Living Organisms: Key Features and Differences

<p>A diverse kingdom of mostly single-celled eukaryotes. (A)</p> Signup and view all the answers

<p>Through a variety of methods, including photosynthesis, consuming other organisms, and saprotrophic nutrition. (B)</p> Signup and view all the answers

<p>Eukaryotic cells have a nucleus, while prokaryotic cells do not. (D)</p> Signup and view all the answers

<p>Viruses lack a cellular structure. (B)</p> Signup and view all the answers

<p>To protect the virus's genetic material. (B)</p> Signup and view all the answers

<p>An organism that obtains energy from breaking down dead organic matter. (D)</p> Signup and view all the answers

<p>Photosynthesis (B)</p> Signup and view all the answers

<p>Euglena (C)</p> Signup and view all the answers

<p>They cannot reproduce independently of other organisms. (D)</p> Signup and view all the answers

<p>Prokaryotic cells have DNA in the cytoplasm, while eukaryotic cells have DNA enclosed within a nucleus. (C)</p> Signup and view all the answers

<p>Viruses infect only bacteria. (B)</p> Signup and view all the answers

<p>Bacteria (A)</p> Signup and view all the answers

The main classification categories for living organisms: animals, plants, fungi, protists, and bacteria.

Organisms whose cells have a nucleus and chromosome DNA structure.

Organisms without a nucleus, their DNA is free-floating in the cell.

Organisms made up of multiple cells, like humans and animals.

Organisms that obtain energy by consuming other organisms.

Organisms that produce their own energy, primarily through photosynthesis.

Includes multicellular mushrooms and unicellular yeast. They are heterotrophs and can't photosynthesize.

The network of thread-like structures (hyphae) in multicellular fungi.

Fungi feed by secreting enzymes and absorbing broken down nutrients.

Mostly unicellular organisms that can be plant-like (photosynthesize) or animal-like (consume others).

Single-celled prokaryotic organisms found everywhere, some are beneficial or pathogenic.

Non-cellular entities that require a host to reproduce and are considered pathogens.

Organisms that cause disease; includes some bacteria, fungi, and all viruses.

Common viruses include influenza, HIV, and COVID-19.