Tag: comparison of prokaryotic vs eukaryotic cells

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Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

An animal cell, a plant cell and a bacterium share the following structural features.

  1. Cell membrane, endoplasmic reticulum, vacuoles

  2. Cell wall, plasma membrane, mitochondria

  3. Cell wall, nucleus, cytoplasm

  4. Plasma membrane, cytoplasm, ribosomes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Animal cell, plant cell and bacterium have plasma membrane, cytoplasm and ribosomes as common parts. Cell organelles and nucleus are absent in bacterial cell but present in animal and plant cells.

So, D is the correct option. 

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Choose the difference between prokaryotes and eukaryotes?

  1. Prokaryotes have RNA, eukaryotes have DNA.

  2. Prokaryotes have a nucleoid, eukaryotes have a nucleus.

  3. Prokaryotes have DNA, eukaryotes have RNA.

  4. Prokaryotes have a nucleus, eukaryotes have a nucleoid.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Prokaryotic cells are primitive cells. They do not possess many membrane bound organelles as mitochondria, lysosomes etc. They also do not have well defined membrane bound nucleus. Nuclear material of a prokaryotic cell consists of a single chromosome which is in direct contact with cytoplasm. Here, the undefined nuclear region in the cytoplasm is called as nucleoid, i.e., there is no nuclear membrane. 

Eukaryotes possess well defined nucleus and membrane bound organelles as mitochondria, Golgi complex, etc. Nucleus is bound with double membrane in eukaryotic cell in which most of the genetic material is present. 

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

The main difference between the prokaryotic cell and the eukaryotic cell is that in the prokaryotic cell there is no

  1. Mitochondria

  2. Cell wall

  3. Genetic system

  4. Distinct nucleus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the prokaryotic cell, there is no definite nucleus with a nuclear membrane. But the genetic material is distributed throughout the cytoplasm of the cell. Along with some of them may have cell wall and mitochondria.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

All animals are eukaryotes and multi-cellular.

  1. True

  2. False

  3. Ambiguous

  4. Data insufficient
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Organisms are divided into five kingdoms by R.H.Whittaker. According to this classification all the prokaryotes and unicellular organisms are grouped under kingdom Monera and some in kingdom Protista.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

The numbers of vacuoles are __________ in animals are compared to plants.

  1. More

  2. Less

  3. Same

  4. Can't define
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants don't have excretory system, thus possess larger vacuole to store their waste metabolites. Whereas animals have comparatively smaller vacuoles used for storage's of food materials. Thus the number of vacuoles in animal cell would be larger due to its size as compared to plants.

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Bacteria differ from eukaryotes in absence of

  1. DNA

  2. Basic proteins

  3. Histones

  4. Both B and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Prokaryotic cells synthesize a set of small, usually basic proteins that bind DNA and are collectively called histone- like proteins because their biochemical properties resemble eukaryotic histones but histones are absent in Bacteria

So, the correct answer is 'Histones'

Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Cell wall is absent in

  1. Mycoplasma

  2. Gametes

  3. Animal cells

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Cell wall is composed of cellulose and it is mostly prominent in plant cell. It provides structural frame work to the cell and provides strength and rigidity to the cell.
Mycoplasma lacks cell wall around its plasma membrane which makes it resistant towards common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis.
Gametes are the haploid cells which is lined by basal germinal epithelium.
Animal cell lacks the cell wall and starts with the plasma membrane.
So, the correct answer is option D.
Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Which is correct option amongst the following statements?
(a) Nuclear membrane, chloroplast, mitochondria, microtubules and pili are absent in prokaryotic cells.
(b) Nuclear membrane, chloroplast, mitochondria, microtubules and pili are present in eukaryotic cells
(c) Ribosomes are 70S in prokaryotic cells and mitochondria. They are 80 S in animal cells.

  1. a and b are wrong, c is correct

  2. a is correct, b and c are wrong

  3. a and b are correct, c is wrong

  4. a and c are correct, b is wrong

  5. a, b and c are wrong
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Pilus refers to a thin and rigid hair-like appendage that protrudes from the cell surface of bacteria (prokaryotic cell) and is responsible for bacterial conjugation.
  • They are absent in eukaryotic cells.
  • The ribosomes present in a bacteria and the cellular organelles (mitochondria and chloroplasts) are 70S type and those present in a eukaryotic cell (both plants and animals) are 80S type.
  • So, the correct answer is 'a and b are wrong, c is correct'.
Multiple choice biology organization of life comparison of prokaryotic vs eukaryotic cells prokaryotic cell and eukaryotic cell types of cell

Plant cell differs from animal cell by

  1. Presence of vacuoles

  2. Presence of cell wall and chloroplast

  3. Absence at cell wall

  4. Absence of chloroplast.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plant and animal cells have several differences and similarities. For example, animal cells do not have a cell wall or chloroplasts but plant cells do. Animal cells are mostly round and irregular in shape while plant cells have fixed, rectangular shapes.

Hence B is the correct option.