UNIT#04 CELL STRUCTURE AND FUNCTION Flashcards
Cell theory is not applicable to;
Viruses
What would be the resolving power of the objective length in a microscope, if the eyepiece is o 10X and the total magnification is 40X?
4X
The human naked eye can differentiate between two points which are how much apart?
0.1mm
What is the correct sequence of steps in cell fractionation?
Separation, Homogenization, Centrifugation
Robert Hooke was the first person to see cells in:
Cork
Micrographia is a famous publication of;
Robert Hooke
The presence in the nucleas was reported by:
Robert Brown
Cell theory was finally formulated by:
Schleiden and Schwann
The concept “OMNIS cellula-e-cellula” means that new cells are formed from:
Pre-existing cells
A cell consists of basic components:
➡Plasma membrane
➡Centrioles
➡Nucleas
Which of the ____ cells store surplus food?
Parenchymatous
Plant cells are distinguishable from animal cells containing:
Cell wall
Out of the given options, choose the one which shows the structures found only in plants:
Chloroplast, Microtubules, Peroxisomes
Pick the correct reference to plant cell
➡Mitochondria:✅
➡Peroxisome:✅
➡Centrioles:❌
Which features do animal cells share with plant cells?
➡Chloroplast:❌
➡Cytoplasm:✅
➡Nucleas:✅
➡Mitochondria:✅
The layers of cellulosic fibres in the cell wall are arranged with each other at:
Horizontal angle
Which of the following is related to the prokaryotic cell wall?
Sacculus
(polysaccharide chains forming peptidoglycan and muerin. The entire cell wall is sacculus)
It is absent in the secondary cell wall:
Cutin
(component of primary wall)
In which type of cells, cell wall not present:
Fungal cells
Cellulose is usually not found in:
Middle Lamella
Holding neighbouring cells together is a function of:
Middle Lamella
The cell wall is secreted by the:
Protoplasm
Chitin is found in the cell wall of:
Fungi
Which is found in the primary wall:
Pectin
Which part of cells formed on the inner race of a plant cell at the end:
Secondary cell wall
Which is not found in the secondary wall?
Pectin
The primary cell wall contains all except:
Lignin
Pectin is a polymer of:
Galacturonic acid
Cellulose and hemicellulose are found in:
➡Primary cell wall
➡Secondary cell wall
_____ hold primary cell walls together
Middle lamella
Which component provides the cell wall extra tensile, rigidness and compressional strength
Lignin
A cell wall is present only in all organisms except:
Viruses
Cellulose is the major component of:
Primary wall
The outermost layer in a typical plant cell would be:
Primary cell wall
A plant cell wall is mainly composed of which of the following?
Cellulose
The first layer of cell wall which is formed is called:
Middle Lamella
The secondary cell wall of sclerenchyma is impregnated with:
Lignin
The remaining material between adjacent plant cells
Middle lamella
Which of the following is a non-living component of a plant cell?
Cell wall
The cell wall of fungi contains:
Chitin
Components of secondary cell wall:
Cellulose, Hemicellulose, Lignin
The cell wall is secreted by:
Protoplast
A cell without a cell wall is termed as:
Protoplast
The rectangular shape of plant cells is due to;
Cell wall
Which has a high affinity for water?
Cellulose
All of the following are common molecules in the membrane of all types of cells except:
Traces of carbohydrates
The hydrophobic portion of the plasma membrane of all types of cells except:
The inner core of the plasma membrane
Wich o the following describes the fluid mosaic model of plasma membrane structure?
Phospholipid bilayer with embedded proteins
In the plasma membrane, carbohydrates combine with the lipids and proteins to form glycolipids and glycoproteins and are oriented:
Towards outside
(act as a receptor)
Which of the following is not a characteristic feature of the animal cell membrane?
Prevent osmotic lysis
Which of the following acts as a receptor site on the plasma membrane?
Glycoprotein
Which structure is the most important or cellular life?
