PYQSide ExamsMy practice

Cell: The Unit of Life · Question 99

AIPMT 2010 (Prelims)MCQEasy📈 Topic in 25% papers+4−1
1

The plasma membrane consists mainly of –

  1. proteins embedded in a carbohydrate bilayer
  2. phospholipids embedded in a protein bilayer
  3. proteins embedded in a phospholipid bilayer
  4. proteins embedded in a polymer of glucose molecules

Answer

(3) proteins embedded in a phospholipid bilayer

Solution

As per NCERT, the cell membrane is composed of lipids (mainly phospholipids) arranged in a bilayer, with proteins.

According to the fluid mosaic model (Singer and Nicolson, 1972), the quasi-fluid lipid bilayer has proteins embedded in it (integral proteins) or on its surface (peripheral proteins).

∴ The plasma membrane consists mainly of proteins embedded in a phospholipid bilayer.

Answer: (3)

AIPMT 2010 (Prelims)

Keep practising — Cell: The Unit of Life

2

The main area of various types of activities of a cell is –

  1. Cytoplasm
  2. Plasma membrane
  3. Nucleus
  4. Mitochondrion
AIPMT 2010 (Prelims)
3

Which one of the following has its own DNA?

  1. Dictyosome
  2. Mitochondria
  3. Peroxisome
  4. Lysosome
AIPMT 2010 (Prelims)
4

Which one of the following structures between two adjacent cells is an effective transport pathway?

  1. Endoplasmic reticulum
  2. Plasmodesmata
  3. Plasmalemma
  4. Plastoquinones
AIPMT 2010 (Prelims)
5

Middle lamella is composed mainly of :

  1. Calcium pectate
  2. Phosphoglycerides
  3. Muramic acid
  4. Hemicellulose
AIPMT 2009
6

Cytoskeleton is made up of :

  1. Cellulose microfibrils
  2. Proteinaceous filaments
  3. Calcium carbonate granules
  4. Callose deposits
AIPMT 2009
7

Plasmodesmata are :

  1. Locomotory structures
  2. Connection between adjacent cells
  3. Membranes connecting the nucleus with plasmalemma
  4. Lignified cemented layers between cells
AIPMT 2009
8

Polysome is formed by

  1. several ribosomes attached to a single mRNA
  2. many ribosomes attached to a strand of endoplasmic reticulum
  3. a ribosome with several subunits
  4. ribosomes attached to each other in a linear arrangement
AIPMT 2008
9

In germinating seeds fatty acids are degraded exclusively in the:

  1. proplastids
  2. peroxisomes
  3. glyoxysomes
  4. mitochondria
AIPMT 2008
10

Vacuole in a plant cell:

  1. is membrane-bound and contains storage proteins and lipids
  2. is membrane-bound and contains water and excretory substances
  3. lacks membrane and contains air
  4. lacks membrane and contains water and excretory substances
AIPMT 2008
11

The two sub-units of ribosome remain united at a critical ion level of:

  1. magnesium
  2. manganese
  3. calcium
  4. copper
AIPMT 2008

All Cell: The Unit of Life PYQs →

PDFDownload Cell: The Unit of Life PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)