Within the head of T4 phage _ molecule is present.
Correct answer: B. Double-Stranded DNA
- A. Single-Stranded DNA
- B. Double-Stranded DNA
- C. Single-Stranded RNA
- D. Double-stranded RNA
Explanation
Within the head of T4 phage, a double-stranded DNA molecule is present.Double-stranded DNA (dsDNA) is a molecule of DNA that consists of two complementary strands of nucleotides that are held together by hydrogen bonds. The two strands of dsDNA are arranged in an antiparallel fashion, meaning that the 5' end of one strand is paired with the 3' end of the other strand.The dsDNA in the head of T4 phage is about 150,000 base pairs long. It is tightly packed into a helix that is about 20 nanometers in diameter. The dsDNA is held in place by proteins called capsid proteins. The capsid proteins are arranged in a hexagonal lattice that forms a rigid structure that protects the dsDNA from the environment.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Biodiversity and Variety of Life
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Biodiversity and Variety of Life questions
"Two triangular structures with common base" is the description of the structure of _ of T4 phage.
Following are true about head of T4 phage EXCEPT:
T4 phage consists of:
The structure of phage _ is more complex than _.
About the tail of the T4 phage which one is not true:
The volume of the T4 phage is about _ times shorter than that of the host