Bacteria: types and structure - class-XI
Description: bacteria: types and structure | |
Number of Questions: 76 | |
Created by: Prabha Kade | |
Tags: classification of plants kingdom monera, protista and fungi cell and cell organelles world of microbes botany microbes biology biological classification structural and functional unit of our body - the cell the world of microbes living world living world and classification of microbes cell structure and micro-organisms micro organisms bacteria |
Hens egg is
A bacteria attaches to the host cell with the help of bristle-like structure is called
Which one of the following is an example of unicellular organism?
Which one of the following is the example of unicellular organism?
Amoeba is said to be a ...........organism.
True nucleus is absent in
Bacteria are made up of
A unicellular organism has
Which of the following is the location of mucilage capsule present in bacteria which serves as an extra covering?
Lifecycle of Saccharomyces cerevisiae is
Bacteria are-
Oidia resemble yeast in?
Select the wrong statements.
A. Pyruvic acid decarboxylase and alcohol dehydrogenase catalyse fermentation.
B. $NADH+H^+$ is reoxidised to $NAD^+$ in alcohol and lactic acid fermentation.
C. Yeasts poison themselves to death when the concentration of alcohol reaches about $31$ percent.
D. Prolonged fermentation results greater alcohol contents in alcohol beverages.
Bacterial genome consist of
The meiospores of yeast are nonmotile and called?
Which of the following microtubule arrangement is absent in the kinetosome of eukaryotic flagella?
The bacterial cell wall is made up of
Match the contents of Column-I with of Column-II.
Colum-I | Column-II | ||
---|---|---|---|
A | Monascus purpurens | i | Statins |
B | Aspergillus niger | ii | Cyclosporin-A |
C | Trichoderma polysporum | iii | Citric acid |
The bacteria which lacks flagella and moves by gliding are included in?
Bacteroides are?
Membrane bound organelles are absent in
Yeast is ________.
Which of the following is common features of Amoeba?
A cancer which is not a tumor is _____________.
DNA of E.coli
Muramic acid is present in cell walls of
The body of Amoeba is made up of .......... cell.
Cocci that remain in chains after dividing are called ...........
What are the major groups of microorganisms?
Unicellular organisms are capable of (i) Independent existence (ii) Performing the essential functions of life
Many bacteria bear minute hairy structures on their cell wall which are involved in genetic transfer are called as
Escherichia colt has the following combination of characters.
Binary fission in Amoeba involves ____________.
Torula condition' occurs in ________.
Amoeba takes food through ____________.
Histological differentiation is absent in ____________.
Which of the following is a photo-autotrophic bacterium
In Amoeba, the cell division takes place ____
Some bacteria are considered plants as they
In bacteria the site for respiratory activity is found in
Sex factor of bacteria is
Which is not true of bacterial cell wall?
Murein of bacterial cell wall is derivative of
Bacterial cell membrane is made up of
Teichoic acid is present in cell wall of
Some bacteria have a capsule outside cell wall. It is made of
Why is a capsule advantageous to a bacterium?
Ageing is slow or absent in
Select the wrong statement of a bacterial cell
Which one of the following is absent in eukaryotes?
DNA of Escherichia coli is
Mitochondria are absent in
Alga Acetobularia is
Bacteria with tuft of flagella at one pole are
Bacteria having a tuft of flagella at both the poles are
A bacterial cell contains.
Which one of the following statements correctly disguises Nitrosamines and Nitrobacteria?
$NH _3$ in amoeba is excreted through
Entamoeba histolytica is transmitted through
How many young Amoebae hatch out from a cyst of E. histolytica?
Which one of the following is the basis of biological control of crown gall?
Match items in Column I with those in Column II -
Column I | Column II |
---|---|
(A) Peritrichous flagellation | (J) Ginkgo |
(B) Living fossil | (K) Macrocystes |
(C) Rhizophore | (L) Escherichia coli |
(D) Smallest flowering plant | (M) Selaginella |
(E) Largest Perennial alga | (N) Wolffia |
Select the correct answer with the following
Which one of the following is the most important criterion used to classify living organisms into three primary kingdoms, namely-Archaea, Eubacteria and Eukarya?
Rhodopseudomonas and Rhodospirillum are ______________.
Yeast die when alcohol concentration reaches about $13$%, still yeast perform alcholic fermentation why?
Cell division is a type of reproduction in
Choose the correct answers from the alternatives given.
Surface appendages used by -bacteria to attach to one another and to host organisms are called:
Which of the following organisms do not depend on reproduction to exchange genetic information?
Select the pair that shows the same relationship as the animals in the box.
Amoeba : Paramecium.
Amoeba and Yeast reproduce asexually by fission and budding respectively, because they are.
Which of the following pairs of an animal and a plant represents endangered organisms in India?
Superbugs are
Which cell organelle is absent in anaerobic bacteria?
State whether the following statements are true or false.
All denitrifying bacteria are heterotrophs.
Commercial lac is produced from .............