A) Why are lysosomes important to the health of cells? (1 point)
They create cell boundaries and make cells rigid.
They break down worn-out cell parts that are no longer needed.
They move proteins around the cell.
They allow cell organelles to move freely through the cell as needed.
The correct answer is:
They break down worn-out cell parts that are no longer needed.
A) Which of the following organelles provide structure and rigidity to a plant cell? (1 point)
cell membrane
ribosome
cell wall
chloroplast
The correct answer is cell wall.
A) What would happen to a plant if the chloroplasts in its cells became damaged? (1 point)
The plant would be unable to make protein.
The plant would be unable to reproduce.
The plant would not make glucose and oxygen.
The plant would not have a rigid structure.
The correct answer is: The plant would not make glucose and oxygen.
A) Using your understanding of the function of chloroplasts and specialized cells, infer why plant root cells lack chloroplasts. (1 point)
Root cells have two central vacuoles.
Root cells have many mitochondria.
Roots require fewer nutrients.
Roots are underground and are not exposed to sunlight.
The correct answer is: Roots are underground and are not exposed to sunlight.
A) What is the main difference between prokaryotic and eukaryotic cells? (1 point)
Prokaryotes use RNA instead of DNA.
Prokaryotes lack ribosomes to make proteins.
Prokaryotes lack a cell membrane on the outside.
Prokaryotes lack membrane-bound organelles.
The correct answer is: Prokaryotes lack membrane-bound organelles.
A) A virus mutates, and therefore it has which of the following traits of living things? (1 point)
It grows and develops.
It uses energy.
It evolves.
It is made of cells.