Question

Question 43 After S phase a chromosome exists as a

Group of answer choices Pair of homologous chromosomes

Pair of sister chromatids each with its own centromere

Pair of sister chromatids without a centromere

Pair of sister chromatids with a common centromere

Question 44 During anaphase of mitosis

A.Chromosomes replicate

B.Homologous chromosomes separate

C. Centromeres duplicate

D.Sister chromatids separate

During protein synthesis, the growing peptide chain is synthesized in the

A. Carboxyl to amino direction

B. Phosphoryl to hydroxyl direction

C. Amino to carboxyl direction

D. Hydroxyl to phosphoryl direction

Answer 1

QUESTION 43

In this context, the S phase consist in the full synthesis of the genetic material. This includes the synthesis of DNA, histone synthesis and nucleosome duplication. This means that we will find a pair of sister chromatids each with its own centromere

QUESTION 44

During anaphase of mitosis, the genetic material is already duplicated and the sisters chromatids are separated. At this point these sister chromatids will be separate in order to form two cells with the same genetic content. So, the correct answer is D

QUESTION 45

The newly peptide chain will be synthesized from the amino to carboxyl direction where amino acids will be added to the carboxyl site. So, the correct answer is C