Cell and Cell Organelles Science - Cell and Cell Organelles

Leaves are green because of me.

I am chemical factory of the cell.

I support the cell, but I am not cell wall. I have a body resembling net.

I am single-layered but maintain cellular osmotic pressure.

I am ATP producing factory.

Ripe tomatoes appear red.

What type of work is done by National Centre for Cell Science?

Which staining technique was developed by Camilio Golgi? Where was this technique used?

What are the inclusions in the stroma of chloroplasts?

Write the examples of plant pigments.

Functions of : Nucleus.

Functions of : Vacuole.

Functions of : Lysosome.

Functions of : Cytoplasm.

Functions of : Plasma membrane.

……………. compound ATP is produced in the mitochondria.

……………….. is the secretory organ of the cell.

During starvation, ………………… digest stored proteins, fats.

……………. has ribosome granules on its outer surface.

An …………… is a specialized subunit having specific function within the cell.

What Would happened if Plants lacked anthocyanin.

What Would happened if Plasma membrane had not been selectively permeable.

What Would happened if Genes had been absent on the chromosomes.

What Would happened if There had been no difference between mitochondria and plastids.

What Would happened if RBCs had mitochondria.

Sketch the diagrams to show how osmosis occurs in animal cell if kept separately in isotonic, hypotonic and hypertonic medium

Sketch the diagrams to show how osmosis occurs in plant cell if kept separately in isotonic, hypotonic and hypertonic medium.

Structure of the cell:

Sketch the diagrams to show how osmosis occurs in animal cell if kept separately in isotonic, hypotonic and hypertonic medium

Can you recall? Observe the cells of onion peel under the microscope. Have you seen the fully turgid, rectangular cells of onion peelings?

Experiment Activity – Take out a thin peel of Rheo or Croton leaf and observe the chromoplasts under the compound microscope.

Experiment Activity – Take a drop of water on a clean glass slide. Using an ice-cream spoon, gently scrap the inner surface of your cheek. With a needle, transfer a little material from spoon to the water drop on the slide and spread it evenly. Put a drop of methylene blue stain on the smear. Put a cover slip and observe under microscope. Did you observe the cells with blue nucleus?

Wooden doors fit very tightly in rainy season. Why does it happen?

Keep 4 – 5 raisins in water and observe after an hour. Afterward, keep the same raisins in sugar solution and observe after an hour. Note down the observations and discuss in the classroom.

Nucleolus, Genes, Chromosomes, Ribosomes

Lignin, Suberin, Cutin, Iodine

Demolition squads, Suicide Bags, Immune system, Powerhouse of the cell.

DNA, Ribosomes, Chlorophyll

Nucleolus, mitochondria, plastids, endoplasmic reticulum

Lysosome produces vacuoles and secretory vesicles.

Raisins kept in water shrink after an hour.

If fruit pieces are kept in thick saturated sugar solution, the water from fruit pieces enter the sugar solution resulting into their swelling.

Vacuole is bound by double membrane.

In mitochondria, the inner membrane is porous and the outer membrane is deeply folded.

Plant cell and animal cell

Prokaryotic and eukaryotic cell:

Ripe tomatoes appear red.

Vacuoles do not have any typical size or shape.

Plant cells have less mitochondria than those of animal cells.

The nucleus of the sieve tubes of the plant phloem is lost.

The fruit pieces kept in sugar syrup show shrinking.