EASY
Earn 100

Which of the following points were not explained by Schleiden and Schwann when they formulated their original cell theory?

41.67% studentsanswered this correctly

Important Questions on Cell : The Unit of Life

EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Chromatophores take part in:
MEDIUM
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory

Mitochondria and chloroplast are:

(i) Semi - autonomous organelles

(ii) Formed by the division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery

Which one of the following option is correct?

MEDIUM
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Identify the correct order of organization of genetic material from largest to smallest :
MEDIUM
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Match the columns and identify the correct option.
 
  Column I   Column II
A Thylakoids (i) Disc-shaped sacs in Golgi apparatus
B Cristae (ii) Condensed structure of DNA
C Cisternae (iii) Flat membranous sacs in stroma
D Chromatin (iv) Infoldings in mitochondria
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Identify the mis-matched from the following:
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Which one of the following is not applicable to RNA?
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Root pressure is usually acidic because:
HARD
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Nuclear envelope is a derivative of:
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Cell theory was formulated by
MEDIUM
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Fertilization in humans is practically feasible only if:
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Proteins P, Q, and R are associated with an intact organellar membrane in a cell. If the intact organelle is treated with a high ionic strength buffer, only protein R remained associated with the membrane fraction. Based on this, one could conclude that:
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
The concept of “Omnis cellula-e cellula” regarding cell division was first proposed by:
MEDIUM
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
The molecular weight of E coil. DNA is 3.1×109 g/mol. The average molecular weight of the nucleotide pair is 660 g/mol and each nucleotide pair contributes to 0.34 nm to the length of DNA. The length of E coli DNA molecule will be approximately:
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
If you suspect major deficiency of antibodies in a person, to which of the following would you like for confirmation evidence?
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
The schematic below describes the states of the lac operon in the absence of lactose. Which ONE of the following happens when lactose is present in the cell?
Question Image
HARD
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Gene regulation governing lactose operon of E. coli that involves the lac I gene product is:
MEDIUM
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
In sea urchin DNA, which is double-stranded, 17% of the bases were shown to be cytosine. What are the percentages of other three bases expected to be present in this DNA?
MEDIUM
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Microtubules are the constituents of:
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
The size of Pleuropneumonia-like Organism (PPLO) is:
EASY
Biology>Cell : Structure and Functions>Cell : The Unit of Life>Cell Theory
Fill up the blanks with suitable words.
Schleiden __i__ observed that all plants are composed of different kind of cells. Schwann __ii__ studied animal cells and reported that plants have __iii__ and all cells had __iv__ , and Virchow explained that cells divided and formed new cells from __v__. This constitutes __vi__.
A) Cell theory
B) Zoologist
C) Existing cells
D) Cell wall
E) Plasma membranes
F) Botanist