Cell membrane
(responsible for identity and integrity)
The intake of liquid materials across the cell membrane is:
Pinocytosis
Which substance from the following is important for the mechanical stability of cell hydrophobic as without it membranes quickly break and cells burst open? The hydrophobic region of these molecules helps to prevent ion or polar molecules from passing through the cell membrane?
Phospholipids
The fluid mosaic model of plasma membrane states that protein molecules float in a fluid-like _____ layer.
Phospholipid
The rapid exchange of materials through carrier proteins across the plasma membrane is called:
Facilitated Diffusion
(the process of transporting molecules via protein)
The basic structure of plasma membrane is provided by:
Phospholipids
Taking in of solid particle by the cell is called:
Phagocytosis
The self-eating ability of lysosome is called:
Autophagy
Passive processes for the movement of molecules across cell surface membrane are:
Facilitated Diffusion and Osmosis
The fluid mosaic model of the cell membrane is:
In which protein molecules are free to move about the fluid bilayer of phospholipid molecules
Cell permeability and transport processes of cell membrane depend upon its:
Phospholipid
According to the fluid mosaic model of the cell membrane, which zone is embedded inside?
Hydrophobic
Which of the following is not the function of the cell membrane?
Protein Synthesis
When a plant cell receives a signal for death, it commits suicide by rupturing:
Cell membrane
An enzyme that is attached to the cell membrane of the cell:
Adenylate cyclase
(synthesize cyclic AMP)
Which of the following is not associated with both prokaryotic and eukaryotic cell membrane?
DNA replication
The plasma membrane is found in the cells of:
➡Animals only
➡Plants only
➡Bacteria only
Cell membranes are composed of:
Lipids and Proteins
The cell membrane has 60-80%:
Proteins
The cell membrane has ____ thickness:
7nm
The cell membrane is:
Asymmetrical
Fluidity of cell membrane is due to:
Lipids
Fluidity of the membrane depends on its lipid components including:
➡Phospholipids
➡Glycolipids
➡Cholesterol
Which technique provided the primary evidence for the fluid mosaic model of the cell membrane
➡Chemical analysis
➡Microscopic staining
Which component act as a thermal stabilizer to maintain membrane fluid nature at variable temperature
Cholesterol
The mosaic nature of cell membrane is due to:
Proteins
Which class of carbohydrates are usually found in cell membrane:
Oligosaccharide
All functions are collectively performed by both lipids and proteins except:
Protective Function
Which molecules pass with great difficulty:
Ions as charged particles
CD4 receptors on T-lymphocytes are _____ in nature
Glycoproteins
Which will require no expenditure of energy:
Osmosis
In many animal cells, the cell membrane helps to take in materials by infolding them in the form of vacuoles. This type of intake is termed as:
Endocytosis
Endocytosis which involves ingestion of solid material is
Phagocytosis
By which of the following can movements of materials across animal cell membranes be accomplished?
➡Active transport only
➡Diffusion only
➡Pinocytosis only
The structure of plasma membrane is mainly held together by:
➡Proteins
➡Phospholipids
➡Carbohydrates
Ions cannot cross which part of the plasma membrane?
Phospholipid bilayer
Damage to one of the following immediately kills the cell whether it is prokaryotic or eukaryotic?
Cell membrane
What part of the cell serves as an intracellular highway?
Cell membrane
Glycolipids in the plasma membrane are located at?
The outer leaflet of the plasma membrane
Which statement is true about the lipid bilayer of the plasma membrane?
➡Permeable to a large ionic polar molecule
➡Permeable to a small ionic molecule
➡Permeable to an only polar molecule
✅None of the above
Peripheral parts of the cell are often like
Gel
It is false about the cytoplasm of eukaryotic cells:
Transcription
All of the following organelles contain DNA except:
Ribosomes
The 40S is the smaller ribosomal subunit, associated with:
Yeast
Identify non-membranous organelle from the following:
Ribosome
Ribosomes are tiny organelles, which are involved in the synthesis of:
Protein
Which one of the following organelle is found in both prokaryotic and eukaryotic cells?
