Download UConn Biology 1107 Final Review Exam With Complete Solutions 2025-2026!! and more Exams Biology in PDF only on Docsity!
UConn Biology 1 107 Final Review Exam With Complete
Solutions 2025 - 2026 !!
Which of the following categories includes all others in the list?
A.) monosaccharide B.) polysaccharide C.) disaccharide D.) starch E.) carbohydrate - ANSWER>>E.) carbohydrate
Which bonds are created during the formation of the primary structure of a protein?
A.) disulfide bonds B.) phosphodiester bonds C.) hydrogen bonds D.) peptide bonds E.) peptide bonds, hydrogen bonds, and disulfide bonds - ANSWER>>D.) peptide bonds
If cells are grown in a medium containing radioactive 35S, which of these molecules will be labeled?
A.) phospholipids B.) both proteins and nucleic acids C.) proteins D.) amylose
E.) nucleic acids - ANSWER>>C.) proteins
The bonding of two amino acid molecules to form a larger molecule requires
A.) the release of a water molecule B.) the addition of a water molecule C.) the addition of a nitrogen atom D.) the release of a nitrous oxide molecule E.) the release of a carbon dioxide molecule - ANSWER>>A.) the release of a water molecule
Which of the following is true of both starch and cellulose?
A.) They can both be digested by humans B.) They are both polymers of glucose C.) They are both structural components of the plant cell wall D.) They are both used for energy storage in plants E.) They are cis-trans isomers of each other - ANSWER>>B.) They are both polymers of glucose
At which level of protein structure are interactions between the side chains (R groups) most important?
A.) primary B.) quaternary C.) tertiary D.) secondary E.) all of the above - ANSWER>>C.) tertiary
Dehydration reactions are used in forming which of the following compounds?
A.) polysaccharides B.) proteins C.) triacylglycerides, polysaccharides, and proteins D.) triacylglycerides and proteins only E.) triacylglycerides - ANSWER>>C.) triacylglycerides, polysaccharides, and proteins
Which chemical group is most likely to be responsible for an organic molecule behaving as a base?
A.) amino B.) hydroxyl C.) carbonyl D.) carboxyl E.) phosphate - ANSWER>>B.) hydroxyl
Which of the following is not a polymer?
A.) DNA B.) cellulose C.) chitin D.) starch E.) glucose - ANSWER>>E.) glucose
Which of these molecules is not formed by dehydration reactions?
A.) amylose B.) disaccharides C.) DNA D.) protein E.) fatty acids - ANSWER>>E.) fatty acids
The tertiary structure of a protein is the
A.) bonding together of several polypeptide chains by weak bonds. B.) overall protein structure resulting from the aggregation of two or more polypeptide subunits. C.) unique three-dimensional shape of the fully folded polypeptide. D.) organization of a polypeptide chain into an alpha helix or pleated sheet. E.) order in which the amino acids are joined in a polypeptide chain. - ANSWER>>C.) unique three-dimensional shape of the fully folded polypeptide.
Which type of bond must be broken for water to vaporize?
A.) both hydrogen bonds and ionic bonds B.) both polar covalent bonds and hydrogen bonds C.) ionic bonds D.) polar covalent bonds E.) hydrogen bonds - ANSWER>>E.) hydrogen bonds
Which two functional groups are always found in amino acids?
A.) ketone and methyl
E.) in the nucleus, mitochondria, and chloroplasts - ANSWER>>E.) in the nucleus, mitochondria, and chloroplasts
White blood cells engulf bacteria through what process?
A.) exocytosis B.) receptor-mediated exocytosis C.) osmosis D.) phagocytosis E.) pinocytosis - ANSWER>>D.) phagocytosis
When a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur?
