Fundamental Unit of Life- Cell - I (2016)
Fundamental Unit of Life – Cell ( SET - 1)
Questions
Lysosomes are called as the suicidal bags of a cell because they
- digest foreign materials entering the cell
- contain powerful digestive enzymes
- burst and their enzymes digest their own cells
- digest the old organelles of their own cells
Why does a plant cell not burst when it is placed in a hypotonic solution?
- Due to the presence of cell wall
- Due to the presence of cytoplasm
- Due to the presence of plasma membrane
- Due to the presence of large vacuoles
Why is the inner membrane of mitochondrion deeply folded?
- To provide large surface area for synthesis of glucose
- To provide large surface area for synthesis of lipids
- To provide large surface area for packaging of proteins
- To provide large surface area for ATP-generating chemical reactions
Why do golgi bodies have connections with the membranes of ER?
- To prevent the membranes from mechanical injury
- To store and dispatch the materials synthesised by ER
- To form lysosomes in ER
- To transport ribosomes to ER
Which part of a cell determines the way the cell will develop?
- Nucleoid
- Plasma membrane
- Cytoplasm
- Nucleus
Which of the following is not a function of nucleus?
- It plays a central role in cellular reproduction.
- It determines the form that a cell will exhibit.
- It carries hereditary information from one generation to another.
- It generates energy for a cell.
Match the following.
| (1) Robert Hook |
<font size="2" face="Arial"> (2) Scleiden and Schwann</font>
<font size="2" face="Arial"> (3) Robert Brown </font>
<font size="2" face="Arial"> (4) Purkinje</font> | <font size="2" face="Arial"> (i) Nucleus </font>
<font size="2" face="Arial"> (ii) Protoplasm</font>
<font size="2" face="Arial"> (iii) Cell as a basic unit of life</font>
<font size="2" face="Arial"> (iv) Cell</font> |
- 1 - iv, 2 - ii, 3 - iii, 4 - i
- 1 - iv, 2 - iii, 3 - i, 4 - ii
- 1 - iv, 2 - ii, 3 - i , 4 - iii
- 1 - iv, 2 - i, 3 - ii, 4 - iii
Organelles which store starch, oil and protein granules are known as
- chloroplasts
- rhodoplasts
- chromoplasts
- leucoplasts
Why is cell called the structural and functional unit of life?
- Because it shows division of labour
- Because it performs all the characteristic functions of a living being
- Because it synthesises proteins, which are building blocks of life
- Because all cells have the same organelles irrespective of their functions and locations
Which of the following is not a unicellular organism?
- Chlamydomonas
- Paramecium
- Rhizopus
- Euglena
Which of the following organelles have their own DNA and ribosomes?
- Mitochondria and golgi apparatus
- Mitochondria and plastids
- Endoplasmic reticulum and plastids
- Mitochondria and lysosomes
Ribosomes are the main site of
- respiration
- absorption
- protein synthesis
- photosynthesis
Which of the following statements is incorrect?
- Nucleus has a double layered covering of membrane.
- Nuclear membrane has pores, which allow the transfer of material.
- Nucleus contains cell organelles that perform various functions.
- Nucleus carries hereditary information from one generation to another.
Which of the following correctly differentiates a prokaryotic cell from a eukaryotic cell?
- Prokaryotic cells do not perform photosynthesis but eukaryotic cells perform photosynthesis.
- Prokaryotic organisms lack cytoplasm but eukaryotic organisms possess cytoplasm.
- Nuclear membrane is absent in prokaryotes but it is present in eukaryotic organisms.
- Prokaryotes have a well defined nuclear region but eukaryotes possess nucleoid that contains only nucleic acid.
What will happen if a plant cell is placed in a hypertonic solution?
- It will burst.
- It will shrink.
- It will swell.
- It will remain unaffected.