When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as: (2021)
Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells? (2020)
Hence, the correct option is A
NCERT Reference: Page no. 134 of sub-topic “8.5.3.2 Golgi apparatus” of chapter 8 of NCERT
Which of the following statements is not correct? (2019)
Hence, the correct option is A
NCERT Reference: Page no. 134 of sub-topic “8.5.3.3 Lysosomes” of chapter 8 of NCERT
Which of the following is true for nucleolus? (2018)
Hence, the correct option is D
NCERT Reference: Page no. 138 of topic “8.5.10 Nucleus” of chapter 8 of NCERT
Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP? (2017)
Hence, the correct option is C
NCERT Reference: Page no. 135 of topic “8.5.4 Mitochondria” of chapter 8 of NCERT
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 ?
Statement (i):
Statement (ii):
Hence, the correct option is C
NCERT Reference: topics “8.5.4 Mitochondria” and “8.5.5 Plastids” of chapter 8 of NCERT
Microtubules are the constituents of: [2016]
Hence, the correct option is C
NCERT Reference: Page no. 137 of topic “8.5.9 Centrosome and Centrioles” of chapter 8 of NCERT
DNA is not present in : [2015 RS]
Hence, the correct option is A
NCERT Reference: Page no. 136 of topic “8.5.6 Ribosomes” of chapter 8 of NCERT
Nuclear envelope is a derivative of : [2015 RS]
Hence, the correct option is C
NCERT Reference: Page no. 138 of topic “8.5.10 Nucleus” of chapter 8 of NCERT
Select the correct matching in the following pairs: [2015 RS]
Hence, the correct option is A
NCERT Reference: Page no. 133 of sub-topic “8.5.3.1 The Endoplasmic Reticulum (ER)” of chapter 8 of NCERT
Which of the following are not membrane bound? [2015 RS]
Hence, the correct option is A
NCERT Reference: Page no. 136 of topic “8.5.6 Ribosomes” of chapter 8 of NCERT
The function of the gap junction is to [2015 RS]
Hence, the correct option is A
A protoplast is a cell : [2015 RS]
Cellular organelles with membranes are : [2015 RS]
Hence, the correct option is C
NCERT Reference: Topics “8.5.3.3 Lysosomes”, 8.5.3.2 Golgi apparatus”, “ 8.5.4 Mitochondria” of chapter 8 of NCERT
Cell wall is absent in : [2015 RS]
Hence, the correct option is B
NCERT Reference: Page 128 of topic “8.4 PROKARYOTIC CELLS” of chapter 8 of NCERT
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]
Hence, the correct option is B
NCERT Reference: Page no. 136 of topic “8.5.7 Cytoskeleton” of chapter 8 of NCERT
The osmotic expansion of a cell kept in water is chiefly regulated by: [2014]
Hence, the correct option is B
NCERT Reference: Page no. 134 of topic “8.5.3.4 Vacuoles” of chapter 8 of NCERT
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.
Hence, the correct option is A
NCERT Reference: Topics “8.5.9 Centrosome and Centrioles”, “8.5.5 Plastids”, “8.5.4 Mitochondria” and “8.5.6 Ribosomes” of chapter 8 of NCERT
Which structures perform the function of mitochondria in bacteria? [2014]
Hence, the correct option is D
NCERT Reference: Page no. 129 of topic “8.4.1 Cell Envelope and its Modifications” of chapter 8 of NCERT
Which one of the following is not an inclusion body found in prokaryotes ?
Hence, the correct option is C
NCERT Reference: Page no. 129 of topic “8.4.2 Ribosomes and Inclusion Bodies” of chapter 8 of NCERT
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.
Hence, the correct option is B
Which of the following statements is true for a secretory cell?
Hence, the correct option is C
NCERT Reference: Page no. 133 of topic “8.5.3.1 The Endoplasmic Reticulum (ER)” of chapter 8 of NCERT
Match the columns and identify the correct option.
Hence, the correct option is A
NCERT Reference: Topics “8.5.5 Plastids”, “8.5.4 Mitochondria”, “8.5.3.2 Golgi apparatus” and “8.5.10 Nucleus” of chapter 8 of NCERT
Which one of the following cell organelles is enclosed by a single membrane ?
Hence, the correct option is C
NCERT Reference: Page no. 134 of topic “8.5.3.3 Lysosomes” of chapter 8 of NCERT
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