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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 12401. |
Ligase is used in genetic engineering to. |
| A. | open bacterial plasmids |
| B. | cut genes from a donor chromosome |
| C. | seal genes into bacterial plasmids |
| D. | remove cell walls from plant cells |
| Answer» D. remove cell walls from plant cells | |
| 12402. |
In an animal, habituation has taken place when a. |
| A. | harmful stimulus no longer produces a response. |
| B. | harmful stimulus always produces an escape response. |
| C. | harmless stimulus always produces an escape response. |
| D. | harmless stimulus no longer produces an escape response. |
| Answer» E. | |
| 12403. |
Which of the following processes requires flexibility and infolding of the cell membrane? |
| A. | Osmosis |
| B. | Diffusion |
| C. | Phagocytosis |
| D. | Active Transport |
| Answer» D. Active Transport | |
| 12404. |
Which of the following is not a mutagenic agent? |
| A. | Mustard Gas |
| B. | Citric Acid |
| C. | Caffeine |
| D. | Sun Light |
| Answer» C. Caffeine | |
| 12405. |
Which of the following may result in the presence of an extra chromosome in the cells of a human ? |
| A. | Inversion |
| B. | Non-disjunction |
| C. | Crossing over |
| D. | Independent Assortment |
| Answer» C. Crossing over | |
| 12406. |
Obesity is associated with defects in membrane |
| A. | Carrier protein |
| B. | Channel protein |
| C. | Receptor protein |
| D. | Signal protein |
| Answer» B. Channel protein | |
| 12407. |
Which organelle is involved in the packaging and secretion of proteins and phospholipids? |
| A. | Plasma membrane |
| B. | Nucleolus |
| C. | Golgi apparatus |
| D. | microtubules |
| Answer» D. microtubules | |
| 12408. |
Granum is associated with |
| A. | Energy generation |
| B. | Photosynthesis |
| C. | Lipid synthesis |
| D. | Protein synthesis |
| Answer» C. Lipid synthesis | |
| 12409. |
Plant cell walls contain: |
| A. | cellulose and are selectively permeable to water. |
| B. | phospholipds and are permeable to solutes. |
| C. | phospholipids and are selectively permeable to solutes. |
| D. | cellulose and are permeable to solutes. |
| Answer» E. | |
| 12410. |
Which one of the following is NOT an organelle? |
| A. | Mitochondria |
| B. | RNA |
| C. | Golgi complex |
| D. | Vacuole |
| Answer» C. Golgi complex | |
| 12411. |
When a plant cell is immersed in a hypotonic solution it will: |
| A. | become flaccid. |
| B. | shrink. |
| C. | burst. |
| D. | become turgid. |
| Answer» E. | |
| 12412. |
First level of processing/modification of proteins occurs in |
| A. | Golgi apparatus |
| B. | Smooth endoplasmic reticulum |
| C. | Rough endoplasmic reticulum |
| D. | Lysosomes |
| Answer» D. Lysosomes | |
| 12413. |
The separation of the Archaebacteria into a separate domain indicates.. |
| A. | that these organisms are very different from eubacteria and from eukaryotes |
| B. | that organisms should never be classified according to how they appear (morphological characteristics) |
| C. | that early taxonomists rushed to classify them without closely examining them |
| D. | none of the above |
| Answer» B. that organisms should never be classified according to how they appear (morphological characteristics) | |
| 12414. |
Which is a dumping site for the cell? |
| A. | Mitochondria |
| B. | Cloroplast |
| C. | Centrosome |
| D. | Vacuole |
| Answer» E. | |
| 12415. |
Cladistic taxonomy places the birds as Archosaurs, along with the ? |
| A. | mammals |
| B. | crocodilians |
| C. | turtles |
| D. | none of the above |
