All scientific research begins with _____. a. a prediction b. an experiment c. a

Question

All scientific research begins with _____. a. a prediction b. an experiment c. an observation d. a hypothesis A good scientific study ______. a. has controls b. has a testable question c. is repeatable and verifiable d. all the above Atoms share _____ to make a molecule. a. proton b. neutron c. electron d. all of these Which property of water makes it likely to dissolve other substances and also to be attracted to other water molecules? a. water is polar b. water is hydrophobic c. water is nonpolar d. water is a solute Capillary action describes _____. a. water's affinity for other water molecules b. water's affinity for other types of molecules c. water's ability to travel up a very narrow tube made of polar molecules d. water's ability to travel up a very narrow tube made of nonpolar molecules 13. Which of these cups is holding a base? a. cup A b. cup B c. cup C d. cups A and B Carbohydrates are also known as _______. a. fats b. sugars c. DNA

Explanation / Answer

10 D hypothesis

Each scientific study starts with generating a hypothesis which is most likely explanation of the problem.

11 D all of above

A good scientific study needs to have all listed featured it should be repeatable verifiable, can be retested etc.

12 C electrons

Electrons present in outermost shell of the atom are involved in chemical reactions.

13 a polar nature

It helps to generate binding between solute and solvent that leads to solubility of substances.

14

15 A

A figure has more hydroxyl ions than compared to protons. This is characteristic of base.

16 b sugars

Carbohydrates are also called sugars

17 d amino acids

Proteins are polymers of amino acids.

18 C Polymer

DNA is a macromolecules also called polynucleotide. It is a polymer of nucleotides

19 d all of above protein in a cell performs function of transport recognition receptors etc.

20 a diffusion

It is movement of particles from region of their high concentration to low concentration.

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