It is said that all muscles are grouped in antagonistic pairs. What does this mean? Is it literally true that they are antagonistic to each other? How… Read more “Biology Lesson 170: Antagonistic Muscle Pairs”
Category: Biology
Biology Lesson 160: Osmoregulation
“Think of marine mammals, which breathe air like we do but drink only salt water; and think of fish such as salmon which live part of their… Read more “Biology Lesson 160: Osmoregulation”
Biology Lesson 150: The Cause of Rapid Breathing
“When you find yourself breathing hard or gasping for breath, is this due to a lack of oxygen or an excess of carbon dioxide? Explain your answer,… Read more “Biology Lesson 150: The Cause of Rapid Breathing”
Biology Lesson 140: How the Bones of an Animal Could Tell Us What It Ate
“1. Suppose you found the bones of an unidentified animal. How could you learn about what the animal ate? What specific structures would give you clues about… Read more “Biology Lesson 140: How the Bones of an Animal Could Tell Us What It Ate”
Biology Lesson 110: Chordates
“What is a chordate? How are vertebrates different from chordates?” All vertebrates are chordates, but not all chordates are vertebrates. Chordates have a line of nerves, or… Read more “Biology Lesson 110: Chordates”
Biology Lesson 100: How Water Moves Through the Body of a Plant
“How does water move through the body of a plant? Plot the route, in general terms, from roots to leaves. Include all the major tissues, organs, and… Read more “Biology Lesson 100: How Water Moves Through the Body of a Plant”
Biology Lesson 90: Gymnosperms and Angiosperms
Gymnosperms and angiosperms are both plants. Each of the aforementioned terms describes the reproductive system of the plant. Gymnosperms are less evolved, simpler plants. Gymnosperms make two… Read more “Biology Lesson 90: Gymnosperms and Angiosperms”
Biology Lesson 70: Prokaryotes
“Many biologists are passionately fascinated by prokaryotes, the same way a “normal” person might be excited about sports, music, or some other hobby. What are some of… Read more “Biology Lesson 70: Prokaryotes”
Biology Lesson 60: Introducing More Hawks Into a Community
If one were to introduce more hawks into a community with plants, crickets, snakes, and hawks, it would increase the number of predators and therefore reduce prey.… Read more “Biology Lesson 60: Introducing More Hawks Into a Community”
Biology Lesson 50: Desert Versus Tropical Rainforest
Deserts are the driest biomes. They are mainly characterized by the fact that they get less than ten inches of rain per year. Any animals or vegetation… Read more “Biology Lesson 50: Desert Versus Tropical Rainforest”
Andromeda's RPC 