Teas 7 Science Practice Qs

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254 Terms

1
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Which of the following is the process by what DNA is copied into RNA

transcription

2
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carbon has an atomic number of 6. what is true about isotope c-12

c-12 possesses 6 neutrons and 6protons in its. nucleus

3
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1. Which of the following best describes adaptive immunity?
o The body's barrier defences, such as mucous membranes and secretions
o The initiation of internal defences, such as phagocytes and natural killer cells
o The initiation of the inflammatory response
A response to specific traits of specific pathogens.

a respone to specific traits of specific pathogens

4
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1. Which of the following describes why water has a concave, or downward-curving meniscus when poured in a glass beaker?
o Glass has a higher density than water
o Water has a higher density than glass
o The adhesive forces with the glass are greater than the cohesive forces
o The cohesive forces with the glass are greater than the adhesive forces.

the adhesive forces with the glass are greater than the cohesive forces

5
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1. The following diagram summaries the carbonic acid-bicarbonate ion buffer system of the blood CO2+H2OH2CO3 HCO3- +H+
Which of the following equations shows the reaction that takes place when there are excessive H+ ions?
o H2CO3 CO2 + H2O
o HCO3- + H+ H2CO3
o CO2 + H2O H2CO3
o H2CO3 HCO3- +H+

HC03- + H+ > H2CO3

6
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a student investigating the importance of wavelengths above and below the visible spectrum for photosynthesis sets up an experiment as follows over a 2 month period, all the illumination at. 1 meter distance from plants grown with the same sol and watering conditions
at the end of the experiment she finds that the IR treated plants are scorched , the UV treated plants have titled but the white light created plants are growing normally

wavelength of lights the only variable that has been changed between groups

7
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1. Which of the following is a property of water?
o Water is made up of one molecule of hydrogen and two molecules of oxygen
o Water dissolves polar iconic compounds
o Water requires less heat than ethanol to raise its temperature
o Solid water is more dense than liquid water

Water dissolves polar ionic compounds

8
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1. Lifelong protection after exposure to a virus such as chickenpox is due to which of the following types of immunity?
o Nonspecific
o Innate
o Transplantation
o Active

active

9
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1. Which of the following is an example of active transport?
o Aquaporins in kidney cells that help concentrate urine
o Movement of substance from an area of high concentration to an area of low concentration
o Movement of a sodium and potassium across the cell membrane against their CONCENTRATION GRADIENT.
o Loss of water from a cell in a hypertonic solution

movement of a sodam and potassium across the cell membrane against there concentration gradient

10
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1. Which of the following body cavities is subdivided into the thoracic and abdominopelvic cavities?
o Dorsal
o Cranial
o Ventral
o Vertebral

ventral

11
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1. Mutations in which of the following types of cells can be inherited by offspring?
o Ovarian
o endocrine
o neural
o muscle

ovarian

12
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1. Which of the following pancreatic secretions digests starch into disaccharides
o Trypsin
o Chymotrypsin
o Amylase
o lipase

amylase

13
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1. A cell is placed in a hypertonic solution. Which of the following describes the resulting osmosis?
o There is no flow of water
o The net flow of water into and out of the cell is zero
o There is a net flow of water out of the cell
o There is a net flow of water into the cell

there is a net flow of water out of the cell

14
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1. When an ionic salt is dissolved in water, the ions CO3 and K+ are formed. Which is the formula for the salt?
o KCO3
o K2CO3
o K3CO2
o K(CO3)2

K2CO3

15
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1. Which of the following elements has the smallest atomic radius
o Ge
o C
o Sn
o Si

C

16
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1. Which of the following structures is a flap of cartilage that prevents the movement of food into the trachea?
o Glottis
o Pharynx
o Epiglottis
o Larynx

epiglottis

17
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1. Which of the following structures is present in both prokaryotic and eukaryotic cells?
o Endoplasmic reticulum
o Chloroplast
o Cell membrane
o Golgi apparatus

cell membrane

18
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1. Which of the following is a part of pulmonary circuit
o Superior vena cava
o Pulmonary vein
o Bronchial artery
o Aorta

pulmonary vein

19
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1. Carbohydrates are composed of which of the following?
o Nucleic acids
o Monosaccharides
o Isoprenoids
o Amino acids

monosaccharides

20
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1. Histones are proteins associated with which of the following?
o Blood
o Sperm cells
o Hair follicles
o DNA

