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How do I know which noun is masculine which is feminine?

In portuguese nouns have gender- masculine or feminine. Most masculine verbs end with -o, -im, -om, and -um. Most feminine nouns end with -a, -ção, -dade or -gem. Examples: Masculine o carro = a car o fim = ...
KJ
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What's the difference between the Imperfecto and Indefinitivo tenses?

Both Imperfecto and Indefinitivo are past tenses. Imperfecto is a tense used to describe states, emotions, circumstances, settings - it implies that the action has not been finite in the past. For example: I...
KJ
Answered by Karolina J. • Spanish tutor
4366 Views

Why does the nervous system have synapses if they slow down transmission?

Synapses are chemical connections between neurons which do indeed slow down transmission. However, they provide the nervous system with many benefits that could not be achieved without them: They ensure that...
SJ
Answered by Samuel J. • Biology tutor
21334 Views

The genetic code is described as being degenerate. What does this mean? and why ?

We say that the genetic code is degenerate because there are several codons, which code for the same amino acid. For example UCA, UCU, UCG and UCC all code for Serine. This is due to the fact that mRNA codin...
MD
Answered by Maria D. • Biology tutor
14383 Views

If cells can respire anaerobically, why do humans need oxygen?

Cells can indeed respire - or release energy - without oxygen, using anaerobic respiration. Here, energy is released from glucose to generate a substance called lactic acid. This is a good temporary solution...
SJ
Answered by Samuel J. • Biology tutor
26298 Views