Advertisements
Advertisements
प्रश्न
Describe the structure of the chromosome in brief.
Advertisements
उत्तर
Chromosomes are rod-shaped structures made of protein and DNA. A chromosome is composed of two identical c Chromat ids attached by a centromere. Each chromatid is made up of tightly wound DNA wrapped around histones.
structure of chromosome
APPEARS IN
संबंधित प्रश्न
Which one of the following is found both in the cells of a mango plant and a monkey?
Name the part of the cell concerned with the following :
The entry of only certain substances into and out of the cell.
What is the cell theory? Who propounded it and when?
Try to find the names of four cell organells hidden in this maze, (hint: The hidden words can appear horizontally or vertically; forwards or backward or even mixed up). Write them in the lines provided. For example : “NUCLEUS” in the last row, seven backward letters.
| A | J | F | B | H | E | M | O | E | L | O | U | C | A | V |
| H | V | L | E | U | C | O | P | L | A | S | T | N | O | E |
| C | H | R | O | M | O | P | L | A | S | T | X | T | E | R |
| S | U | E | L | C | U | N | W | P | L | A | S | T | I | D |
Write true or false for each statement. Rewrite the false statements correctly:
The size of a cell is usually measured in centimetres
What was the contribution of the following to our knowledge of cells?
Schleiden
Which is the longest human cell?
the question has four options. Choose the correct answer:
The cell was discovered by
Write about the contribution of Robert Hooke in cell biology.
Matching:
| 1. | Discovery of cell | a. | Nerve cell |
| 2. | Unicellular organism | b. | spirogyra |
| 3. | Multicellular organism | c. | Robert Hooke |
| 4. | Longest cell | d. | Cyanobacteria |
| 5. | Prokaryotic cell | e. | Amoeba |
