Lysosomes are important to the health of cells because they break down worn-out cell parts that are no longer needed.
Why are lysosomes important to the health of cells?(1 point)
Responses
They move proteins around the cell.
They move proteins around the cell.
They allow cell organelles to move freely through the cell as needed.
They allow cell organelles to move freely through the cell as needed.
They break down worn-out cell parts that are no longer needed.
They break down worn-out cell parts that are no longer needed.
They create cell boundaries and make cells rigid.
9 answers
Which of the following organelles provide structure and rigidity to a plant cell?(1 point)
Responses
cell membrane
cell membrane
cell wall
cell wall
chloroplast
chloroplast
ribosome
Responses
cell membrane
cell membrane
cell wall
cell wall
chloroplast
chloroplast
ribosome
The organelle that provides structure and rigidity to a plant cell is the cell wall.
What would happen to a plant if the chloroplasts in its cells became damaged?(1 point)
Responses
The plant would be unable to reproduce.
The plant would be unable to reproduce.
The plant would not have a rigid structure.
The plant would not have a rigid structure.
The plant would be unable to make protein.
The plant would be unable to make protein.
The plant would not make glucose and oxygen.
Responses
The plant would be unable to reproduce.
The plant would be unable to reproduce.
The plant would not have a rigid structure.
The plant would not have a rigid structure.
The plant would be unable to make protein.
The plant would be unable to make protein.
The plant would not make glucose and oxygen.
If the chloroplasts in a plant's cells became damaged, the plant would not make glucose and oxygen. Chloroplasts are essential for photosynthesis, the process by which plants convert sunlight into energy, producing glucose and oxygen as byproducts.
Using your understanding of the function of chloroplasts and specialized cells, infer why plant root cells lack chloroplasts.(1 point)
Responses
Roots require fewer nutrients.
Roots require fewer nutrients.
Root cells have two central vacuoles.
Root cells have two central vacuoles.
Root cells have many mitochondria.
Root cells have many mitochondria.
Roots are underground and are not exposed to sunlight.
Responses
Roots require fewer nutrients.
Roots require fewer nutrients.
Root cells have two central vacuoles.
Root cells have two central vacuoles.
Root cells have many mitochondria.
Root cells have many mitochondria.
Roots are underground and are not exposed to sunlight.
Plant root cells lack chloroplasts because roots are underground and are not exposed to sunlight. Chloroplasts are used for photosynthesis, which requires light, so they are not needed in root cells that do not receive sunlight.
What is the main difference between prokaryotic and eukaryotic cells?(1 point)
Responses
Prokaryotes lack a cell membrane on the outside.
Prokaryotes lack a cell membrane on the outside.
Prokaryotes lack ribosomes to make proteins.
Prokaryotes lack ribosomes to make proteins.
Prokaryotes use RNA instead of DNA.
Prokaryotes use RNA instead of DNA.
Prokaryotes lack membrane-bound organelles.
Responses
Prokaryotes lack a cell membrane on the outside.
Prokaryotes lack a cell membrane on the outside.
Prokaryotes lack ribosomes to make proteins.
Prokaryotes lack ribosomes to make proteins.
Prokaryotes use RNA instead of DNA.
Prokaryotes use RNA instead of DNA.
Prokaryotes lack membrane-bound organelles.
The main difference between prokaryotic and eukaryotic cells is that prokaryotes lack membrane-bound organelles.