Archives: Quiz

1) growth at two replication forks arising from a single origin of replication produce a “bubble” as daughter dna molecules form. 2) metamorphosis is a change in form and physiology that occurs during the development of an insect. Answer: true […]

1) an extracellular matrix helps some cells to adhere to neighboring cells. 2) during the replication of dna, dna polymerase has to synthesize the daughter strand in the 5′ to 3 direction because dna polymerase can only join nucleotides to […]

1) all chordates are also vertebrates. 2) vascular tissue extends through the roots, stems, and leaves of the entire plant. Answer: true 3) both living and nonliving entities adapt to the environment Answer: false 4) altruism is very rare in […]

1) based on this tree, mammals are as closely related to birds as they are to snakes. 2) transgenic plants must be approved by the food and drug administration before they are considered safe for human consumption. Answer: true 3) […]

1) polygenic traits such as height or weight are often influenced by the environment of the organism. 2) migratory birds store energy as glycogen which is lighter than fat. Answer: false 3) the hemocoel is an open space in an […]

1) snakes, frogs, squirrels and humans are all classified as being homeothermic. 2) diagnostic traits can be used to distinguish between species of living organisms only. Answer: false 3) the first species to begin secondary succession are called pioneer species, […]

1) conservation biology is a field that relies on multiple other disciplines to support it. 2) gene cloning can be accomplished by recombinant dna technology and polymerase chain reactions. Answer: true 3) the hardy-weinberg equilibrium is usually met in populations […]

1) both t3 and t4 are produced in the thyroid and are responsible for increasing the metabolic rate of specific organs in the body. 2) it is estimated that an average of two or three cross-overs occur per human chromosome. […]

1) extinction can occur if a species is unable to adapt to a changing environment. 2) gene therapy is being used in cancer patients to make healthy cells more tolerant of chemotherapy and to make tumors more vulnerable to chemotherapy. […]

1) the most successful mammals belong to the marsupials group. 2) a community that contains a low species diversity will often have a high species richness. Answer: false 3) the gymnosperms produce seeds that are enclosed within a fruit. Answer: […]

1) both the neural and endocrine systems play a role in coordinating body activities. 2) most chromalveolateshave the alternation of generations life cycle, but some species of fungus have a diplontic life cycle. Answer: true 3) chemiosmotic atp synthesis occurs […]

1) the mechanism of stabilizing the gfr based on the tendency of smooth muscle to contract when stretched is known as __________. a. renal autoregulation b. the myogenic mechanism c. tubuloglomerular feedback d. sympathetic control e. the renin-angiotensin-aldosterone mechanism 2) […]

1) red bone marrow does not contain __________. a. myeloid tissue b. yellow bone marrow c. hemopoietic tissue d. white blood cells e. red blood cells 2) the abdominopelvic cavity contains a moist serous membrane called the __________. a. peritoneum […]

1) carbohydrates function as structural components in all of the following except __________. a. glycolipids b. glycoproteins c. nucleic acids d. amino acids e. atp 2) one group of proteolytic enzymes secreted by natural killer (nk) cells is __________. a. […]

1) a lesion in which structure would cause a person to have an erratic waking/sleeping cycle? a. satiety center b. mammillary nucleus c. suprachiasmatic nucleus d. pituitary gland e. medial geniculate nucleus 2) the connective tissue that surrounds a fascicle […]

1) when it is cold, the __________ contracts and draws the testes closer to the body to keep them warm. a. cremaster muscle b. pampiniform plexus c. corpus spongiosum d. perineum e. corpus cavernosum 2) the __________ system exchanges oxygen […]

1) which one of these muscles helps to open the mouth (depress the mandible)? a. zygomaticus major b. digastric c. sternohyoid d. depressor anguli oris e. hyoglossus 2) only autosomal trisomies involving chromosomes 13, 18, and 21 are survivable. why […]

1) the acetabulum articulates with the __________. a. humerus b. femur c. patella d. tibia e. hip bone 2) an example of chemical digestion is the break down of__________ into __________. a. proteins; nucleotides b. amino acids; proteins c. polysaccharides; […]

1) the allele for cleft chin (c) is dominant to the allele for uncleft chin (c). a male and female who are both heterozygous for cleft chin have a child. what is the chance that this child will have an […]

1) which of the following are primary sex organs? a. ova b. uterine tubes c. breasts d. ovaries e. scent glands 2) what is the path of blood from the heart, to the left zygomaticus muscles, and back to the […]

1) a receptor protein in the plasma membrane will not bind to just any chemical in the extracellular fluid, but only to certain ones. this property is called _________. a. selectivity b. specificity c. efficacy d. saturation e. fidelity 2) […]

1) _________________ are the simplest body structures considered alive. a. organ systems b. organs c. cells d. organelles e. molecules 2) the concentration of a solution may be expressed by all of the following except _________. a. weight per volume […]

1) pain, heat, and cold are detected by __________. a. tactile (meissner) discs b. tactile corpuscles c. lamellar (pacinian) corpuscles d. free nerve endings e. end (krause) bulbs 2) preganglionic fibers of the autonomic efferent pathway are _________ and secrete […]

1) which two substances are most useful for determining a patient’s glomerular filtration rate? a. insulin and glucose b. inulin and creatinine c. sodium and water d. albumin and inulin e. insulin and urea 2) which of the following is […]

1) in which structure is the arbor vitae found? a. left cerebral hemisphere b. tegmentum in the midbrain c. cerebellum d. reticular formation e. diencephalon 2) where do most second-order somesthetic neurons synapse with third-order neurons? a. midbrain b. thalamus […]

1) a thin, stained slice of tissue mounted on a microscope is called a __________. a. fixative b. histological section c. spread d. stain e. smear 2) which of the following does not contain ciliated cells? a. nasal cavity b. […]

