Cells Test Two

Which major group of macromolecules are the fastest source of energy?

• proteins

• nucleic acids

• carbohydrates

Which statement BEST compares lipids and carbohydrates?

• Carbohydrates are composed of water and ammonia, and lipids are composed of trisaccharides.

• Carbohydrates are made of sugars, not ammonia and water; lipids are made of fatty acids, not sugars.

• Carbohydrates are composed of monomers, and lipids are composed of polymers.

• Lipids do not form polymers, although they are large molecules made from smaller molecules by dehydration reactions.

• Carbohydrates are composed of nucleotides, and lipids are composed of sugars.

What type of biological molecule provides the main source of human food energy?

• hydrocarbon

• carbohydrate

• DNA

• amino acid

What type of lipid is responsible for forming the basic bilayer structure of a cell membrane?

• glycerol

• hormone

• phospholipid

• steroid

The diagram below represents the energy levels required for molecules A and B to combine and form AB. What would the addition of an enzyme, specific for the reaction between A and B, do to the activation energy?

• It would increase the activation energy.

• It would decrease the activation energy.

• It will keep the activation energy constant.

• It will inhibit the activation energy.

Tags

NGSS.HS-PS1-4

A biology student creates a table that shows the function of the four major macromolecules. For which function does the student list an incorrect macromolecule?

• transport oxygen in the blood

• help with muscle contractions

• store and transmit genetic information

• provide usable chemical energy for cells

What type of cell does the picture show?

• a eukaryotic cell, because it contains chloroplasts

• a eukaryotic cell, because it contains a nucleus

• a prokaryotic cell, because it contains energy releasing mitochondria

• a prokaryotic cell, because it has compartmentalized organelles

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Which structures carry out cell movement?

• ribosomes

• nucleoli

• flagella

• chromosomes

What cell part is "selectively permeable" because it regulates what enters and leaves the cell?

• cell wall

• Golgi apparatus

• mitochondria

• cell membrane

Tags

NGSS.MS-LS1-2

Select all of the structures that both prokaryotic and eukaryotic cells have.

• ribosomes

• flagella

• mitochondria

• DNA

• nucleus