Cell Structure 8.2

Which of these structures are present in plant cells, but not animal cells?

• cell wall and cell membrane

• cell membrane and mitochondria

• cell wall and chloroplasts

• mitochondria and chloroplasts

A student is developing a model to show how most proteins are synthesized in animal cells. Which organelles would be LEAST useful for the student to include in the model?

• ribosomes

• endoplasmic reticulum

• Golgi apparatus

• chloroplasts

The instructions for making proteins are coded in the (cytoplasm / DNA / endoplasmic reticulum / nucleus) of a cell. In a eukaryotic cell, these instructions are located in the (cytoplasm / DNA / endoplasmic reticulum / nucleus).

• cytoplasm / endoplasmic reticulum

• DNA / nucleus

• endoplasmic reticulum / cytoplasm

• nucleus / DNA

Tags

NGSS.HS-LS1-1

Which cell structure is correctly matched with its function?

• vacuole: stores material inside the cell

• cell membrane: divides the cell into two halves

• lysosome: manufactures proteins

• ribosome: packages and modifies proteins

Tags

NGSS.MS-LS1-2

The cell membrane is made up of a lipid bilayer as shown in the model.

Which of the following describes the structure and function of the cell membrane?

• The hydrophilic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophobic tails form an oily layer inside the membrane that keeps water out of the cell.

• The hydrophilic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophobic tails form an oily layer inside the membrane that allows water to enter the cell.

• The hydrophobic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophilic tails form an oily layer inside the membrane that keeps water out of the cell.

• The hydrophobic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophilic tails form an oily layer inside the membrane that allows water to enter the cell.

The pancreas is an organ present in some animals. It produces enzymes that are used in the digestive system of the animal. Which cell structure is likely to be abundant inside pancreas cells?

• cell walls, because cell walls cannot be digested by enzymes

• chloroplasts, because chloroplasts provide the energy for making enzymes

• nuclei, because nuclei contain the instructions for synthesizing enzymes

• ribosomes, because enzymes are synthesized on ribosomes

A student is comparing the cells of a prokaryote, an animal, and a plant. Identifying which two cell parts would show that the cell was a plant cell, and not a cell of a prokaryote or an animal?

• nucleus and mitochondria

• cell wall and chloroplast

• cell wall and cell membrane

• cell membrane and mitochondria