2.1 Quiz

When scientists make a model to study a system, such as a coral reef or the human body, which of these things should they make sure to include? Choose the correct answer.

• include only inputs
• do not include set boundaries
• include a limited number of parts
• include biotic and abiotic influences

Some organisms consist of one cell. Others consist of multiple cells. Which of these statements is true of a multicellular organism? Choose the correct answer.

• All cells have the same function
• Each cell has a different function
• Different types of cells have the same function.
• Different types of cells have different functions

If you had to compare the functions of a cell to the parts of a house, which part of a house would be a cell? Choose the correct answer.

• Roof
• bricks
• air conditioning
• pipe system

Part of the cell theory states that all living things are made up of one or more cells. Scientists had to find ways to test this theory. What research could they use to test it? Choose the correct answer.

• heating plant or animal tissue
• examining plant or animal tissue with a pH meter
• examining plant or animal tissue with a microscope
• measuring the mass of plant or animal tissue

Aurora studies the levels of structural organization of an animal's body. Which level would describe a dog's eye? Choose the correct answer .

• organ
• tissue
• organism
• organ system

Why can a cell be described as a complete system and also as part of a larger system?

• Because cells perform all the functions necessary for life on their own, but they also group together to form tissues and organs.
• Because cells cannot function without the support of other systems, such as the circulatory system.
• Because a cell is only one component of a multicellular organism and cannot exist independently.
• Because cells only carry out specific functions and depend on external factors to survive.

Why is the structure of a brain cell different from that of a red blood cell?

• Because all cells in the body are identical, but they look different because of their size.
• Because brain cells have a specific function in processing information, while red blood cells are specialized in transporting oxygen
• Because brain cells lack a nucleus, while red blood cells have a well-defined nucleus
• Because brain cells are larger than red blood cells and have more organelles

How do cells in unicellular and multicellular organisms compare in performing the tasks necessary for life?

• Single-celled cells are more complex and have more organelles than multicellular cells
• Multicellular cells can perform vital functions without needing to communicate with each other, while single-celled cells require constant communication
• Single-celled cells perform all vital functions on their own, while multicellular cells rely on specialization and collaboration between different cell types
• Cells of both types perform the same functions, but multicellular cells do so less efficiently