Download gsu biology 1104 FINAL Questions With Complete Solutions Graded A+ 2025 and more Exams Nursing in PDF only on Docsity!
gsu biology 1104 FINAL Questions With Complete Solutions
Graded A+ 2025
Communication between neurons at synapses relies on A) release of neurotransmitters from a pre-synaptic neuron B) binding of neurotransmitters to receptors on dendrites C) diffusion D) All of the above E) only A and B - ANSWERS-D Which one of the following hormones is released by the posterior pituitary? A) TSH B) gonadotropin releasing hormone C) growth hormone D) adrenaline E) none of the above - ANSWERS-E The region of the brain that controls involuntary actions such as breathing and "muscle memory" is the: A) thalamus B) cerebrum. C) midbrain D) hindbrain. - ANSWERS-D Which pair of hormones is responsible for keeping blood calcium levels within normal ranges in some animals? A) thyroxine and thymosin
B) aldosterone and insulin C) ADH and growth hormone D) calcitonin and parathyroid hormone E) insulin and glucagon - ANSWERS-D
. In a typical ovarian cycle of humans, on what day is an egg released? A) 1 B) 7 C) 14 D) 21 - ANSWERS-C True or False. Neural cells maintain a resting potential of positive, sixty millivolts. A) True B) False - ANSWERS-B Which one of the following is a chemoreceptor? A) pressure receptors in the skin. B) hair cells in the ear C) olfactory receptors in the nose D) rods and cones in the eye E) all of the above - ANSWERS-C Brain tumors result from uncontrolled cell division. Yet in adult humans, most neurons in the brain do not divide at all. Which of the following explains this? A) Brain tumors usually occur due to unstoppable division of bone cells. B) Brain tumors are usually formed from glial cells, the supporting cells of the
B) thryoxine C) leupeptin D) secretin E) atrial natriuretic peptide - ANSWERS-D Which hormone causes uterine contractions during human childbirth? A) oxytocin B) thryoxine C) ADH D) cholecystokinin E) GnRH - ANSWERS-A Which of the following is a hormone produced only by humans as embryos and is used in pregnancy tests? A) luteinizing hormone B) human chorionic gonadotropin (HCG) C) anti-diuretic hormone D) GHRH E) gonadotropin releasing hormone - ANSWERS-B Which hormone controls the metabolic rate in humans? A) human chorionic gondatropin B) thryoxine C) leupeptin D) secretin
E) atrial natriuretic peptide - ANSWERS-B Nerve nets are found in A) insects B) flatworms. C) humans. D) cnidarians. E) octopi - ANSWERS-D Visual information in humans is processed in the __________ of the human cerebral cortex. A) occipital lobes. B) temporal lobe. C) hippocampus. D) parietal lobes. E) parietal lobes. - ANSWERS-A
. Which one of these hormones stimulates sperm production in men? A) estrogen B) secretin C) LH D) FSH E) progesterone - ANSWERS-D Giantism in humans can be due to excess production of ______________ by the ____________. A) parathyroid hormone; parathyroid. B) growth hormone; liver. C) IGF-1; liver. D) growth hormone; posterior pituitary. E) somatostatin; adrenal cortex. - ANSWERS-C Using iodized salt can prevent many cases of A) menstrual cramps. B) goiter.
E) neurotransmitter activity. - ANSWERS-A You just finished a very large meal on Thanksgiving Day and are struggling to stay awake as you watch a football game. Which part of your nervous system is triggering this "rest and digest" response? A) Somatosensory nervous system B) Limbic system C) parasympathetic nervous system D) Neural excitement center E) Sympathetic nervous system - ANSWERS-C Following a stroke, Phillip is having difficulty with understanding what people are saying to him. Which one of the following parts of Phillip's cerebral cortex is likely damaged? A) frontal lobe B) temporal lobe C) hippocampus D) amygdala E) cerebellum - ANSWERS-B BONUS #1: Prior to discovery of insulin as described in the video links provided to you with lecture, what treatment regimen was used to keep patients alive for as much as several years in the early 1900's? (2 points) - ANSWERS-Starvation diets/very low caloric intake Imagine a scenario in which a patient has suffered spinal cord trauma in her low back. The patient can move her LEFT leg, but she cannot feel pressure or pain in the LEFT leg. Part A. Which of the following is likely damaged? CIRCLE ONE (0.5 point)
A.Ventral root associated with left leg B.Dorsal root associated with left leg C.Severed spinal cord - ANSWERS-B why the patient is able to move her leg voluntarily. - ANSWERS-The spinal cord is intact, so she can still send signals from her brain to her muscles. Motor signals leave the cord via the ventral root, thus the ventral root is intact Explain why the patient is unable to perceive pressure or pain. - ANSWERS-Dorsal root carries sensory information into the spinal cord. If the signal cannot enter the spinal cord, it cannot reach the brain and be perceived. Imagine fish farmers are raising tilapia fish and feed the fishes a hormone that increases weight of the fish. The hormone is only produced by fishes (i.e. humans do not produce this hormone). Would the hormones affect human physiology if the hormone is present in the meat that people eat? Justify your answer thoughtfully, giving attention to the mechanism by which hormones elicit responses in target cells. - ANSWERS-These hormones likely are safe and have little effect on humans because we lack receptors for the hormones. Do you expect spinal reflexes of her left leg to be functional? Why or why not? - ANSWERS-No. The pathway for the spinal reflex is interrupted by damage to one of the roots. Thus, sensory neurons detecting stimuli such as a painful pinch would not be able to communicate with motor neurons. Oxygen moves from water into fish blood by across the gills. a. bulk flow b. diffusion c. osmosis d. active transport e. secondary active transport - ANSWERS-B Delivery of gases to and from cells of most insects a. relies on the circulatory system b. is primarily controlled by hemoglobin embedded in the cuticle c. relies primarily during flight on movement of air across pores in the wing
e. their limbs are not adapted to support their bodies on land - ANSWERS-d Lungfish are a. jawless fish b. ray-finned fish c. lobe-finned fish d. amphibians e. cartilaginous fish - ANSWERS-c True or False? You can ALWAYS determine if a vessel is an artery or vein based on the oxygen content of the blood it carries? a. True b. False - ANSWERS-b Which of the following features is found in humans but not in hagfish? a. vertebrae b. pharyngeal gill slit c. notochord d. dorsal, hallow nerve chord e. all of the above are found in both hagfish and humans - ANSWERS-a Earthworms are members of the phylum a. arthropoda b.turbellaria c. platyhelminthes d. annelida
e. nematoda - ANSWERS-d In humans, the body needs to maintain carbon dioxide within a narrow range. If the blood CO2 levels drop too low, the body responds by a. using positive feedback to increase oxygen levels b. using positive feedback to further lower the CO2 levels c. using negative feedback to return the CO2 levels to normal d. using negative feedback to reduce oxygen levels e. establishing a lower CO2 as a new set point - ANSWERS-c All respiratory systems possess a. a moist gas exchange surface b. thin surfaces c. a large surface area d. all of the above - ANSWERS-d Which of the following germ layers gives rise to your nervous system? a. ectoderm b. mesoderm c. endoderm - ANSWERS-a Coel - ANSWERS-cavity within a body stoma - ANSWERS-mouth platus - ANSWERS-flat cnido - ANSWERS-sting pod - ANSWERS-foot
