1 st semester midterm. 18.what are the 4 main macromolecules and give their main function? (pages...
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1st Semester Midterm
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18.What are the 4 main macromolecules and give their main function? (pages 45-47)
• Carbohydrates-
• Proteins-
• Lipids-
• Nucleic acid-
energyForms bones & muscle
stores fat
DNA
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19.Draw the 4 different macromolecule structures. (pages 45-47)
• (lipid-row of carbons with H above and below)
•Carbohydrate C+H+O
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19. Cont.
• Proteins C+H+O+N
•Nucleic acid (phosphate)
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20. What are the SPONCH elements? (notes) • Sulfur, Phosphorus, Oxygen, Nitrogen,
Carbon & Hydrogen
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21. What are the pH levels and what they mean? (p.43)
• 0-3 4-6 7 8-10 11-13
• Very slightly neutral slightly very
• acidic acidic basic basic
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22. Define the terms: (page 45) • Monomer- smallest unit-that combines to make
polymersPolymer- large compound made up of
monomers
Macromolecule- giant molecules made of many polymers
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23.What are the monomers/basic building blocks for the following? (pages 45-47)
• Carbohydrate- Sugar molecules/glucose/monosaccharides
Lipid- fatty acids & glycerol Protein- ( enzymes) amino acids Nucleic acid- nucleotides
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24. Describe the enzyme process. (p. 52-53)
• An enzyme (which is a type of protein) binds to a SPECIFIC substrate (like a puzzle piece or lock & key. It only can catalyze 1 type of substrate)
• Substrate reaction produces a product• When product produced the enzyme is released
to repeat. • Enzyme does not change only the substrate.
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25. Describe the main function of the enzyme (it’s a type of protein). (page 51)
• is a catalysts that speeds up reactions
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26. What affects the reaction of an enzyme?
(page 53) • Temperature, pH & concentration can
affect the catalyzing of an enzyme
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27.Make a Venn diagram of animal and plant cells. (pages 174-181)
• Cell wall ER centrioles • Chloroplasts Mitochondria possibly lysosomes • Brick like shape cell membrane Varies in shape
1 large vacuole bound Nucleus small vacuoles• Cytoplasm • golgi• ribosomes
Plant cell Both •Animal cell
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28.Define semi-permeable.• also called selectively permeable refers to
the cells and nuclear membranes ability to let only selected substances come in and out in an attempt to stay in homeostasis
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29. Describe the function of the following organelles: (pages 174-180)
• Cell membrane-
• Cytoplasm-
• Nucleus •-Control center of the cell
Semi-permeable outer layer of cell that regulates what enters and leaves the cell
•space within cell
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29 Cont.
• Rough ER-
•Golgi Body-
•Ribosomes- makes proteins
-transports proteins that ribosomes make and materials throughout the cell
•modifies, packages and distributes proteins
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29. Cont.
• Mitochondria-
•Smooth ER--
•Vacuole-
makes and modifies lipidsMakes energy (ATP) for the cell by breaking down glucose
•stores water and material for the cell •1 large one in plant—smaller ones in animals
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29. Cont. Chloroplasts-Absorbs and uses sunlight in plant cells
& photosynthesis occurs here
Cell Wall- Outside of a plant cell that gives support & protection-gives box-like shape
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30. Define and describe the passive transport methods:(p183-186)
• Passive transport is the moving of molecules WITHOUT energy
• from high to low concentration (crowded to not crowded areas)
• The 3 types are below
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30.Cont.Diffusion-
facilitated diffusion
•High to low concentration movement of small particles through the membrane without energy
High to low concentration movement of larger particles through channel proteins in the membrane without energy
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30. cont.• -osmosis-
diffusion of water -water moves to areas of high concentration of water molecules (low concentration of solute) to low concentration of water molecules(high concentration of solute)
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30. cont
• -turgor •filling of the vacuole in a plant cell
high-full vacuole= •healthy plant
low-empty vacuole= •wilting and plasmolysis
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31. What are the 2 layers of the cell membrane made of and where are the polar heads facing and where do the nonpolar tails facing? Who likes water and who doesn’t?
• Phospholipid bilayer with the polar heads facing inside and outside of the cell (loves water) and the nonpolar tails on the inside of the membrane (hates water)
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32. Define and describe the active transport
methods:• *Active transport requires ENERGY and goes
from an area of low concentration to an area of high concentration. Endocytosis and exocytosis are forms of active transport
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32. Cont.• - Endocytosis-
• -Exocytosis-
Taking of large particles or cells into the cell requires energy
•removing (exiting) of particles out of the cell requires energy
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33. Write the equation for photosynthesis.
• 6CO2 + 6H2O + (sunlight) C6H12O6 + 6O2• 6 carbon dioxides + 6 waters with sunlight are the
reactants producing 1 glucose and 6 oxygen
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34. What organelle does photosynthesis occur in?• Chloroplast
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35. Where does the light dependent process occur ?• Thykaloid discs where the chlorophyll
absorbs light except for reflecting green
•What goes in? H2O
What comes out? O2
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36. What goes in and comes out of the light dependent/Calvin
cycle?CO2 comes in and C6H12O6 comes out
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37. Write the cell respiration equation. • C6H12O6 + 6O2 6CO2 + 6H2O + ATP
• 1glucose + 6 oxygen molecules= 6 Carbon dioxide + 6 water molecules & ATP/energy
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38. What are the 3 processes in aerobic cell respiration and the amount of ATP produced.
• in order:• Glycolysis-• Kreb cycle-• ETC-• Total-
cytoplasm 2 ATP
Mitochondria 2ATPMitochondria 32ATP
36ATP in aerobic cellular respiration
***Anaerobic (without oxygen)
Only nets 2 ATP