Ribosome
Ribosomes present in prokaryotes are:
The 70S
The Group of ribosomes attached to mRNA is called:
Polysome
Which of the following organelle consist of two sub-units
Ribosome
The site of protein synthesis in cell is:
Ribosome
Ribosomes are made up of _____ and _____.
RNA and proteins
The cytoplasmic organelle commonly found in both prokaryotes and eukaryotes is:
Ribosome
The 70S-sized ribosomes are found in the cells of:
Bacteria
Select the organelle which is only present in animal cells?
Centrioles
Which of the following structures is present in both plant and animal cells but absent in prokaryotic cells?
Microtubule
Glycolysis is the common stage n both aerobic and anaerobic respiration and it occurs in ____ of the cell.
Cytoplasm
Which of the following is true about cytoplasm?
It is the region between the nucleus and cell membrane
The living substance of living beings is called:
Protoplasm
The plasma membrane and everything present is:
Protoplast
The soluble part of the cytoplasm is termed as:
Cytosol
Cyclosis and amoeboid movements are because of:
Microfilaments
Ribosomes combined with mRNA are called:
Polysome
Ribonucleoprotein particles are the same:
Eukaryotic Ribosomes
If 3 ribosomes attach to a single mRNA at different points then how many similar proteins will form:
1
What is the approximate ratio of RNA and protein in a ribosome?
1:1
Ribosomes are chemically composed of which the following?
➡Protein
➡RNA
It helps in the attachment of two ribosomal subunits:
Magnesium ion
Which of the following organelles is not bound by a membrane?
Ribosomes
The 60S and 40S sub-unit combine to form what size particle?
The 80S
Which of the following is synthesized by free-floating ribosomes of cytoplasm in humans?
DNA polymerase
The soluble part of the cytoplasm is known as the?
Cytosol
Enzymes that are an integral part of ribosomes are involved in the synthesis of which of the following molecules?
Proteins
The nucleolus is visible in:
Interphase
Which of the following organelle have a continuous connection with the nuclear membrane?
RER
It precisely describes the function of nucleoli:
Formation of ribosomes
rRNA is actively synthesized in:
Nucleolus
How many nuclear pores are present in a typical differentiated cell, such as RBC?
About 3-4 per nucleus
Ribosomal RNA is synthesized in:
Nucleolus
The structure present in a eukaryotic cell but absent in prokaryotic cells is:
Nucleus
It makes nucleoli during interphase:
Secondary constriction
In a generalized plant cell the nucleus is:
Displaced to the site of the cell
Generally, the cells with more than two nuclei are called:
Multinucleate
Ribosomal RNA (rRNA) is synthesized and stored in
Nucleolus
New ribosomes are assembled in (one or few darkly stained visible bodies within the nucleus are called);
Nucleolus
Which of the following statements about the nuclear envelope is NOT true?
its inner membrane bears ribosome
Erythrocytes have pores per nucleus:
3 or 4
The nucleus contains (A chromosome is composed of):
DNA
Chromosomes are stained with:
Acetoarcin
Nucleolus appears and disappears during
Interphase and Cell division
The centromere is also called:
Primary constriction
Each centromere had two plaques of protein
Kinetochore
A nuclear organizer is also referred to (Satellite containing junk DNA is closer to)
Secondary constriction
The terminal end of chromosomes that avoids mixing of chromosomes is called:
Telomere
Some part of chromatic that is densely stained is called:
Heterochromatin
The number of chromosomes in the fruit fly, Drosophila melanogaster
8
Germ cells of Drosophila have chromosomes
4
_____ is the heaviest particulate of the cell
Nucleus
Which of the following cells do not possess a nucleus?
➡Sevie tube cells
➡Bacteria
➡Red Blood cells
An animal has 80 chromosomes in its gametes, how many chromosomes will be seen in the animal’s muscle cells?
160`
The number of nuclear pores is highly variable in eukaryotic cells because?
Size of the nucleus
Which statement about the nucleolus is not true?
Hereditary centre
If an organism has a diploid number of 36, what is its haploid number?
