Gizmos Cell Types

Mia is studying biology and she learns about the smallest structural and functional unit of living organisms. What is the basic unit of life?

• Atom

• Cell

• Tissue

• Organ

Answer explanation

The basic unit of life is the cell, which is the smallest structural and functional unit of living organisms. Atoms are the building blocks of matter, while tissues and organs are made up of cells.

Sophia is observing different organisms in her biology class. She wants to identify a characteristic that is common to all living things. Which of the following should she choose?

• They breathe oxygen.

• They grow and reproduce.

• They can move.

• They all have a brain.

Answer explanation

The characteristic common to all living things is that they grow and reproduce. While some organisms breathe oxygen or can move, not all do. Additionally, not all living things have a brain.

Grace is curious about the tiny structures that make up living organisms. What tool should she use to see cells?

• Telescope

• Binoculars

• Microscope

• Magnifying glass

Answer explanation

To see cells, Grace should use a microscope, as it is specifically designed to magnify tiny structures like cells, which are too small to be seen with the naked eye. Other tools like telescopes and binoculars are not suitable for this purpose.

Aiden is exploring the forest and comes across various things. Which of the following things he finds is made of cells?

• Rock

• Water

• Air

• Mushroom

Answer explanation

Mushrooms are living organisms made of cells, while rocks, water, and air are not composed of cells. Therefore, the correct answer is mushroom.

Grace is studying biology and she wants to know what all cells need to survive?

• DNA

• Energy

• Cells

• All of these

Answer explanation

All cells need DNA for genetic information, energy to perform functions, and other cells for interaction and support. Therefore, the correct answer is 'All of these' as each component is essential for cell survival.

Ethan is looking through a microscope in his science class. He observes a tiny organism that consists of only one cell. Which of the following is he most likely observing?

• Dog

• Bacteria

• Tree

• Human

Answer explanation

Ethan is observing a tiny organism that consists of only one cell, which indicates he is likely looking at bacteria. Unlike dogs, trees, and humans, which are multicellular organisms, bacteria are unicellular.

(a)   is an example of a multicellular organism.

• Amoeba
• Bacteria
• Human
• Protist

Answer explanation

A human is a multicellular organism, composed of many cells that work together. In contrast, amoebas, bacteria, and protists are typically unicellular, consisting of a single cell.

Aiden is building a model of a plant cell for his biology class. He wants to know which part of the plant cell gives it structure and protection, specifically for plants. Can you help him identify it?

• Cell Wall

• Cell membrane

• Cytoplasm

• Chloroplast

Answer explanation

The cell wall is the part of the plant cell that provides structure and protection. It is a rigid layer that surrounds the cell membrane, helping to maintain the cell's shape and protect it from external stress.

Ethan is studying different types of cells in his biology class. He learns that one type of cell does NOT have a nucleus. Which type of cell is it?

• Animal Cell

• Plant Cell

• Bacteria

• Fungi

Answer explanation

Bacteria are prokaryotic cells, meaning they lack a nucleus. In contrast, animal, plant, and fungi cells are eukaryotic and contain a nucleus.

In a biology class, Maya and Arjun are discussing cell structures. Maya says that one type of cell has a nucleus while the other does not. What is the main difference between prokaryotic and eukaryotic cells?

• Eukaryotic cells have a nucleus, prokaryotic cells do not.

• Prokaryotic cells have a nucleus, eukaryotic cells do not.

• Only eukaryotic cells are alive.

• Prokaryotic cells are always multicellular.

Answer explanation

The main difference is that eukaryotic cells have a nucleus, while prokaryotic cells do not. This distinction is fundamental in biology, as it categorizes cells into two major types.