A false positive result is best described as one that is given
1. by a substance other than that being tested for
2.when the substance being tested for is present in large amounts
3. when substance being tested for is present in minute quantities
4.when substance being tested for is absent
Posted Date:-2021-02-22 06:33:52
In the ABO system, blood group ‘O’ is characterized by the:
1.presence of antigen O
2.presence of both antigen A and antigen B
3. absence of both antigen A and antigen B
4.presence of antigen A and absence of antigen B
Posted Date:-2021-02-22 06:33:52
In the context of the ABO blood group, a transfusion of AB blood may be given to a person who has blood type
1.A
2.O
3.B
4.AB
Posted Date:-2021-02-22 06:33:52
In yeast, the sexual reproduction is by conjugation. After fusion, the zygotic nucleus divides meiotically and forms haploid spores. The unicellular structure with haploid spores is
1.Gametangium
2.Zoosporangium
3.Sporangium
4. Ascus
Posted Date:-2021-02-22 06:33:52
Repetitive regeneration can be seen in
1.Molluscs
2.Tadpole
3.Hydra
4. None of these
Posted Date:-2021-02-22 06:33:52
Restorative regeneration is _______.
1. Healing of wounds
2. Formation of a new entity from a piece of the body of the parent
3. A regular process in which the dead and worn-out cells of some organs are continuously replaced by new cells
4.All of these
Posted Date:-2021-02-22 06:33:52
The method of asexual reproduction that can be called as a mode of regeneration is
1.fragmentation
2.budding
3.sporulation
4.binary fission
Posted Date:-2021-02-22 06:33:52
Which of the following features differs archaebacteria from eubacteria?
1.Cell shape
2.Mode of nutrition
3.Mode of reproduction
4.Cell membrane structure
Posted Date:-2021-02-22 06:33:52
Which of the following organs can be regenerated in Echinodermata?
1. Eyes
2.Pedicellariae
3.Arms and disc
4.Digestive system
Posted Date:-2021-02-22 06:33:52
After the new classification of living organisms into three domains of life (bacteria, archaea and eukarya) which one of the following is true about archaea?
1.Resembles eukarya in all respects
2. Completely differ from prokaryotes
3. Completely differ from both eukaryotes and prokaryotes
4.Have some novel features that are absent in other eukaryotes and prokaryotes
Posted Date:-2021-02-22 06:33:52
All three types of plastids have evolved from _________.
1.Leucoplast
2.Chloroplast
3.Pro-plastid
4. Chromoplast
Posted Date:-2021-02-22 06:33:52
Antiserum is
1.blood serum containing specific antibodies
2.blood serum containing specific antigens
3. blood serum containing a mixture of antigens and antibodies
4. blood serum in which antigens and antibodies are both absent
Posted Date:-2021-02-22 06:33:52
Cancer is related to
1.Non-malignant tumor
2.uncontrolled growth of tissues
3.controlled division of tissues
4.none of the above
Posted Date:-2021-02-22 06:33:52
Fret channels are associated with _________
1. Two lamellae of a granum
2. Two grana of a chloroplast
3.Two quantasomes
4.Two plastids of a cell
Posted Date:-2021-02-22 06:33:52
Fungus without mycelium is
1.Agaricus
2.Albugo
3. Puccinia
4.Saccharomyces
Posted Date:-2021-02-22 06:33:52
Human blood types in the ABO blood group are identified by
1.clotting factors in plasma
2.microscopic examination of white blood cells
3.antigen-antibody reactions
4.series of enzyme controlled reactions
Posted Date:-2021-02-22 06:33:52
Cancerous cells are more easily damaged by radiation than normal cells as they
1.differ in structure
2.undergo rapid division
3. are nutrition-starved
4.none of these
Posted Date:-2021-02-22 06:33:52
If a blood type ends in + (positive) that means
1. your attitude is positive
2. you are positive for an Rh protein
3.you are positive you know your blood type
4. + sign at the end is insignificant
Posted Date:-2021-02-22 06:33:52
In manufacture of bread, it becomes porous due to the liberation of CO2 by the action of
1.Yeast
2.Virus
3. Protozoans
4.Bacteria
Posted Date:-2021-02-22 06:33:52
Methanococcus, Thermococcus and Methanobacterium exemplify
1.bacteria that contain a cytoskeleton and ribosomes
2.bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
3.archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled
4. archaebacteria that contain protein homologous to eukaryotic core histones
Posted Date:-2021-02-22 06:33:52
Methanogens belong to_______.
1.Eubacteria
2.Dinoflagellates
3.Slime moulds
4.Archaebacteria
Posted Date:-2021-02-22 06:33:52
Most abundant prokaryotes helpful to humans in making curd from milk and in the production of antibiotics are the ones categorized as _______.
1.Archaebacteria
2.Cyanobacteria
3. Heterotrophic bacteria
4.Chemosynthetic autotrophs
Posted Date:-2021-02-22 06:33:52
Plant cells and animal cells differ from each other in having ________.
1.Vacuole
2. Centrosome
3. Plastid
4.Golgi body
Posted Date:-2021-02-22 06:33:52
Plastids are absent in ________.
