Would the DNA model provided most likely be representative of a bacteria, human, or fungus?
Responses
A This DNA would only be found in a human or fungus because bacteria do not have DNA.This DNA would only be found in a human or fungus because bacteria do not have DNA.
B This DNA would not be found in fungus, because fungus DNA is not made of nucleotides.This DNA would not be found in fungus, because fungus DNA is not made of nucleotides.
C All DNA has the same structure, so the modeled DNA could be found in any living organism.All DNA has the same structure, so the modeled DNA could be found in any living organism.
D This DNA would not be found in bacteria because bacteria only contain the nitrogen bases adenine, cytosine, and guanine.This DNA would not be found in bacteria because bacteria only contain the nitrogen bases adenine, cytosine, and guanine.
C All DNA has the same structure, so the modeled DNA could be found in any living organism.
What type of biomolecule is being produced at the ribosome?
Responses
A lipidlipid
B proteinprotein
C carbohydratecarbohydrate
D nucleic acid
B protein
If the green base is guanine, what is the blue base?
Responses
A ThymineThymine
B CytosineCytosine
C AdenineAdenine
D Uracil
B Cytosine
After an mRNA molecule is constructed from a DNA template, which TWO statements explain what happens next?
Responses
A The mRNA becomes a double stranded molecule.The mRNA becomes a double stranded molecule. - this question requires at least 2 answers
B The mRNA brings an amino acid to the nucleus.The mRNA brings an amino acid to the nucleus. - this question requires at least 2 answers
C The mRNA contains a start codon that reads AUG.The mRNA contains a start codon that reads AUG. - this question requires at least 2 answers
D The mRNA travels from the nucleus to the ribosome.The mRNA travels from the nucleus to the ribosome. - this question requires at least 2 answers
E The mRNA is exported from the cell through the membrane.
C The mRNA contains a start codon that reads AUG.
D The mRNA travels from the nucleus to the ribosome.
A student made the following list of facts about DNA.
1. DNA is a double helix made of two deoxyribose and phosphate backbones and nitrogenous bases.
2. The order of DNA nitrogenous bases determines the order of amino acids in the proteins synthesized.
3. The four nitrogenous bases of DNA are adenine, thymine, cytosine, and glycerol.
4. All organisms share the same genetic code with variations in length and sequence.
Which of statement is incorrect?
Responses
A Statement 4Statement 4
B Statement 3Statement 3
C Statement 1Statement 1
D Statement 2
B Statement 3 - The four nitrogenous bases of DNA are adenine, thymine, cytosine, and guanine. (not glycerol)
A student built a model of DNA to show its helical structure in an attempt to display their knowledge of the chemical properties of the 3D structure. In fact, the teacher asked the entire class to create similar models. However, the teacher asks the students to incorporate a biological explanation for how each DNA molecule uniquely codes for different traits. Which component should be incorporated in the student models in order to meet the teacher's expectation for illustrating DNA's ability to code for unique traits?
Responses
A The DNA models should have different A:T, C:G ratios.The DNA models should have different A:T, C:G ratios.
B The DNA models should have unique nucleotide sequences.The DNA models should have unique nucleotide sequences.
C The DNA models should have different angles of curvature for the helical strands.The DNA models should have different angles of curvature for the helical strands.
D The DNA molecules should have alternating ribose and deoxyribose as the sugars in the backbone.