Biology Review

Some plant roots grow with mycorrhiza fungi. The fungi absorb water and minerals and pass them on to the plant and receive carbohydrates from the plant. This is an example of —

• predation

• parasitism

• competition

• mutualism

In the diagram, which organism provides nutrients for the largest number of other organisms?

• Herring

• Snapper

• Bluefish

• Seal

Which order of diagrams would show primary succession in an area that had never before been occupied by living organisms?

• A, C, B, D

• C, A, B, D

• D, B, C, A

• B, A, C, D

Most populations introduced to a new ecosystem grow until factors such as lack of food and overcrowding limit their growth, as illustrated above. What does the portion of the graph labeled B represent?

• Exponential growth

• Slowing growth

• Birthrate decrease

• Death rate increased

Which pair of structures best shows that plant cells have functions different from animal cells?

• Cytoplasm and mitochondria

• Chloroplasts and cell walls

• Nuclei and centrioles

• Ribosomes and cell membranes

Which of these statements best summarizes the cell theory?

• Cells contain a nucleus and other parts.

• Cells come in different shapes and sizes.

• Cells are the building blocks of living things.

• Cells can be seen through a microscope.

In the cell membrane model shown above, the molecules which move large molecules into and out of the cell are known as —

• cholestrol

• proteins

• lipids

• carbohydrates

Unlike plants, fungi cannot make their own food because they do not have —

• roots

• hyphae

• spores

• chlorophyll

The eukaryotic organism described above should be classified as —

• an animal

• a plant

• a fungus

• a bacterium

Which of these could be successfully treated with antibiotics?

• COVID-19

• Influenza

• Strep throat

• HIV