18
The 23rd pair of chromosomes in man is:
Heteromorphic
Which of the following cell structure contains the highest concentration of RNA?
Nucleolus
All chromosomes other than sex chromosomes are called
Autosomes
Somatic cells of humans have how many pairs of chromosomes in total?
23
____ is responsible for making ribosomal RNA (rRNA)
Nucleolus only
The soluble sap of the nucleus in a plant cell is called:
Nucleoplasm
Factory of ribosomal synthesis of:
Nucleolus
Double membranous organelle having pores
Nucleus
Which of the following best describes the function of RER in eukaryotic cells?
Synthesis of proteins
Which of the following statement is incorrect regarding the endoplasmic reticulum?
RER is more abundant than SER in adipose tissue
A function that is not related to smooth endoplasmic reticulum:
Enzyme synthesis
Which o the following organelle is associated with the single membrane?
Endoplasmic Reticulum
Which of the following function is performed by both types of endoplasmic reticulum?
Mechanical Support
Which of the following organelle is responsible for the production of steroid hormones?
Smooth Endoplasmic Reticulum
Which one of the following cell structures are involved in the synthesis of lipids?
Endoplasmic Reticulum
The organelle involved in the detoxification of drugs and poisons in liver cells:
Smooth Endoplasmic Reticulum
The nuclear membrane is continuous with:
Endoplasmic Reticulum
Which of the following is correctly matched?
SER: Converts cholesterol into Vitamin D in the skin
Lipid Synthesis or lipid metabolism is the function of:
Smooth Endoplasmic Reticulum
The Smooth Endoplasmic Reticulum is responsible for the metabolism of:
Lipids
Select the one which is not a function of smooth endoplasmic reticulum (SER):
Processing of glycoproteins
Which of the following is not a product of ER in animal cells?
ATP synthase
The semi-circular channels and system of tubes found in the cytoplasm are known as:
Endoplasmic Reticulum
Endoplasmic Reticulum contains a system of flattened membrane-bounded sacs which are named as;
Cisternae
Lipids synthesis/ metabolism takes place in which of the following organelle?
Smooth Endoplasmic Reticulum
Which cell organelle is responsible for the transmission of impulses and detoxification of harmful drugs?
Smooth Endoplasmic Reticulum
Which of the following is not a function of Smooth Endoplasmic Reticulum (SER)?
Synthesis of membrane proteins
Which of the following is a mesh of interconnected membranes involved in protein synthesis and transport?
Endoplasmic Reticulum
Which of the following is false about the sarcoplasmic reticulum?
The sarcoplasmic reticulum is found only in voluntary muscle cells
Does cytoplasmic streaming movement cause flow of all of the following except?
Rough Endoplasmic Reticulum
Which one of the following is involved in lipid metabolism?
➡Rough Endoplasmic Reticulum
➡Golgi apparatus
➡Chloroplast
✅None of the above
Sarcoplasm is different from cytoplasm:
➡It contains sarcoplasmic reticulum
➡It contains glycogen
➡It contains glycogen and oxygen-binding protein, myoglobin
______ are storage bodies for intracellular calcium.
Smooth Endoplasmic Reticulum
The Smooth Endoplasmic Reticulum is not involved in:
Conversion of mRNA to amino acids
Which of the following is not the function of the endoplasmic reticulum?
Synthesis of conjugated molecules
The function of the Smooth Endoplasmic Reticulum (SER) is ____.
Synthesis of lipids
Spherical or tubular membranes which separate the material present in the endoplasmic reticulum from that of cytoplasmic material are called?
Cisternae
Which of the following is not the function of the endoplasmic reticulum?
Synthesis of conjugated molecules
Network of tubules continuous with nuclear membrane:
Rough Endoplasmic Reticulum
If a radioactive amino acid is given to an organism, the organelle that shows radioactivity the very first time:
Rough Endoplasmic Reticulum
Sarcoplasmic reticulum cells are those cells that contain:
Smooth Endoplasmic Reticulum more
______ extends from the nucleus and touches cell membarne.
➡Smooth Endoplasmic Reticulum
➡Rough Endoplasmic Reticulum
It is not found in the composition of the Endoplasmic Reticulum:
DNA
Which of the following is not a function of SER?
