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43 Cards in this Set
- Front
- Back
What is biology? |
the study of life |
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What is the difference between prokaryotes and eukaryotes? |
there's nucleus and membrane bound organelles in eukaryotes |
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What do plants release to the atmosphere? |
oxygen |
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What do plants convert to form chemical energy? |
light |
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What converts light energy to chemical energy? |
plants in photosynthesis |
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What is the maintenance of a stable internal environment? |
homeostasis |
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What is hypothesis? |
a testable statement |
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What bonds are broken in water when it evaporates? |
hydrogen |
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What is surface tension? |
hydrogen bonds upon the surface of water |
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How does water move in plants, against gravity? |
cohesion, adhesion - both of which use hydrogen bonds |
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What are hydrogen bonds? |
attraction of a partial negative to a partial positive |
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Why are some covalent bonds polar? |
differing electronegatives |
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What is the importance of a control group? |
basis for knowing if the results are due to the variables tested |
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Experiments test what? |
hypothesis |
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At what temperature is water most dense? |
4 degrees C |
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Why does ice float? |
hydrogen bonds in ice are farther apart than in liquid water |
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What is the pH of a solution with a hydroxide concentration of 10^-4? |
10 |
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What types of bonds are formed by carbon? |
covalent |
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What function do carbohydrates serve in animals? |
energy storage |
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Name two polysaccharides |
glycogen and starch |
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What level of protein folding creates the 3 dimensional shape? |
tertiary |
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What bond is formed when two amino acids bond together? |
peptide |
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Where are phospholipids most commonly found? |
cell membrane |
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What are the components of chloroplasts? |
stroma, grana, thylakoids |
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What are the major structural components of the cell membrane? |
phospholipids, proteins |
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What is diffusion? |
molecules moving from high concentration to low concentration |
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What is active transport? |
molecules move against the concentration gradient with energy |
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What is oxygen's role in cellular respiration? |
accepting electrons in ETC |
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What is the function of the Krebs cycle? |
produces ATP, NADH, FADH2, release CO2 |
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Where does most of the energy come from in cellular respiration? |
ETC |
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What donates electrons to the ETC? |
NADH |
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What is the role of anaerobic respiration? |
convert pyruvate to lactate and regenerate NAD+ |
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What is the end result of mitosis? |
2 identical nuclei |
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How many chromosomes are in the ovum of an organism that has 48 chromosomes? |
24 |
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How many unique gametes could be formed from AABbCCddEe? |
4 |
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What is the probability of having a son? |
1/2 |
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What does a 3:1 ratio in a monohybrid cross suggest? |
heterozygous parents |
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What does a 9:3:3:1 ratio suggest? |
heterozygous parents |
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In flowers with incomplete dominance determine the percent of offspring that have pink flowers when the parents had red and white flowers? |
100% |
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What is polygenic inheritance? |
more than one gene for a trait - range of phenotypes (skin color) |
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What did Griffith observe in mice during his transformation experiments? |
conversion of bacteria to pathogenic form |
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What type of bond is between the bases of DNA? |
hydrogen |
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If gene codes for 12,000 nucleotides, but only 200 are used for the protein, what could explain this phenomenon? |
introns (parts of the mRNA is edited out) and exons (expressed sequences) |