Question

1)distinguish between prokaryotic and eukaryotic cell?
2)write down difference between organ and organellle?
3)write down difference b/w nucleus and nucleoid?
4)mention difference between light microscope and electron microscope?
5)give a brief account of discovery of the cell?
6)describe the proteins of plasma membrane ?
7)enumerate functions of plasma membrane ?
8)give an example of diffussion across plasma membrane?
9)set up an experiment to demonstrate osmosis?
10)write down the difference between diffusion and osmosis?
11)write a note on endocytosis?
12)what would happen when eukaryotic cells are placed in hypotonic , hypertonic and isotonic solutions?

13)name the following:-
(a)smallest cell organelle
(b)largest cell organelle;
(c)ER studded with ribosomes
(d)functoinal segments with the DNA molecules

14)distinguish between the following:-
(a)chromoplast and chloroplast
(b)ribosome and centrosome

15)write main differences between plant cell and animal cells.
16)what will happen in a cell if its nucleus is removed?give reasons in support of your answer.
17)explain why do spinach look green, papaya yellow and edible part of watermelon red?

18)write down two main functions of:-
(a)ER
(b)lysosome

19)name the following:-
(a)the cell organelle which synthesize protein.
(b)the type of plastids which store food.

20)"lysosomes are known as sucide bags".why?

21)define the following terms :
(a)cell inclusion
(b)cytosal
(c)protoplasm
(d)nucleoplasm

22)where do the ribosome get synthesized?

23)write short notes on :-
(a)mitochondria;
(b)plastids

24)write names of cell organelle.
25)what are three main functional regions ofbthe cell?

26)what is the location of the following in the cell:-
(a)chromatin
(b)chromosome
(c)tonoplast
(d)nucleolus

27)what are the genes?where are they located in the cell?
28)lysosomes are also called digestive bags.why?
29)which organelle is the " power plant " of eukaryotic cell .write in brief its functions.
30)what are centrioles?write about their function.
31)where do lipids and proteins constituting the plasma membrane get synthesised?
32)draw a well labelled diagram of typical prokaryotic cell?
33)what does the term plasmolysed mean when used to describe a cell?

Answer 1

1.Organelles are the biggest difference between bacteria and cells that make up the human body. ... Eukaryotic cells contain membrane-bound organelles, including a nucleus. Eukaryotes can be single-celled or multi-celled, such as you, me, plants, fungi, and insects. Bacteria are an example of prokaryotes.

2.Organelles function to keep a cell alive while organs perform functions to keep an organism alive [multicellular organisms]. Organs are are made up of tissues and tissue are further made up of cells, and as we know cells are alive due to organelles.

3.The word nucleus means kernel or core, and it comes from an Ancient Greek word meaning nut. As a general rule, the nucleus is so critical that the surrounding structure cannot survive without it. Nucleus is a membrane-enclosed organelle found in eukaryotic cells

4.An electron microscope is a microscope that uses beams of electrons instead of rays of visible light to form highly magnified images of tiny areas materials or biological specimens. Comparing light vs electron microscopes is made more complicated by the fact that there are different types of electron microscopes.

5.The cell was first discovered by Robert Hooke in 1665, which can be found to be described in his book Micrographia. In this book, he gave 60 'observations' in detail of various objects under a coarse, compound microscope. ... Hooke discovered a multitude of tiny pores that he named "cells".

6.Integral membrane proteins, also called intrinsic proteins, have one or more segments that are embedded in the phospholipid bilayer. Most integral proteins contain residues with hydrophobic side chains that interact with fatty acyl groups of the membrane phospholipids, thus anchoring the protein to the membrane.

7.