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iren2701 [21]
3 years ago
9

Define cell theory for class 9 plz answer

Biology
1 answer:
kirill115 [55]3 years ago
6 0

Answer:

A theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the sum of those of its cells.

Explanation:

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All tissues within a plant are capable of photosynthesis as all plant cells contain
Lena [83]
Foss – all tissues within a plant are capable of force it says it’s all plant cells contain chloroplasts
4 0
2 years ago
In a farming accident last year, kevin injured his right cerebral hemisphere. this injury may impair kevin's ability to:
Crank
The injury to Kevin’s right cerebral hemisphere could affect the strength and movement on the left side of his body, as the right half of the brain controls the left side and vice versa. Reasoning, attention, perception, social communication and memory are also controlled by the right side of the brain and these functions could also be impaired from an injury to his right cerebral hemisphere.
3 0
3 years ago
Do Different cell types also have special duties, like building skin or bone, pumping out hormones, or making anti-bodies.
Schach [20]

Answer:

Yes, different cell types also have special duties, like building skin or bone, pumping out hormones, or making anti-bodies.

Explanation:

Cell is the basis structural and functional unit of a living organism. The body of a human is composed of trillions of cells that are organized in around 200 types of cells.

<u>A tissue is simply a group of specific kind of cell that have  a specific role.</u>

  • For example: The nervous system contains cells called neurons that have ability to transmit message from one place to another and allow us to respond to any environmental stimuli, such as heat, cold, danger etc.
  • Skin cell is composed of cells that have a role in protecting the body against the attack of harmful microbes. They also protect have role in building new skin cells and adding the protection to our body.
  • Blood cells have a role in providing us immunity (for example white blood cells) therefore, make us better able to protect ourselves from danger of diseases.
  • Muscle cells help us in moving our organs as well as allowing the whole movement from one place to another.

Thus we see that different types of cells have special functions and all these different cells coordinate with each other to make an organized and functioning body of a living organism.


Hope it help!

7 0
3 years ago
In which phase do homologous chromosomes migrate to towards the metaphase phase?
shtirl [24]
C Chromosomes break at centromeres,and sister chromatids move to opposite ends of the cell.
4 0
3 years ago
how do levels of thermal energy and speed differ between low and high friction surfaces? how does this difference relate to a tr
MariettaO [177]

- "This energy is usually in the form of low-level thermal energy. It is only possible to extract work when there is a temperature difference, so low-level thermal velocity; this means that the force of friction and the applied force are equal in magnitude."

- "An energy transformation is the change of energy from one form to another. Energy transformations occur everywhere every second of the day. There are many different forms of energy such as electrical, thermal, nuclear, mechanical, electromagnetic, sound, and chemical."

5 0
3 years ago
Read 2 more answers
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