1) which of the following forces does not help lymph to flow? a. rhythmic contractions of lymphatic vessels b. the thoracic pump c. the skeletal muscle pump d. the lymphatic node pump e. arterial pulsations squeezing lymphatic vessels 2) during […]

1) some antidepressant drugs act by inhibiting monoamine oxidase (mao). what is the function of this enzyme? a. it binds to chloride gates. b. it breaks down monoamines. c. it blocks sodium channels. d. it converts atp to cyclic amp. […]

1) the study of normal body structures is called __________. a. microscopy b. pathology c. physiology d. anatomy e. biology 2) eyes and ears are innervated by _________ fibers. a. white b. visceral c. somatic d. special e. general Answer: […]

1) mitosis in the __________ accounts for growth of the nail. a. nail plate b. nail fold c. eponychium d. hyponychium e. nail matrix 2) which of the following organs has both endocrine and exocrine functions? a. the adrenal gland […]

1) the membrane that lines the lumenal surfaces of the digestive, respiratory, urinary, and reproductive tracts consists of _________. a.simple squamous epithelium and dense irregular connective tissue b.areolar and dense irregular connective tissue c.epithelium and lamina propria d.areolar tissue and […]

1) at what stage does a developing sperm cell begin to grow a tail? a. spermatozoon b. spermatid c. primary spermatocyte d. secondary spermatocyte e. spermatogonium 2) which of the following is not a factor that determines the range of […]

1) the urinary bladder is located in the __________ region. a. epigastric b. umbilical c. hypogastric d. inguinal e. hypochondriac 2) which of the following structures is composed of a theca folliculi, granulosa cells, a zona pellucida, and a secondary […]

1) the serum used for emergency treatment of snakebites stimulates __________ immunity. a. artificial passive b. artificial active c. natural passive d. natural active e. artificial specific 2) what is the principal cation of the ecf? a. ca2+ b. cl- […]

1) which law states that the total pressure of a gas mixture is equal to the sum of the partial pressures of its individual gases? a. boyle’s b. valsalva’s c. dalton’s d. charles’s e. henry’s 2) which of the following […]

1) where does the highest rate of tissue protein turnover occur? a. the intestinal mucosa b. the gastric mucosa c. the hepatic sinusoids d. the splenic sinusoids e. the pancreatic islets 2) during climacteric, women secrete __________. a.less estrogen and […]

1) the hormone called _________ plays an important role in synchronizing physiological function with the cycle of daylight and darkness. a. calcitonin b. melanin c. melatonin d. hepcidin e. inhibin 2) __________________ exhibits a lot of apparently empty space, and […]

1) a skydiver’s parachute fails to deploy. after some struggle, his reserve chute deploys in time to save his life. however, his landing is harder than normal and he feels his knee slightly hyperextend. he shakes it off and goes […]

1) the anterior pitiurary is __________ than the posterior pituitary and has __________ connection to the hypothalamus. a. smaller; no nervous b. larger; a nervous c. larger; no nervous d. smaller; a nervous 2) hypercalcemia means _________. a. elevated calcium […]

1) achondroplastic dwarfism is a hereditary condition, in which the long bones of the limbs fail to elongate normally because of reduced hyperplasia and hypertrophy of cartilage in the __________. a. primary ossification center b. secondary ossification center c. primary […]

1) which of the following is not a characteristic of diabetes mellitus?4-25-2013 a. hypoglycemia b. polyuria c. polyphagia d. polydipsia e. glucosuria 2) which of the following is not a feature of cardiac muscle? a. they depend almost exclusively on […]

1) the plasma membrane is permeable to _________, but impermeable to ___________. a. nutrients; wastes b. proteins; nutrients c. phosphates; wastes d. nutrients; proteins e. wastes; nutrients 2) which of the following fractures would be the least likely to cause […]

1) what would you find in the marrow cavity of the diaphysis of an adult humerus (arm bone)? a. periosteum b. hemopoietic tissue c. red bone marrow d. yellow bone marrow e. compact bone 2) which of the following does […]

1) the __________ completely encloses the embryo and provides it witha stable environment. a. yolk sac b. amnion c. chorion d. chorionic villus e. allantois 2) the vibration of an ear drum is an example of __________ energy. a. kinetic […]

1) proteins perform all of the following functions except __________. a.catalyze metabolic reactions b.give structural strength to cells and tissues c.produce muscular and other forms of movement d.regulate transport of solutes into and out of cells e.store hereditary information 2) […]

1) the flat-shaped cells found covering the skin are _________ in shape. a. cuboidal b. columnar c. cylindrical d. squamous e. spherical 2) which of these is most likely to result from contact between contaminated fingers and the nasal mucosa? […]

1) blood vessels in the __________ provide a hair with its sole source of nutrition. a. bulb b. root c. shaft d. dermal papilla e. medulla 2) which body region is controlled by the largest area of the motor cortex? […]

1) which of the following has the largest mitochondria? a. slow oxidative fibers b. fast glycolytic fibers c. cardiac muscle d. smooth muscle e. intermediate fibers 2) which of the following is a disaccharide? a.galactose b.lactose c.glucose d.fructose e.amylose Answer: […]

1) the aponeurosis of the external oblique forms the ________ at its inferior margin. a. linea alba b. rectus sheath c. linea semilunaris d. medial retinaculum e. inguinal ligament 2) suppose you cup your hands to hold some water. to […]

1) after entering the right atrium, the furthest a red blood cell can travel is the _________. a. right ventricle b. pulmonary trunk c. superior vena cava d. ascending aorta e. left atrium 2) the middle primary germ layer is […]