[غريبـ فيـ زمنـ عجيبـ]

نموذج 12 بالحل






Question of chapter : Training 1

1.The middle tier is characterized by the………., an individual living thing

. () Tissues. () population. () Organism. () Organs. () Community



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2.In which of the following, the genetic material is not surroundedby a nuclear membrane? (Rep)

. () Plants. () Animals. () Fungi. () Bacteria. () Protozoa




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3.The ears of the jackrabbit is the best example that describes

organization. () regulation. () growth and development. () energy processing(bolism). () reproduction




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4.A _________ is supported by a large diversity of observations and usually growing body of evidence.

. () fact. () theory. () principle. () doctrine. () hypothesis




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5.Atoms of an element which have the same atomic number, but differ in mass number are named

. () isoenzymes. () isotopes. () isophores. () isolates. () isoelectrons




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6.Ice floats because it

. () is denser than liquid water.. () has the same density of water.. () is less dense than liquid water.. () it contains less hydrogen bonds.. () None of the above.




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7.A water molecule can dissociate into a hydrogen ion H+ and a __________ ion, this dissociation has important biological consequences.

. () hydroxide. () positive. () aqueous. () hydronium. () none of the above




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8.Cells make large molecules by joining smaller molecules into chairs called ______.

.micromolecules. () macromolecules. () polymers. () menomers. ()
b+ c are correct choices ()




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