| Answer» C. turtles | |
| 12416. |
Which one of the following is associated with energy generation in cells? |
| A. | Mitochondria |
| B. | Choloroplast |
| C. | Ribosomes |
| D. | Lysosome |
| Answer» B. Choloroplast | |
| 12417. |
Cell membrane is a mosaic of.. |
| A. | phospholipds |
| B. | peripheral proteins |
| C. | sugars |
| D. | phospholpids and proteins |
| Answer» E. | |
| 12418. |
You might find methanogens: |
| A. | in swamps |
| B. | in a cow's stomach |
| C. | in marshes |
| D. | all of the above |
| Answer» E. | |
| 12419. |
Throughout the world, official species names are in.. |
| A. | Latin |
| B. | Greek |
| C. | English |
| D. | French |
| Answer» B. Greek | |
| 12420. |
The oldest level of taxonomic classification is |
| A. | class |
| B. | family |
| C. | genus |
| D. | phylum |
| Answer» D. phylum | |
| 12421. |
At the present time, scientists have named approximately ____ species. |
| A. | 100,000 |
| B. | 500,000 |
| C. | 1,000,000 |
| D. | 1,500,000 |
| Answer» E. | |
| 12422. |
A kingdom that also comprises a domain is |
| A. | Eubacteria |
| B. | Protista |
| C. | Fungi |
| D. | Prokaryota |
| Answer» B. Protista | |
| 12423. |
Which one of the following sequences shows the correct hierarchy of classification, going from the most inclusive to the least inclusive ? |
| A. | Kingdom, Domain, Phylum, Order, Class, Family, Genus, Species |
| B. | Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species |
| C. | Genus, Species, Kingdom, Phylum, Order, Class, Family |
| D. | Species, Genus, Family, Class, Order, Phylum, Kingdom |
| Answer» C. Genus, Species, Kingdom, Phylum, Order, Class, Family | |
| 12424. |
A taxon consisting of the most closely related species is called a(n) ________________. |
| A. | family |
| B. | order |
| C. | genus |
| D. | phylum |
| Answer» D. phylum | |
| 12425. |
Multicellular organisms and unicellular yeasts are contained in |
| A. | Animalia |
| B. | Plantae |
| C. | Protista |
| D. | Fungi |
| Answer» E. | |
| 12426. |
The binomial system of classification was developed by: |
| A. | Darwin |
| B. | Wallace |
| C. | Linnaeus |
| D. | Malthus |
| Answer» D. Malthus | |
| 12427. |
In printing scientific names, it is conventional for only the _______________ to be underlined or italicized. |
| A. | binomial |
| B. | genus |
| C. | species |
| D. | division |
| Answer» B. genus | |
| 12428. |
In the early 1700's, the classification system used was ____ . |
| A. | polynomial |
| B. | pentanomial |
| C. | binomial |
| D. | tetranomial |
| Answer» B. pentanomial | |
| 12429. |
In printed scientific names, only the _______________ is capitalized. |
| A. | family |
| B. | class |
| C. | species |
| D. | kingdom |
| Answer» E. | |
| 12430. |
In plant taxonomy, a division is the equivalent to _______________ . |
| A. | family |
| B. | order |
| C. | class |
| D. | phylum |
| Answer» E. | |
| 12431. |
Characteristics that have arisen as a result of common evolutionary descent are said to be.. |
| A. | analogous |
| B. | homogenous |
| C. | heterogamous |
| D. | homologous |
| Answer» E. | |
| 12432. |
Of the six kingdoms now recognized . |
| A. | two are plants and four are animals |
| B. | four are eukaryotes and two are prokaryotes |
| C. | four are macroscopic and two are microscopic |
| D. | two are eukaryotes and four are prokaryotes |
| Answer» C. four are macroscopic and two are microscopic | |
| 12433. |
Unicellular eukaryotes are grouped into |
| A. | Fungi and protists |
| B. | Fungi and Eubacteria |
| C. | only protists |
| D. | only Fungi |
| Answer» B. Fungi and Eubacteria | |
| 12434. |
