1- Select the type of nucleic acid molecule that is best described by the follow

Question

1- Select the type of nucleic acid molecule that is best described by the following phrase: carry genetic information from the nucleus to the ribosomes. DNA molecules only -both DNA and RNA molecules RNA molecules only -neither DNA nor RNA molecules 2- Meiosis produces a total ofcells. -2 .4 -6 -8 3- Are the building blocks of DNA genes -double helix -amino acids -nucleotides 4- Which of the following does NOT belong with the others? -replication fork -single stranded binded protein -DNA ligase -topoisomerase 5- Which of the following relationships about nucleotide composition in DNA is TRUE? -C+A-G+T -C+G-A+T -C-T -G T 6- Which of the following is FALSE when comparing RNA and DNA? Both are produced by phosphodiester linkages Both are composed of phosphate groups Both are composed of sugars Both are composed of identical nucleotides 7- which of the following proteins is involved in DNA replication in eukaryotes

Explanation / Answer

1. Option C is correct.
Central dogma of life: DNA ---> RNA ---> Protein
DNA ---> RNA: Transcription
RNA ---> Protein: Translation

2. Option B is correct.
Meiosis produce four haploid cells from a diploid parent cell.

3. Option D is correct.
DNA is a polynucleotide chain. It contains deoxyribonucleotides bonded together by phosphodiester bonds.

4. Option A is correct.
The replication fork is the site where replication (DNA strand synthesis occurs). Remaining all are proteins.

5. Option A is correct.
According to Chargaff's rule, Purines = Pyrimidines (in dsDNA)
A+G = T+C
The same can be rewritten as, A+C = T+G

6. Option D is correct.
DNA is composed of deoxyribonucleotides.
RNA is composed of ribonucleotides.

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