Question

Answer any five of the following.
a) What is endoplasmic reticulum? Write the names of types of it.
b) Draw well labelled diagram of blood capillaries.
c) Add a note on human blood groups.
d) Write properties of acids.
e) Write the names of following chemical formulae.
j) NaOH
ii) H2SO4
iii) Mg(OH)2
) How sound is produced in human being?
g) Write the names of types of thermoplastic type of plastic.​

Answer 1

Answer:

e) NaOH- Sodium hydroxide

H2SO4- sulphuric acid

Mg(OH)2- magnesium hydroxide

Answer 2

Answer:

a The endoplasmic reticulum is a type of organelle. It's a collection of tubes that make, package, and transport proteins and fats. The endoplasmic reticulum is a team player. It works with other organelles, including ribosomes, the Golgi apparatus and the nucleus.

→ endoplasmic reticulum is two types

1. RER {rough endoplasmic reticulum}

2.SER {smooth endoplasmic reticulum}

D..acids are sour in taste..

H ² ion is common in all acid..

Acids change the color of certain acid-base indicators. ... and etc..

e. i.sodium hydroxide

ii.sulphuric acid

iii.magnesium hydroxide

f.The vocal folds produce sound when they come together and then vibrate as air passes through them during exhalation of air from the lungs. This vibration produces the sound wave for your voice. In order for the sound to be clear and not raspy or hoarse, the vocal folds must vibrate together symmetrically and regularly....

b. refer the above attachment..↑↑↑

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