Self Studies
Self Studies
Self Studies
Self Studies

Cell The Unit of Life Test - 47

Result Self Studies

Cell The Unit of Life Test - 47
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Which of the following is absent in plant cell?
    Solution
    Centrioles are the part of centrosome located near the nucleus in the animal cell and some lower plant cells. But in higher plants, it is absent. It is involved in the formation of spindle fibre during cell division.
  • Question 2
    1 / -0
    The cell wall of prokaryotes are made up of
    Solution

    Correct Option: C

    Explanation:

    • Peptidoglycan (murein) is the major component of the bacterial cell wall.
    • This peptidoglycan covering gives the cell shape and surrounds the cytoplasmic membrane
    • N-acetyl glucosamine (NAG) and N-acetyl muramic acid (NAM) are the structural components of peptidoglycan.

    Hence, the cell wall of prokaryotes is made up of peptidoglycan.

  • Question 3
    1 / -0
    Which of the following is a prokaryote?
    Solution

    Correct Option: D

    Explanation:

    • Prokaryotic cells are simpler and smaller than eukaryotic cells.
    • These cells lack membrane-bound organelles and a true nucleus.
    • Prokaryotic organisms are unicellular organisms, which reproduce through binary fission e.g., bacteria, mycoplasma, blue-green algae. 
  • Question 4
    1 / -0
    Which of the following is responsible for mechanical support and enzyme transport?
    Solution
    Dictyosomes are stacks of flat, membrane-bound cavities and comprise Golgi apparatus. They serve in storage, modification, sorting, and packaging of proteins into vesicles for transport.
    Plasmalemma/cell membrane is the biological membrane that separates the cell’s interior from surrounding. It is a phospholipid bilayer with embedded protein and serves as a selectively permeable membrane.
    The endoplasmic reticulum is a eukaryotic organelle with a network of tubules, vesicles and cisternae within the cells. It serves in synthesis and transport of proteins (enzymes are the protein molecules that speed up the rate of reactions) and lipids and also provides skeletal support to the cytoplasmic matrix.
    Mitochondria are double membrane bound eukaryotic cell organelles that serve as a site for cellular respiration, produce an enormous amount of energy and therefore are also known as the power house of cell.
    So, the correct answer is option C.
  • Question 5
    1 / -0
    What are prokaryotic cells?
    Solution
    Prokaryotic cells are the primitive cells, which have disorganized nucleus. They do not have a nuclear membrane. These cells are devoid of membrane-bounded organelles. They are not specialized and lack division of labor. These are unicellular where a single cell performs all the functions e.g., bacterial cell.
    Hence the correct option is A.
  • Question 6
    1 / -0
    A prokaryotic cell lacks
    Solution
    Answer is option D i.e. "All of the above"
    A prokaryotic cell is a cell which doesn't have an organized cellular structure. The membrane-bounded nucleus is absent and the genetic material is scattered directly in the cytoplasm. The membrane-bounded organelles are absent in a prokaryotic cell e.g., a bacterial cell.

  • Question 7
    1 / -0
    Prokaryotes, have a cell wall surrounding the cell membrane except in
    Solution
    Prokaryotes are the primitive organisms which lacks membrane-bound organelles and nucleus. Some bacteria do not possess cell wall - Mycoplasma. 
    Mycoplasma species are widespread examples and some can be intracellular pathogens that grow inside their hosts. This bacterial lifestyle is called as parasitic or saprophytic. Cell walls are unnecessary here because the cells only live in the controlled osmotic environment of other cells.
    So, the correct answer is option B.
  • Question 8
    1 / -0
    Genes present in the cytoplasm of eukaryotic cells are found in
    Solution
    Genes are present in the nucleus and also in genomes of chloroplast and mitochondria. Since chloroplast and mitochondria are cytoplasmic organelles; genes present in chloroplast and mitochondria follow cytoplasmic inheritance. This means that these genes are transmitted with cytoplasm. The female gamete contributes cytoplasm to the developing embryo. Therefore, the traits controlled by cytoplasmic factors follow maternal inheritance. Thus, the correct answer is option A.
  • Question 9
    1 / -0
    Which of the following statements is false about prokaryotes?
    Solution
    Prokaryotic cells are the primitive cells, which have disorganized nucleus. They do not have a nuclear membrane. These cells are devoid of membrane-bounded organelles like mitochondria, ER etc but possess large sized vacuole and small ribosomes (70 S). They are not specialized and lack division of labor. These are unicellular where a single cell performs all the functions e.g., bacterial cell.
    Thus, the correct answer is option B.
  • Question 10
    1 / -0
    Which of the following is a single membranous structure?
    Solution
    The nucleus is the double membrane bound organelle of eukaryotic cells that serve to house genetic material. The two membranes together make the nuclear envelope. Mitochondrion is double membrane bound organelle wherein the inner membrane is present as infolding and forms cristae. Cristae have respiratory enzymes and serve as site for cellular respiration. Chloroplast is double membrane-bound organelle in which the inner membrane surrounds the alkaline stroma and thylakoid system. Lysosomes, present in the cytoplasm, are the suicidal bags of cell that digest and remove the wear and tear organelles and molecules from the cell. They are enclosed by the single unit membrane . So, the correct answer is option A.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now