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A biologist has a small pond containing goldfish in her garden. On a sunny day, more pondweed is at the surface of the water but on a cloudy day, less pondweed is at the surface. Suggest an explanation for this observation

The intensity of light is greater on a sunny day, therefore the rate of photosynthesis in the pondweed is greater during these days. Hence, more oxygen is produced which thereby increases the bouyancy (makes...
JS
Answered by Jay S. • Biology tutor
8032 Views

How are phospholipids arranged in the cell membrane?

Phosopholipids have a hyrdophilic head which is orientated towards the cytoplasm or the interstice, and hydrophobic tales which are orientated towards the inside of the membrane, hydrophobic interactions hol...
HK
Answered by Henry K. • Biology tutor
5246 Views

Explain the process of Oxidative Phosphorylation in cellular respiration

Oxidative Phosphorylation is the final stage in cellular respiration. It is an oxygen requiring process which involves the creation of energy, in the form of ATP, through the process of chemiosmosis. The mai...
OH
Answered by Olivia H. • Biology tutor
15422 Views

Explain the role of the diaphragm when breathing in and out

The diaphragm is a large muscle located at the base of the lungs. It is naturally dome shaped when relaxed. When we need to inhale, the diaphragm will contract and flatten out. This increases the volume of t...
SK
Answered by Salko K. • Biology tutor
6627 Views

How can genetically identical twins look different?

There are two key pieces of terminology that it is important to understand with this question; genotype and phenotype . All sexual organisms inherit a mix of genes from their parents. This mix - the genetic ...
JH
Answered by Josh H. • Biology tutor
9330 Views