The passage describes the characteristics of different groups of organisms. Complete the passage by writing a suitable word or words in each of the spaces.
Plants are multicellular organisms that carry out photosynthesis. Their cells contain chloroplasts and have cell walls made of (1) ____________. They store carbohydrates as (2) ____________.
Bacteria are microscopic single-celled prokaryotic organisms. They do not have a nucleus but instead have a circular (3) ____________\ of DNA. They may also contain smaller, circular pieces of DNA called (4) ____________\ which often carry resistance genes. Their cell walls are composed of (5) ____________.
A well-known pathogenic bacterium is Pneumococcus, which causes the disease (6) ____________.
Unlike plants and bacteria, animal cells completely lack cell walls. Animals are multicellular and display (7) ____________\ coordination, allowing them to respond rapidly to stimuli. They store carbohydrate in their cells as (8) ____________.
Organisms from various kingdoms, as well as viruses, can cause disease in hosts. Any organism or virus that causes disease is known as a (9) ____________.
An example of a viral disease is (10) ____________, which is caused by HIV and severely weakens the human immune system.
