CARI BB E AN E XA MINA TIONS C OUN CIL REPORT ON CANDIDATES’ WORK IN THE SECONDARY EDUCATION CERTIFICATE EXAMINATION JANUARY 2012 HUMAN AND SOCIAL BIOLOGY GENERAL PROFICIENCY EXAMINATION Copyright © 2012 Caribbean Examinations Council St Michael‚ Barbados All rights reserved. 2 GENERAL COMMENTS The 2012 examination was the seventh January sitting of Human and Social Biology‚ offered at the General Proficiency level. The format of the examination was different from that
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found in all living things making them the basic units of life and that all cells come from other cells. In order to be classified as a cell‚ the object in question must be able to reproduce‚ respond to chemical signals‚ obtain energy‚ maintain homeostasis‚ and undergo evolution. All cells can be divided into two different categories: prokaryotes or eukaryotes. Bacteria and archaea are classified as prokaryotes while animals and plants are eukaryotes. Prokaryotes are small and unicellular. Due to
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ages‚ thyroid hormones play a role in protein synthesis and breakdown‚ increase body heat production in times of prolonged cold weather‚ and set basal metabolic rate. Calcitonin is also regulated by the thyroid gland and is involved with calcium homeostasis between the bone and the circulation. The parathyroid glands are two sets of organs associated with the thyroid gland. The chief cells produce parathyroid hormone (PTH) whose main function is to regulate calcium levels in the body. PTH can stimulate
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the body heat from below 37 degrees to about 37 degrees. 13. a. It could be helpful‚ as a positive loop could keep you doing something that keeps you in homeostasis‚ such as eating to gain energy when you are running low on energy. b. It could be helpful‚ as a negative loop could keep you from doing something that could get you out of homeostasis‚ such as reducing your alcohol level when they are too high. 14. The signal is the baby pushing against the cervix‚ and the response is the uterine walls
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Physiological needs‚ according to Maslow‚ are the most basic fundamental human needs because all other needs become secondary until these basic physiological needs are met (Cherry n.d.). Physiological needs cover two main concepts: homeostasis and appetite (Datta 2011). Homeostasis is defined as “the tendency of a system‚ especially the physiological system of higher animals‚ to maintain internal stability‚ owing to the coordinated response of its parts to any situation or stimulus that would tend to
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Lesson 1 The goal of science is to provide explanations for events in the natural world and to understand patterns in nature to make useful predictions about natural events. Scientific methodology involves observing and asking questions‚ making inferences and forming hypotheses‚ conducting experiments‚ collecting and analyzing data‚ and drawing conclusions. Key Terms 1. Science- organized way of gathering and analyzing evidence about the natural world 2. Observation- the act of noticing and
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NAME:____________________________ REGULATION REVIEW - HONORS [pic] ENDOCRINE SYSTEM 1. Explain how the endocrine system aids humans in maintaining homeostasis. 2. Consider the following diagram of the human endocrine system: [pic] a. Label each number with the appropriate term. b. Which numbered structure produces hormones that regulate blood sugar levels? c. Which numbered structure produces hormones that stimulate egg
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down to the bones. 3. Waugh and Grant(2010) Nervous system- the nervous system detects and responds to changes inside and outside the body. Together with the endocrine system‚ it control many vital aspects of the body function and maintains homeostasis. 4. Parker and Mation( 2007) Skin‚ Hair‚ and Nail system- Together skin‚ hair and nails are known as the integumentray They repel physical damage and hazards such as microorganisms and radiation. 5. Parker and Mation( 2007) Lymphatic
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keeping up with the material as it is presented you know this stuff. Don’t get overwhelmed by these study points. These are simply to guide you through the large amount of information. Good luck! 2. Know how negative feedback works to maintain homeostasis. Use terms effector‚ control center stimulus‚ etc to explain. Using mean arterial pressure describe how a decrease triggers reset back to normal mean arterial pressure. 3. Understand how positive feedback works. Give an example that was discussed
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4th Grade Science Heart Test #1 Dr. Whalen Name__________________ Date__________________ 1. The semilunar valves are located at the beginning of large vessels that carry blood _____ from the heart. a. Towards b. Away c. Valve d. Softly 2. The atrium and ventricle on each side of the heart are separated by one-way valves called ______. a. Atrioventricular valves b. Astrophysical valves c. Primary valves d. Pulmonary valves 3. The AV valves allow blood to flow in only one direction – from the ______
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