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What are the advantages and disadvantages of sexual reproduction?

Sexual reproduction has many evolutionary advantages. These include: (1) a genetic variation in offspring that is not seen with asexual reproduction. (2) The variation allows the species to adapt to changes ...
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Answered by Lois W. • Biology tutor
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what is the advantage of having a large surface area?

Gas exchange surfaces tend to have the adaptation a large SA:volume ratio. This is advantageous as it increases the area over which gases and other materials can be transported into and out of the organism, ...
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Answered by Saskia D. • Biology tutor
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How does myelination affect nerve impulse conduction velocity?

Nerve impulses are propagated in the form of action potentials, involving the rapid depolarisation of the nerve cell membrane from -70mV to +30mV, before repolarisation occurs returning the membrane potentia...
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Answered by Thomas W. • Biology tutor
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What is the difference between second messengers and gene regulatory proteins?

Second messengers are used in the downstream signalling cascade of protein hormones. As these hormones are hydrophilic, they can't cross the phospholipid bilayer. Therefore, when binding to a specific recept...
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Answered by Hanna H. • Biology tutor
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Why are enzymes called catalysts if they are proteins and not chemicals?

A catalyst refers to many types of different molecules or chemicals which can r educe the activation energy of a reaction without being used up itself. Activation energy is the minimum energy required for a ...
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Answered by Meghna V. • Biology tutor
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