1. Adenine bonds with a)Guanine c) Cytosine b)Thymine d) Adenine 2.What are the
ID: 277672 • Letter: 1
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1. Adenine bonds with a)Guanine c) Cytosine b)Thymine d) Adenine 2.What are the 4 nitrogen bases? a) adenine, thymine, cytoplasm, and guanine b) adenine, thymine, cytosine, and glycerol c) adenine, thymine, cytosine, and guanine d)adenine, thymine, cytosine, and glucose 3.Which 2 molecules forms the sides (backbone) of the DNA ladder? a) deoxyribose and adenine b) sugar and the nucleus c) deoxyribose and a hydrogen bond d)deoxyribose (sugar) and phosphate 4. Which organelle is DNA usually found in? a) cell membrane c) chloroplast b) vacuole d) nucleus 5.The fact that some viruses use DNA to direct their heredity was demonstrated by a) finding radioactive sulfur from a bacteriophage in a bacterium b) finding radioactive phosphorus fom a bacterium in a bacteriophage c) finding that radioactive phosphorus from a bacteriophage had mutated in d) finding radioactive phosphorus from a bacteriophage in a bacterium e) finding radioactive sulfur from a bacterium in a bacteriophage INSRT STD English (USA) Default here to searchExplanation / Answer
Answer=
1] Adenine bonds with
b]Thymine
explaination- Adenine is a nucleotide base always pairs with thymine by two hydrogen bonds.
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2.4 nitrogen bases are
c] Adenine,thymine,cytosine and guanine
there are 4 nitrogen bases are present in DNA.i.e. Adenine,thymine,cytosine and guanine.
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3] The 2 molecules that forms the sides i.e.backbone of the DNA ladder
d]deoxyribose (Sugar ) and phosphate
explaination- The backbone of DNA is made from the alternating units of sugar & phosphate.sugar in case of DNA is deoxyribose.
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4] The DNA is usually found in
d]Nucleus
explaination- most of the cells DNA are found in nucleus.all other organelles also contains DNA but in lower quantity.
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