Download PCAT Study Guide Biology Practice Test Questions 2023 and more Exams Nursing in PDF only on Docsity!
PRACTICE TEST QUESTIONS 2023
which cells are used by plants to absorb copper and other minerals? - correct answer ✅epidermis cells (root hairs absorb minerals) the small finger-like projections which cover the surface of the intestine are - correct answer ✅villi (increases surface area) if the characteristics of red hair, blue eyes, and freckles are consistently inherited together, it can can be said that - correct answer ✅the genes can be found on the same chromosones this structure is a bacteria that causes (looks like cheetos) - correct answer ✅cholera-vibrio (a curved rod) stability in an allele is caused by - correct answer ✅selection pressure which eliminates extremes of traits which is not filtered i the kidneys? - correct answer ✅hemoglobin the eustachian canal functions to - correct answer ✅equilize air pressure
PRACTICE TEST QUESTIONS 2023
most enzymes have a pH optimum in the range of - correct answer ✅6 to 7 (closer to basic) the disease scurvy is caused by deficiency in which vitamin? - correct answer ✅vitamin C vitamin D causes rickets vitamin B12 causes anemia vitamin A causes eye problems in which tissues would the golgi apparatus be most abundant? - correct answer ✅the liver-most abundant in tissues that carry out secretion the site of glycogenesis is the - correct answer ✅liver (glyogen is both made and broken down here) in the united states, 1 in 250 people suffer from Hecochromatosis, a common hereditary disease. he disease results from a mutation in HFe gene and results in excess accumulation of iron in the body. what is the common form of treatment - correct answer ✅blood letting-removal of blood and extra iron in the body
PRACTICE TEST QUESTIONS 2023
_____tissues have closely linked cells and one free surface - correct answer ✅epithelial a scientist put in a test tube of nucleotides UAUA to form UAUAUAUAUAUAUAUAUAUA and optained a test tube full of the amino acids sequence Ile-Try-Ile-Try. from these results the scientist can conclude - correct answer ✅UAU may code for either Ile or Tyr a virus always contains - correct answer ✅proteins and nucleic acid which of the following is one of the main means of preventing fungus infections? - correct answer ✅sebaceous secretions on skin- fungus injections mostly occur on the skin rough ER looks rough because - correct answer ✅it has ribosomes on its surface natural but active immunity is acquired when - correct answer ✅a person has and recovers from a disease
PRACTICE TEST QUESTIONS 2023
receiving antibodies from a horse or antigen is artificial antibodies transferred from other to child is natural but passive during embryogenesis, mesoderm gives rise to - correct answer ✅muscles and reproductive organs certain people have the ability to consciously reduce their heart rate. this involves control of their - correct answer ✅parasympathetic nervous system the release of a substance for use by the organism producing it. this general definition is called - correct answer ✅secretion during the evolution of the vertebrate brain, the changes seen in the various parts are - correct answer ✅midbrain, hindbrain (small), and forebrain (large) which of these genetic disorders exhibits X-linked inheritance? - correct answer ✅hemophilia CO2 crosses the surface of the air sacs of the lungs by - correct answer ✅diffusion (so does oxygen)
PRACTICE TEST QUESTIONS 2023
the primary site for digestion and absorption of food is the - correct answer ✅small intestine what disease is associated with high levels of cortisol? - correct answer ✅cushing's disease-a tumor in the pituitary gland causes the production of too much ACTH, which in turn causes the production of too much stress hormone cortisol. addison diseases leads to low levels of cortisol due to autoimmune disorder what does not have a nucleus - correct answer ✅bacteria (they are prokaryotes) if the normal number of chromosomes in a species is 40, how many chromosomes will be present in a sperm cell? - correct answer ✅20-sperm cells are haploid while normal chromosomes are diploid the largest lympoid organ is/are the - correct answer ✅spleen as one goes from low trophic levels to higher trophic levels - correct answer ✅the number of organisms a each level decreases
PRACTICE TEST QUESTIONS 2023
a cell wall composed of cellulose is a characteristic of - correct answer ✅plants which is composed only of single-celled organsims? - correct answer ✅protozoans the function of the structure above is (looks like a stem filled with many fibers) - correct answer ✅movement-muscle fibers insertions and deletions are both examples of types of - correct answer ✅mutation the watson/crick model describes the - correct answer ✅structure of DNA which of the following is a protozoan? - correct answer ✅euglena-photosynthetic protozoan removal of the thymus would effect - correct answer ✅immune repsonse-it is the site of T cell maturation
PRACTICE TEST QUESTIONS 2023
in bacteria, the electron transport chain takes place in - correct answer ✅the cell membrane-bacteria do not have mitochondria in the Citric Acid Cycle - correct answer ✅two 3-carbon molecules (pyruvate) are broken down into six CO2 molecules what a cell becomes during embryogenesis is determined by - correct answer ✅genetic programming and the influence of nearby cells after the blood leaves the left ventricle, what part of the body does it supply? - correct answer ✅the aorta and the systemic circuit what is not true about viruses - correct answer ✅their ribosomes are smaller then those of bacteria viruses do not ribosomes or organelles of any kind in the Kreb's cycle - correct answer ✅two 3- carbon molecules are broken down into 6 CO2 molecules
