Skip to ContentGo to accessibility pageKeyboard shortcuts menu
OpenStax Logo
Concepts of Biology

Review Questions

Concepts of BiologyReview Questions


The first forms of life on Earth were thought to be_______.

  1. single-celled plants
  2. prokaryotes
  3. insects
  4. large animals such as dinosaurs

The first organisms that oxygenated the atmosphere were _______.

  1. cyanobacteria
  2. phototrophic organisms
  3. anaerobic organisms
  4. all of the above

Which of the following consist of prokaryotic cells?

  1. bacteria and fungi
  2. archaea and fungi
  3. protists and animals
  4. bacteria and archaea

Prokaryotes stain as Gram-positive or Gram-negative because of differences in the _______.

  1. cell wall
  2. cytoplasm
  3. nucleus
  4. chromosome

Prokaryotes that obtain their energy from chemical compounds are called _____.

  1. phototrophs
  2. auxotrophs
  3. chemotrophs
  4. lithotrophs

Bioremediation includes _____.

  1. the use of prokaryotes that can fix nitrogen
  2. the use of prokaryotes to clean up pollutants
  3. the use of prokaryotes as natural fertilizers
  4. All of the above

What event is thought to have contributed to the evolution of eukaryotes?

  1. global warming
  2. glaciation
  3. volcanic activity
  4. oxygenation of the atmosphere

Mitochondria most likely evolved from _____________.

  1. a photosynthetic cyanobacterium
  2. cytoskeletal elements
  3. aerobic bacteria
  4. membrane proliferation

Protists with the capabilities to absorb nutrients from dead organisms are called_____________.

  1. photoautotrophs
  2. autotrophs
  3. saprobes
  4. heterotrophs

Which parasitic protist evades the host immune system by altering its surface proteins with each generation?

  1. Paramecium caudatum
  2. Trypanosoma brucei
  3. Plasmodium falciparum
  4. Phytophthora infestans

Which polysaccharide is usually found in the cell walls of fungi?

  1. starch
  2. glycogen
  3. chitin
  4. cellulose

What term describes the close association of a fungus with the root of a tree?

  1. a rhizoid
  2. a lichen
  3. a mycorrhiza
  4. an endophyte
Order a print copy

As an Amazon Associate we earn from qualifying purchases.


This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's permission.

Want to cite, share, or modify this book? This book uses the Creative Commons Attribution License and you must attribute OpenStax.

Attribution information
  • If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:
    Access for free at
  • If you are redistributing all or part of this book in a digital format, then you must include on every digital page view the following attribution:
    Access for free at
Citation information

© Jan 8, 2024 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.