Synthesis of membrane proteins
Which of the following cell organelle can be viewed with the help of high power light microscope?
Mitochondria
It is the correct location of ATP synthase in mitochondria:
Inner mitochondrial membrane
Which of the following structure is involved in oxidative phosphorylation?
Inner mitochondrial membrane
The Krebs cycle occurs in the ______ of mitochondria.
Matrix
Which of the following cell type is more appropriate to study mitochondria?
Muscle cell
In Mitochondria, small knob-like structures called F1 particles are found in:
Inner Membrane
Which organelle is bounded by two membranes?
Mitochondria
The inner membrane of mitochondria forms extensive infoldings called:
Cristae
Functionally, mesosomes can be compared with:
Mitochondria
The inner membrane of mitochondria forms extensive infoldings called:
Cristae
Functionally, mesosomes can be compared with:
Mitochondria
Organelle involved in aerobic respiration:
Mitochondria
The inner membrane of the mitochondria is called:
Cristae
Which organelle is required for aerobic respiration?
Mitochondria
The finger-like infoldings formed by the inner membrane of mitochondria are called:
Cristae
The structure in the double membrane-bounded organelle, primarily involved in ATP generation through cellular respiration is:
F1-particles
R0-F1 particles is another name for:
ATP synthase
Cristae are found in:
Mitochondria
Infolding of the inner membrane of mitochondria are:
Cisternae
Powerhouse machinery is inherited by future offspring by:
Sperm o father
The number of mitochondria increases within a cell is
Self-Replication
Which cell will have move mitochondria than the others
Pancreatic cell
Oxysomes were discovered by
E.Rocker
F1 particles are involved in:
ATP synthesis
______ types of RNA are found in Mitochondria
3
Which organelle is considered to be organisms within an organism
➡Mitochondria
➡Chloroplast
Which of the following reactions does not occur in the mitochondrial matrix
Glycolysis
A number of mitochondria are controlled by
Lysosomes
The structures that are involved in the manufacture and supply of energy to the cell are:
Mitochondria
ADP is regenerated by mitochondria into which of the following?
ATP
Which of the following is not present in mitochondria?
Thylakoid
The outer and inner membranes of mitochondria are?
Structurally and functionally different
Which o the following is not a character of mitochondria?
The number of mitochondria is constant
Inner membrane convulsions of the mitochondria are called?
Cristae
Diameter of mitochondria ranges between:
0.5-1 μm
It is a true statement:
A lot of mitochondria are present in axons
Enzymes in the mitochondrial matrix help in which of the following metabolic processes?
➡Krebs cycle
➡Aerobic Respiration
➡Fatty acid metabolism
_____ plays role in respiration.
Mitochondria
Which of the following combination is an example of self-replicating organelle?
➡Mitochondria
➡Chloroplast
Which of the following is a double membranous organelle?
➡Nucleus
➡Mitochondira
➡Chloroplast
F1 particles are present in:
Mitochondria
Chlorophyll molecule resembles with:
Haem part of haemoglobin
Which of the following statement is incorrect?
Inter-granum is photosynthetic
Which statement is correct about mitochondria and chloroplast?
70S ribosome is attached to the inner membrane of mitochondria and chloroplast
Identify the correct pair from the following options:
Modification - Golgi apparatus
Modification of proteins and lipids into glycoproteins and glycolipids is the function of:
Golgi apparatus
Golgi complex is involved in the formation of:
Lysosomes
The transport of secretory proteins takes place through organelles in which of the following order?
RER➡SER➡Golgi apparatus➡Secretory vesicles
The cisternae break up into vesicles from ____ and ___ of the Golgi complex
Concave, Forming face
Which cell organelle is responsible for cell secretion?
Golgi body
Which o the following organelles are involved in the synthesis of the plant cell walls?
