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What is the difference between the imperfect and the preterite tense?

Both the imperfect and the preterite tense are past tenses, but it is important to learn the distinctions between the two.
Generally the imperfect tense is used to speak about a repeated action in t...

Answered by Alice S. • Spanish tutor

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What is the difference between "por" and "para"?

Many people struggle with knowing when to you "por" and "para" as often they both translate to mean "for". There is no simple shortcut on learning when to use which other tha...

Answered by Alice S. • Spanish tutor

2663 Views

Describe the pathway of an electrical signal in producing a response to a stimulus

Stimulus is detected by a recepttor e.g. the skin- Electrical signals travel from receptor to Central nervous System (CNS) via sensory neurones- CNS coordinates a response to the stimuli- CNS sends ...

Answered by Aleena A. • Biology tutor

3241 Views

1a) Give 3 structures that an animal cell would contain and describe their function? 1b) Name 3 different structures that a plant cell contains which an animal cell would not.

1a) Nucleus: Contains the genetic material of the cellCell membrane: controls what can enter and leave the cell. Also will hold the cell togetherCytoplasm: Where cell reactions take place

1b) C...

Answered by Aleena A. • Biology tutor

3030 Views

Give an example of convergent evolution and suggest why it has occurred.

This is an example of a question a Biological Sciences candidate could expect at an Oxford interview.
The interviewer might start by asking for a definition of convergent evolution ("convergent...

Answered by Catherine H. • Oxbridge Preparation tutor

2250 Views