A.) Plasmolysis will shrink the interior B.) The cell will become flaccid C.) The cell will become turgid D.) The cell membrane will lyse E.) the cell will burst - ANSWER>>C.) The cell will become turgid
The presence of cholesterol in the plasma membranes of some animals
A.) makes the animal more susceptible to circulatory disorders B.) enables the animal to remove hydrogen atoms from saturated phospholipids C.) enables the animal to add hydrogen atoms to unsaturated phospholipids D.) enables the membrane to stay fluid more easily when cell temperature drops E.) makes the membrane less flexible, allowing it to sustain greater pressure from within the cell - ANSWER>>D.) enables the membrane to stay fluid more easily when cell temperature drops
Which of the following would likely move through the lipid bilayer of a plasma membrane most rapidly?
A.) starch B.) CO C.) glucose D.) an amino acid E.) K+ - ANSWER>>B.) CO
Movement of vesicles within the cell depends on what cellular structures?
A.) centrioles and motor proteins B.) actin filaments and motor proteins C.) actin filaments and microtubules D.) microtubules and motor proteins E.) actin filaments and ribosomes - ANSWER>>D.) microtubules and motor proteins
Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm. Using this information, which transport mechanism is most probably functioning in the intestinal cells?
A.) phagocytosis B.) facilitated diffusion C.) exocytosis D.) simple diffusion E.) active transport pumps - ANSWER>>B.) facilitated diffusion
A.) peroxisome B.) vacuole C.) Golgi apparatus D.) lysosome E.) mitochondrion - ANSWER>>B.) vacuole
Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?
A.) lipids B.) cellulose C.) proteins D.) glycogen E.) nucleic acids - ANSWER>>C.) proteins
Which organelle is the primary site of ATP synthesis in eukaryotic cells?
A.) mitochondrion B.) lysosome C.) peroxisome D.) vacuole E.) Golgi apparatus - ANSWER>>A.) mitochondrion
A primary objective of cell fractionation is to
A.) determine the size of various organelles B.) view the structure of cell membranes
C.) separate the major organelles so that their particular function can be determined D.) separate lipid-soluble from water-soluble molecules E.) sort cells based on their size and weight - ANSWER>>C.) separate the major organelles so that their particular functions can be determined
Which of the following types of molecules are the major structural components of the cell membrane?
A.) nucleic acids and proteins B.) phospholipids and proteins C.) phospholipids and cellulose D.) glycoproteins and cholesterol E.) proteins and cellulose - ANSWER>>B.) phospholipids and proteins
Which structure is the site of the synthesis of proteins that may be exported from the cell?
A.) lysosomes B.) free cytoplasmic ribosomes C.) rough ER D.) plasmodesmata E.) Golgi vesicles - ANSWER>>C.) rough ER
All of the following are part of a prokaryotic cell except
A.) DNA B.) a plasma membrane C.) an endoplasmic reticulum
Hydrolytic enzymes must be segregated and packaged to prevent general destruction of cellular components. Which of the following organelles contains these hydrolytic enzymes in animal cells?
A.) chloroplast B.) lysosome C.) central vacuole D.) peroxisome E.) glyoxysome - ANSWER>>B.) lysosome
A chemical reaction that has a positive delta G is correctly described as
A.) endergonic B.) endothermic C.) enthalpic D.) spontaneous E.) exothermic - ANSWER>>A.) energonic
Which process in eukaryotic cells will proceed normally whether oxygen is present or absent?
A.) electron transport B.) glycolysis C.) the citric acid cycle D.) oxidative phosphorylation E.) chemiosmosis - ANSWER>>B.) glycolysis
Which of the following is an example of potential rather than kinetic energy?
A.) the muscle contraction of a person mowing grass B.) water rushing over Niagara Falls C.) light flashes emitted by a firefly D.) a molecule of glucose E.) the flight of an insect foraging for food - ANSWER>>D.) a molecule of glucose
Approximately how many molecules of ATP are produced from the complete oxidation of two molecules of glucose in aerobic cellular respiration?
A.) 2 B.) 4 C.) 15 D.) 30- E.) 60-64 - ANSWER>>E.) 60-
Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's
A.) entropy B.) activation energy C.) endothermic level D.) equilibrium point E.) free-energy content - ANSWER>>B.) activation energy
The ATP made during glycolysis is generated by
C.) The reaction always goes in the direction toward chemical equilibrium D.) Enzyme-catalyzed reactions require energy to activate the enzyme E.) Enzyme-catalyzed reactions release more free energy than noncatalyzed reactions - ANSWER>>A.) The reaction is father than the same reaction in the absence of the enzyme
Which of the following occurs in the cytosol of a eukaryotic cell?
