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32 Cards in this Set
- Front
- Back
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1. Which of the following elements is the most electronegative?
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*d) oxygen
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2. Atoms like oxygen that are highly electronegative:
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*b) have a strong pull towards other atoms’ electrons
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3. Collagen structure is dependent on a modified amino acid, hydroxyproline, which is formed in the body using Vitamin C. The disease associated with Vitamin C deficiency and faulty collagen is called:
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*d) scurvy
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4. Which properties are characteristic of DNA?
(1) Double -stranded (2) Nucleotide bases ACUG (3) deoxy-ribose sugar (4) Temporary carrier of genetic info in the cell |
*b) 1 and 3
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5. Which of the following sequences would be transcribed from the DNA sequence below according to base- pairing rules?
ACTGCTTA (ignore direction) |
*d) UGACGAAU
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6. In biology, when surface area is favored over volume, structures are:
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*b) branched or folded
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7. Energy from ATP, a nucleotide, comes from:
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*c) the phosphate group
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8. Enzymes (biological catalysts) come primarily from which branch of macromolecules?
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*a) proteins
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9. The energy currency of the cell is:
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*c) ATP
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10. Aquatic mammals like seals and walruses stay underwater by:
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*b) expressing more myoglobin
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11. Sickle cell disease is caused by a ______ mutation that changes the gene sequence by ______.
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*c) hemoglobin, one nucleotide
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12. Fetal hemoglobin binds oxygen:
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*a) tighter than adult hemoglobin
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13. Which of he following organelles is thought to have an endosymbiotic origin?
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*c) mitochondria and chloroplasts
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14. Proteins are polymers made up of:
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*a) amino acids
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15. It takes ________ nucleotide(s) to code for one amino acid.
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*c) three
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16. The fluid mosaic model refers to:
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*d) the fluid nature of the cell membrane and the many proteins imbedded in the cell membrane
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17. Cholesterol and saturated fats imbedded into lipid rafts in the cell membrane make that portion of the membrane:
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*a) more solid
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18. The tree of life, which orders organisms based on their relatedness, confirms that:
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*a) archae are most similar to eukaryotes
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19. The difference between starch and cellulose is:
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*d) starch monomers are all facing the same direction, cellulose monomers are not
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20. The most abundant macromolecule on earth is:
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*b) cellulose
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21. The domain of cellular life also known as “extremophiles” are the:
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*a) archae
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22. According to the video “Origins” shown in class Stanley Miller’s experiments simulating the formation of life produced
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*c) amino acids
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23. According to the video “Origins” shown in class, the harsh conditions of early earth would have included:
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a) intense radiation b) high temperatures c) heavy bombardment of objects from space
*d) all of the above |
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24. According to the video “Origins” shown in class, the conditions on early earth may have meant that life initially started:
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*c) underneath the surface of land or sea
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25. Hemoglobin binds most tightly in the:
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a) crocodile b) human *c) llama
d) mouse |
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26. One piece of evidence that suggests mitochondria are endosymbionts is that:
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*c) mitochondria have their own DNA
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27. Fatty acids that are more _______________ tend to be solid at room temperature because of _______________.
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*c) Saturated, increased packing
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28. Which of the following “molecules of life” form the most effective barrier to water and other polar molecules?
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*b) lipids (fats)
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29. Which of the following is not a property of water that allows it to support life?
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*d) The polarity of water allows it to bond to lipids
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30. Collagen is a protein exclusively found in:
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*b) animals
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31. Pineapple contains a protein-degrading enzyme that prevents it from being used when making gelatin (Jello) products. Another word for gelatin, an animal bi-product is most likely to be:
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*d) collagen
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32. Lactose intolerance, a condition common to many ethnic groups and most adult mammals throughout the world is not a problem to some humans because:
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*b) they express the lactase enzyme into adulthood
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