Variety Of Living Organisms

Which statement correctly describes a feature shared by all plants?

A student observes a cell under a microscope and notes that it has no chloroplasts, no cell wall, and stores carbohydrate as glycogen. The organism is multicellular. Which group does this organism most likely belong to?

Which pair correctly matches each organism to its storage carbohydrate?

Describe how fungi obtain their nutrients. Which statement includes both steps required for full marks?

A researcher discovers a microscopic, single-celled eukaryotic organism in pond water. It contains chloroplasts and has a cell wall. Which organism does it most closely resemble?

Which statement correctly explains why bacteria are classified as prokaryotic organisms?

Plasmodium causes malaria in humans. Through which route is Plasmodium transmitted to a human host?

A student writes: “Fungi and plants both have cell walls, so they must be in the same kingdom.” State which part of this reasoning is flawed.

Which feature is found in bacterial cells but not in animal cells?

Viruses are not classified as living organisms. Which row correctly explains why?

The tobacco mosaic virus (TMV) infects tobacco plants and causes visible symptoms on the leaves. What is the mechanism by which TMV causes these symptoms?

In a hospital, a patient is diagnosed with pneumonia. Which type of organism is the pathogen responsible, and what is its name?

A biology teacher tells her class: “All cells have a cell membrane, but not all cells have a cell wall.” Which group of organisms has cells with a cell membrane but no cell wall?

A student is comparing eukaryotic and prokaryotic cells. Which row correctly lists features found in prokaryotic cells but not in typical eukaryotic animal cells?

An organism is discovered deep underground. It is single-celled, has no nucleus, has a circular chromosome, and has plasmids. Scientists find it can survive without light and feeds on decaying organic matter. A student claims it must be a fungus because it feeds on dead material. Why is this classification incorrect?

Which of the following correctly describes the structure of a virus?

A farmer notices that a population of mosquitoes near his farm has increased dramatically. He is concerned about the health of his workers. Which disease should he be most concerned about, and what type of pathogen causes it?

Yeast is used in baking and brewing. To which kingdom does yeast belong, and what feature distinguishes it from most other members of that kingdom?

Define the term pathogen and state the four groups of organism or agent that can act as pathogens.

HIV causes AIDS in humans. A student states: “HIV is a living organism because it contains genetic material and can reproduce.” Identify the errors in this statement.