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Questions and Answers
Cholesterol plays a role in controlling fluidity and adding sturdiness to the membrane.
True
Sobrang titigas yung bilayer when there is too little cholesterol present.
False
Membrane Lipids are unipathic, consisting of 1 polar head and 2 nonpolar tails.
False
The hydrophobic part of a membrane lipid is composed of hydrocarbons.
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Peripheral proteins are attached to both sides of the lipid bilayer.
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Receptors on cell membranes can only interact with ligands and not viruses or bacteria.
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The specific heat of water is 1.0 calorie per gram, which is lower than other liquids.
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If the temperature of water changes rapidly, it can lead to climate change, flooding, and typhoons.
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When we sweat, the warmer layer on top of the skin has high heat energy.
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Water's high heat of vaporization means it vaporizes quickly compared to other liquids.
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The cohesive behavior of water is due to its extensive network of hydrogen bonded molecules.
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If you immerse a stem with flowers in colored dye, the color of the flower will not change after 10 minutes.
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A single carbon atom is conductive and can conduct electricity.
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Bucky balls, which are made up of many carbons grouped together, were synthesized more than 2 decades ago.
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The octet rule states that an atom is stable when it has 6 electrons in its outermost shell.
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In H2O, the unequal sharing of electrons results in hydrogen having a partial negative charge.
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Carbon is considered stable when it has 8 electrons in its outermost shell.
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Direction of arrows pointing towards oxygen in a molecule indicate polarity because oxygen is less electronegative.
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Valence is defined as the number of electrons needed to make an atom stable and complete the 8 electrons in the outermost shell, following the octet rule.
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Chitin, a fibrous substance in arthropod exoskeletons, is made up of monosaccharides.
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Cellulose, found in plant cell walls, is made up of long chains of glucose molecules connected by ionic bonds.
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Humans can digest cellulosic material easily due to the presence of specific enzymes.
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Researchers have studied termites because they are interested in their ability to produce bioethanol.
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The primary structure of proteins becomes functional as soon as it is synthesized.
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Lipids are different from other macromolecules because they consist of repeating subunits like proteins and nucleic acids.
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Most macromolecules are structural in nature, such as cellulose and chitin.
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Cellulose is composed of layers or chains of alpha glucose.
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Amylose and amylopectin are both components of starch.
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Glycogen serves as a storage molecule for glucose in plant cells.
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The addition of each monomer to form macromolecules occurs by the addition of a water molecule.
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ATP provides the energy required to couple a monomer to a carrier molecule during polymerization.
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