Sophia - Human Biology - Unit 1 Challenge 1

1 — Scientific Method Identify the steps of the scientific method in a given scenario. Peter noticed that iron needles placed beside a magnet attract other iron needles. If he is following the scientific method to find out why this happens, what should he do next? • a.) Predict that the iron objects he places next to a magnet will attract other iron objects. • b.) Place several different iron objects next to a magnet and observe whether they attract other iron objects. • c.) Develop a hypothesis that magnets transfer their properties to iron objects. • d.) Ask whether magnets can transfer their properties to iron objects. 2 — Evaluate Information Determine whether information is credible. Which of the following statements represents an opinion? • a.) Butterflies are related to moths. • b.) Butterflies are often colorful. • c.) Moths are more common in Jay's neighborhood than butterflies. • d.) Butterflies are not as interesting as some people say. 3 — Organisms Understand the basic characteristics of organisms and how they're classified. Which of the following characteristics is shared by all living things? • a.) All living things are made up of cells. • b.) All living things have family structures. • c.) All living things have either hair, fur or scales. • d.) All living things think. 4 — Organ Systems Identify organ systems based on their characteristics. Which organ system controls and regulates the composition of blood? • a.) Lymphatic System • b.) Circulatory System • c.) Urinary System • d.) Endocrine System 5 — Homeostasis Understand how the human body maintains homeostasis. Which of the following represents the correct flow of information during homeostasis? • a.) Integrator → Sensor → Effector • b.) Effector → Integrator → Sensor • c.) Sensor → Effector → Integrator • d.) Sensor → Integrator → Effector