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What would happen if the membrane did not allow water or solute particles pass through it?
The cell wouldn't diffuse.
What surrounds a plant cell and protects it?
The thin structure that surrounds the cytoplasm of a cell is called as cell membrane. This is present in most plant, animal and fungi cells. It is a selectively permeable structure and allows the flow of ions and particles from the inside of the cell to the outside and vice-versa. However plant cells, in addition to the cell membrane also have the cell wall outside the cell membrane. This provides mechanical rigidity to the cell and prevents the flow of larger particles.
How does a vacuole assist in homeostasis?
A vacoule is the excretory organelle of the cell. It regulates the turgidity of the cell by regulating the amount of water inside the cell. The vacoule always has some amount of water present inside it. If the cell contains more water, it absorbs the water and allows it to diffuse out of the cell. If the cell contains less water, the water from the vacoule will re-enter the cell to maintain its turgidity.
What does the Mitochondrion do in a plant cell?
The mitochondrion in a plant cell is responsible for producing energy in the form of ATP through the process of aerobic respiration. It is involved in breaking down sugars and other organic molecules to generate the energy needed for cellular activities.
Why is the vacuole important to the plant cell?
In plants, the vacuole stores food, water, and enzymes, and absorbs the waste products in the cell. In animal cells, smaller vacuoles are used to transport lipids and proteins out of the cell.
How do water salts and sugars keep a blood cell from swelling?
The water salts and sugars will match the water concentration within the blood cell, therefore water does not enter or leave the cell, resulting in the cell not swelling.
Is the cell membrane permitable to everything?
Not everything, no. It depends on the cell, some cell membranes are permeable to water (called osmosis) but not smaller particles like proteins. Whereas, some are permeable to proteins and other small particles but not to larger particles.
stores water, salts?
A vacuole is a membrane-bound sac that contains water and other substances. You can think of it as the refrigerator of the cell because it stores salts, carbohydrates, sugars, and water.
Why would a fresh water cell expand and explode in salt water?
The cell absorbs water through its semipermeable membrane in order to make the ratio of salt particles to water particles equal in the cell and outside the cell. However, the increase in water in the cell makes it explode.
What are the Contributions of vacuoles for the cell?
turgidity, stores sugars/water soluble products
What does it mean for a cell to be selectively permeable Why does a cell have to do this?
semi permeable means the cell chooses what comes into it, they have this so they can let food particles and water in but not large items or other cells
What type of particles does osmosis transport into and out of the cell?
water
What is the water substance called in a cell and what does it contain?
cytoplasm, containing 90% water, ions, sugars, amino acids, and ATP.
Why is water crucial for photosynthesis?
Without water the vacuoles in the plant cell would not be able to produce necessary sugars and starches.
Why can't photosynthesis make sugars when a cell is given sunlight or water?
Photosynthesis requires sunlight, water, and carbon dioxide.
What is the process by which tiny particles can pass through the cell membrane?
Small particles can pass through the cell membrane by simple diffusion. If the particles are water, the process is given a special name: osmosis.
What do bacterioplankton eat?
Bacterioplankton primarily consume dissolved organic matter, which consists of organic molecules such as sugars, amino acids, and fatty acids. They also feed on detritus, dead organisms, and other organic particles in the water column. Additionally, bacterioplankton can engage in symbiotic relationships with other organisms for nutrition.
