membrane structure
what is the cell membrane made of?
a double layer of phospholipids with proteins.
What is the main characteristic that distinguishes eukaryotic cells from prokaryotic cells?
Eukaryotic cells have a membrane-bound nucleus, while prokaryotic cells do not.
What is the main characteristic of prokaryotic cells?
Prokaryotic cells do not have a membrane-bound nucleus.
What is the function of the nucleus in an animal cell?
The nucleus contains the cell's DNA and controls the cell's activities, including growth and reproduction.
What is the main function of the cell wall in plant cells?
The cell wall provides structural support, protection, and helps maintain the shape of the plant cell.
what do membrane proteins do?
they help with transport and signals.
What is the function of the nucleus in a eukaryotic cell?
The nucleus stores the cell’s genetic material (DNA) and controls the cell's activities, such as growth and reproduction.
What role does the prokaryotic cell wall play in the cell's survival?
the cell wall provides structural support and helps maintain cell shape.
What is the function of the mitochondria in animal cells?
Mitochondria produce ATP through cellular respiration, providing energy for the cell.
What is the role of chloroplasts in plant cells?
Chloroplasts contain chlorophyll and are responsible for photosynthesis, converting light energy into chemical energy (glucose).
What is the main component of the cell membrane?
he main component of the cell membrane is the phospholipid bilayer.
What is the function of ribosomes in a eukaryotic cell?
Ribosomes are responsible for protein synthesis
What is the function of the cell wall in a prokaryotic cell?
The cell wall provides structure, protection, and helps maintain the shape of the cell.
What is the role of mitochondria in animal cells?
Mitochondria generate energy for the cell by producing ATP through cellular respiration.
What role do chloroplasts play in plant cells?
Chloroplasts contain chlorophyll and are responsible for photosynthesis, converting light energy into chemical energy to produce glucose.
What part of the phospholipid molecule is hydrophilic?
The phosphate head of the phospholipid is hydrophilic and faces outward, towards the water.
What is the function of mitochondria in eukaryotic cells?
Eukaryotic cells are cells that contain a nucleus and other membrane-bound organelles.
What is one key difference between prokaryotic and eukaryotic cells?
Prokaryotic cells lack a membrane-bound nucleus, whereas eukaryotic cells have a nucleus.
How do lysosomes contribute to maintaining homeostasis in animal cells?
Lysosomes digest and break down waste materials
What is the primary function of the cell wall in a plant cell?
The cell wall provides structural support, protection, and helps maintain the shape of the plant cell.
what is the role of phospholipids in the membrane ?
They form a barrier that separates the cell from its environment.
What is the function of the mitochondria in eukaryotic cells?
Mitochondria are the powerhouse of the cell, generating ATP through cellular respiration, which provides energy for various cellular processes.
Where is the DNA located in a prokaryotic cell?
The DNA is located in a region called the nucleoid
How does the structure of the plasma membrane support its function in animal cells?
The plasma membrane is made of a phospholipid bilayer with embedded proteins that regulate the movement of substances into and out of the cell
What is the function of the central vacuole in plant cells?
The central vacuole stores water, nutrients, and waste products, and helps maintain turgor pressure to keep the plant cell rigid.