Golgi complex
Which of the following does not originate from the Golgi complex?
All originate from the Golgi complex
Phragmoplast is associated with:
Golgi complex
Golgi apparatus is concerned with cells:
Secretion
Organelle _____ is concerned with cell secretion:
Golgi complex
Which of the following modifies proteins and lipids by adding carbohydrates?
Golgi apparatus
Another name for Golgi-Complex is;
Dictyosome
Which cell organelle lacks nucleic acid?
Golgi apparatus
Golgi complex was discovered by which scientist?
Camillo Golgi
Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates?
Golgi apparatus
Golgi complex is responsible for the formation of secretory granules in _____ cell?
Pancreatic
The pancreas produces secretory granules that help in digestion. The see granules after passing through the endoplasmic reticulum are pinched off from the surface of the Golgi apparatus?
Maturing face
What shape of the maturing phase of the Golgi apparatus is?
Concave
Which organelle forms the cell membrane?
Golgi body
Which is incorrectly matched:
Golgi apparatus➡Intercellular digestion✅
Cell membrane➡Cell Recognition❌
SER➡Carbohydrate metabolism❌
RER➡Protein synthesis❌
Which of the folllowng organelle is most abundant in those animal cells which exhibit phagocytic activity?
Lysosomes
It is a disease characterised by the accumulation of lipids in the brain cells leading to mental retardation and even death:
Tay-Sachs disease
Tay-Sachs disease occurs when cells are unable to produce an enzyme leading to the build of certain lipids in the cell. Which cell structure would not function correctly?
Lysosomes
These structures are involved in the breakdown of old organelles:
Lysosomes
Strictly speaking, autophagosomes are actually:
Secondary Lysosome
Suicidal bags are:
Lysosomes
Lysosomes were isolated and studied for the first time by (Lysosomes were discovered by):
De-Duve
Any foreign object that gains entry inside the cell is immediately engulfed by:
Lysosome
A tadpole’s tail is gradually gained entry inside the cell and is immediately engulfed by:
Lysosome
The size of lysosomes ranges between:
0.2 to 0.5 μm
Lysosomes are ____ organelles.
Single membranous
_____ is the self-digestion of a cell by releasing the contents of lysosomes within the cell.
Autolysis
Tay-Sachs disease results due to accumulation in brain cells:
Lipids
What are autophagosomes?
➡Those lysosomes which eat parts of their own cells to generate energy
➡Those lysosomes which eat old and worn-out cellular organelles
Lysosomes are known as “suicidal bags” because of:
Hydrolytic activity
Which of the following cell organelle does not contain DNA?
Lysosomes
The process of self-digestion of selective nonfunctional organelle by cells through the actions of enzymes originating from the cell is called?
Autophagy
Phagocytosis, autophagy and extracellular digestion are the functions of:
Lysosomes
A disease caused by the absence of a lysosomal enzyme responsible for lipid catabolism:
Tay-Sachs disease
The cells which lack lysosomes would have difficulty in which of the following
Digesting food
Lysosomes are formed by:
Golgi Complex
Which of the following eukaryotic organelle has a symbiotic origin with bacteria?
Chloroplast
Chlorophyll molecule resembles with:
Haem part of haemoglobin
Which of the following statement is incorrect?
➡CO2 fixation occurs in stroma✅
➡Chloroplasts are self-replicating✅
➡Inter-granum is photosynthetic❌
➡Chloroplasts have 70S ribosomes✅
Which of the following statement is correct about mitochondria and chloroplast?
70S ribosome is attached to the inner membrane of mitochondria and chloroplast
Among the followings which cellular organelle contains circular DNA similar to those found in bacteria?
Chloroplast
Each chloroplast contains ___ grana
40-50
Plastids are present only in:
Plant cell and algae
In a plant cell, chlorophyll is present in (In photosynthetic plant cells, membrane-bound structures containing green pigment are called):
Chloroplasts
Stroma is fluid in the chloroplast:
Matrix
The fluid which surrounds the thylakoids is called:
Stroma
Which statement about plastids is true?