PRACTICE TEST QUESTIONS 2023
the system in the body which secrets a fluid that effects a target organ is the - correct answer ✅endocrine system-produces hormones which have effects on all different areas of the body a ____ is a small circular piece of DNA which has a limited number of genes and replicates independently of the chromosome - correct answer ✅plasmid-can transfer it to other bacteria in conjugation movement of K+ and Na+ ions across cell membrane s by the sodium-potassium pump is a type of - correct answer ✅active transport what is it called when chromosomes fail to separate during cell division - correct answer ✅polyploidy-too many chromosomes the developing fetus receives nutrients and all that is needs through the - correct answer ✅placenta a child with anencephaly is deficient in what? - correct answer ✅the head anaecephaly-lack of flat bones of the skull and most of the brain. chephalo=head
PRACTICE TEST QUESTIONS 2023
maintain and help form the placenta, after the 16th week, the placenta makes the hormones needed to sustain itself and HcG levels drop which of these genetics exhibits X-linked nheritance - correct answer ✅red-green color blindless-more common in males what regulates blood pressure? - correct answer ✅aldosterone the function of lysosomes is - correct answer ✅intracellular digestion the observable traits of an organism are known as its - correct answer ✅phenotype the central nervous system is made up of the - correct answer ✅brain and spinal cord an example of symbiosis is - correct answer ✅a parasite inside an organism symbiosis-two organisms living together in a relationship
PRACTICE TEST QUESTIONS 2023
which organelle is commonly referred to as the engine of oxidative metabolism? - correct answer ✅mitochondria when mating persons are blood type genetics of AA ad AB, the chance for an offspring with type A blood is - correct answer ✅50% which is the first area where peristalsis can occur? - correct answer ✅esophagus- the coordinated contraction of smooth muscle that moves material through the digestive tract takes places in the esophagus and again in the intestines. the effect of cocaine on nerve cells is to - correct answer ✅block reabsorption of norepinephrine and other neurotransmitters at the synapse (giving a rush of pleasure) the highest oxygen levels would be found in the - correct answer ✅pulmonary vein-which returns blood from the lungs to the heart the taxinomical category that the two species in the figure share is
PRACTICE TEST QUESTIONS 2023
what engulfs eukaryotic cells? - correct answer ✅monocytes-are phagocytic which engulfs eukaryotes such as yeast or prokaryotes such as bacteria the bacterium Clostridium is - correct answer ✅anaerobic-causes diseases such as tetanus and botulism the enzyme that catalyzes glucose into glucose 6-phosphate is - correct answer ✅hexokinase-kinase enzymes transfer phosphate groups to substrates viruses us this to attach to host cells - correct answer ✅protein-in their capsid or spike protieins in their envelope to attach to host cells which structure is not part of the digestive tract? - correct answer ✅lanyx-voice box, marks the division between the upper and lower respiratory tract one of the events seen during an inflammation reaction is - correct answer ✅the diameter of the blood vessels in the area increases leading to more blood flow to the site (vasodilation)
PRACTICE TEST QUESTIONS 2023
mycorrhizae have the same function as - correct answer ✅root hairs-increase surface area for absorption which gland produces melatonin - correct answer ✅pineal gland what is not true of lichens? - correct answer ✅the fungal partner can live independently of the phtosynthetic partner (algae or cyanobacteria) acid rain has lowered the pH of the groundwater in an area to 4.0. people should not drink this water because - correct answer ✅it can have higher levels of dangerous metals in it the presence or absence of this organism can be used to measure the quality of a habitat or environment - correct answer ✅indicator species-exp:lichens indicate air quality or pollution a person missing their gut bacteria or microbiota would be deficient in which vitamins? - correct answer ✅b12,k,B1 -various b and K vitamins are produced by bacteria in the intestine
PRACTICE TEST QUESTIONS 2023
the pulmonary circuit supplies blood to the - correct answer ✅kidney the hypothalamus - correct answer ✅produces the reproductive hormone oxytocin and controls body temperature. when mating a female hemophilia carrier to a normal male,the chance for offspring with hemophilia is - correct answer ✅25% which is not a part of white blood cells? - correct answer ✅erthrocytes-part of RBC when mating persons with type A and type B blood types, each of whom is homozygous, the chances for an offspring with type O is - correct answer ✅0% missense mutations affect - correct answer ✅a single amino acid-a single nucleotide is altered which is a skeletal muscle protein? - correct answer ✅actin-along with myosin and tropomyosin
PRACTICE TEST QUESTIONS 2023
the probability that a mother with type AB and a father with type O will have a child with type A blood is - correct answer ✅50% if you remove fatty acid from triglyceride, what do you have left - correct answer ✅glycerol-triglycerides are made of glycerol and fatty acids what disease can you get from uncooked pork? - correct answer ✅trichinella- ringworm this type of transport takes place against a concentration gradient - correct answer ✅active transport both parents have type B blood and are heterozygous. if they have children with type O blood, what percent of their offpspring will be type O - correct answer ✅25% a virus could be most easily transmitted between which two organisms? - correct answer ✅bear and seal since they are closely related
