Practice Packaging Of Dna Helix (5.1.2) - MOLECULAR BASIS OF INHERITANCE

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What structure forms when DNA wraps around histones?
Show hintHide hint
Think of the basic unit of DNA packaging.
Question 2.
What is the major difference between euchromatin and heterochromatin?
Show hintHide hint
Consider accessibility for gene expression.
3Question 3.
What structures form when DNA wraps around histones?
- Chromosomes
- Nucleosomes
- Euchromatin
Show hintHide hint
Consider the basic structural unit of chromatin.
4Question 4.
True or False: Heterochromatin is transcriptionally active.
- True
- False
Show hintHide hint
Think about whether it can be easily expressed.
Question 5.
Given the length of DNA in a human cell and the average base pairs per nucleosome, estimate how many nucleosomes are required to package all human DNA.
Show hintHide hint
Use the total number of base pairs in human DNA for this calculation.
Question 6.
If a particular gene is located in heterochromatin, what implications does this have for its expression?
Show hintHide hint
Consider how accessibility affects gene regulation.

4 more questions in this section. Enroll free to practise them all.