Top answers

Human Biology
A Level

What is the difference between smooth and striated muscle?

While both smooth and striated muscle are found in the human body, smooth muscle is found in the viscera (internal organs), and striated muscle is attached to the skeleton. Striated muscle is composed of ...

Answered by Aurora V. Human Biology tutor
59084 Views

How does the theory of evolution due to natural selection explain the extinction of other species?

As the environment changes, some species with disadvantageous alleles will fail to compete successfully for food, shelter or a mater. This means that they are less likely to survive to reproduce, so these...

Answered by Ashleigh H. Human Biology tutor
2588 Views

What are the features of a good, reliable study/ investigation?

To produce a good reliable study, you would first need a sufficient number of participants to represent the actual population. Therefore a large sample size (number of participants in the study) would pro...

Answered by Alice C. Human Biology tutor
7459 Views

What is a nucleotide?

A nucleotide is the basic unit that makes up DNA. A singular nucleotide is made up of x3 components:

  1. A base (A, T, C or G)
  2. 5 Carbon sugar (deoxyribose = DNA or ribose = RNA)
  3. Answered by Hannah A. Human Biology tutor
    8719 Views

Describe the initiation and conduction of electrical signals through the heart.

For the heart to pump efficiently the control of contraction of its atrium and ventricles needs to be coordinated. Electrical signal starts at the sinoatrial (SA) node, also known as the pacemaker node. T...

Answered by Hannah A. Human Biology tutor
5788 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences