Grade 11 Activities Activity 1
1. How do micro-organisms maintain balance in the environment and the web of life? (8)
2. What is symbiosis?
(2)
3. Mention 3 types of symbiotic relationships and explain each.
(6)
4. What are the 2 types of bacteria that show mutualism and how do they achieve their
roles.
(10)
MARKS= 26
Activity 2​

Afather’s state of health has little or no effect on the unborn child. true false

The affordable care act has expanded mental health and substance abuse benefits to 62 million people and is an addition to the mental health parity act of 2008. the changes and additions require mental health coverage in small group and individual plans where people were not previously covered. what is the biggest benefit of these changes? what major challenges are still associated with mental health coverage? explain your reasoning.

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein.b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid.c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane.d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.