Grade 6

Which statement was NOT included in cell theory?

• All living things are composed of cells.

• Living cells come only from other living cells.

• Each cell contains a cell membrane, cytoplasm, nucleus, mitochondria, and endoplasmic reticulum.

• Cells are the smallest structure of living things that can perform the functions necessary for life.

Why do multicellular organisms need so many cells?

• They need specialized cells to survive. Specialized cells perform a specific job/function.

• They need many cells to all do the same job/function.

• They need many cells to have a dancing cell party.

Which statement is true?

• Cells come in different shapes, but are all about the same size—very, very small.

• Cells come in different shapes and sizes.

• Cells all have the same shape, but come in different sizes.

• Cells are all the same shape and size—small and rounded.

A spore is a small structure, usually a single cell, produced by plants, fungi, and some microorganisms. In the right environment, a single spore can develop into a new, individual organism.

During observations of soil samples, scientists find tiny structures that appear to be spores.

Which experiment could the scientists use that would best determine if these tiny structures are spores?

• Test them for chemicals normally found in living cells.

• Place them in water and see if they change in shape or mass.

• Observe whether they go through the steps of cell division to form new cells.

• Observe whether they are made of atoms by using a high-powered microscope.

Jade places a fresh, thin slice of onion on a microscope slide to look for evidence that an onion is made of cells.

 

What are two observations Jade could make to provide evidence that an onion is made of cells?

• She observes that there are vertical lines dividing the specimen. She also observes that there are organelles floating around.

• She observes that there are specks of dirt from the garden. She also observes that the specimen has green sections.

• She observes cell walls and cell membranes. She also observes that there is a nucleus in each cell.

Which statement is correct?

• A group of organs work together to form an organ system
• Tissues that have the same function form an organ system
• Cell that have the same function form an organ
• Organ systems working together form a tissue

What is an organism?

• an individual living thing such as a plant, bacterium, animal, or fungi.

• a group of organs that work together to perform one or more functions.

• a group of tissues that perform a specific function or group of functions.

• groups of cells that have a similar structure and act together to perform a specific function.

• the smallest structural and functioning unit of an organism.

Which of these can only be found in a plant cell?

•  A nucleus
• A vacuole
• A chloroplast
• A mitochondrion

This is a example of ........

• cell
• organ system
• organ
• tissue

A rigid layer that lies outside the cell's  membrane is...

• Cytoskeleton
• Cilia
• Cell Wall
• Flagella