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A chain of amino acids linked together end-to-end can only be found in a
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Lipids are the only class of macromolecules that contain
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Bio test #1 part 2
| Question | Answer |
|---|---|
| A chain of amino acids linked together end-to-end can only be found in a | polypeptide |
| Lipids are the only class of macromolecules that contain | fatty acids |
| Two carbon atoms might be joined to each other by the sharing of two pairs of electrons, forming a(n) | double bond. |
| DNA, RNA, and ATP contain functional units known as | nucleotides. |
| Four of the following five are functions of carbohydrates. Select the exception. | Glucose is a carbohydrate that is utilized by all life forms in the construction of nucleotides. |
| Carbohydrates are polymers formed of structural units called | monosaccharides. |
| DNA and RNA are similar in some respects and different in others. Which of the following statements is not accurate about their similarities? | Both DNA and RNA always double helices. |
| In the crystal matrix of ordinary salt, the sodium and chlorine are held together by | ionic bonds. |
| The simplest and most common monosaccharide is a sex-carbon sugar called | glucose. |
| Mendeleev found that when he arranged elements according to their atomic mass, they formed a pattern of groups of eight. This led to the generalization now known as | octet rule |
| Ordinary oxygen has an atomic mass of 16 and an atomic number of 8. This means that the number of neutrons in this type of oxygen is | 8. |
| Chitin, a modified form of cellulose, is not only cross-linked with proteins but also its glucose units are modified with atoms of | nitrogen. |
| Water molecules are attracted to each other because of the opposite charges created by partial charge separations within the molecules. These attractions are called | hydrogen bonds. |
| Water molecules are polar with ends that exhibit partial positive and negative charges. Such opposite charges make water molecules attract each other through bonds called | hydrogen bonds. |
| Atoms in which the number of electrons does not equal the number of protons are known as | ions. |
| When atoms gain or lose electrons, they become negatively or positively charged. They are known as | ions. |
| Capillary action is one of the forces that aids water's upward movement in plants. The more narrow the diameter of the tube, the farther the water column will rise. Capillary action is a result of water molecules | having an adhesive force, which allows them to attach to the vessel walls. |
| When two atoms share a pair of electrons, the bonding is referred to as | covalent. |
Created by:
evie mcintyre