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A double-stranded DNA molecule has 500
A. 400
B.500
C.150
D.0
E.300
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- Which statement best describes the structure of a DNA molecule A. DNA is single-stranded and straight molecule B. DNA is a double-stranded molecule that looks like a spiral staircase C. DNA is a double stranded molecule that is straight like a ladder D. DNA is a single-stranded and curly moleculeDNA _____________ are enzymes that prevent tangling of DNA strands during DNA replication.Which is not true of RNA? a. It is usually single-stranded. b. It functions in the cytoplasm. c. It contains uracil. d. It contains ribose. e. There are 4 functional types.
- Which helps prevent errors in DNA replication? A) Complementary base pairing reduce errors B) DNA ligase checks the DNA for errors C) DNA is located in the ribosomes D) Any base can pair with any other baseWhich word explains how the bases pair with each other? A- complimentary B- opposite C- similarWhich statement best describes the relationship between protein, amino acids, and DNA? DNA codes for proteins. Proteins are made up of amino acids. DNA codes for amino acids. Amino acids are made up of proteins. Amino acids code for DNA. DNA is made up of protein. Amino acids code for protein. Protein is made up of DNA.
- Which is the dominant form of DNA found in the cell? H 2. Z 3. B 4. AWhich step follows the assembly of new DNA strands by DNA polymerase? a.DNA ligase seals any gaps remaining between bases of new DNA. b.Primers base-pair with the exposed single DNA strands. c.Repair enzymes correct potential mutations in the DNA sequence. d.Enzymes unwind and separate the two strands of DNA.Which step follows the assembly of new DNA strands by DNA polymerase? A. Enzymes unwind and separate the two strands of DNA. B. Repair enzymes correct potential mutations in the DNA sequence. C. Primers base-pair with the exposed single DNA strands. D. DNA ligase seals any gaps remaining between bases of new DNA.
- Which is true of the lagging strand in DNA synthesis? a. It is built elongating towards the replication fork b. It is composed entirely of RNA c. It is built in the 3’ to 5’ direction d. It elongates in a series of segments, rather than continuouslyThe structure of DNA revealed how information is stored in the base sequence along a DNA strand. But what information is stored and how is it expressed?Write short answers. i. RNA not exists in double stranded from as DNA. Why?