Bio 105 exam 1 practice questions With complete Solutions

The four main categories of bio-molecules are? - ANS Proteins, Nucleic acids, Lipids, Carbohydrates What type of bond holds together the parts of a water molecule? - ANS Polar covalent bond What is the basic unit of structure and function of living things? - ANS A cell If the most common form of Carbon has 6 protons, 6 neutrons, and 6 electrons. Which elements would be an Isotope of carbon? - ANS An atom with 6 protons, 8 neutrons, and 6 electrons The alpha helix and beta represent which level of protein structure? - ANS Secondary structure Which of these are not a lipid? A. Phospholipid B. Cholesteral C. Estrogen D. RNA - ANS D. RNA A hydrophilic molecule... - ANS Will attract to polar molecule Which is the process of by which cells link monomers together to form polymers and by doing this water is produced? - ANS dehydration synthesis (dehydration reaction) A monosaccharide is to a carbohydrate as... - ANS An amino acid to a protein A peptide bond is... - ANS A covalent bond What determines the types of chemical reactions that an atom participates in? - ANS The number of electrons in the outermost shell What polysaccharide do plants use to store energy? - ANS Starch What domain are prokaryotic cells found? - ANS Bacteria and Archaea What is the sequence of biological organization from simplest to the most complex? - ANS cell, tissue, organ, organism Which is not one of the characteristics of life? A. Adaptations B. Organization C. Mutations D. Maintain homeostasis - ANS C. Mutations An elements atomic mass is determined by? - ANS The number of protons and neutrons in an atom In what type of reaction is water used to break the covalent bonds between molecules? - ANS Hydrolysis reaction Which is not part of the four kingdoms of Eukarya? A. Protists B. Plants C. Archaea D. Animals - ANS C. Archaea What is a substance that cannot be broken into substances with different properties? - ANS An element According to the octet rule, an atom is stable with how many electrons in the outer shell? - ANS 8 A....bond happens when electrons are transferred from one atom to another. - ANS Ionic bond Multiple water molecules are held together by what type of bond? - ANS Hydrogen bonds .....are made up of a glycerol, two fatty acids, and a phosphate group - ANS Phospholipds Which term doesn't relate to the others? A. nucleic acid B. nucleotide C. amino acid D. dna - ANS C. Amino acid Which is not a function of proteins? A. metabolism B. Support C. Long term storage D. Transport - ANS Long term storage Which subcategory of a lipid displays itself in a 4 carbon ring? - ANS Steriod Prokaryotic cells differ from eukaryotic cells because prokaryotic cells contain a ? - ANS Nucleoid What is needed for reactions like dehydration synthesis and hydrolysis to work properly? - ANS An enzyme Which of the following would be an example of a dissaccharide? - ANS Lactose When phospholipids line up to form the phospholipid bi layer, the....lineup to face the polar water - ANS Heads A _______ bond shares the electrons between the two elements. - ANS Covalent What is the monomer of a carbohydrate? - ANS Monosaccharide What is the main function of the smooth Endoplasmic Reticulum? - ANS Lipid synthesis Which of these is not a domain? bacteria, protista, archaea, eukarya - ANS Protista What is the smallest unit of living things? - ANS cell Where is most of a Eukaryotic cell's DNA contained? - ANS Nucleus