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Biology - Class 12

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what is cell and structure and part

Prachi Panda 8th Apr, 2022

Hello,

A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of miniscule but distinct structures called organelles. Each cellular organelle has a specific function. Some parts of a

36 Views

polygenic inheritance define the terms

AVINASH KUMAR 21st Feb, 2022

Dear aspirant hope you are doing well..

Polygenic inheritance occurs when one characteristic is controlled by two or more genes. Often the genes are large in quantity but small in effect. Examples of human polygenic inheritance are height, skin color, eye color and weight.

For more details read the given

84 Views

Y chromosome is less active why

Preetam Bhowmik 5th Dec, 2021

Dear Aspirant, since Y-chromosome possesses small amount of euchromatin that contains DNA or genes, therefore it is genetically less active. Recent research has shown that the Y chromosome has developed some pretty convincing mechanisms to "put the brakes on", slowing the rate of gene loss to a possible standstill. I

97 Views

IN Ginger vegetative propagation occurs through

Anirudh Singh 5th Sep, 2021

Hi.

Vegetative propagation in Ginger occurs through Rhizome and rhizome is a thickened, underground, dorsiventral stem that grows horizontally at a particular depth within the soil. It is brown in colour and shows cymose branching. It can be distinguished from the modified root by the presence of nodes, internodes, terminal

764 Views

During embryogenesis the type of cell division that occur is ....

puneetpotter 16th Jul, 2021

Hello there!

Mitosis is observed during cell division in embryonic development stage...The zygote initially divides to form a 2-celled embryo. Then each of these cells undergoes mitosis and divides, bringing the number of cells to 4.


Hope this helps, good luck!

37 Views

When there is a cut outside the body, platelet formation occurs. In the case of internal haemorrhage is there also the formation of platelets? How do the internal haemorrhage get repaired..I mean .. can anyone pl elaborate on the process of healing of internal haemorrhage except the surgery option ?

Niranjana 29th Jun, 2021

Hello,

Rest and hydration are usually used to treat small or mild haemorrhages. Typically, a clot forms, which temporarily stops bleeding while the blood artery heals. The extra blood will be absorbed by the surrounding body tissues over time.

Doctors have lately begun to inject extremely large dosages of clotting-stimulating

393 Views

how many and which questions were repeated in neet 2020?

chandni deb 28th Jun, 2021

Dear Aspirant,

the repeated questions for NEET examinations are generally in most cases low, as the level of competition is very high. In most cases similar kinds of questions are asked instead of repeating the same question. However, there are a few times where a question or two are repeated

64 Views

please tell me about structure of cell

prasanna raghupatruni 10th Jun, 2021

Hello,

Structure of cell:

The cell is the structural and functional unit of life, which is also known as "Building blocks of life". A cell consists of three parts. They are, the cell membrane, the nucleus and the cytoplasm which is present in between the cell and the nucleus.

Cell

540 Views

How many percentage are required in 12th class to become a lecturer ?

Sharon Rose Student Expert 27th Feb, 2021

Hello,

To become a lecturer the minimum education qualification requirement is Master's degree in a relevant field of the subject you want to teach. To pursue Master's degree you must have passed bachelor's degree in a relevant field after passing 10+2. Now, to pursue bachelor's degree you must have passed

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