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Cell Biology Quiz-07

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NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced. .

Q1.   Which one of the following is the correct labelling of given structure of Golgi apparatus?

  •  A-Cisternae, B-Vesicle, C-cis face, D-trans face
  •  A-Cisternae, B-Vesicle, C-trans face, D-cis face
  •  A-Tubules, B-Vesicle, C-trans face, D-cis face
  •  A-Vesicle, B-Cisternae, C-cis face, D-trans face
Solution
(b) A-Cisternae, B-Vesicle, C-trans face and D-cis face

Q2.   Golgi body arises from
  •  Plasma membrane
  •  ER
  •  Vacuole
  •  Chloroplast
Solution
(b) There are many views regarding the origin of Golgi body. Some workers considered that Golgi body has originated from plasma membrane or from nuclear envelope. But most of the workers believe that Golgi body is originated from ER, particularly from the rough ER by the loss of ribosomes.

Q3.   The transport of metabolities across the biomembrane occurs through
  •  Passive transport
  •  Active transport
  •  In case of bacteria, plasma membrane forms extensions to form special membranous structure called mesosomes
  •  All of the above
Solution
(d) Transport of metabolites across the biomembrane occurs through (i) Passive Transport Transport of molecules across plasma membrane along the concentration gradient This could occur through simple diffusion or through facilitate diffusion (with the aid of some carriers of channels) (ii) Active Transport Movement of molecules against the concentration gradient with the help of energy (ATP) (iii) In case of bacteria, plasma membrane forms the extensions to form special membranous structures called mesosomes It plays an important role in respiration. In some prokaryotes, like cyanobacteria, membrane extension froms chromatophores, which contains pigments
Q4.   Read the following statements and identify the correct option given.
I. In prokaryotic cell, the nuclear membrane, chloroplast, mitochondria,microtubules and different kinds of pili are absent.
II. In eukaryotic cell, the nuclear membrane, chloroplast, mitochondria and pili are present.
III. In prokaryotic cell, the ribosome is of 70 S type and in mitochondria of eukaryotic animal cell, the ribosome is 80 S type
  •   I and II are wrong; III is correct
  •  I is correct; II and III are wrong
  •  I and III are correct; III is wrong
  •  I, II and III are wrong
Solution
(d) Prokaryotes are generally smaller and differ from eukaryotic cells in terms of structural elements and genetic processes, e.g., bacteria, blue-green algae, mycoplasma, etc. Unlike eukaryotes, prokaryotes lack a true nucleus, a nuclear membrane and the membrane bound organelles (mitochondria, chloroplast, Golgi bodies, ER). Ribosomes are 70 S type in prokaryotes, while it is 80 S in eukaryotes although 70 S type of ribosomes are found in mitochondria and chloroplast of eukaryotic cell.

Q5.   Secondary cell wall grows by
  •  Deamination
  •  Calcicole
  •  Apposition
  •  None of these
Solution
  (c) Secondary cell wall grows by apposition. In this method, new cell wall material secreted by protoplasm is deposited as definite thin plates one after the other on the inner surface of original wall.

Q6.   Which of the following statements are correct for eukaryotic cells? I. Two envelope organisation
II. The flagella if present, are 11 stranded with differentiation of axonema and sheath
III. Organised nucleus
IV. Cell wall without muramic acid
Choose the correct option
  •  I and II
  •  I and III
  •  Only IV
  •  I, II, III and IV
Solution
(d) All are correct

Q7.   Condensation product of adenine, ribose and phosphoric acid is named as
  •  Adenosine
  •  Adenylic acid
  •  Adenine phosphate
  •  None of these
Solution
(b) Adenine+Ribose → Adenosine Adenosine+H_3 PO_4 → Adenylic acid (Adenosine monophosphate).

Q8.   Material of the nucleus is stained by
  •  Acidic dye
  •  Basic dye
  •  Neutral dye
  •  Iodine
Solution
(b) Due to the presence of basic histone proteins, nucleus is stained by the basic dyes

Q9.   Out of the given cell organelles, which does not possess DNA?
  •  Peroxisome
  •  Chloroplast
  •  Mitochondria
  •  Nucleus
Solution
(a) Peroxisome does not contain DNA.

Q10.   In a DNA segment having six coils, there are 22 nitrogen base pair linked by two hydrogen bonds. How many cytosine bases are found in that segment?
  •  22
  •  38
  •  44
  •  76
Solution
(b) One coil of DNA has 10 base pairs hence, the six coils contain 60 base pairs. The nitrogen base pairs linked by two hydrogen bonds are 22. Hence, the nitrogen base pair with three hydrogen bonds, i.e., G=C will be 60-22=38.

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Best IIT JEE Coaching Institute in Delhi | NEET Coaching Institute in Delhi: Cell Biology Quiz-07
Cell Biology Quiz-07
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