GCSE Edexcel Biology Fossil evidence from human evolution: In 2005, a scientist claimed to

Question

In 2005, a scientist claimed to have found red blood cells in the fossilised bones of a Tyrannosaurus rex that lived 68 million years ago.

(a) (i) Complete the sentence by putting a cross (✗) in the box next to your answer.

A group of the same type of cells, such as red blood cells, is known as

A   An organ
B   An organ system
C   An organism
D   A tissue

(1)

(ii) The scientist said that each red blood cell found contained a nucleus.

In humans, each mature red blood cell does not have a nucleus.

Suggest why not having a nucleus in a red blood cell is an advantage.

In 2005, a scientist claimed to have found red blood cells in the fossilised bones of a Tyrannosaurus rex that lived 68 million years ago - Edexcel - GCSE Biology - Question 5 - 2015 - Paper 1