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5 Written Questions
5 Matching Questions
- Buffering system
- Organic chemistry
- Secondary structure
- a A branch of chemistry concerned with compounds that have carbon as their central element.
- b A form of molecule that has the same chemical formula but a different spatial arrangement than another molecule. (Because of their different shapes, they can have different properties.)
- c A steroid molecule that forms part of the outer membrane of all animal cells (and that acts as a precursor for many other steroids, among them the hormones estrogen and testosterone.)
- d A physiological system that functions to keep pH within normal limits in an organism. (They generally utilize weak acids or bases to neutralize any sudden infusion of acids or bases.)
- e The structure proteins assume after having folded up.
5 Multiple Choice Questions
- The large-scale twists and turns in a protein conformation.
- A complex carbohydrate that gives shape and strength to the external skeleton of arthropods (including insects, spiders and crustaceans.)
- An organic molecule that always contains carbon, hydrogen and oxygen (and that, in many instances, contains nothing but those three elements. They usually contain exactly twice as many hydrogen atoms as oxygen atoms. The building blocks, or monomers, are monosaccharides which combine to create the polymers, the polysaccharides such as starch and cellulose.)
- A series of amino acids linked in linear fashion. (They fold up to become proteins.)
- The primary information-bearing molecule of life, (composed of two chains of nucleotides, linked together in the form of a double-helix. Proteins are put together in accordance with the information encoded in this.)
5 True/False Questions
Quaternary structure → The way in which two or more polypeptide chains come together to form a protein.
Functional group → A phosphorus atom surrounded by four oxygen atoms.
Alkaline → Any substance that yields hydrogen ions when in solution. (Has a number lower than 7 on the pH scale.)
Ribonucleic acid (RNA) → A nucleic acid that is active in the synthesis of proteins and that forms part of the structure of ribosomes. (Variety includes messenger, transfer and ribosomal.)
Acid → A class of biological molecules whose defining characteristic is their relative insolubility in water. (Examples include triglycerides, cholesterol, steroids and phospholipids.)