57 Questions
What distinguishes inorganic compounds from organic compounds?
Their simple chemical structures that lack carbon-hydrogen bonds
Which of the following is an example of an inorganic compound?
Sodium Chloride (NaCl)
Which of the following is not a biological or ecological function of water?
Photosynthesis
How does water help organisms maintain a stable internal temperature?
By absorbing and releasing heat slowly
In which way does water provide structural integrity in plants?
By providing turgor pressure
Which animals utilize water to form a hydrostatic skeleton?
Jellyfish
What percentage of the Earth's surface is covered by water?
71%
What percentage of the human body is made up of water?
60-70%
How do plants cool themselves?
Through transpiration
What is the chemical formula for water?
H2O
What is the primary role of water in the transport of nutrients and waste products in living organisms?
It dissolves substances, facilitating their movement
Which of the following is NOT a function of water in living organisms?
Structural support in cell membranes
What is the primary role of macro-elements such as calcium, potassium, and sodium in humans and animals?
They are crucial for structural integrity, fluid balance, and nerve transmission
Which of the following is NOT a micro-element required by living organisms?
Calcium
What is the primary role of macro-nutrients like nitrogen, phosphorus, and potassium in plants?
They are vital for growth and metabolic functions such as photosynthesis and enzyme activation
Which of the following is NOT a micro-nutrient required by plants?
Nitrogen
What is the primary environmental issue caused by the overuse of inorganic fertilisers?
Eutrophication
What is the process called where nutrient runoff causes excessive growth of aquatic plants and algae?
Eutrophication
Which of the following is NOT a recommended practice to mitigate the negative impacts of fertiliser overuse?
Increasing the use of synthetic fertilisers
What is the primary function of minerals in living organisms?
They are required to perform critical metabolic functions
What makes water a universal solvent and crucial for cellular biochemistry?
Its participation in hydrolysis and photosynthesis reactions
Which mineral is essential for oxygen transport in humans and is classified as a micro-element?
Iodine
How do micro-nutrients like iron and manganese contribute to plant health?
By facilitating chlorophyll production and metabolic reactions
What is the primary risk associated with the overuse of inorganic fertilisers in agriculture?
Hypoxic conditions due to excess aquatic plant growth
Which of the following is a macro-nutrient crucial for enzyme activation and growth in plants?
Phosphorus
In what way does water directly contribute to the digestion process within the body?
By participating in hydrolysis reactions
Why are micro-elements like iron and zinc considered essential despite being needed in smaller quantities?
For critical functions like oxygen transport and hormone production
Which of the following is NOT a unique property of water that supports biological and ecological functions?
Water's ability to dissolve a wide range of substances
Which of the following is NOT a way organisms maintain a stable internal temperature with the help of water?
Water providing turgor pressure in plants
Which of the following is NOT an inorganic compound?
Glucose (C6H12O6)
Which of the following is NOT a role of inorganic compounds in biological and ecological functions?
Inorganic compounds play a role in photosynthesis
Which of the following is NOT a way water provides structural integrity in living organisms?
Water acting as a lubricant in joints
Which of the following is NOT a reason why water covers about 71% of the Earth's surface?
Water's boiling point is lower than most other liquids
Which of the following is NOT a common use of inorganic compounds in everyday life?
Plastics
Which of the following is NOT a reason why water is vital for all known forms of life?
Water's ability to form a hydrostatic skeleton
Which of the following is NOT a way water helps in the maintenance of life?
Water's role in providing energy to cells
Which of the following is NOT a reason why water is essential for plants?
Water's role in providing energy to cells
Which of the following minerals is essential for thyroid hormone production in humans and is classified as a micro-element?
Iodine
Which of the following micro-elements required by plants is essential for the production of chlorophyll?
Iron
Which of the following is not a recommended practice to mitigate the negative impacts of fertiliser overuse on the environment?
Increasing the frequency of fertiliser application
Which of the following is not a way water participates directly in chemical reactions in living organisms?
Osmosis
Which of the following is not a macro-element in humans and animals crucial for structural integrity, fluid balance, and nerve transmission?
Magnesium
Which of the following is not a way water helps in the maintenance of life for aquatic organisms?
Providing chemical stability
Which of the following is not a reason why water is considered a universal solvent?
Its high melting point
Which of the following is not a macro-nutrient crucial for plant growth and metabolic functions such as photosynthesis and enzyme activation?
Iron
Which of the following is not a way water provides structural integrity in living organisms?
Being a component of nuclear envelopes
Which of the following is not a biological or ecological function of water in plants?
Contributing to protein synthesis
Which of the following inorganic compounds plays a critical role in maintaining the structural integrity of both plants and animals?
Water (H2O)
Which property of water allows it to absorb and release heat slowly, helping organisms maintain a stable internal temperature?
High heat capacity
Which micro-element is essential for oxygen transport in humans and contributes to the color of blood?
Iron (Fe)
Which inorganic compound is a primary component of plant cell walls, providing strength and rigidity?
Silicon dioxide (SiO2)
Which micro-element is involved in photosynthesis and assists in the formation of chlorophyll in plants?
Manganese (Mn)
Which of the following inorganic compounds is known for its ability to cause acid rain and its role in ocean acidification?
Sulfur dioxide (SO2)
Which of the following macro-elements is responsible for nerve transmission and muscle contraction in humans and animals?
Calcium (Ca)
Which of the following inorganic compounds plays a critical role in the formation of bones and teeth in humans and animals?
Phosphorus (P)
Which of the following micro-elements is essential for human growth and development, and helps maintain the health of the nervous system?
Zinc (Zn)
Which of the following inorganic compounds is responsible for the formation of precipitation and the water cycle in the environment?
Water vapor (H2O)
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