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
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
All three types of plastids have evolved from _________.
1.Leucoplast
2.Chloroplast
3.Pro-plastid
4. Chromoplast
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
 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
 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
 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
 Repetitive regeneration can be seen in
1.Molluscs
2.Tadpole
3.Hydra
4. None of these
 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
 The method of asexual reproduction that can be called as a mode of regeneration is
1.fragmentation
2.budding
3.sporulation
4.binary fission
 Which of the following features differs archaebacteria from eubacteria?
1.Cell shape
2.Mode of nutrition
3.Mode of reproduction
4.Cell membrane structure
 Which of the following organs can be regenerated in Echinodermata?
1. Eyes
2.Pedicellariae
3.Arms and disc
4.Digestive system
Cancer is related to
1.Non-malignant tumor
2.uncontrolled growth of tissues
3.controlled division of tissues
4.none of the above
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
Fungus without mycelium is
1.Agaricus
2.Albugo
3. Puccinia
4.Saccharomyces
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
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
In manufacture of bread, it becomes porous due to the liberation of CO2Â by the action of
1.Yeast
2.Virus
3. Protozoans
4.Bacteria
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
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
Methanogens belong to_______.
1.Eubacteria
2.Dinoflagellates
3.Slime moulds
4.Archaebacteria
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
Plant cells and animal cells differ from each other in having ________.
1.Vacuole
2. Centrosome
3. Plastid
4.Golgi body
Plastids are absent in ________.
1.Fungi
2.Bacteria
3. Blue-green algae
4.All of the above
Plastids are present in ______
1.Euglenoides
2.Plants
3. Both (a) and (b)
4.All protists
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
Regeneration can be seen in which of the following
1.Plasmodium
2.Spongilla
3.Earthworm
4.Starfish
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
The damaged leg is not regenerated in______.
1. Frog
2.Crab
3.Salamander
4. Frog’s tadpole
The food reserve in Albugo usually is
1. Fat
2.Protein granules
3.Glycogen
4.Volutin granules
The nucleus of cancerous cells becomes
1.Unchanged
2.Degenerated
3.Abnormally large
4.Hypertrophied
The repair by cell division in the damaged tissue is called ______.
1.Exponential growth
2.Deaccelerating growth
3. Epimorphosis regeneration
4.Morphallaxis regeneration
The rising of dough is due to
1.sulphur dioxide
2.hydrogen
3.carbon dioxide
4.oxygen
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
This is used in the preparation of alcohol
1.Saccharomyces
2.Acetobacter
3.Lactobacillus
4.Penicillium
This statement on Albugo is incorrect
1.Non-flagellated female gametes
2.Biflagellated zoospores
3.Biflagellated male gametes
4.All of these
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
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
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
Which of the following are likely to be present into the deep seawater?
1.Eubacteria
2.Archaebacteria
3.Saprophytic fungi
4.Blue-green algae
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
Which of the following bacterium is found in extreme saline conditions?
1.Eubacteria
2.Mycobacteria
3.Archaebacteria
4.Cyanobacteria
Which of the following cell organelle are found only in a plant cell?
1.Plastids
2.Mitochondria
3.Golgi complex
4. Ribosomes
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.
Which of the following is not a colourless plastid?
1. Amyloplast
2.Elaioplast
3.Rhodoplast
4.Proteinoplast
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
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
Which of the following type of plastids helps in pollination?
1.Leucoplasts
2.Chloroplasts
3. Chromoplasts
4.All of the above
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
Yeast produces an enzyme complex, which is responsible for fermentation. Which is the enzyme complex?
1.Zymase
2.Dehydrogenase
3.Aldolase
4. Invertase