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Charles Darwin found that finches from different islands had different sized beaks. Explain why one island may have finches with large short beaks and another may have finches with long thin beaks.

The differences in the birds' beaks are due to evolution and natural selection. One island may have an abundance of seeds and nuts which require a large beak to crack them open, meaning that birds with a ...

Answered by Poppy B. • Biology tutor

2013 Views

What types of infectious agents are there?

Bacteria (prokaryotes) 1-5 micrometers, contain RNA and DNA, can synthesise and metabolise protein, generally free livingMajority are harmless, but a certain small list can cause infectious diseasesOne of...

Answered by Adam T. • Biology tutor

2167 Views

Explain how allopatric speciation can lead to the formation of 2 species from an ancestral species?

The ancestral species is split into two populations by a geographic barrier, which prevents gene flow. Mutations arise which causes genetic variation between the populations. There are different environme...

Answered by Seb H. • Biology tutor

2134 Views

Albumin (a globular protein) is a solute found in blood plasma. In liver disease, people cannot produce sufficient amounts of albumin. Describe and explain how this change would affect red blood cells.

The solute potential of the blood plasma would be less negative or higher. Higher solute potential = higher water potential.

Water moves via osmosis from areas of high water potential to low water...

Answered by Caolan D. • Biology tutor

8199 Views

Explain how a change in a sequence of DNA bases could result in a non-functional enzyme

A mutation in the DNA sequence may lead to a different amino acid sequence may lead to a different amino acid being produced in the primary protein structure of the enzyme during translation. This may cau...

Answered by Yusuf A. • Biology tutor

19601 Views