Unit 3

What are amino acids made of?

• proteins

• DNA

• nucleotides

• traits

Tags

NGSS.HS-LS1-6

Genes are made of chains of ______________.

• chromosomes

• nucleotides

• traits

• karyotypes

A segment of DNA that is part of chromosomes and is responsible

for inherited traits is called a (a)   .

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

Error or changes in the genetic code are called (a)   .

Tags

NGSS.HS-LS3-2

In RNA, thymine is replaced by (a)   .

A 3-base unit of mRNA is a (a)   .

How would the DNA sequence GCTATA be transcribed to mRNA?

• GCUAUA
• CGATAT
• CGAUAU
• GCUTUT

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

Which of the following factors can influence gene expression?

• a) Genetic variation

• b) Environmental factors

• c) Both genetic variation and environmental factors

• d) none of the above

Tags

NGSS.HS-LS3-2

NGSS.HS-LS1-1