Homeostasis
What is homeostasis?
Homeostasis is the process by which living things maintain a stable internal environment.
What are valence electrons?
Valence electrons are the electrons found in the outermost shell of an atom.
What is a disease?
A disease is a condition that negatively affects the normal functioning of the body.
What is a natural resource?
A natural resource is a material or substance found in nature that people use, such as water, coal, or timber.
What does Mr Dent think the purpose of school is?
To Learn
Name two conditions in the human body that are regulated by homeostasis.
Body temperature and blood glucose levels are both regulated by homeostasis
Why are valence electrons important in chemical bonding?
Valence electrons are involved in forming chemical bonds between atoms.
What is the difference between infectious and non-infectious diseases?
Infectious diseases are caused by pathogens and can spread from one person to another; non-infectious diseases cannot be transmitted and are often caused by genetics, lifestyle, or environmental factors.
What does sustainability mean?
Sustainability is using resources in a way that meets current needs without harming the environment or depleting resources for future generations.
What is Mr Dents favourite science subject?
Chemistry
How does sweating help the body maintain homeostasis?
Sweating helps cool the body down, lowering body temperature and keeping it within a normal range.
How many valence electrons does an oxygen atom have?
An oxygen atom has 6 valence electrons.
Name two examples of infectious diseases and two examples of non-infectious diseases.
Infectious: Influenza, tuberculosis.
Non-infectious: Diabetes, asthma.
Name one renewable resource and one non-renewable resource, and briefly explain the difference.
Renewable resource: Solar energy. Non-renewable resource: Coal.
Renewable resources can be replaced naturally and reused, while non-renewable resources cannot be replaced once used up.
How many years does Mr Dent have to complete his Masters of Teaching?
1
What is the role of the pancreas in maintaining blood glucose levels?
The pancreas releases insulin and glucagon to control blood glucose levels, keeping them stable.
Explain how sodium and chlorine atoms form an ionic bond.
Sodium transfers one valence electron to chlorine, making sodium a positive ion and chlorine a negative ion, which attract each other to form an ionic bond.
How does the body protect itself against infectious diseases?
The body uses physical barriers like skin and the immune system (including white blood cells) to defend against pathogens.
Give one example of how humans can make resource use more sustainable.
Humans can make resource use more sustainable by recycling materials like paper, glass, and plastic to reduce waste and conserve resources.
Where did Mr Dent go to school?
Coonamble
Describe the homeostatic response when blood glucose levels rise after eating. Include stimulus, receptor, effector, and response.
Stimulus: Blood glucose levels rise.
Receptor: Pancreas detects the increase.
Effector: Pancreas releases insulin.
Response: Cells absorb glucose from the blood, lowering blood glucose levels.
Describe what happens to valence electrons in a covalent bond between two hydrogen atoms.
The two hydrogen atoms share their valence electrons so each has a full outer shell, forming a covalent bond.
Explain how vaccination helps prevent the spread of infectious diseases.
Vaccination introduces a harmless form of a pathogen to the body, causing the immune system to produce antibodies. This prepares the body to quickly respond if exposed to the real disease, reducing spread.
Explain why sustainable management of water is important for society and the environment.
Sustainable management of water ensures enough clean water is available for people, reduces pollution, and helps protect natural ecosystems that depend on water.
What jobs did Mr Dent do before starting to train to be a teacher
Precision Fermentation or Radiopharmacy