Question

1. put the following items in order from largest to smallest: dna, chromosome, nucleotide, gene

1.
2.
3.
4.

1. list 2 similarities and two differences between dna and rna.

of the mouse?

Explanation:

Question 6

Step 1: Recall structures' sizes

Chromosomes are made of DNA and proteins. DNA has genes, and genes are made of nucleotides. So from largest to smallest: Chromosome (contains DNA), DNA (contains genes), Gene (made of nucleotides), Nucleotide (building block of gene/DNA). Wait, no: Chromosome > DNA > Gene > Nucleotide? Wait, chromosome is a structure with DNA and proteins. DNA is a molecule; a gene is a segment of DNA; a nucleotide is the monomer of DNA (and RNA). So order from largest to smallest: Chromosome, DNA, Gene, Nucleotide.

Step 2: Arrange them

1. Chromosome (largest, as it's a structure with DNA + proteins)
2. DNA (molecule, contains multiple genes)
3. Gene (segment of DNA, made of nucleotides)
4. Nucleotide (smallest, building block of DNA/RNA)

• Similarities: Both DNA and RNA are nucleic acids, made of nucleotides (each nucleotide has a sugar, phosphate, and nitrogenous base). Both use adenine (A), cytosine (C), and guanine (G) as nitrogenous bases.
• Differences: DNA has deoxyribose sugar; RNA has ribose. DNA is double - stranded (usually); RNA is single - stranded (usually). DNA has thymine (T); RNA has uracil (U) instead of thymine.

Answer:

1. Chromosome
2. DNA
3. Gene
4. Nucleotide

Question 7