7th Grade Topic 1 - Lessons 2 & 3

Is this the correct way to write the binomial nomenclature for humans?

An organism that lives on or in a host and causes it harm is a ___________.

Mules cannot reproduce because ______________.

Which is NOT one of the three domains?

The scientific study of how living things are classified.

Unicellular organisms whose cells lack a nucleus.

The process of grouping things based on their similarities.

The most harmful protists are ____________, organisms that benefit from with on, or in a host.

All protists are __________. They have a nucleus, which contains their genetic material.

Bacteria are everywhere and most are not infectious.

A tiny, nonliving particle that enters and then reproduces inside a living cell

Which are types of fungi?

Some fungi help us because they are__________ , meaning they break down the chemicals in dead organisms.

Domain _________ consists of eukaryotes that DO have a nucleus.

Some species are better adapted than others and will live longer to reproduce more.

The domain Eukarya is divided into four kingdoms: animals, plants, fungi and ___________.

A ___________is a substance introduced in the body to help produce chemicals that destroy specific viruses.

These make up the great majority of organisms on Earth.

The control center of the cell’s activities.

Considered the "junk drawer" kingdom.

A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.

Classification system in which organisms are given a unique, two-part scientific name indicating the genus and species.

An organism that provides a source of energy for a virus or another organism is a__________.

The process of change over time

Bacteria are ________. The genetic material in their cells is not contained in a nucleus.