Cells: Biology One Liner Questions for SSC, Railway

Cells: Biology One Liner Questions for SSC, Railway

Cell organelles- classified into 3 categories:


(i) Without membrane: Not bounded by any membrane. present in both prokaryotic & eukaryotic organisms. e.g.-Ribosomes

(ii) Single membrane-bound: bounded by a single membrane. 
For example- vacuole, lysosome, Golgi Apparatus, Endoplasmic Reticulum etc. 

present only in a eukaryotic cell.


*(iii) Double membrane-bound:  present only in a eukaryotic cell.
Example- mitochondria and chloroplast





Cell Wall- Made up of Cellulose in plant & Peptidoglycan in bacteria.

Nucleus- Covered by a double membranous nuclear membrane in a Eukaryotic Cell.
>Contains chromosomes or DNA, RNA, Protein, nucleolus.

>Function- Starts cell division.



Mitochondria-
>Autonomous body as contains its own DNA.
>Self-duplicates


Golgi Bodies- Function: Modification, Packaging, and transport of materials.



Endoplasmic Reticulum (Framework of Cell)-Forms the skeletal framework of the cell.

Lysosomes- Intracellular digestion of food in unicellular organisms.



Vacuole-
>Store cell sap which may be liquid or solid food, toxic byproduct.
Provide rigidity and turgidity to plant cell.
>Not fix shape or size. cell can change them as it wants.



Plastids- Types-

(i) Leucoplast –Colourless plastid;

(ii) Chromoplast –Coloured Plastid – blue, red, yellow

(iii) Chloroplast – Green plastid

>Autonomous self-duplicating body

_________________________________________
One Liners Questions

1). Cell theory was proposed by
[Schleiden and Schwann]



2). The only cell organelle seen in prokaryotic cell is
[Ribosomes]

>Not bounded by any membrane.


3). Which animal cell structure is characterized by selective permeability ? 
[Cell membrane]


4). The process of mitosis is divided into 4 phases. correct order of phases-
[Prophase, Metaphase, Anaphase and Telophase]

>mitosis-type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus



5). undefined nuclear region in a bacteria is
[nucleoid]


>The nucleoid (meaning nucleus-like) is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material.



6). The main arena of various types of activities of a cell is
 [Cytoplasm]

>It consists of proteins, fats, carbohydrates, nucleic acids, vitamins, waste metabolites and all organelles.


*7). Nuclear material without cover is found in
[Bacteria and Blue green algae]

Blue-green algae (also known as Cyanobacteria) are a group of photosynthetic bacteria that many people refer to as "pond scum."


8). Nucleus plays a crucial part in 
[cellular reproduction]- Cell division



9). Organelle other than nucleus, containing DNA is 
[Mitochondira]



10). Mitochondria are present in both animals and plants and it contain DNA. >>but in plants, also plastids have their own DNA & ribosomes.

So Mitochondria & plastids are two cell organelle outside the nucleus that contain DNA.

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