Lipids

• Nucleic Acids

• Carbohydrates

Tags

NGSS.HS-LS1-6

What effect will boiling have on an enzyme's activity?

• decreased active site due to changed shape

• Less substrate due to increased product formation

• increased active site due to changed shape

• more product due to increased molecular movement

This macromolecule has been associated a grate deal with muscle building & is often used during pre-& post workouts to replenish the body of the necessary nutrients it needs to promote increased muscle function & growth. Which macromolecule is made up of a chain of amino acids & allows the muscles to contract making body movement possible?

• lipids

• carbohydrates

• nucleic acids

• proteins

Tags

NGSS.HS-LS1-1

DNA polymerase is an enzyme that catalyzes the synthesis of new DNA during the S phase of cellular division. If an organism suffered from a disease that resulted in a lowering of the pH in its body tissues, what effect would this have on the rate of cellular division?

• Cellular division would decrease.

• Cellular division would increase.

• Cellular division would stop immediately.

• There would be no change in the rate of cellular division.

Tags

NGSS.HS-LS1-4