Science Group
Explore subjects and practice MCQs
10
Chapters
1,000
Total MCQs
Unit-1 The Science of Biology
Answer: Moving the decimal one place to the right gives 5, so the exponent is -1.
Answer: 0.00025 = 2.5 x 10^-4 because the decimal moves four places to the right.
Answer: Data collected in an experiment is recorded and analyzed to draw conclusions.
Answer: Scientists analyze the experimental results before concluding whether the hypothesis is accepted or rejected.
Answer: Laws are also called principles, for example Mendel's laws are known as principles.
Answer: The scientific method is a systematic approach to solving problems.
Answer: Chemical bond level is not a level of biological organization.
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Answer: A lake with its living and non-living parts forms an ecosystem.
Answer: Members of one species in a given area form a population.
Answer: Interactions of organisms with each other and the environment are studied at the ecosystem level.
Answer: A positive exponent shifts the decimal to the right, giving a number greater than 10.
Answer: A negative exponent shifts the decimal to the left, giving a number less than 1.
Answer: The decimal moves seven places to the right, giving 5.6 x 10^-7.
Answer: An unsupported hypothesis is rejected or modified and then tested again.
Answer: A hypothesis must be testable so that experiments can confirm or reject it.
Answer: Epidemiology deals with disease occurrence, spread and control in populations.
Answer: The biosphere includes parts of the lithosphere, hydrosphere and atmosphere where life exists.
Answer: Ribosomes are organelles found inside cells.
Answer: Organelles such as mitochondria and ribosomes are present within cells.
Answer: Animal husbandry deals with the care and breeding of livestock.