Question

question 5
both dna and rna:
o are single - stranded molecules
o cannot both be present in a cell simultaneously
o contain phosphate groups
o contain the same four types of nitrogen bases
o have the same five - carbon sugars
question 6
1 pts
sister chromatids are joined at the centromere in all of the stages of meiosis listed below except
o metaphase ii
o telophase i
o prophase ii
o metaphase i
o anaphase ii

Explanation:

Question 5

• DNA is double - stranded and RNA is single - stranded, so "Are single - stranded molecules" is wrong.
• Cells have both DNA and RNA simultaneously, so "Cannot both be present in a cell simultaneously" is wrong.
• DNA has deoxyribose and RNA has ribose (different five - carbon sugars), so "Have the same five - carbon sugars" is wrong.
• DNA has A, T, C, G and RNA has A, U, C, G (different nitrogen bases), so "Contain the same four types of nitrogen bases" is wrong.
• Both DNA and RNA are nucleic acids. Nucleic acids are made of nucleotides, and each nucleotide has a phosphate group.

• In metaphase II, prophase II, telophase I, and metaphase I, sister chromatids are joined at the centromere.
• In anaphase II, sister chromatids separate (they are no longer joined at the centromere).

Answer:

Contain phosphate groups

Question 6