Homework Answers
QUESTION 3
The correct answer is B. One of the main steps of fluorescence microscopy is to “stain” your sample. Basically, you need at least one antibody labelled with a dye (Chromophore) such as Alexa Fluor. This antibody has to be specific against a protein contained in the cell or tissue. In some cases, the antibody is not labelled so, you need to use a secondary antibody which is labelled against the primary antibody.
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2)Which of the A)peptidoglycan B)cellulose C)glycogen D)chitin 3 Which of the following is true of fluorescence...
Which of the following is true about fluorescence? a)The excitation wavelength of a fluorescent particle is...
Which of the following is true about fluorescence? a)The excitation wavelength of a fluorescent particle is lower in energy than the emission wavelength b)The excitation wavelength of a fluorescent particle is higher in energy than the emission wavelength c)Both excitation wavelength and emission wavelength for a fluorescent particle have similar energies \ d)The emission wavelength of a fluorescent particle cannot be determined
AJ by oxygen Donas Bjoy nyarogen bonas ionic bonds D) by nonpolar covalent bonds Coy E)...
AJ by oxygen Donas Bjoy nyarogen bonas ionic bonds D) by nonpolar covalent bonds Coy E) by isotopes 29) Which answer below best describes H,0? A) Water molecule bonds are ionic bonds, in which electrons are gained and lost to create the bond. B) Water molecule bonds are oxygen bonds, in which oxygen atoms form bonds together. C) Water molecule bonds are polar covalent bonds, in which unequal sharing of electrons occurs. D) Water molecule bonds are nonpolar covalent bonds,...
Which macromolecule functions for long term energy storage? A. Simple sugars B. Fats C. Enzymes D....
Which macromolecule functions for long term energy storage? A. Simple sugars B. Fats C. Enzymes D. DNA Of the following mixtures in various test tubes, which would you expect to observe the formation of bubbles of CO2? A. Water, sugar, and yeast. B. Water and sugar. C. Water alone. D. Water and yeast. You add an equal volume of water to an unknown chemical liquid. You notice that the unknown chemical and the water form two seperate layers and the...
1. Fill out the following table by indicating which general technique (light microscopy (LM) or electron...
1. Fill out the following table by indicating which general technique (light microscopy (LM) or electron microscopy (EM]) could be used to observe each structure or phenomenon. Put "no" in the box if the technique could not be used. If light microscopy can be used, name one technique (bright-field, phase-contrast, fluorescence, etc.) that you think would be effective. You will find some useful information in Appendix 1 of this manual and Chapter 18 of your textbook. Structure or phenomenon Could...
Which of the following statement(s) is/are TRUE regarding the hydrophobic effect? A. When lipids are introduced...
Which of the following statement(s) is/are TRUE regarding the hydrophobic effect? A. When lipids are introduced to a solution of water, the entropy of the system will increase. B. Nonpolar portions of the lipid molecule aggregate so that only the hydrophobic groups are exposed. C. When complete aggregation into micelle formation, the ordered solvent shell will be minimized and the entropy is increased. D. All of the statements are true.
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus?...
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus? A. protons B. neutrons C. electrons D. More than one of the above answers are correct. Molecules that are attracted to water are called ______. A. solvents B. hydrophilic C. hydrophobic D. nonpolar The ability of an organism to maintain a stable internal environment is called __________. A. homeostasis B. denaturation C. replication D. natural selection Ionic bonding occurs when _________. A. two molecules...
which of the following statement about water is not true a)water polar b)water not polar c)...
which of the following statement about water is not true a)water polar b)water not polar c) atoms in water share the distribution of electrons equally d) both b and c
14. When are atoms most stable? A) when they have the fewest possible yale (B) when...
14. When are atoms most stable? A) when they have the fewest possible yale (B) when they have the ma C) when all of the electron Orbit D) when all electrons are paired e the fewest possible valence electrons they have the maximum number of unpaired electrons in all of the electron orbitals in the valence shell are filled ods with 15. Water molecules can form hydrogen bonds with Acompounds that have polar covalent bonds B) compounds that have non-polar...
Which of the following molecules is nonpolar? a. H2 b. HF c. HCl d. HI e....
Which of the following molecules is nonpolar? a. H2 b. HF c. HCl d. HI e. HBr Which of the following molecules can participate in Hydrogen bonding? a. HF b. CO2 c. CH4 d. H2S Which of the following molecules is polar? a. H2O b. CO2 c. CH4 d. N2 e. None of the above In lab, temperature changes caused by ________________ of liquids will be related to the strength of intermolecular forces. a. Evaporation b. Mass c. Density d....
No need to show any work 2) Ionic bonding is expected in which of these compounds? A) Cl2 B) KF C) OF2 D) HF E) H2...
No
need to show any work
2) Ionic bonding is expected in which of these compounds? A) Cl2 B) KF C) OF2 D) HF E) H2 3) A polar covalent bond is found in which of these compounds? A) H20 B) F2 C) NaCl D) H2 E) N2 4) The bond in Cl2 is a(n) bond. A) ionic B) nonpolar covalent C) metallic D) polar ionic E) polar covalent
AJ by oxygen Donas Bjoy nyarogen bonas ionic bonds D) by nonpolar covalent bonds Coy E) by isotopes 29) Which answer below best describes H,0? A) Water molecule bonds are ionic bonds, in which electrons are gained and lost to create the bond. B) Water molecule bonds are oxygen bonds, in which oxygen atoms form bonds together. C) Water molecule bonds are polar covalent bonds, in which unequal sharing of electrons occurs. D) Water molecule bonds are nonpolar covalent bonds,...
1. Fill out the following table by indicating which general technique (light microscopy (LM) or electron microscopy (EM]) could be used to observe each structure or phenomenon. Put "no" in the box if the technique could not be used. If light microscopy can be used, name one technique (bright-field, phase-contrast, fluorescence, etc.) that you think would be effective. You will find some useful information in Appendix 1 of this manual and Chapter 18 of your textbook. Structure or phenomenon Could...
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus? A. protons B. neutrons C. electrons D. More than one of the above answers are correct. Molecules that are attracted to water are called ______. A. solvents B. hydrophilic C. hydrophobic D. nonpolar The ability of an organism to maintain a stable internal environment is called __________. A. homeostasis B. denaturation C. replication D. natural selection Ionic bonding occurs when _________. A. two molecules...
14. When are atoms most stable? A) when they have the fewest possible yale (B) when they have the ma C) when all of the electron Orbit D) when all electrons are paired e the fewest possible valence electrons they have the maximum number of unpaired electrons in all of the electron orbitals in the valence shell are filled ods with 15. Water molecules can form hydrogen bonds with Acompounds that have polar covalent bonds B) compounds that have non-polar...
No
need to show any work
2) Ionic bonding is expected in which of these compounds? A) Cl2 B) KF C) OF2 D) HF E) H2 3) A polar covalent bond is found in which of these compounds? A) H20 B) F2 C) NaCl D) H2 E) N2 4) The bond in Cl2 is a(n) bond. A) ionic B) nonpolar covalent C) metallic D) polar ionic E) polar covalent
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