Tag: bacteria

Questions Related to bacteria

Oidia resemble yeast in?

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. Fermentation

  2. Sexual reproduction

  3. Being diploid

  4. All of these

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Correct Option: A

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.

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. C and D

  2. A and B

  3. B and C

  4. A and D

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Correct Option: A

The meiospores of yeast are nonmotile and called?

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. Aeciospores

  2. Aplanospores

  3. Ascospores

  4. Basidispores

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Correct Option: A

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
botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. A-i, B-ii, C-iii

  2. A-i, B-iii, C-ii

  3. A-iii, B-i, C-ii

  4. A-ii, B-i, C-iii

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Correct Option: A

The bacteria which lacks flagella and moves by gliding are included in?

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. Spirochetes

  2. Rickettsia

  3. Myxobacteria

  4. Eubacteria

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Correct Option: A

Bacteroides are?

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. Enlarged non-motile cellular bacteria Rhizobium leguminosarum in root nodules of legumes

  2. A bacterial cell infected with viruses

  3. A motile bacterium

  4. Nitrosomonas bacteria in soil

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Correct Option: A

Yeast is ________.

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. Bacteria

  2. Protozoa

  3. Fungi

  4. Sponge

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Correct Option: A

Which of the following is common features of Amoeba?

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. Pseudopodia, food vacuole, phagocytosis, assimilation and egestion

  2. Phagocytosis, contractile vacuole, lysosome, holozoic and ingestion

  3. Contractile vacuole, absorption of food, egestion and grinding of food particles

  4. Pseudopodia, ciliary movement, contractile vacuole and phagocytosis

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Correct Option: A
Explanation:

An Amoeba is a type of organism belongs to kingdom Protista. They have the ability to alter its shape, primarily by extending and retracting pseudopods. Amoeba has contractile vacuole which expels excess water from the cell. The various processes which are involved in the nutrition of Amoeba are:
Ingestion, digestion, absorption, assimilation and egestion. Amoeba has not excretory organs. The undigested food collects inside the Amoeba is thrown out of the body by the cell membrane. Thus, the correct answer is option A.

The body of Amoeba is made up of .......... cell.

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects non cellular organism : virus world of virus

  1. Single

  2. Multiple

  3. Three

  4. Four

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Correct Option: A
Explanation:

Amoeba is a protozoan belonging to the kingdom Protista. They are unicellular eukaryotic organisms and thus, made up of single cell.

Cocci that remain in chains after dividing are called ...........

botany bacteria bacteria - introduction, shape and structure bacteria: types and structure bacteria; benefits and harmful effects

  1. Diplococci

  2. Tetrococci

  3. Streptococci

  4. Sarcinae

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Correct Option: C
Explanation:

Cocci that remain in pains after dividing are called diplococci. Cocci that remain in chains after dividing are called streptococci.