25 Questions
Which nucleic acid is found in the nucleus and is double-stranded?
DNA
What type of nucleic acid contains ribose sugar and is single-stranded?
RNA
Which process involves the conversion of inorganic compounds to organic compounds in plants?
Photosynthesis
How do animals obtain organic compounds necessary for their survival?
By Ingesting plants and other animals
Which type of transport involves the movement of substances across a cell membrane against a concentration gradient?
Active Transport
What is the main function of fats in living organisms?
Serve as a source of energy
Which of the following is NOT a good source of protein according to the text?
Fruits
What is the significance of essential amino acids in the diet?
They are necessary for growth and repair
Which chemical unit is NOT present in nucleic acids according to the text?
Thymine
What does DNA stand for according to the text?
Deoxyribonucleic acid
Which element is NOT mentioned as essential for life in the text?
Sulfur
Which compound is mentioned as being the energy currency of our cells?
ATP
Which type of compounds contain carbon according to the text?
Organic compounds
Which element is mainly responsible for carrying oxygen to cells in the blood?
Iron
Which part of our body relies on many metal elements for the conduction of electricity?
Nerves
What are the four main types of organic molecules that make up all living organisms?
Carbohydrates, Lipids, Proteins, Nucleic acids
Which of the following foods are considered sources of lipids?
Animal body oils, plant seeds
What is the primary function of carbohydrates in cellular respiration?
Providing energy for cellular respiration
What distinguishes 'simple carbohydrates' from 'complex carbohydrates'?
Simple carbohydrates are monosaccharides or disaccharides, while complex carbohydrates are polysaccharides.
Why are lipids important for living organisms?
To store energy for later use
Which process involves converting glucose and oxygen into water and carbon dioxide?
Cellular Respiration
What is the primary purpose of the process of 'Nitrogen Fixation'?
Fixing free nitrogen from the air into usable compounds
What is the element needed for protein and nucleic acid synthesis that must be 'fixed' before it can be used by living organisms?
Nitrogen
Which statement best describes how plants impact the environment through chemical transformations?
Plants convert sunlight into oxygen and glucose
'Living organisms change chemicals in the environment' primarily through which processes mentioned in the text?
Photosynthesis and Cellular Respiration
Test your knowledge on how plants convert carbon dioxide and water to oxygen and glucose, how living organisms convert glucose and oxygen to water and carbon dioxide, and how nitrogen cycles through ecosystems.
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