Unit 1: Studying Living Things

True or False: Science is a way of gaining knowledge about the natural world that starts with a question.

• True

• False

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NGSS.MS-LS1-1

Match each example to the science practice it best represents.

• observation

• A group of biology students test different brands of fertilizer to determine which brand produces the tallest sunflower plants.

• asking questions

• Julie wonders what light levels will result in faster germination of sunflower seeds.

• planning and carrying out investigation

• Students noticed that birds fly south for the the winter.

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What is an example of a bitoic factor?

• water

• fish

• rocks

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Which characteristic of life refers to the ability to maintain a steady state of internal conditions?

• offspring

• metabolism

• homeostasis

Max discovered a new object and wants to know if it is alive. Max observes the following characteristics:

• The object moves.

• The object is not composed of cells.

• The object changes shape when placed on a table.

Which statement describes this object?

• The object is alive.

• The object is not alive.

Which is the best description of an organelle?

• Organelles are structures located in the nucleus.

• An organelle is a structure that performs a specific job in the cell.

• Organelles are structures that allow eukaryotic cells to carry out more functions than prokaryotic cells.

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NGSS.MS-LS1-2

Match each image to the term that describes it.

• organ system

• 
• cell

• 
• organism

• 
• tissue

• 
• organ

• 

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NGSS.MS-LS1-1

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Which sub-unit makes up large molecules referred to as polymers?

• monomers

• peptide

• R-group

Carbon’s ability to form four bonds makes it uniquely suited to form macromolecules. Why is that?

• Carbon forms short, simple carbon atoms.

• Carbon forms covalent bonds with other carbon atoms.

• Carbon forms covalent bonds that exist in a single plane.

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Which of the following organic compounds is the main source of energy for living things?

• carbohydrates

• lipids

• proteins

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