[غريبـ فيـ زمنـ عجيبـ]

نموذج 13 بالحل






Question of chapter : Training 1

1.Which of the following statements about evolution is TRUE?

evolution is the scientific study of life. () evolution is the process of giving new individuals. () evolution is the interaction between living organisms. () evolution is the process that requires several species. () evolution is the process of change that transforms life.




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2.In a prokaryotic cell the ________ is not surrounded by a nuclear membrane.

Golgi apparatus. () Lysosome. () Vacuole. () Peroxisome. () Genetic material




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3.The genetic (hereditary) material of human is:

. () Proteins. () Carbohydrates. () Lipids. () DNA. () Glycoprotein




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4.Why do scientists develop a hypothesis before conducting research?

It gives them direction on how to interpret the results of their research.. () It helps to predict outcomes and define the parameters of the research.. () Hypotheses give the researcher an outcome to shape their work around.. () Hypotheses help a researcher decide which observations to record and ignore.. () None of the above




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5.PET is useful for diagnosing

viral diseases and in brain research. () heart disorders, cancer and in brain research. () cancer and bacterial diseases. () heart disorders and viral diseases. () heart disorders and bacterial diseases




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6._____ is the clinging of one substance to another.

. () Surface tension. () Cohesion. () Adhesion. () Attraction. () Collection



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7.________ are the substances that minimize changes in Ph.

Acidic solutions. () Neutral solutions. () Buffers. () Aqueous solutions. () Unipolar compounds



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8.Carbon skeletons vary in length, branching, double bonds or -------------

arrangement in rings. () weight. () density. () d)concentration. () height




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