U1: Mid-Summative Review - Life, Hierarchy, Structure/Function

Rocks are not living because

• they never move

• they aren't needed for humans

• they are not made of cells

• they don't break down

Answer explanation

Rocks are not living because they are not made of cells.

The basic unit of structure and function in the human body is the....

• organ

• organ system

• cell

• tissue

Answer explanation

The basic unit of structure and function in the human body is the cell.

Which characteristic is shown: A plant switches position and follows the sunlight throughout the day.

• Grow and develop

• Respond to a stimulus

• Acquire and use energy

• Reproduce

Answer explanation

The characteristic shown is 'Respond to a stimulus' because the plant adjusts its position to follow sunlight, which is a response to an external stimulus.

Which of these is not true about all organisms?

• all living things are multicellular

• all living things obtain and use energy

• all living things reproduce

Answer explanation

The statement 'all living things are multicellular' is not true about all organisms, as some organisms are unicellular.

Which item listed is NOT a characteristic of life?

• adjusting to stimuli

• getting and using energy

• growing and developing

• breathing

Answer explanation

The correct choice is 'breathing' because breathing is not a characteristic of life. While organisms need to exchange gases, not all organisms breathe in the same way as humans do.

Which of the following is not a characteristic of life?

• Has cells

• Able to reproduce

• Able to adapt and evolve

• Movement

Answer explanation

The correct choice is 'Movement' because movement is not a universal characteristic of life, while having cells, reproducing, and adapting are common traits among living organisms.

Biology is the _____.

• study of abiotic factors

• study of life

• study of chemicals and their properties

• study of the physical properties of the world

Answer explanation

Biology is the study of life.

The building up or breaking down of materials is called ____.

• homeostasis

• metabolism

• multicellular

• stimulus

Answer explanation

The building up or breaking down of materials is called metabolism, making it the correct choice.

True or False: Living things must be multicellular.

• True

• False

Answer explanation

Living things do not have to be multicellular. They can be unicellular organisms like bacteria or yeast.

Something that was not alive, was never alive, and will never be alive is called ____.

• biotic

• dead

• living

• non-living

Answer explanation

Something that was not alive, was never alive, and will never be alive is referred to as non-living, making it the correct choice.