1.Fungi
2.Bacteria
3. Blue-green algae
4.All of the above
Posted Date:-2021-02-22 06:33:52
Plastids are present in ______
1.Euglenoides
2.Plants
3. Both (a) and (b)
4.All protists
Posted Date:-2021-02-22 06:33:52
Red blood cells that do not contain either A or B antigens on their surface are normally found in the person with blood type
1.A
2.O
3.B
4.AB
Posted Date:-2021-02-22 06:33:52
Regeneration can be seen in which of the following
1.Plasmodium
2.Spongilla
3.Earthworm
4.Starfish
Posted Date:-2021-02-22 06:33:52
Some hyperthermophilic organisms that grow in highly acidic (pH2) habitats belong to the two groups called _______.
1.Cyanobacteria and Diatoms
2.Liverworts and Yeasts
3.Protists and Mosses
4.Eubacteria and Archaea
Posted Date:-2021-02-22 06:33:52
The damaged leg is not regenerated in______.
1. Frog
2.Crab
3.Salamander
4. Frog’s tadpole
Posted Date:-2021-02-22 06:33:52
The food reserve in Albugo usually is
1. Fat
2.Protein granules
3.Glycogen
4.Volutin granules
Posted Date:-2021-02-22 06:33:52
The nucleus of cancerous cells becomes
1.Unchanged
2.Degenerated
3.Abnormally large
4.Hypertrophied
Posted Date:-2021-02-22 06:33:52
The repair by cell division in the damaged tissue is called ______.
1.Exponential growth
2.Deaccelerating growth
3. Epimorphosis regeneration
4.Morphallaxis regeneration
Posted Date:-2021-02-22 06:33:52
The rising of dough is due to
1.sulphur dioxide
2.hydrogen
3.carbon dioxide
4.oxygen
Posted Date:-2021-02-22 06:33:52
The species causing white rust of cruciferae has a botanical name, it is
1.Pythium debaryanum
2.Peronospora parasitica
3.Albugo candida
4.Puccinia graminis
Posted Date:-2021-02-22 06:33:52
This is used in the preparation of alcohol
1.Saccharomyces
2.Acetobacter
3.Lactobacillus
4.Penicillium
Posted Date:-2021-02-22 06:33:52
This statement on Albugo is incorrect
1.Non-flagellated female gametes
2.Biflagellated zoospores
3.Biflagellated male gametes
4.All of these
Posted Date:-2021-02-22 06:33:52
Under this circumstance, an antigen-antibody reaction will occur. A person with
1.Type A blood is given type O blood
2. Type AB blood is given type O blood
3.Type O blood is given type A blood
4.Type AB blood is given type B blood
Posted Date:-2021-02-22 06:33:52
When typing blood, a positive reaction
1.shows which antigens are present
2.shows clumping
3.helps deduce which blood type the sample is
4.all of the above
Posted Date:-2021-02-22 06:33:52
Which antibodies are found in the plasma of a person with type A blood?
1.anti-A, but not anti B
2.neither anti-A nor anti B
3. both anti-A and anti B
4.anti-B, but not anti-A
Posted Date:-2021-02-22 06:33:52
Which of the following are likely to be present into the deep seawater?
1.Eubacteria
2.Archaebacteria
3.Saprophytic fungi
4.Blue-green algae
Posted Date:-2021-02-22 06:33:52
Which of the following bacteria thrive in extreme environmental conditions, such as high temperature and acidic pH, the absence of oxygen and high salt concentration?
1.Eubacteria
2.Cyanobacteria
3.Archaebacteria
4.All of the above
Posted Date:-2021-02-22 06:33:52
Which of the following bacterium is found in extreme saline conditions?
1.Eubacteria
2.Mycobacteria
3.Archaebacteria
4.Cyanobacteria
Posted Date:-2021-02-22 06:33:52
Which of the following cell organelle are found only in a plant cell?
1.Plastids
2.Mitochondria
3.Golgi complex
4. Ribosomes
Posted Date:-2021-02-22 06:33:52
Which of the following is a common feature of plastids and mitochondria?
1.Both have Double-stranded DNA
2.Both contain 70s ribosomes
3.Both are double membranous cell organelles
4.All of the above.
Posted Date:-2021-02-22 06:33:52
Which of the following is not a colourless plastid?
1. Amyloplast
2.Elaioplast
3.Rhodoplast
4.Proteinoplast
Posted Date:-2021-02-22 06:33:52
Which of the following species lack plastids?
1.Fungi and animals
2. Plants and animals
3.Bacterium, animals and fungi
4.None of the above
Posted Date:-2021-02-22 06:33:52
Which of the following statement is true for archaebacteria?
1.Archaebacteria are fossils
2.Archaebacteria are halophiles
3.Archaebacteria are photosynthetic
4.Archaebacteria are old living entities
Posted Date:-2021-02-22 06:33:52
Which of the following type of plastids helps in pollination?
1.Leucoplasts
2.Chloroplasts
3. Chromoplasts
4.All of the above
Posted Date:-2021-02-22 06:33:52
Yeast is not included in protozoans but in fungi because
1.it has eukaryotic organization
2.cell wall is made up of cellulose and reserve food material as starch
3.Some fungal hyphae grow in such a way that they give the appearance of pseudomycelium
4. it has no chlorophyll
Posted Date:-2021-02-22 06:33:52
Yeast produces an enzyme complex, which is responsible for fermentation. Which is the enzyme complex?
1.Zymase
2.Dehydrogenase
3.Aldolase
4. Invertase
Posted Date:-2021-02-22 06:33:52