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Question 1 Which of the following is a possible DNA structure, in addition to the right-handed...
Question 4.(60 secs Which of the following pair is mismatched? A. B-DNA: dehydrated B.Z-DNA:left-handed helix C.A-DNA:...
Question 4.(60 secs Which of the following pair is mismatched? A. B-DNA: dehydrated B.Z-DNA:left-handed helix C.A-DNA: dehydrated D.Z-DNA: no major grooves E.B-DNA: right-handed helix
The B form (most common) of DNA forms a right-handed helix. Which of the below molecules...
The B form (most common) of DNA forms a right-handed helix.
Which of the below molecules contains a right-handed helix? Explain
your answer.
& SAAMATA AHAHAAs
Which of the following statements concerning the various forms of DNA is incorrect? a. B-DNA is...
Which of the following statements concerning the various forms of DNA is incorrect? a. B-DNA is the conformation observed under physiological conditions. b. A-DNA occurs in a partially dehydrated environment. c. A-DNA and Z-DNA are right handed helices, while B-DNA is left handed d. Z-DNA is formed by alternating C-G nucleotides.
1. Which of the following is / are TRUE regarding a DNA molecule? a) A SINGLE...
1. Which of the following is / are TRUE regarding a DNA molecule? a) A SINGLE DNA molecule consists of 2 nucleotide chains b) Covalent, phosphodiester bonds connect the nucleotides of a single nucleotide chain together c) Phosphodiester bonds join the separate nucleotide chains to one another forming a single molecule d) Hydrogen bonds join the separate nucleotide chains to one another forming a single molecule 2. During DNA replication, the enzyme helicase: a) Unwinds the double helix b) Functions...
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys,...
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys, or His residues? A) Collagen B) Alpha keratin C) Hemoglobin D) Myoglobin E) Beta barrels 6. Which of the following correlates to the classic experiment demonstrating that reduced and denatured RNase A could refold into the native form? A) Disulfide bonds do not stabilize folded proteins B) Reducing agents denature proteins C) 1° structure can determine 3° structure D) Urea cleaves disulfide bonds E)...
Q10.4 1 Point Which kinds of bonds does carbon NOT make O single bonds O double...
Q10.4 1 Point Which kinds of bonds does carbon NOT make O single bonds O double bonds O triple bonds O rings O linear chains O branched chains O all of the above O none of the above
Question 2 1 pts Which of the following supports endosymbiotic theory? O Chloroplasts are organelles that...
Question 2 1 pts Which of the following supports endosymbiotic theory? O Chloroplasts are organelles that do not contain any DNA. Chloroplasts are "carnivores, capable of phagocytosing cells. Chloroplasts are organelles with two phospholipid bilayers. O Chloroplasts use oxygen to generate ATP. Question 3 1 pts Which of the following does NOT correctly describe ATP? ATP is a nucleotide. O ATP is a nucleoside triphosphate. ATP is used by RNA polymerase when the template has a "T" base. O ATP...
1. The figure below shows a DNA double helix and its nucleotide sequence. A. A homodimeric...
1. The figure below shows a DNA double helix and its nucleotide
sequence.
A. A homodimeric helix–turn–helix protein binds to a DNA
fragment containing this sequence. Its preferred half-site is
AACAC. Show where the two recognition helices in the protein
contact the DNA.
B. Are protein–DNA contacts primarily in the major or the minor
groove of DNA? What parts of the nucleotides contact the amino acid
side chains of the protein to provide most sequence specificity?
What kind of bond...
QUESTION 11 Which is true of the structure the DNA double helix? A. The sugar-phosphate backbone...
QUESTION 11 Which is true of the structure the DNA double helix? A. The sugar-phosphate backbone faces outward. B. The nitrogen-containing bases face inward and form hydrogen bonds to one another. C. Adenine (A) bonds to Thymine (T). D. Adenine (A) bonds the Cytosine (C).
Which are true, and which are false? a) Genetic material must encode phenotypes b) Genetic material...
Which are true, and which are false? a) Genetic material must encode phenotypes b) Genetic material must contain nitrogen, but not sulfur c) The structure of DNA is described as a double helix with two parallel strands. d) Covalent (phosphodiester) bonds connect nucleotides in a strand; noncovalent (hydrogen) bonds hold strands into a double-stranded structure e) All organisms contain DNA that is roughly 25% A, 25% T, 25% G, and 25% C. f) A-, B-, and Z-form DNA are all...
Question 4.(60 secs Which of the following pair is mismatched? A. B-DNA: dehydrated B.Z-DNA:left-handed helix C.A-DNA: dehydrated D.Z-DNA: no major grooves E.B-DNA: right-handed helix
The B form (most common) of DNA forms a right-handed helix.
Which of the below molecules contains a right-handed helix? Explain
your answer.
& SAAMATA AHAHAAs
Which of the following statements concerning the various forms of DNA is incorrect? a. B-DNA is the conformation observed under physiological conditions. b. A-DNA occurs in a partially dehydrated environment. c. A-DNA and Z-DNA are right handed helices, while B-DNA is left handed d. Z-DNA is formed by alternating C-G nucleotides.
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys, or His residues? A) Collagen B) Alpha keratin C) Hemoglobin D) Myoglobin E) Beta barrels 6. Which of the following correlates to the classic experiment demonstrating that reduced and denatured RNase A could refold into the native form? A) Disulfide bonds do not stabilize folded proteins B) Reducing agents denature proteins C) 1° structure can determine 3° structure D) Urea cleaves disulfide bonds E)...
Q10.4 1 Point Which kinds of bonds does carbon NOT make O single bonds O double bonds O triple bonds O rings O linear chains O branched chains O all of the above O none of the above
Question 2 1 pts Which of the following supports endosymbiotic theory? O Chloroplasts are organelles that do not contain any DNA. Chloroplasts are "carnivores, capable of phagocytosing cells. Chloroplasts are organelles with two phospholipid bilayers. O Chloroplasts use oxygen to generate ATP. Question 3 1 pts Which of the following does NOT correctly describe ATP? ATP is a nucleotide. O ATP is a nucleoside triphosphate. ATP is used by RNA polymerase when the template has a "T" base. O ATP...
1. The figure below shows a DNA double helix and its nucleotide
sequence.
A. A homodimeric helix–turn–helix protein binds to a DNA
fragment containing this sequence. Its preferred half-site is
AACAC. Show where the two recognition helices in the protein
contact the DNA.
B. Are protein–DNA contacts primarily in the major or the minor
groove of DNA? What parts of the nucleotides contact the amino acid
side chains of the protein to provide most sequence specificity?
What kind of bond...
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