English Questions
Explore questions in the English category that you can ask Spark.E!
Savoir (irregular past participle)
Vivre (irregular past participle)
Pleuvoir (irregular past participle)
Avoir (irregular past participle)
Connaître (irregular past participle)
Devoir (irregular past participle)
Boire (irregular past participle)
Mettre (irregular past participle)
If a cocklebur plant is exposed to darkness between 12:00 P.M. & 20:00 P.M., and flowers were present, what is its critical period for flowering?
What is meant by the following 2 sentences: Scientists don't yet know enough about the molecular genetics of mammals to embark on a full-scale assault on transcription factors. The human genome project could help to change that?
It's been suggested that if a mutation shifts the starting point for reading codons - the "reading frame" - by one base, or by two, the resulting protein sequence will be completely different. Why, however, can a DNA strand not be read 'in six different ways'?
Why might the oxygen uptake between bacteria grown using pyruvic acid as a substrate be higher than molecule B and those grown using molecule B as a substrate higher than molecule C?
Why will the use of material from a tendon to join damaged pieces of ligament together mean that recovery will be quite slow and require careful physiotherapy?
What is released from the Krebs cycle as the 5C compound is transforming into a 4C compound after NAD has been released?
Myosin molecules can generate a force of 1.7 × 10^-6 N per million molecules when they change shape. Measurements of a single muscle fibre showed that a force of 3.5 × 10^-3 N was produced when it contracted. How many myosin molecules changed shape during the contraction of this muscle fibre?
Cancer can result when genes involved in cell growth are turned on inappropriately. AIDS develops as the human immunodeficiency virus (HIV) invades cells, unleashes its own transcription factors, and commandeers gene expression. Why may inserting the correct gene into a cell not be all that is required?
Why may a plant exposed to 6 hours of darkness with no leaves covered not flower? Why may the opposite be true for a plant exposed to the same length of darkness with 1 leaf covered (meaning that it was exposed to 8 hours of darkness)?
Some proteins perform the duties of a transcription factor on a strictly part-time basis. For example, the usual job of NF-k B, a protein important in inflammation and immunity, is to sit tight in the cell fluid, tethered to a second protein. How might NF-k B might have a role in the development of atherosclerosis?
What is a semi-woody plant which requires fairly moist conditions? How could you know?
What is a non-woody plant that requires very moist conditions? How could you know?