Question

a gene is:
a. a chromosome thats made up of dna
b. a section of dna that codes for a protein.
c. a chromosome that codes for a protein.
d. a section of dna that codes for a chromosome.

1. what is the first step in creating a protein from a gene:
2. what is the relationship between a protein, the cell and dna?

a. dna is copied into rna which is used to make protein in the cell.
b. dna is copied from protein, which is produced in the cell.
c. protein is copied from dna which is produced in the cell.
d. a protein is made of dna and cells.

1. where are proteins made?

a. the nucleus
b. ribosomes
c. the dna
d. the chromosomes

1. where in the cell is dna copied into rna?

Explanation:

• Gene Definition: A gene is a section of DNA that codes for a protein. Chromosomes are made of DNA and have many genes. So option b is correct.
• Protein - Cell - DNA Relationship: DNA is copied into RNA (transcription) which is then used to make protein (translation). So option a is correct.
• Protein Synthesis Location: Proteins are made in ribosomes. The nucleus has DNA, DNA is a molecule, and chromosomes are structures with DNA. So option b is correct.
• DNA to RNA Copying Location: Transcription (DNA to RNA) occurs in the nucleus.

Answer:

• For "A gene is": b. A section of DNA that codes for a protein.
• For "What is the relationship between a protein, the cell and DNA?": a. DNA is copied into RNA which is used to make protein in the cell.
• For "Where are proteins made?": b. ribosomes
• For "Where in the cell is DNA copied into RNA?": the nucleus