Cell - structure and functions Science - Cell - structure and functions

The organelles which provide energy for all activities of a cell are:

Which of the following are prokaryotes?

In a living cell, chromatin is present in:

The structural and functional unit of life called cell was discovered by:

All the living matter in a cell is called:

Fill in the blanks with suitable words:
Cells were first observed in cork by__________________in 1665.

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The smallest unit of life is a __________.

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Cells make up ____________________.

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What is brick to a house is __________To an organism.

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The cytoplasm and nucleus make up the __________________.

Which instrument was essential for the study of cells?

What are the units of inheritance in living organisms?

What is the basic similarity among all the living organism (plants and animals)?

Name the spindle-shaped cells present in the human body.

How is the outside of a plant cell different from that of an animal cell?

What is the function of cell wall in a plant cell?

What is the other name of a nerve cell?

A, B, C and D are the basic part of all the cells. The part A contains threadlike structures called E which transfer the characteristic from parents to their off springs. The part B uses glucose and oxygen to produce energy whereas part C controls the movement of substance into the cell. The part D is a transparent, jelly-like material. What could A, B, C, D and E be?

What are multicellular organisms? Name two multicellular organisms.

X and Y are the two types of cells. The cells X have a well-organized nucleus which is separated from the cytoplasm by the nuclear membrane on the other hand, cells Y do not have a real nucleus, their nuclear material is in direct contact with the cytoplasm.

1. What type of cells are (i) X, and (ii) Y?
2. Give one example each of cells like (i) X, and (ii) Y?

What are pseudopodia in Ameoba? What are the functions of pseudopodia?

State three difference between a plant cell and animal cell?

What is an organ system?

1. Give two examples of organ systems in animals.
2. Name the two main organ systems in plants.

Why could cells not be observed and studied for thousands of years?

The cytoplasm of the cells of a tomato plant contains organelles X having different pigments which impart different colours to the leaves of tomato plants and its fruits.

1. What is the general name of the organelles X?
2. What is the (i) name (ii) colour, and (iii) function, of organelles X present in the leaves of Tomato plant?
3. What is the colour of organells X which are present in the ripe fruits of tomato plant?

Draw the general diagram of a plant cell and label it.

Draw the general diagram of an animal cell and label it.

An Ameoba cell can change its shape and a white blood cell in human blood can also changing its shapes. What is the difference between an Amoeba cell and a white blood cell?

Explain why, chloroplasts are found only in plant cells.

Which of the following are plant organs and which are animal organs?
Brain, Leaf, Lungs, Roots, Stem, Kidneys, Flower, Heart.

State whether the following statements are true or false:
The basic living unit of an organism is organ.

State whether the following statements are true or false:
Muscle cells are branched.

State whether the following statements are true or false:
Amoeba has irregular shape.

State whether the following statements are true or false:
A hen’s egg is a group of cells.