Question

WORKSHEET
Question 1.
Plasma membrane is made up of which two components?
Answer:

Question 2.
What is hypotonic solution?
Answer:
Question 3.
What is hypertonic solution?
Answer:

Question 4.
What is isotonic solution?
Answer:

Question 5.
Cell wall is made up of which component?
Answer:

Question 6.
Give an example of unicellular organism.
Answer:

Question 7.
What is active transport?
Answer:

Question 8.
What is the intracellular source of digestive enzyme?
Answer:

Question 9.
What is endocytosis?
Answer:

Question 10.
Where are genes located?
Answer:

Question 11.
Name two structures found in plant cells but not in animal cells.
Answer:

Question 12.
Name two structures found in animal cells but not in plant cells.
Answer:

Question 13.
Which organelle is involved in the formation of lysosomes?
Answer:


Question 14.
Which organelle is the storage sac of solid and liquid materials?
Answer:

Question 15.
Which organelle serves as a channel for transport of materials between cytoplasm and nucleus?
Answer:​

Answer 1

Answer:

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Explanation:

Q1) Like all other cellular membranes, the plasma membrane consists of both lipids and proteins. The fundamental structure of the membrane is the phospholipid bilayer, which forms a stable barrier between two aqueous compartments.

Q2)A hypotonic solution has a lower concentration of solutes than another solution. In biology, a solution outside of a cell is called hypotonic if it has a lower concentration of solutes relative to the cytosol. Due to osmotic pressure, water diffuses into the cell, and the cell often appears turgid, or bloated.

Q3) Tonicity is a measure of the effective osmotic pressure gradient; the water potential of two solutions separated by a semipermeable cell membrane. In other words, tonicity is the relative concentration of solutes dissolved in solution which determine the direction and extent of diffusion.

Q4) A solution that has the same salt concentration as cells and blood. Isotonic solutions are commonly used as intravenously infused fluids in hospitalized patients.

Q5) Plant cell walls are primarily made of cellulose, which is the most abundant macromolecule on Earth. Cellulose fibers are long, linear polymers of hundreds of glucose molecules. These fibers aggregate into bundles of about 40, which are called microfibrils.

Q6) Paramecium caudatum

Q7) In cellular biology, active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement.

Q8) The "intracellular source" of "digestive enzyme" are the Lysosomes. Lysosomes are certain membrane bound cell organelles that contain various essential digestive enzymes that are important to break down the proteins, carbohydrates, lipids and various other complex polymers.

Q9) Endocytosis is a cellular process in which substances are brought into the cell. The material to be internalized is surrounded by an area of cell membrane, which then buds off inside the cell to form a vesicle containing the ingested material. Endocytosis includes pinocytosis and phagocytosis

Q10) Genes are found on tiny spaghetti-like structures called chromosomes (say: KRO-moh-somes). And chromosomes are found inside cells. Your body is made of billions of cells. Cells are the very small units that make up all living things.

Q11) The plant cell has a cell wall, chloroplasts, plastids, and a central vacuole—structures not found in animal cells. Plant cells do not have lysosomes or centrosomes.

Q12) Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.

Q13) The formation of lysosomes involves both the endoplasmic reticulum and the golgi apparatus. - Enzymes of the lysosomes are synthesized from the proteins of the rough endoplasmic reticulum.

Q14) Vacuoles are the storage sacs of the cell, for both solid and liquid substances.

Q15) Endoplasmic reticulum serves as channels for the transport of materials between various regions of the cytoplasm or between the cytoplasm and the nucleus.

Answer 2

Explanation:

1.plasma membrane consists of both lipids and proteins.

2.If the medium surrounding the cell has a higher water concentration than the cell, i.e., if the solution is very dilute solution, then the cell will gain water by osmosis. Such dilute solution is called Hypotonic solution.

3.If the medium surrounding the cell has a lower water concentration than inside the cell, i.e., if the solution is highly concentrated, then the cell will lose water through osmosis. Such concentrated solution is called Hypertonic solution.

4.If the medium surrounding the cell is of exactly the same water concentration as inside the cell, there will be no net movement of water across membrane resulting in no change in size of cell. Such solution is called Isotonic solution.

5.Cell wall is made up of cellulose.

6.Paramecium.

7.active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration against the concentration gradient. Active transport requires cellular energy to achieve this movement.

8.Lysosome are the intracellular source of digestive enzyme.

9.Endocytosis is the process of ingestion of materials by the cells through the plasma membrane.

10.In the Nucleus. Genes are the units of heredity that are passed on from the parents to the offsprings, they determine characteristics of the offspring. They are a distinct sequence of nucleotides that form a part of a chromosome.

11.Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.

12.Animal cells each have a centrosome and lysosomes, whereas plant cells do not.

13.The formation of lysosomes involves both the endoplasmic reticulum and the golgi apparatus. - Enzymes of the lysosomes are synthesized from the proteins of the rough endoplasmic reticulum.

14.Vacuoles are the storage sacs of the cell, for both solid and liquid substances.

15.Endoplasmic reticulum serves as channels for the transport of materials between various regions of the cytoplasm or between the cytoplasm and the nucleus.