Unit 1 Clicker Questions Atomic mass of 197 atomic number of 79 how many protons are in the ectotherms body temperatures are determined by the environment nucleus o 79 o True Halophiles love what o High salt nucleus o 118 nucleus o 79 Atomic mass of 197 atomic number of 79 how many neutrons are in the Atomic mass of 197 atomic number of 79 how many electrons are in the What do elements with atomic numbers 6 14 and 22 have in common o Same valence and will form the same number of covalent bonds How much NaCl 58 44 Da would you need to make 1 liter of a 2 molar solution o 116 88 g o 120 g How much NaOH 40 Da would you need to have 3 moles Can you have 1 molar solution of insulin 5727 Da o No o 6 o 2 o True o 5 o 12 o 9 Oxygen has an atomic number of 8 how many valence electrons does it have Oxygen has an atomic number of 8 what is the valence of oxygen Freeze tolerant organisms seed ice formation to control the rate of ice formation true or false Unequal sharing of electron pairs in a covalent bond polar covalent bond or nonpolar covalent bond o Polar covalent bond Beginning with a solution of pH 8 you increase the H by a factor of 1000 what is the new pH of the solution Beginning with a solution of pOH 5 you increase the OH by a factor of 1000 what is the new pH of the solution Beginning with a solution of pH 7 you decrease the H by a factor of 100 what is the new pH of the solution Which atom is more electronegative Na or Cl Sodium or Chlorine Is the covalent bond in H 2 polar or nonpolar o Cl Chlorine o Nonpolar Synthesis of a polymer involves what o Involves the removal of a water molecule Lipids are not soluble in water because they are made up of what o Nonpolar groups Compared to tropical fish artic fish oils have what o More unsaturated fatty acids Components of a triglyceride o Glycerol and fatty acids Carbohydrate energy storage form in animals o Glycogen All lipids o Do not dissolve well in water A carboxyl group is characteristic of what o An acid The synthesis of a protein from amino acids involves what o Removal of water Hydrophobic groups do what o Are nonpolar and minimize their reaction with water The R group of amino acid glycine is H What type of R group is this o Nonpolar Alpha helix and beta pleated sheets are what o Secondary structures Which amino acids are found in the interior of a protein o Nonpolar amino acids The sickle cell hemoglobin mutation alters what level s of protein structure o Primary tertiary and quaternary What bonds are responsible for primary structure What bonds are responsible for secondary structure o Peptide and covalent o Hydrogen and weak false o True Colligative concentration equivalent to 1 M glucose o 1 M sucrose and 5 M NaCl Antifreeze peptides have what secondary structure o Helical Unit 1 quizzes A colligative property depends on the number of dissolved molecules true or A particular carbon isotope has an atomic number of 6 and an atomic mass of 14 The respective number of neutrons protons and electrons that this carbon isotope has is what Atomic chlorine has an atomic number of 17 It has how many electrons in its o 8 6 and 6 third shell o 7 A hydrogen bond is what o A weak chemical bond A polar covalent bond is a bond that what o Has shared electrons pulled closer to the more electronegative atom The number of protons in an uncharged atom equals what o Equals the number of electrons When the proton number and electron number are unequal the atom or molecule is what o It is an ion Ionic bonds form as a result of what o Attraction between atoms that have opposite charges An atom that normally has how many electrons in its outer shell would not tend to form chemical bonds with other atoms o 8 electrons Hydrogen bonds occur when what happens o A partial opposite charges on molecules come close to attract each The chemical characteristics or reactivity of an element depend mostly on other the what o Number of electrons in its outermost shell Water molecules have what than molecules of similar size such as ammonia and methane o A higher boiling point Hydrophilic substances but not hydrophobic substances have what o Have charges and partial charges to which water molecules can adhere The ability of water molecules to form hydrogen bonds with other water molecules and water s ability to dissolve substances that have charges or partial charges are what o Both caused by water s partial charges The amount of heat required to change the temperature of 1 g of any substance by 1 C is defined as what o The specific heat of that substance Water is a very versatile solvent because water molecules are what A glass of grapefruit juice at pH 3 contains how much more H as a glass of o Polar tomato juice at pH 4 o Ten times as much Sweating has a cooling effect because of water s high what o Heat of vaporization Because molecules of water are farther apart in ice than in liquid water what happens o Ice floats The partial charges on a water molecule occur because of what o The unequal sharing of electrons between the hydrogen and the oxygen atoms of a water molecule Hydroxyl is to what as what is to aldehyde o Alcohol carbonyl Nucleotides are to what as what are to produce o Nucleic acids amino acids Bacterial cells are prokaryotic unlike a typical eukaryotic cell they what o Have no membrane bounded organelles in their cytoplasm What features do prokaryotes and eukaryotes have in common o Ribosomes plasma membrane cytoplasm This observation that chloroplasts and mitochondria each contain their own DNA and synthesize some of the proteins that function in these organelles suggests that chloroplasts and mitochondria do what o Must divide each time the cell containing them divides In terms of cellular function what is the most important difference between prokaryotic and eukaryotic cells o Compartmentalization of the cytoplasm by membrane bounded organelles occurs in eukaryotic cells
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