Why do muscle cells contain significantly more mitochondria than skin cells?
Muscle cells have larger nuclei that require less energy.
Skin cells do not use cellular respiration to produce energy.
Muscle cells require more ATP to support continuous contraction.
Mitochondria store calcium, which muscles need to contract.
A student designs an experiment to study the role of lysosomes. They expose cultured cells to a chemical that disables lysosome enzymes.
What prediction best describes the expected result of this experiment?
Waste materials and damaged organelles would accumulate in the cell.
The cells would not be able to replicate DNA.
Protein synthesis would increase rapidly.
The plasma membrane would break down.
A molecule is produced within a ribosome in a cell . What most likely happens to the newly formed molecule once it is inside the Golgi apparatus of the cell?
It will be used to form new genetic material .
It will be broken down so its components can be reused.
It will be stored for the cell's future energy needs
It will be modified before it is packaged for transport.
A scientist is studying a eukaryotic cell that must perform the following tasks:
Generate energy for cellular processes
Break down old or damaged cell parts
Store water and maintain internal pressure
Which combination of organelles is correctly matched to these functions?
Chloroplast – Generate Energy; Lysosome – Break Down Components; Ribosome – Store Water
Mitochondrion – Generate Energy; Lysosome – Break Down Components; Vacuole – Store Water
Ribosome – Generate Energy; Golgi Apparatus – Store Water; Endoplasmic Reticulum – Break Down Components
Mitochondrion – Break Down Components; Vacuole – Generate Energy; Cytoplasm – Store Water
Which statement best describes the functions of both mitochondria and chloroplasts?
They both contain their own DNA and are involved in energy conversions.
They both contain their own RNA and are involved in transcription.
They both contain their own RNA and are involved in storage of nuclear genetic material.
They both contain their own DNA and are involved in controlling the activities of a cell.