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Practice Exam June 2018, answers
Human Biology (BIOL1008)
University of Sydney
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01 What is the most common cause of postural hypotension? A. Pooling of blood in the feet B. Pooling of blood in the head C. Too much blood returning to the heart D. Too much blood leaving the heart 02 Cleavage stages of embryo development refer to stages from the zygote to the: A. 2-cell stage B. 4-cell stage C. Morula D. Blastocyst 03 ☒ ☒ ☒ ☑ Broad heritability is defined as A. The part of total phenotypic inheritance due to environmental variance B. The part of total phenotypic inheritance due to total genetic variance C. The part of total phenotypic inheritance due to maternal genetic variance D. The part of total phenotypic inheritance due to dominance genetic variance 04 ☑ ☒ ☒ ☒ ☒ ☑ ☒ ☒ The main function of lymph nodes is to: A. store lymph fluid and blood cells. B. store mature lymphocytes and macrophages. C. produce T-cells. D. filter the blood. ☒ ☒ ☒ ☑ 05 Which of the following statements about blood is CORRECT? A. Anaemia is solely a genetic disease of the blood. B. A person with blood type A has A-antibodies and B-antigens. C. Red blood cells make up most of the volume of the blood. D. Albumins and globulins are the major groups of blood proteins. 06 The thermic effect of food increases the basal metabolic rate by approximately A. 5% B. 10% C. 15% D. 20% 07 08 ☒ ☒ ☒ ☑ ☒ ☑ ☒ ☒ The conversion of food to useable energy in the body is about ___ efficient. A. 50% ☑ B. 30% C. 80% D. 65% ☒ ☒ ☒ Which of the following statements about digestion is INCORRECT? A. The stomach secretes alkaline mucus to neutralize HCl and aid in digestion. B. The surface area of the small intestine is increased by the presence of circular folds, villi and microvilli. C. Bile salts emulsify fats, which can then be effectively digested by enzymes. D. When acid enters the duodenum, it secretes secretin, which signals the stomach wall to stop sending chyme into small intestine. ☑ ☒ ☒ ☒ 12 If a eukaryotic cell has a single set of chromosomes, it is called A. haploid. B. diploid. C. polyploid. D. uniploid 13 Consider a group of 100 individuals (50 couples), all of whom carry a Mendelianinherited recessive sickle-cell disease allele. If 200 children were born to these couples, what percentage of the children would, theoretically, be carriers like their parents? A. 10 B. 50 C. 75 D. 25 14 ☒ ☑ ☒ ☒ B-cells are cells which A. secrete antibodies B. are responsible for producing T-cells C. are found in the thymus D. divide to form macrophages 15 ☑ ☒ ☒ ☒ ☑ ☒ ☒ ☒ In the eyeball the lining layer that contains the sensory cells is called the A. Retina B. Choroid C. Sclera D. Malleus ☑ ☒ ☒ ☒ 16 17 For long term energy storage, the human body uses: A. Glucose B. Glycogen ☒ ☒ C. Fats D. ATP ☑ ☒ The normal air pathway in the human respiratory system is A. pharynx- oesophagus-trachea-bronchus B. alveolus-bronchus-bronchiole-pharynx C. trachea-bronchus-alveolus-pharynx D. pharynx-trachea-bronchus-alveolus 18 Food intake and dietary patterns are influenced by: A. Geographical location B. Nutrition knowledge C. Food availability D. All of the above 19 ☒ ☒ ☒ ☑ In the diagram, the structures labelled I, J and K respectively are the ☒ ☒ ☒ ☑ 22 Which of the following groups accounts for the majority of microbial cells in the human gut? A. Viruses B. Methanogens C. Bacteria D. Fungi 23 The part of a neuron that conducts impulses away from the cell body is called a(n) A. axon B. dendrite C. neurolemma D. Schwann cell 24 ☒ ☒ ☑ ☒ ☑ ☒ ☒ ☒ Match the lymphatic organ with its function. 1. Tonsils: 2. Lymph nodes: 3. Spleen: 4. Thymus: V-Protect against bacteria from entering the pharynx from the nasal or oral cavity W-Filter lymph; house lymphocytes X-Destroy defective red blood cells; responds to foreign substances in the blood. Y-Site for the maturation of T cells. A. 1W, 4V, 2X, 3Y B. 1Y, 2V, 3W, 4X C. 1V, 2W, 3X, 4Y D. 1V, 2W, 3Y, 4X ☒ ☒ ☑ ☒ 25 26 27 Which of the following figures best depicts the number of female gametes over time? A. Figure A ☒ B. Figure B C. Figure C D. Figure D ☒ ☑ ☒ What is the normal tidal volume of a person at rest? A. 150 mL ☒ B. 250 mL ☒ C. 500 mL ☑ D. 750 mL ☒ When describing someone as "lactose intolerant", you are describing their: A. genotype B. phenotype C. alleles D. genome ☒ ☑ ☒ ☒ A. seminal vesicles B. seminiferous tubules C. spermatic cord D. sacrum 33 _____________ require(s) the presence of centrioles and spindle fibres in animal cells. A. Mitosis B. Meiosis C. Both mitosis and meiosis D. Neither mitosis nor meiosis 34 ☑ ☒ ☒ ☒ A child theoretically, is free of microbes at birth. However, within a few weeks, the child will be covered by ____________________ because ________________. A. diverse communities of microbes, the surface of the skin is hugely variable and nutritious B. a limited diversity of microbes, insufficient time for microbes to arrive C. a small number of different microbes, the child is regularly washed and dried D. specific microbes only in limited regions of the skin surface, the child is receiving antimicrobial support in breast milk from the mother 36 ☒ ☒ ☑ ☒ During development, extra tissue (such as webbing between fingers and toes) is removed by the natural process of _________. A. apoptosis B. parturition C. differentiation D. senescence 35 ☒ ☑ ☒ ☒ ☑ ☒ ☒ ☒ What types of bonds are formed between complementary DNA bases? A. glycosidic bonds ☒ B. hydrogen bonds C. phosphodiester bonds D. covalent bonds 37 Which of the following genotypes would result in a person with the blood group B Rh+? A. IAIB Dd B. IBIB dd C. IAi Dd D. IBi Dd 38 ☒ ☒ ☒ ☑ Chromatids of homologous chromosomes may exchange genetic material A. during prophase of mitosis. B. during interphase. C. during prophase I of meiosis. D. between meiosis I and meiosis II. 40 ☒ ☒ ☒ ☑ In the cardiovascular system A. resistance to blood flow is lowest in the arterioles. B. arterial blood pressure drives venous blood flow. C. deoxygenated blood is carried by the pulmonary veins. D. pressure on the systemic circulation is higher than pressure in the pulmonary circulation. 39 ☑ ☒ ☒ ☒ ☒ ☑ ☒ Muscle myosin binds directly to A. actin B. troponin C. tropomyosin D. sarcoplasmic reticulum ☑ ☒ ☒ ☒
Practice Exam June 2018, answers
Course: Human Biology (BIOL1008)580 DocumentsStudents shared 580 documents in this course
University: University of Sydney
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