NEET biology

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Question
CBSEENBI11025363

Write two functions of juxtaglomerular apparatus.

Solution

The juxtaglomerular apparatus is a specialized structure formed by the distal convoluted tubule and the glomerular afferent arteriole. Functions:-

  1. These cells secrete the enzyme renin that modulates the blood pressure.
  2. Renin also helps stimulation of the beta- 1 adrenergic receptor.

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Question
CBSEENBI11025364

State two differences between red and white muscles.

Solution

Red Muscles White Muscles
Have more mitochondria Have less mitochondria
Presence of myoglobin. Absence of myoglobin.
Have slow rate of contraction.  Have fast rate of contraction.

Question
CBSEENBI11025365

What is the difference between pinocytosis and phagocytosis?

Solution

Pinocytosis is the process where substance is directly ingested as it is in dissolved form and ready for cellular absorption. It is done by the process of invagination.

Phagocytosis is the process where particles are broken down into simpler substance with the help of enzymes for absorption. It is mainly done by pseudopodia.

Question
CBSEENBI11025366

State four important functions of plasma membrane.

Solution

  1. Plasma membrane is protective in nature.
  2. Active and passive transport of material takes place through it.
  3. Variety of cell processes such as cell signalling, cell adhesion takes place.
  4. It is site of electron transparent system in prokaryotes.

Question
CBSEENBI11025367

Write down the scientific name of China rose plant. Give its floral formula.

Solution

Scientific name of China rose:- Hibiscus rosa sinensis

Family:- Malvaceae

Floral Formula:- BrEpi3-9 K(5) C5A G(5 - )