DNA Structure and Function

Which series is arranged in order from smallest to largest?

• Nucleus, chromosome, cell, nucleotide, DNA

• nucleotide, DNA, chromosome, nucleus, cell

• Chromosomes, nucleus, cell, DNA, nucleotide

• Cell, nucleus, chromosome, DNA, nucleotide

Tags

NGSS.HS-LS1-2

What have scientists stated that the structure of DNA was?

• double helix

• single helix

• circle shaped

• nucleotide

Tags

NGSS.HS-LS1-1

Individual units in DNA are called

• nucleotides

• amino acids

• lipids

• nucleic acids

Tags

NGSS.HS-LS1-1

Which answer is not a part of a DNA nucleotide?

• thymine

• deoxyribose

• ribose

• phosphate

The rungs in the ladder structure of DNA are...

• a pair of amino acids

• deoxyribose and phosphate

• the phosphates

• two nitrogen bases

The nitrogenous bases in DNA are...

• deoxyribose, guanine, cytosine, thymine

• adenine, guanine, cytosine, uracil

• adenine, guanine, cytosine, thymine

• amine, guanine, cytosine, thymine

What pairs in DNA and causes genetic variation?

• ribose and deoxyribose

• nitrogen bases

• amino acids

• phosphates and sugars

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which is the correct representation of a nucleotide in DNA?

• deoxyribose sugar, phosphate group, uracil

• deoxyribose sugar, phosphate group, thymine

• ribose sugar, phosphate group, thymine

• ribose sugar, phosphate group, uracil

Which type of bond (between the bases) can be easily broken, allowing the two sides of DNA to move apart for use in the cell?

• hydrogen bonds

• covalent bonds

• peptide bonds

• nitrogen bonds

Two people each have a gene that codes for a form of hemoglobin. Person #1 has a gene that encodes for normal hemoglobin, whereas Person #2 has a gene that encodes a mutated form of hemoglobin Sickle Cell Anemia. The difference between these two genes is due to

• the change of sugar in the molecule

• the addition of a nitrogen base

• the sequence of nitrogen bases

• the broken covalent bonds between the phosphate and sugar

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2