Biology Unit 2: DNA Basics

Which of the following explains DNA (deoxyribonucleic acid)?

• its a double helical molecule

• it contains the information needed for every single body process that keeps you alive

• it's made od 3 components of nucleotides

• its the copying the base sequence of a gene to a messenger molecule based on complementary base pairing

DNA is made up of nucleotides. What are the 3 components of nucleotides?

• phosphate group

• sugar

• nitrogenous base (Adenine, Cytosine, Thymine, and Guanine)

• nitrogen

What are the four different nitrogenous bases?

• A

• T

• C

• G

• U

DNA is made up of nucleotides. What is the backbone of DNA?

• phosphate group

• sugar

• nitrogenous base (Adenine, Cytosine, Thymine, and Guanine)

• nitrogen

DNA is made up of nucleotides. What is the bas pairs of DNA?

• phosphate group

• sugar

• nitrogenous base (Adenine, Cytosine, Thymine, and Guanine)

• nitrogen

Based on complementary base pairing in DNA, which of the followings are true?

• A always pairs with T

• C always pairs with G

• A always pairs with C

• G always pairs with T

• U always pairs with A

Given complementary base pairing, which of the DNA sequences below will base pair with the following sequence? G A A T T C

• C T T A T G

• 2. G A A T T C

• 3. C T T A A G

• 4. C T A T A G

True or False: DNA codes for proteins. Proteins are strings of amino acids.

• true

• false

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

What is a gene?

• a stretch of DNA that codes for a specific protein based on order of nucleotides

• perform functions in our bodies and determine our characteristics

• copying the base sequence of a gene to a messenger molecule based on complementary base pairing

• single stranded genetic molecule

• The process by which the information contained in mRNA is converted to proteins

Tags

NGSS.HS-LS1-1

Where is DNA, genes, mRNA, RNA polymerase, and Transcription happening in an organism?

• inside the nucleus

• outside the nucleus in the cytoplasm

• inside the nucleus in the cytoplasm