In the current taxonomic system, families are grouped into _____ . |
| A. | classes |
| B. | phyla |
| C. | orders |
| D. | divisions |
| Answer» D. divisions | |
| 12435. |
A related group of genera comprise. |
| A. | an order |
| B. | a family |
| C. | a class |
| D. | a phylum |
| Answer» C. a class | |
| 12436. |
Prokaryotic organisms make up the. |
| A. | Archaebacteria, Eubacteria, and Protists |
| B. | Archaebacteria and Protists |
| C. | Protists and Eubacteria |
| D. | Eubacteria and Archaebacteria |
| Answer» E. | |
| 12437. |
When writing species epithets, it is sometimes permissible to abbreviate the _______________ name. |
| A. | phylum |
| B. | order |
| C. | family |
| D. | genus |
| Answer» E. | |
| 12438. |
A major problem with polynomial names was that they were |
| A. | inaccurate |
| B. | cumbersome |
| C. | not descriptive |
| D. | in Latin |
| Answer» C. not descriptive | |
| 12439. |
The plant alternation of generations is characterized by _______________ meiosis. |
| A. | zygotic |
| B. | somatic |
| C. | sporic |
| D. | generic |
| Answer» D. generic | |
| 12440. |
Viruses are assigned to the kingdom . |
| A. | Protista |
| B. | Eubacteria |
| C. | Fungi |
| D. | none of the above |
| Answer» E. | |
| 12441. |
True multicellularity occurs only in. |
| A. | animals |
| B. | plants and animals |
| C. | plants, animals and protists |
| D. | plants, animals and fungi |
| Answer» E. | |
| 12442. |
Viruses are denied a kingdom of their own because |
| A. | they are too poorly understood |
| B. | they are too small |
| C. | their genetics cannot be determined |
| D. | they are not organisms |
| Answer» E. | |
| 12443. |
Acupuncture is ______ ? |
| A. | A disease of heart |
| B. | Servicing of tubes u0026 tyres |
| C. | A crop culture |
| D. | A method of treatment with needles |
| Answer» E. | |
| 12444. |
The enzyme that converts glucose to ethyl alcohol is ______ . |
| A. | Diastase |
| B. | Zymase |
| C. | Maltase |
| D. | Invertase |
| Answer» C. Maltase | |
| 12445. |
A group of organisms at any particular level in a classification system is called is ? |
| A. | species |
| B. | genus |
| C. | taxon |
| D. | phylum |
| Answer» D. phylum | |
| 12446. |
Scientific names higher than genus are |
| A. | capitalized but not printed distinctively, italicized, or underlined |
| B. | italicized or underlined |
| C. | capitalized and italicized or underlined |
| D. | italicized or underlined with the first word capitalized |
| Answer» B. italicized or underlined | |
| 12447. |
When applied to the affected area, which one of the following will relieve the pain due to ant-bite or bee-sting ? |
| A. | Baking soda |
| B. | Caustic soda |
| C. | Vinegar |
| D. | Lemon Juice |
| Answer» B. Caustic soda | |
| 12448. |
As a practical definition of species, one can say that they are a group of organisms characterized by all of the following except they |
| A. | do not normally interbreed with other species in nature |
| B. | can be distinguished from other species |
| C. | are incapable of hybridization with other species |
| D. | remain relatively constant |
| Answer» D. remain relatively constant | |
| 12449. |
The institution of the classification level of domain was prompted by |
| A. | the overabundance of kingdoms |
| B. | cladistics |
| C. | great differences among bacteria |
| D. | the taxonomic problem presented by viruses |
| Answer» D. the taxonomic problem presented by viruses | |
| 12450. |
Liver oil of fish is rich in... |
| A. | Vitamin E |
| B. | Vitamin C |
| C. | Vitamin D |
| D. | Vitamin A |
| Answer» E. | |