Question

Explain the functions and structure of Golgi bodies.

b. What is nucleoid?

c. What is the difference between plant cells and animal cells?

d. What are suicidal bags (lysosomes)?

e. What is the function of chromosomes?

37 Calculate the number of aluminium ions present in 0.051 g of aluminium oxide​

Answer 1

Answer:

whatis mean by aluminium

Explanation:

I cant understand

Answer 2

Answer:

b.The nucleoid is an irregularly shaped region within the prokaryotic cell that contains all or most of the genetic material. The chromosome of a prokaryote is circular, and its length is very large compared to the cell dimensions needing it to be compacted in order to fit.

c. A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.

d. when cell gets damaged, lysosome may burst and the enzymes digest their own cell. Therefore lysosomes are known as the Suicidal bags of a cell or we can say that they posses different kind of hydrolases on release of these enzymes that cause death of cell.

e. The function of chromosomes:

Chromosomes facilitate proper cell division and replication. The main function of the chromosome is to fit the DNA inside the nucleus. As we all know, that our DNA is too long, if we unwind all the DNA of a cell, it is up to 2 meters in length.

f. (Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u) .

Solution:

Mole of aluminium oxide (Al2O3) = 2 x 27 + 3 x 16

= 102 g

i.e., 102 g of Al2O3= 6.022 x 1023 molecules of Al2O3

Then, 0.051 g of Al2O3 contains = 6.022 x 1023 / 102 x 0.051 molecules

= 3.011 x 1020 molecules of Al2O3

The number of aluminium ions (Al3+) present in one molecule of aluminium oxide is 2.

Explaintion:

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