They contain DNA and ribosome
Proplastids are found in:
➡Flowers & Fruits
➡Shoot
➡Root
Etioplast on exposure to sunlight develop into:
Chloroplast
Elaioplast store
Lipids
Dark reaction/ CO2 fixation takes place in:
Stroma
Which part of thylakoids take part in light reaction actively
Smaller thylakoid
Which of the following is colourless?
Leucoplasts
Leucoplasts are a kind of:
Plastids
The type of plastids found in the roots of plants:
Leucoplasts
In the plants, 50 or more thylakoids piled upon each other to form?
Granum
The dense fluid-filled region in the chloroplast is called:
Stroma
Enzymes in Calvin Cycle are found in which cell organelle?
Chloroplast
Which type of cell would be the most appropriate for the study of chloroplasts?
Photosynthetic cell
Stacked of thylakoids in chloroplasts is called?
Grana
Which of the following organelle is involved in the release o oxygen?
Chloroplast
The matrix surrounding the grana in the inner membrane of the chloroplast is called?
Stroma
Plants store food in;
Leucoplast
Double membranous structures having coins like stacks of membranes are known as:
Chloroplast
The Yellowing and brown end of the leaf is because o a deficiency of:
Chlorophyll
The Colour of the petals is due to:
Chromoplast
Enzymes for the light-dependent reaction are present in:
Thylakoid membrane of the chloroplast
____ provides support for the individual plant cell and contributes to the turgidity of the leaves and younger parts of plants.
Vacuole
What is the specific name given to the biological membrane that surrounds the vacuoles?
Tonoplast
The presence of a large central vacuole is the characteristic of:
Plants
Which of these is solely present in plant cells only?
Central vacuole
The membrane separating the vacuole from the cytoplasm is called:
Tonoplast
Which of the following statement is true?
Prokaryotic cells evolved before eukaryotic cells
What is the main difference between prokaryotes and eukaryotes?
Prokaryotes do not have internal membranes
Prokaryotes do not have internal membranes
Presence of ribosomes
The distinguishing feature of a prokaryotic cell is its:
Cell Wall
(Composed of peptidoglycan/muerin)
Peptidoglycan or muerin is a special or distinctive feature of the cell wall in:
Bacteria
DNA molecule in prokaryotes is:
Single, Circular Double stranded molecule not bounded by a membrane
In prokaryotic cell wall strengthening material is:
Murein
What combination is found in prokaryotic cells?
➡Mitochondria: Absent
➡Ribosomes: Present
➡DNA: Present
➡RNA: Present
Bacteria are :
Haploid
Introns are present in ___ only.
Eukaryotes
Plasmids that are transferred during conjugation are called
Transmissible
Flagella in prokaryotes are made up of protein called:
Flagellin
Flagella in eukaryotes are made up of protein called:
Tubulin
Structures not found in prokaryotes are:
Cytoskeleton
A respiratory activity like Mtochondiria in prokaryotes is performed by:
Mesosomes
Glycolacyx is made up of:
➡Capsule
➡Slime
Binary fission is found in:
Bacteria
Which combination of organelles is usually present in both animal and plant cells?
➡Mitochondira
➡Endoplasmic Reticulum
➡Ribosomes
Unlike eukaryotes, prokaryotes have no membrane-bound organells. How, then are prokaryotes able to generate energy?
Prokaryotes generate proton gradients across their plasma membrane
Which statement describes an incorrect difference between a plant cell and a bacterial cell?
➡The bacterial call has 70S ribosomes whereas a plant cell has 80S ribosomes
➡Bacterial cell divides by binary fission whereas a plant cell divides by mitosis
➡Bacterial Cells do not have a nuclear membrane whereas plant cells have
✅None of the above
Which of the following components of an animal cell is not observed in a bacterial cell?
Nucleus
Eukaryotes can share which of the following structures with prokaryotes?
Cytoplasm
Which structure differentiates eukaryotic form a prokaryotic cell
Nuclear Membrane
