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Questions and Answers

Who discovered the cell?

Robert Hooke

The jelly-like substance between the nucleus and cell membrane is called:

  • Otic
  • Amniotic
  • Cytoplasm (correct)
  • Pleural

What is the smallest unit of life capable of independent existence?

Cell

What is the process of contraction of the cell away from the cell wall due to water loss called?

<p>Plasmolysis (D)</p> Signup and view all the answers

What is a single-celled fertilized egg called?

<p>Zygote</p> Signup and view all the answers

What is the outermost covering of the cell that separates the contents of the cell from its external environment?

<p>Plasma membrane (C)</p> Signup and view all the answers

What cell organelle is called the "powerhouse of the cell"?

<p>Mitochondria (D)</p> Signup and view all the answers

Which of the following organelles is responsible for the transfer, packaging, and modification of proteins and lipids in vesicles?

<p>Golgi apparatus (A)</p> Signup and view all the answers

Which of the following organelles is called suicidal bags of the cell?

<p>Lysosomes (D)</p> Signup and view all the answers

Which of the following organelles is responsible for keeping the cell clean by digesting any foreign material as well as worn out cell organelles?

<p>Lysosome (B)</p> Signup and view all the answers

Who coined the term “protoplasm”?

<p>Johann Evangelist Purkinje (C)</p> Signup and view all the answers

Which cell organelle is called ‘the master of the cell’?

<p>Nucleus (A)</p> Signup and view all the answers

What is the largest cell organelle present in a cell?

<p>Nucleus (A)</p> Signup and view all the answers

Which of the following organelles Is called 'protein factories of the cell'?

<p>Ribosomes (D)</p> Signup and view all the answers

Which of the following cells is found only in animal cells?

<p>Centriole (D)</p> Signup and view all the answers

Which of the following statements is NOT true for meiosis?

<p>As a consequence of meiosis, the number of chromosomes is doubled in resulting cells (A)</p> Signup and view all the answers

Which of the following is a function of plant cell walls?

<p>Conduction of water (C)</p> Signup and view all the answers

Which of the following is NOT a type of xylem?

<p>Sieve tube (B)</p> Signup and view all the answers

Which of the following statements is TRUE about the Nucleus?

<p>All of the above (D)</p> Signup and view all the answers

In animal cells, the nucleus is present in_____________?

<p>centre of cell (A)</p> Signup and view all the answers

Which of the following cell organelles play the most significant role in protein synthesis?

<p>Endoplasmic reticulum and ribosome (D)</p> Signup and view all the answers

Which one of the following organelles is the smallest membrane bound organelle?

<p>Ribosome (C)</p> Signup and view all the answers

The special modified epidermal cells surrounding stomatal pore are called?

<p>Guard cells (C)</p> Signup and view all the answers

What tissue forms a complete communication system and performs the function of information transmission in the human body?

<p>Nervous tissue (C)</p> Signup and view all the answers

Which one of the following statements is TRUE for the outermost layer of the human body (skin)?

<p>It is made of epithelial cells (A)</p> Signup and view all the answers

Which is the largest organ of the human body?

<p>Skin (D)</p> Signup and view all the answers

What are the types of muscle tissue?

<p>3 types of muscle tissue (B)</p> Signup and view all the answers

Which of the following helps in the repair of tissue and fills up the space inside the organ?

<p>Areolar (A)</p> Signup and view all the answers

The tissue that forms the inner lining of our mouth.

<p>Simple squamous epithelium (C)</p> Signup and view all the answers

Histamine-secreting cells are found in

<p>Connective tissues (D)</p> Signup and view all the answers

Which of the following is NOT a connective tissue?

<p>Nerve cell (B)</p> Signup and view all the answers

What tissue forms the vascular pools?

<p>Xylem and Phloem (B)</p> Signup and view all the answers

Which tissues are found in bones of our body?

<p>Connective (D)</p> Signup and view all the answers

Which tissues form the gland?

<p>Epithelium (C)</p> Signup and view all the answers

Which of the following cells helps in the repair of tissue and fills up the space inside the organ?

<p>Areolar (A)</p> Signup and view all the answers

The muscular tissue which function throughout life continuously without fatigue is

<p>Cardiac muscle (C)</p> Signup and view all the answers

Which one of the following cells is found in cartilaginous tissue of the body?

<p>Chondrocytes (B)</p> Signup and view all the answers

The dead element present in the phloem is

<p>Phloem fibres (A)</p> Signup and view all the answers

In desert pants, rate of water loss gets reduced due to the presence of

<p>Cuticle (A)</p> Signup and view all the answers

A long tree has several branches. The tissue that helps in the sideways conduction of water in the branches is

<p>Xylem parenchyma (D)</p> Signup and view all the answers

The cells of sclerenchyma have ________ cell wall due to deposition of _________.

<p>Thick, lignin (D)</p> Signup and view all the answers

What is the process of adopting a permanent structure, shape and action to form permanent tissues?

<p>Differentiation (B)</p> Signup and view all the answers

Which of the following is the major site for ATP generation?

<p>Mitochondria (B)</p> Signup and view all the answers

Which fluid carries absorbed fat from intestine and drains excess fluid from extra cellular space back into the blood?

<p>Lymph (D)</p> Signup and view all the answers

What is the function of hypodermis?

<p>Both (c) and (d) (A)</p> Signup and view all the answers

Flashcards

Cell Membrane (Plasma Membrane)

The outer boundary of a cell, controlling what enters and leaves.

Cell

The smallest unit of a living organism capable of independent existence.

Fluid Mosaic Model

A model describing the structure of the cell membrane as a fluid, dynamic arrangement of molecules.

Nucleus

The control center of the cell, containing the genetic material (DNA).

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Protoplasm

The living substance of a cell, encompassing the cytoplasm and nucleus.

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Cytoplasm

The jelly-like substance within a cell, surrounding the nucleus.

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Nucleolus

A dense structure within the nucleus, involved in ribosome production.

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Centriole

A small organelle involved in cell division.

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Centrioles Discovery

Discovered independently by Theodor Boveri and Edouard Van Beneden in 1887.

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Chromosomes

Structures made of DNA and proteins that carry genetic information.

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Endoplasmic Reticulum

A network of membranes within the cell, involved in transport and synthesis.

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Ribosomes

Small structures responsible for protein synthesis.

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Golgi Apparatus

An organelle involved in processing and packaging proteins and lipids.

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Lysosomes

Organelles containing enzymes for breaking down waste materials.

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Mitochondria

The "powerhouses" of the cell, producing energy.

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Chloroplast

Organelles found in plant cells that perform photosynthesis.

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Chlorophyll

Green pigment in chloroplasts that absorbs light energy.

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Microtubules

Protein filaments that provide structural support and movement in cells.

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