When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as: (2021)
If centromere is situated in the middle of the chromosome, it is called as Metacentric.
Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells? (2020)
Proteins and lipids are formed in the endoplasmic reticulum and some of them are modified to form glycoproteins and glycolipids in the Golgi apparatus.
Enlarged image of Endoplasmic reticulum and golgi apparatus (relation). Only golgi body is given here.
Which of the following statements is not correct? (2019)
So, the correct answer is 'Lysosomes are formed by the process of packaging in the endoplasmic reticulum'
Which of the following is true for nucleolus? (2018)
Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP? (2017)
Mitochondria and chloroplast are [2016]
(a) Semi-autonomous organelles
(b) Formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery
Which one of the following options is correct ?
The same applies to chloroplast as well.
Hence, option C is correct.
Microtubules are the constituents of: [2016]
So, the correct answer is 'Spindle fibers, centrioles, and cilia'.
DNA is not present in : [2015 RS]
Correct Answer is Option A
Nuclear envelope is a derivative of : [2015 RS]
Select the correct matching in the following pairs: [2015 RS]
Which of the following are not membrane bound? [2015 RS]
Ribosomes are the protein factory of a cell. These are non-membranous organelle which attaches on endoplasmic reticulum by transcolon.
The function of the gap junction is to [2015 RS]
A protoplast is a cell : [2015 RS]
Cellular organelles with membranes are : [2015 RS]
Cell wall is absent in : [2015 RS]
The cell wall is the hard protective covering of all plant, fungal and some bacterial cells. Mycoplasma is a genus of bacteria that lack a cell wall and surrounded by their cell membrane only.
Satellite DNA is important because it : [2015 RS]
Image: Chromosomes showing satellite DNA
The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as: [2014]
So, the correct answer is 'Microfilaments'.
The osmotic expansion of a cell kept in water is chiefly regulated by: [2014]
Match the following and select the correct answer: [2014]
1. Centriole: There are two main functions of centrioles
2. Chlorophyll molecules are arranged in and around photosystems that are embedded in the thylakoid membranes of chloroplasts.
3. A crista is a fold in the inner membrane of a mitochondrion.
4. Ribosomes comprise a complex macromolecular machine, found within all living cells, that serves as the site of biological protein synthesis (translation). Ribosomes link amino acids together in the order specified by messenger RNA(mRNA) molecules.
Which structures perform the function of mitochondria in bacteria? [2014]
Which one of the following is not an inclusion body found in prokaryotes ?
The term cell was given by
In a 1665 publication called Micrographia, experimental scientist Robert Hooke coined the term “cell” for the box-like structures he observed when viewing cork tissue through a lens.
Which of the following statements is true for a secretory cell?
RER is frequently observed in the cells actively involved in protein synthesis and secretion. RER is well developed in cells engaged in synthesis of secretory products.
Match the columns and identify the correct option.
A → (iii),
Thylakoids: Any of the membranous disks of lamellae within plant chloroplasts that are composed of protein and lipid and are the sites of the photochemical reactions of photosynthesis.
B → (iv),
Cristae: Cristae are the sub-compartments of the inner membrane of the mitochondria which throws itself into many folds. These structures are known to increase the surface area that is available, in order to promote the productivity of cellular respiration.
C → (i),
Cisternae: The flattened membrane disk containing fluid, such as those occurring in the Golgi apparatus and the endoplasmic reticulum
D → (ii),
Chromatin: Chromatin is a substance within a chromosome consisting of DNA and protein.
Which one of the following cell organelles is enclosed by a single membrane ?
Lysosomes are enclosed by a single membrane while Mitochondria, Chloroplasts and Nuclei are enclosed by double membrane.
Use Code STAYHOME200 and get INR 200 additional OFF
|
Use Coupon Code |
![]() |
![]() |
|
![]() |
![]() |
|
|
|
|
|
|