Cell the unit of life Flashcards by Yoongibae Sailo

The cell wall of bacteria consists of ______

Peptidoglycan

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Gram +ve or gram -ve has techoic acid

Gram +ve

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The Golgi apparatus for Plant cells is known as

dictyosomes

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The only animal cell having Plastids

Euglena

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According to danielli davson, plasma membrane is about ____ nm

8.5

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Who gave the trilaminar appearance or unit membrane concept

Robertson

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RBC has ___ protein and ____ lipids

52% proteins and 40% lipids

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Composition of plant cell wall

cellulose, hemicellulose,lignin,pectin

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Composition of Bacterial cell wall

peptidoglycan / polysaccharides with amino acid + Murein if gram +ve

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Composition of fungal cell wall

Chitin

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Composition of algal cell wall

cellulose, galactans, mannans and minerals like sulphur dioxide and cal carbo

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The four endomembrane system

Golgi, ER, lysosomes and vacuoles

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ER are not present in the RBC of ____ , ___and ____ cells

mammals ,eggs and embryonic cells

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Function of RER

synthesis, secretion and transportation of proteins

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Function of SER

synthesis lipids and steroids

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RER is present in

fibroblasts

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SER present in

adipose cells, liver cells, interstitial cells, leucocytes and adrenal cortex cells

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cisternae is for?

cristae is for?

cisternae - golgi

cristae -mitochondria

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the vesicles from golgi secrete their enzymatic content to the outside of the cell by ____-

reverse pinocytosis

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Golgi Functions (3) :

1) collection, packaging, secretion and transport
2) Formation of glycoproteins and gylcolipids
3) Formation of lysosomes

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What formed the lysosomes ?

Golgi apparatus

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Lysosomes are discovered by

Christian de Duve

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What organelle contains hyrolases

Lysosomes

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Lysosomes are active at what ph

acidic

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Functions of lysosomes

1) digestion of extracellular particles like food molecules 2) Digestion of intracellular particles during starvation to provide energy 3) digestion of harmful substances

What are known as THe Suicidal bag?

Lysosomes

Vacoules are bounded by

tonoplast ( single membrane) in plants | lipoproteinaceous membrane in animals

Function of tonoplast

transport of ions into the vacuoles

What organelle forms glycoproteins and glycolipids

Golgi

____ are abundant in endosperm cells of oil seeds

Spherosomes

What organelle synthesis lipids

Spherosomes

Who coined the term " mitochondria"

Benda

who discovered Mitochondria

Altman

In mitochondria, ___ contains all the enzymes for ETC

Cristae

Where are the elementary particles / stalked particles of mitochondria present

Cistae

Elementary particles of mitochondria are assosicated with

ATP production

The two enzymes present in the outer membrane of the mitochondria

adenylate kinase and nucleoside diphosphokinase

the presence of ___ in the mitochondira make it alike with the prokaryotes

single circular dna

The ribosome present in mitochondria

70S

The content of inner chamber of mitochondira

1) single circular dna 2) ribosomes 3) rna molecules

the site of respiration ( krebs cycle)

mitochondria

stroma contains ____ and ribosomes ( hint: alike with prokaryotes)

circulr dna

Ribosomes in chloroplast

70S

Ribosomes in cytoplasm

80S

Semi autonomous organelles

Mitochondria and chloroplast

Chlorophyll pigments are present in

Thylakoids

Amyloplast store

Starch

___ store oils and fats

elaioplasts

____ store proteins

aleuroplasts

The non membrane bound organelle

Ribosome

Ribosomes first discovered by __ in plant cell

Robinson and Brown

Ribosomes discovered in animal cell and studied under electron microscope by

George Palade

_____ forms cilia , flagella and centrioles

microtubules

_____ form spindle fibres and astral ray

Microtubules

Other name for Basal body

Kinetosome

The microtubule arrangement of cilia and flagella

9+2

Microtubule arrangement for basal body

9+0

Other name for centrioles

diplosomes

centrosphere other name

kinoplasm

__ + ___ = centrosome

centrioles + centrosphere

Microtubule arrangement in centrioles

9+0

Cilia and flagella occur in ___ Centrioles oocur in ___ ( doublet / triplet)

Cilia and flagella- doublet | Centriole - triplet

The largest of all cell organelles

Nucleus

Nuclues if absent in _ and __ in eukaryotes

mature phloem sieve tube elements and mature RBCs of mammals

Site where Rna is synthesised in the nucleus

nucleolus

___ discovered chromosomes

waldeyer

Chromosomes best studied during __ stage

metaphase

The animal having the highest no. of chromosomes

Hermit crab ( eupagurus

The primary constriction is called the ___

centromere

Peroxisomes contain

powerful oxidative enzymes. | Catalase most imp

Known as peroxisome

coz of their involvment in peroxide biosynthesis

The microbodies that contain enzymes to break down fats

Glyoxysomes