1) . Nutrients, oxygen, and other substances are needed by our bodies. From what source do cells get their food? a) blood b) carbon dioxide c) oxygen d) other cells 2) Blood vessels carry the blood throughout the body. Which type of blood vessel carries  blood away from the heart? a) arteries b) capillaries c) veins d) all of these 3) In the last part of the terminal bronchioles are a tiny bubble-like bunch of structures   a) air sacs b) lungs 4) What is the main function of blood in the circulatory system? a) Where the carbon dioxide is absorbed b) Pumps the blood throughout the body c) Where the exchange of gases and nutrients takes place d) Carries the gases, nutrients, and other molecules to and from the different parts of the body 5) Respiratory diseases can be triggered by allergies brought by pollens, dust, fumes, certain foods and medications, air pollutants, and bacteria? a) asthma b) emphysema c) rhinitis d) tuberculosis 6) Which of the following negative effects of smoking refers  to the buildup of fats, cholesterol, and other substances that trigger blood clots? a) asthma b) arteriosclerosis c) atherosclerosis d) emphysema 7) Which of the following statements about the circulatory system is false? a) Absorbs oxygen from the air and transfers it to all parts of the body. b) To transport carbon dioxide to the body's cells and carry away oxygen from the cells c) Pumps the blood with the oxygenated red blood cells from the lungs via the arteries throughout the body. d) Supplies tissues in the body with oxygen and other nutrients transport hormones and remove unnecessary waste products. 8) One of the negative effects of cigarette smoking on our circulatory system is ANEURYSM. Which of the following best defines the ANEURYSM? a) sudden interruption in the blood supply of the brain. b) inflammation of the lining outside the heart due to infection. c) enlargement of an artery caused by weakness in the arterial wall d) disease in which tumors formed as a result of irregular and uncontrolled cell growth. 9) Which of these diseases may a person to experience difficulty breathing because of the mucus phlegm forming in the airways obstructing the flow of oxygen into the lungs? a) asthma b) bronchitis 10) Which of the following refers to the development of excessive  constriction of the arterioles that can cause heart failure or kidney failure? a) aneurysm b) atherosclerosis c) hypertension d) stroke 11) A type of chromosome pair that has a similar structure and shape and has genes that code for proteins that express the same trait is known as ________. a) heterozygous chromosome b) homologous chromosome c) homozygous genes d) inheritance Trait 12) Which of the following is considered the basic unit of heredity? a) chromosome b) enzyme c) gene d) trait 13) Which structure in a cell can chromosomes be found? a) cell membrane b) centromere c) nucleus d) mitochondrion 14) The environmental conditions that keep a population from increasing in size and help balance ecosystems are called __________. a) abiotic factor b) biotic factor c) environmental factor d) limiting factor 15) What do you call the process wherein autotrophs make their own food? a) carbon fixation b) cellular respiration c) photosynthesis d) protein synthesis 16) How do the circulatory system and respiratory systems work together? a) Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. b) Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart. c) The circulatory and respiratory systems work together by absorbing carbon dioxide from the air and transferring it to all parts of the body. d) The circulatory and respiratory systems work together by absorbing oxygen from the air and transferring it to all parts of the body while absorbing carbon dioxide from the body and releasing it into the air. 17) What could be the possible respiratory diseases that the learner acquired? a) atherosclerosis b) emphysema c) myocarditis d) pneumonia 18) Applying what you have learned about heart anatomy, which of the following statements is true?ing  a) The human heart comprises three (3) chambers b) The innermost wall layer of the heart’s structure is the pericardium c) The atrium acts as a pumping chamber and is smaller than the ventricles d) Ventricles are stronger pumping chambers that move blood to the lungs and body 19) When you breathe in or inhale, the diaphragm muscle contracts. The following actions happen during exhalation, except: a) the rib cage contracts inward b) the volume of the chest cavity decreases c) the diaphragm contracts and pulls downward d) the pressure within the chest cavity increases 20) The blending of colors among the bougainvillea flowers is an example of what pattern of non-Mendelian Inheritance? a) Codominance b) Incomplete dominance c) Multiple Alleles d) Both A and B 21) Which of the following shows the relationship between DNA, a gene, and a chromosome? a) A gene is composed of DNA but is not related to chromosomes b) A gene contains hundreds of chromosomes, which are composed of protein c) A chromosome contains hundreds of genes, which are composed of proteins. d) A chromosome contains hundreds of genes, which are composed of DNA. 22) Which of the following theories does not explain the chromosomal basis of inheritance? a) Genes are located in the chromosomes. b) Chromosomes and their related genes undergo segregation during meiosis c) Mendel’s law of inheritance does not relate to the behavior of chromosomes in meiosis d) Chromosomes and their related genes undergo independent assortment in the formation of gametes 23) Where do photosynthesis and cellular respiration take place? a) Respiration and photosynthesis both occur in plants b) Respiration and photosynthesis both occur in animals c) Respiration occurs in chloroplast and photosynthesis occurs in mitochondria d) Respiration occurs in mitochondria and photosynthesis occurs in the chloroplast 24) How many ATP molecules are needed to split glucose into two? a) 2 ATP b) 4 ATP c) 6 ATP d) 8 ATP 25) A scientist observes two butterflies with similar wing patterns. What could be done  to show that the two butterflies belong to the same species? a) The butterflies share a habitat b) The butterflies pollinate the same flowers. c) The butterflies mate with each other and produce fertile offspring. d) The butterflies make a chrysalis and not a cocoon for metamorphosis.

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