science chapter 15 lessons 1,2,3 Flashcards
The combination of chemical reactions through when an organism breaks down materials
Metabolism
What are characteristics that all living things share?
Cellular organization, ability to grow and develop, containing similar chemicals, ability to reproduce, energy usage, and response to surroundings
What is the most abundant chemical in all living things?
Water
What energy source is the fastest in releasing energy?
Carbohydrates
Which energy source contains the most energy?
Lipids
What is an example of a lipid
Fats
Lipids, proteins, nucleus acids, and carbohydrates are all _________ material. (Hint: this applies to all things that contain carbon)
Organic
What speeds up chemical reactions?
Enzymes
Chemical instructions needed by cells to carry out the functions of life.
Nucleic acids
Why do living things need food?
To obtain and use energy
Why do living things need water?
To obtain chemicals from their surroundings, to break down food, to grow, to move substances within their bodies, and to reproduce
Why do living things need living space?
To get food and water from its surroundings, for shelter, and for reproduction
Why do living things need stable internal conditions?
For cells to function properly, irregardless of what’s happening outside of the body
What are the building blocks of cells?
Proteins
What is the difference between growth and development?
Growth involves an organism becoming taller and bigger. Development is when the organism becomes more complex