Hard Science

What are the four biomolecules?

• adenine, guanine, cytosine, and thymine

• water, air, earth, and fire

• sodium, oxygen, hydrogen, and nitrogen

• proteins, carbohydrates, nucleic acids, and lipids

Physicist J.J. Thomson's atomic model, sometimes called the plum-pudding model, describes the atom as taking which configuration?

• positively charged matter in which negatively charged electrons are embedded

• a dense, positive nucleus surrounded by electrons revolving in a set number of specific orbits

• negative electrons occupying specific shells extending outward from a dense, positive nucleus

• a dense, positively charged nucleus orbited by negatively charged electrons

It refers to the observable characteristics, including physical appearance of an individual. It includes not only easily measured traits like hair color but also less apparent ones such as blood type.

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Where do most weather changes occur?

• Troposphere

• Mesosphere

• Stratosphere

• Thermosphere

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Which of the following does not belong to the group?

• Frictional Force

• Normal Force

• Tension Force

• Gravitational Force

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Which frozen gas forms dry ice?

What does DNA stands for?

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Which of the gas is not known as green house gas?

• Methane

• Carbon Dioxide

• Nitrous Oxide

• Hydrogen

Oil, natural gas and coal are examples of _____.

• Fossil Fuels

• Biofuels

• Renewable Resources

• Geothermal Resources

Carbon is an element found in organic compounds. Its atomic number is 6 and its atomic mass is 12. How many protons and electrons are there in a Carbon atom?

• 6 protons and 12 electrons

• 12 protons and 6 electrons

• 6 protons and 6 electrons

• 6 protons and 18 electrons

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