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BIO 108

QuestionAnswerQuestionAnswerQuestionAnswerQuestionAnswer
Cooking an egg until the clear runny part turns into a white solid is an example of, Denaturation, Lateral movements of phospholipids in the cell membrane are frequent, while flip-flop movements are rare True Substances dissolved in water are called ____________, and are surrounded by a sphere of water molecules, called the _____________. solutes........hydration shell Glucose is a D) hexose sugar
Prokaryotic cells, like bacteria, contain mitochondria, chloroplasts, and other, membrane-bound organelles False, Membranes rich in saturated fatty acids are more fluid than those dominated by unsaturated fatty acids. False A solution is found to contain 10-4 mol of hydrogen ions per liter. Which of the following best describes this solution? acidic: H+ donor Which of the following is NOT a polysaccharide?Starch AmyloseChitinCelluloseAmylopectinSucroseGlycogen Sucrose
The endomembrane system includes all of the following EXCEPT intermediate filaments Oxygen and Hydrogen are invisible, dry, explosive gases. Together they form water which is visible, wet, and inert. This illustrates the concept of, emergent properties “Every atom belonging to me as good belongs to you.” is a scientific, poetic, spiritual, eternal truth Unsaturated fatty acids: A) have one or more carbon-carbon double bondsB) have a kink or bend somewhereC) form oils at room temperatureD) increase membrane fluidityE) all of the aboveF) none of the above All of the above
Central vacuoles are found in ________ cells and can contain ______________, plant............toxins When the concentration gradient driving an ion across a membrane is equal to the electrical force moving those ions in the opposite direction, this is called, electrochemical equilibrium Which of the following is NOT a hydrocarbon?CH4, C2H6, Fatty acid tails, C6H12O6, or petroleum.. C6H12O6 Which of the following statements about cholesterol is NOT true?Steroid hormones are synthesized from cholesterol,Cholesterol is an important component in animal plasma membranes,Cholesterol is hydrophobic, Cholesterol can increase or decrease membrane fl All are true
The nucleolus, A) is where rRNA is synthesized to make ribosomal subunits One of the key distinctions between prokaryotic and eukaryotic cells is the presence of __________ , which is (are) lacking in __________ cells, mitochondria ... prokaryotic The cumulative evidence from biochemical turnover studies (i.e. how often macromolecules are replaced in the body) suggest that the entire body is renewed every 5-7 years ) Which type of organelle is primarily involved in the synthesis of oils, phospholipids, and steroids? smooth endoplasmic reticulum
_____________ ribosomes are located in the cytosol while __________ ribosomes are attached to the endoplasmic reticulum. free.............bound, Which four elements make up approximately 96% of living matter? carbon, hydrogen, nitrogen, oxygen, Which of the following contains nitrogen in addition to carbon, oxygen, and hydrogen? an amino acid such as glycine an alcohol such as ethanol a hydrocarbon such as benzene a monosaccharide such as starch a steroid such as testosterone an amino acid such as glycine All of the structures listed below are associated with cellular movement except A) cilia. B) myosin. C) flagella. D) actin. E) ribosomes. ribosomes.
Which of the following is NOT true regarding microtubules? D) They form a 9+2 arrangement inside microvilli The movement of sodium ions through a sodium channel is an example of, facilitated diffusion Which of the following functional groups is NOT hydrophilic?hydroxyl carbonyl carboxyl aminosulfhydryl phosphate All of the above are hydrophilic A cell has the following molecules and structures: proteins, DNA, ribosomes, and a plasma membrane. It could be a cell from any kind of organism
Cooking an egg until the clear runny part turns into a white solid is an example of, Denaturation, Active transport moves molecules against the concentration gradient, requires ATP, can occur at the plasma membrane, can est. pH gradients Which of the following best summarizes the relationship between dehydration reactions and hydrolysis? Dehydration reactions assemble polymers, and hydrolysis breaks them down. Grana, thylakoids, and stroma are all components found in chloroplasts.
Prokaryotic cells, like bacteria, contain mitochondria, chloroplasts, and other, membrane-bound organelles False, Atoms, molecules, and cells are constantly being replaced in your body. Therefore, you must die to live, True What is a fat or triacylglycerol a lipid made of three fatty acids and glycerol Which of the following relationships between cell structures and their respective functions is not correct? lysosomes: site of protein synthesis chloroplasts: photosynthesis cell wall: support, protection chromosomes: genetic control of information mitochondria: formation of ATPgolgi apparatus: sorting & packaging proteins
The endomembrane system includes all of the following EXCEPT intermediate filaments The chaperonin complex, facilitates protein folding The primary sequence of a protein determines the secondary structure. True or False True ) Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells? gap junctions
Central vacuoles are found in ________ cells and can contain ______________, plant............toxins Which is stronger, a hydrogen bond or a covalent bond?, covalent The tertiary structure of a protein is the three-dimensional shape The group of amino acids below are best described as: Serine (Ser), Threonine(Thr), Cysteine (Cys), Tyrosine(Tyr), Asparagine(Asn), Glutamine(Gin) D) hydrophilic
The nucleolus, is where rRNA is synthesized to make ribosomal subunits The partial negative charge at one end of a water molecule is attracted to the partial positive charge of another water molecule. What is this attraction called? a hydrogen bond Which of the following is a pentose ketose sugar? Glyceraldehyde RiboseGlucoseGalactoseRibuloseFructose Ribulose A disulfide bridge in a protein is a A) covalent linkage between adjacent sulfhydryl groups
_____________ ribosomes are located in the cytosol while __________ ribosomes are attached to the endoplasmic reticulum. free.............bound, The release of chemicals (called neurotransmitters) from nerve cells is a specialized example of, exocytosis The structural feature that allows DNA to replicate itself is the complementary pairing of the bases Which of the following is NOT a function of integral membrane proteins?transport, signal transduction, enzymatic activity, replication of DNA, attachment to the ECM, cell-cell recognition replication of DNA
Which of the following is NOT true regarding microtubules? They form a 9+2 arrangement inside microvilli The property of water that best explains how water stays connected from roots to leaves in plants, or from the bottom to the top of a straw, is called, cohesion Amylase is an enzyme found in saliva that breaks down _____________, a form of ____________. amylose........starch Which of the following is a plant cell in a hypertonic solution? Plasmolyzed
Which of the following is a plant cell in a hypertonic solution? Plasmolyzed
hexose sugar
Which of the following statements is NOT true? C) Basal bodies are found at the base of cilia but not flagella. Hydrophobic substances like vegetable oil are ) non-ionic or nonpolar substances that repel water Buffers are substances that help resist shifts in pH by releasing H+ in basic solutions.
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