Question

unit 2 vocabulary part i
the wonders of life: an overview
life is full of amazing things! it all starts with the cell, which is the basic building block of
life. some living things are made up of just one cell, called unicellular organisms, while others
are made from many cells and are called multicellular organisms. each cell can react to things
around it, which we call stimuli, by making a response. this helps the organism stay balanced
and healthy, a process known as homeostasis. this balance is important for growth, when
things increase in size and mass, and development, changes that occur within an organisms
life cycle.
living things can make more of themselves through reproduction. there are two ways
this happens: sexual reproduction, where two parents mix their genetic material, and asexual
reproduction, where a single organism makes a copy of itself. dna is the special code that
carries all the information needed for heredity, passing traits from parents to their kids.
metabolism is all the chemical reactions happening in an organism, giving it the energy it needs
to live.
over time, species change through evolution, which helps them survive better in
different environments. this happens because of adaptation, which lets living things adjust to
their surroundings. all these changes are written in dna, showing how all life on earth is
connected and different at the same time. through these amazing processes, life keeps going,
showing just how incredible living things really are!

1. what is the difference between asexual reproduction and sexual reproduction?

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1. describe the process of homeostasis.

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1. what is the word for the chemical reaction that happens in all organisms, allowing it to

gain energy and survive?
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1. what is the difference between a multicellular organism and a unicellular organism?

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Explanation:

1. The text states that sexual reproduction involves two parents mixing genetic material, while asexual reproduction is when a single organism makes a copy of itself.
2. Homeostasis is when each cell reacts to stimuli (things around it) by making a response, which helps the organism stay balanced and healthy.
3. The text defines metabolism as all the chemical reactions happening in an organism, giving it the energy it needs to live.
4. The text mentions that some living things are made up of just one cell (unicellular organisms), and others are made from many cells (multicellular organisms).

Answer:

1. Sexual reproduction: two parents mix genetic material. Asexual reproduction: a single organism makes a copy of itself.
2. Each cell reacts to stimuli (things around it) by making a response, helping the organism stay balanced and healthy.
3. Metabolism
4. Multicellular organism: made from many cells. Unicellular organism: made up of just one cell.