Top answers

Name two components of an animal cell, and briefly describe their role.

One component is the nucleus. This organelle contains the genetic information of the cell, in the form of DNA. Another component is the mitochondira. This is the site of respiration in the cell and therefore...
CN
Answered by Ceri N. • Biology tutor
6721 Views

Explain how ADH helps to maintain water homeostasis in humans.

ADH (antidiuretic hormone) is a hormone that targets the kidney. It triggers the insertion of aquaporins into the walls of the collecting duct. When the water concentration in the body is too low (high osmol...
SP
Answered by Sophie P. • Biology tutor
14153 Views

Why do enzymes stop working at high temperatures?

Enzymes are biological catalysts. This means they spead up chemical reactions in the body. To understand why they might stop working, you must first look at the structure. Enzymes are proteins made up of pri...
CM
Answered by Caitlin M. • Biology tutor
28706 Views

Explain why Darwin was drawn as a monkey?

This rather strange question is an example of an actual exam problem taken from the 2017 AQA Biology Exam which threw a lot of students off. The question in itself, however, is a good starting point for talk...
HG
Answered by Harriet G. • Biology tutor
10147 Views

Explain the reasons why communication between cells is essential in the human body. Use examples to illustrate your answer.

Communication is a process that involves the transfer of a signal/information from one cell to another. The main reason this has arisen between cells comes down to the basic component that makes up a human b...
MY
Answered by Magnus Y. • Biology tutor
2255 Views