Describe the role of gibberellin in the germination of barley
Describe the role of gibberellin in the germination of barley
1 Answer
Questions and Answers For
AS and A Level Biology
202 Questions
1 Answer Explain the role of auxin in elongation growth by stimulating proton pumping to acidify cell walls
Explain the role of auxin in elongation growth by stimulating proton pumping to acidify cell walls
1 Answer Describe the rapid response of the Venus fly trap to stimulation of hairs on the lobes of modified leaves and explain how the closure of the trap is achieved
Describe the rapid response of the Venus fly trap to stimulation of hairs on the lobes of modified leaves and explain how the closure of the trap is achieved
1 Answer Explain the sliding filament model of muscular contraction including the roles of troponin, tropomyosin, calcium ions and ATP
Explain the sliding filament model of muscular contraction including the roles of troponin, tropomyosin, calcium ions and ATP
1 Answer Describe the ultrastructure of striated muscle with reference to sarcomere structure using electron micrographs and diagrams
Describe the ultrastructure of striated muscle with reference to sarcomere structure using electron micrographs and diagrams
1 Answer Describe the roles of neuromuscular junctions, the T-tubule system and sarcoplasmic reticulum in stimulating contraction in striated muscle
Describe the roles of neuromuscular junctions, the T-tubule system and sarcoplasmic reticulum in stimulating contraction in striated muscle
1 Answer Describe the structure of a cholinergic synapse and explain how it functions, including the role of calcium ions
Describe the structure of a cholinergic synapse and explain how it functions, including the role of calcium ions
1 Answer Explain the importance of the refractory period in determining the frequency of impulses
Explain the importance of the refractory period in determining the frequency of impulses
1 Answer Describe and explain the rapid transmission of an impulse in a myelinated neurone with reference to saltatory conduction
Describe and explain the rapid transmission of an impulse in a myelinated neurone with reference to saltatory conduction
1 Answer Describe and explain changes to the membrane potential of neurones, including: • how the resting potential is maintained • the events that occur during an action potential • how the resting potential is restored during the refractory period
Describe and explain changes to the membrane potential of neurones, including: • how the resting potential is maintained • the events that occur during an action potential • how the resting potential is restored during the refractory period
1 Answer
Welcome to our Q&A page! Here, you can find answers to frequently asked questions about our courses, features, and other topics related to our content. If you have a question that's not covered, feel free to ask, and we'll be happy to help!
Quiz Leaderboard
1st
Sourav
Score: 90%
Questions: 20
2nd
Priyanka
Score: 90%
Questions: 10
3rd
Nischal
Score: 90%
Questions: 10
4th
Vesnce
Score: 45%
Questions: 20
5th
Hector
Score: 40%
Questions: 10
6th
Hykss
Score: 20%
Questions: 10
Top Questions
-
drifting movement in fishes during migration
Drifting movement is a significant aspect of fish migration, particularly
Sourav Pan
-
classification of fishes based on migration in dams in india
Fish migration is a critical aspect of aquatic ecosystems, significantly
Sourav Pan
-
Do fish migrate in the winter?
Fish exhibit diverse migratory behaviors during winter, influenced by species-specific
Sourav Pan
-
Topoisomerase: – A. Separates the DNA strands at the origin – B. Keeps the single-stranded DNA regions from coming back together – C. Re-coils the DNA into a helix after replication is complete – D. Breaks DNA backbone to remove tension produced by the helicase – E. Breaks hydrogen bonds between DNA and the RNA primers
D. Topoisomerase breaks the DNA backbone to relieve supercoiling tension
Sourav Pan
-
What end overhangs?
The 3' end of the telomere strand typically has a
Sourav Pan
-
What kind of cells need cell replication of their telomeres?
Actively dividing cells, such as stem cells, germ cells, and
Sourav Pan
-
What percent of all human cancers have high levels of telomerase?
Around 85–90% of human cancers have high telomerase activity. This
Sourav Pan
- All Questions
BNO Team