1.1 The Diversity of Cells

Question 1

In some cells, the DNA is enclosed inside an organelle called the nucleus. Organelles are structures that perform specific functions within the cell.

Answer 1

Cell

Question 2

Organelles are structures that perform specific functions within the cell.

Answer 2

Cell Membrane

Question 3

Organelles made of eukaryotic cells are called eukaryotes. Many Eukaryotes are multicellular which means that they are made of many cells.

Answer 3

Organelle

Question 4

Many Eukaryotes are multicellular which means that they are made of many cells. Animals, Plants, and Algae are examples of single celled eukaryotes are amoebas and yeasts.

Answer 4

Nucleus

Question 5

are single celled organisms that do not have a nucleus or membrane-bound organelles.

Answer 5

Prokaryote

Question 6

Have a nucleus and other membrane-bound organelles.

Answer 6

Eukaryote

Question 7

a microscopic animal.

Answer 7

Animalcules

Question 8

In biology, cell theory is a scientific theory which describes the properties of cells. These cells are the basic unit of structure in all organisms and also the basic unit of reproduction. … However, many other scientists like Rudolf Virchow contributed to the theory.

Answer 8

Cell Theory

Question 9

Nearly all the proteins required by cells are synthesised by ribosomes. Ribosomes are found ‘free’ in the cell cytoplasm and also attached to rough endoplasmic reticulum. Ribosomes receive information from the cell nucleus and construction materials from the cytoplasm.

Answer 9

Cytoplasm Ribosomes

Question 10

The Archaea constitute a domain and kingdom of single-celled microorganisms. These microbes are prokaryotes, meaning that they have no cell nucleus or any other membrane-bound organelles in their cells.

Answer 10

Archaea

Question 11

Deoxyribonucleic acid is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.

Answer 11

DNA