BIOS 195 Midterm

(TCO1) The level of organization in which different multiple types of tissues join together is called the Answer: System Level (TCO1) The process by which unspecialized cells become specialized cells is called Answer: differentiation. (TCO1) In a negative feedback control system, the response of the effector to a stimulus Answer: reverses the original stimulus (TCO1) Which of the following is an example of a positive feedback system in the human body? Answer: Lactation (TCO1) Baroreceptors in the feedback system that control blood pressure sense changes in Answer: the force of blood as it presses against the walls of blood vessels. (TCO2) is an example of an element. Answer: Carbon (TCO2) All atoms of an element have the same number of . Answer: protons (TCO2) Isotopes of an element have the same number of and different numbers of . Answer: protons; neutrons (TCO2) The first electron shell of an atom can hold a maximum of electron(s). Answer:2 (TCO2) The bond between oppositely charged ions is a(n) bond. Answer: Ionic (TCO3) Endocytosis is an example of Answer: active transport. (TCO3) Which of the following is necessary for simple diffusion to take place? Answer: A concentration gradient (TCO3) Chromatin is found in the Answer: Nucleus (TCO3) Which of the following organelles are commonly referred to as the powerhouses of a cell? Answer: Mitochondria (TCO3) The human somatic cells contain chromosomes. Answer: 46 (TCO3) The protein synthesis process called translation requires Answer: ribosomes. (TCO4) Which of the following is NOT an enzyme used to digest carbohydrates? Answer: Enterokinase (TCO4) Which of the following organs is NOT an accessory structure of the digestive system? Answer: Spleen