Tag: introduction to cell discovery and cell theory

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Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

The term mitosis was given by

  1. Farmer

  2. Flemming

  3. Boveri

  4. Moore
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mitosis was first observed by Boveri and Flemming (1879) in animal cells. But the term mitosis was given by Flemming (1882).

Mitosis is the common method of cell division in which parent cell divides into two daughter cells with an equal number of chromosomes and thus, called as equational division. It occurs in somatic cells of the both unicellular and multicellular organisms.
Therefore, the correct answer is option B.

Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

An organism made up of many cells is known as 

  1. Unicellular

  2. Multicellular

  3. Acellular

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The organism made up of many cells are known as multicellular.

A unicellular organism, also known as a single-celled organism, is an organism that consists of only one cell, unlike a multicellular organism that consists of more than one cell. 
The absence of cells is known as acellular.
So, the correct answer is option B.

Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

A cell is the .......... and functional unit of an organism.

  1. Longest structural

  2. Smallest structural

  3. Biggest structural

  4. Strongest structural
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Cells are called the smallest structural and functional unit of life because all the living organisms are made up of cells and also all the functions taking place inside the body of organisms are performed by cells. 
Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

Organisms having bigger size and have a complex structure are called as 

  1. Acellular

  2. Unicellular

  3. Multicellular

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Organisms can consist of one cell to many cells. 
  • The cell is the structural unit of life. Unicellular organisms are made up of one cell that performs all the functions.
  •  Whereas, a multicellular organism that consists of multiple cells and a different group of cells perform different functions which give complexity to the multicellular organisms.
Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

Define cell.

  1. A thick solution mainly composed of water, salts and proteins

  2. Basic structural, functional and biological unit that can replicate independently

  3. Biopolymers or large biomolecules essential for all known forms of life

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • The cells are the basic structural, functional and biological unit of all known living organisms. 
  • Cells are the smallest unit of life that can replicate independently and are often called the building blocks of life. 
  • The human body is composed of trillions of cells. 
  • They provide structure for the body, take in nutrients from food, convert those nutrients into energy and carry out specialized functions. 
  • Cells also contain the body's hereditary material and can make copies of them.
So, the correct answer is option B.

Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

All living things including plants and animals are made up of 

  1. Cell

  2. Cell wall

  3. Nucleus

  4. Plastids
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The first characteristic of a living thing is that they are made up of cells. A cell is a basic building block of all organisms. 
  • It is the smallest unit of organization in a biosphere. A cell performs the life process to maintains the survival of an organism.
Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

 Which of the following is a type of cell?

  1. Eukaryotic

  2. Prokaryotic

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cells can be prokaryotic or eukaryotic. If the cells have dispersed nucleus i.e., nucleoid then these are called as prokaryotic cells. Eukaryotes are organisms, whose cells are organized into complex structures by internal membranes and a cytoskeleton.
So, the correct answer is option C.

Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

Bricks in a building and cells in the living organisms are 

  1. Basic structural unit

  2. Basic model

  3. Basic unit

  4. Basic structure
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Cells are called the structural and functional unit of life because all the living organisms are made up of cells and also all the functions taking place inside the body of organisms are performed by cells. Cells provide specific conditions, for the occurrence of the metabolic reactions. These have specialized enzymes, which catalyze the biochemical reaction and regulates the functions of the body.
Multiple choice bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

Who first saw and described a live cell?

  1. Robert Hooke

  2. Robert Brown

  3. Gregor Mendel

  4. Anton von Leeuwenhoek
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The first man to witness a live cell under a microscope was Antonie van Leeuwenhoek, who described the algae, Spirogyra, in 1674. He named that cell as animalcules. He is also known as father of microbiology, as he was first to study the microorganism.
So, the correct answer is option D.