A.) glycolysis and fermentation B.) fermentation and chemiosmosis C.) oxidation of pyruvate to acetyl CoA D.) citric acid cycle E.) oxidative phosphorylation - ANSWER>>A.) glycolysis and fermentation
Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?
A.) denaturization of the enzyme B.) allosteric inhibition C.) competitive inhibition D.) saturation of the enzyme activity E.) insufficient cofactors - ANSWER>>C.) competitive inhibition
Why are the carbohydrates and fats considered high energy foods?
A.) They have a lot of oxygen atoms B.) They have no nitrogen in their makeup C.) They can have very long carbon skeletons
D.) They have a lot of electrons associated with hydrogen E.) They are easily reduced - ANSWER>>D.) They have a lot of electrons associated with hydrogen
During aerobic respiration, electrons travel downhill in which sequence?
A.) food > citric acid cycle > ATP > NAD+ B.) food > NADH > electron transport chain > oxygen C.) glucose > pyruvate > ATP > oxygen D.) glucose > ATP > electron transport chain > NADH E.) food > glycolysis > citric acid cycle > NADH > ATP - ANSWER>>B.) food > NADH > electron transport chain > oxygen
Which of the following statements describes the results of this reaction? C6H12O6 + 6 O2 > 6 CO2 + 6 H2O + Energy
A.) C6H12O6 is oxidized and O2 is reduced B.) O2 is oxidized and H2O is reduced C.) CO2 is reduced and O2 is oxidized D.) C6H12O6 is reduced and CO2 is oxidized E.) O2 is reduced and CO2 is oxidized - ANSWER>>A.) C6H12O6 is oxidized and O2 is reduced
A cell with a predominance of free ribosomes is most likely
A.) producing primarily proteins for secretion B.) producing primarily cytoplasmic proteins C.) constructing an extensive cell wall or extracellular matrix D.) digesting large food particles
A.) yield energy in the form of ATP as it is passed down the respiratory chain B.) act as an acceptor for electrons and hydrogen, forming water C.) combine with carbon, forming CO D.) combine with lactate, forming pyruvate E.) catalyze the reactions of glycolysis - ANSWER>>B.) act as an acceptor for electrons and hydrogen, forming water
When the skeletal muscle cells undergo anaerobic respiration, they become fatigued and painful. This is now known to be caused by
A.) buildup of pyruvate B.) buildup of lactate C.) increase in sodium ions D.) increase in potassium ions E.) increase in ethanol - ANSWER>>B.) buildup of lactate
How does a noncompetitive inhibitor decrease the rate of an enzyme reaction?
A.) by binding at the active site of the enzyme B.) by changing the shape of the enzyme's active site C.) by changing the free energy change of the reaction D.) by acting as a coenzyme for the reaction E.) by decreasing the activation energy of the reaction - ANSWER>>B.) by changing the shape of the enzyme's active site
A sexually reproducing animal has two unlinked genes, one for the head shape (H) and one for tail length (T). Its genotype is HhTt. Which the following genotypes is possible in a gamete from this organism?
A.) HT
B.) Hh C.) HhTt D.) T E.) tt - ANSWER>>A.) HT
Tallness (T) in snapdragons is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) flower color. A dwarf, homozygous red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1 individuals?
A) ttRr — dwarf and pink B) ttrr — dwarf and white C) TtRr — tall and red D) TtRr — tall and pink E) TTRR — tall and red - ANSWER>>D) TtRr — tall and pink
In a cross AaBbCc x AaBbCc, what is the probability of producing the genotype AABBCC?
A.) 1/ B.) 1/ C.) 1/ D.) 1/ E.) 1/64 - ANSWER>>E.) 1/
In the cells of some organisms, mitosis occurs without cytokinesis. This will result in