DNA

21
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1. Which of the following layers of skin contains glands and hair follicles
o Hypodermis
o Stratum corneum
o Stratum lucidum
o Dermis

dermis

22
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1. Which of the following describes the function of tendons?
o Tendons attach skeletal muscles to bones
o Tendons attach two bones
o Tendons attach bones to ligaments
o Tendons attach skeletal muscles to ligaments

tendons attach skeletal muscles to bones

23
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1. Which of the following actions does a hydrophilic hormone take to activate a target cell
o The hormone binds to cell-surface receptors of the target cells
o The hormone binds to a cytosolic receptor in the target cell
o The hormone enters a target cell through a transport protein
o The hormone passes through the plasma membrane of the target cell.

the hormone binds to cell surface receptors of the target cells

24
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1. Which of the following is a weakness of a correlational study?
o Cannot be replicated
o Cannot determine causation
o Inability to control independent variables
o Too many variables to control

cannot determine causation

25
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1. During muscle contraction, myosin is directly responsible for which of the following?
o Initiating an action potential along the sarcolemma
o Forming cross bridges with actin molecules
o Binding to troponin molecules
o Releasing calcium from sarcoplasmic reticulum

forming cross bridges with actin molecules

26
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1. Which of the following vessels is responsible for carrying blood from the upper body to the right atrium of the heart?
o Pulmonary veins
o Aorta
o Pulmonary arteries
o Superior vena cava

superior vena cava

27
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1. Which of the following statements correctly describes the change in coat colouring of an arctic for from brown in summer to white in winter?
o The fox's phenotype changes, but the genotype does not
o The fox's genotype changes, but the phenotype does not
o Both the phenotype and genotype of the fox change
o Neither the phenotype nor the genotype of the fox change

the fox phenotype changes but the genotype does not

28
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1. Permanent damage to which of the following types of tissues in the spinal cord will cause paralysis
o Nervous tissue
o Muscle tissue
o Bone tissue
o Connective tissue

nervous tissue

29
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1. The shortening of a sarcomere in skeletal muscle is directly due to the interactional of which of the following?
o Acetylcholine and acetylcholinesterase
o Pepsin and pepsinogen
o Myosin and actin
o Dynein and kinesin

myosin and actin

30
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1. Which of the following terms describes the removal of metabolic waste from the body?
o Secretion
o catabolism
o anabolism
o excretion

exertion

31
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1. Which of the following substances is excreted by sweet glands in response to the breakdown of protein and the formation of ammonia?
o Lysoymes
o Water
o Urea
o Sebum

urea

32
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1. A vasectomy is a procedure in which the vas deferens are cut. Which of the following describes why a vasectomy leads to infertility?
o The vasectomy block the movement of sperm from the prostate gland to the bulbourethral gland
o The vasectomy blocks the movement of sperm from the epididymis into urethra
o The vasectomy blocks the movement of sperm from the ejaculatory duct into the bulbourethral glad
o The vasectomy blocks movement of sperm from a testis into the epididymis

the vasectomy blocks movement of sperm from a testis into epididymis

33
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which of the following occurs during inhalation

the diaphragm moves downwards

34
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1. A scientist predicts that germinating beans will use more oxygen than non-germinating beans. This prediction is referred to as which of the following?
o A conclusion
o An observation
o A hypothesis
o Date collection

a hypothesis

35
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1. Which of the following describes the process by which solid carbon dioxide (dry ice) turns directly into carbon dioxide gas?
o Sublimation
o Deposition
o Condensation
o Evaporation

sublimation

36
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1. An equal mass of which of the following states of matter could completely fill either a 100 ml or 500 ml container?
o Gas
o Solid
o Mixture
o Liquid

gas

37
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1. Which of the following parts of the central nervous system releases chemicals that regulate the pituitary gland?
o Hypothalamus
o Cerebellum
o Thalamus
o Spinal cord

hypothalamus

38
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1. Which of the following allows the AIDS virus, which contains RNA to insert viral DNA into the DNA of a host T-cells after the AIDS virus enters the cells
o Receptor proteins located on the surface of the virus
o Reverse transcriptase, an enzyme encoded by the virus
o The phospholipids found on the envelope of the virus
o The protein that makes up the capsid of the virus

Reverse , transcriptase , an enzyme encoded by the virus

39
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1. If a portion of a strand of DNA bases reads 5'AGCTAGCGT 3'. What would the sequence of bases on the complementary strand read?
o 3'TCGATCGCA5'
o 5'TCGUTCGU3'
o 5'UCGAUCGCA3'
o 3'AGCTAGCGT5'

3TCGATCGCA5

40
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1. Which of the following processes causes most of the carbon dioxide from the blood to move into alveoli
o Active transport using energy
o Diffusion down a concentration gradient
o Conversion to carbon monoxide
o Passive transport using carrier proteins

diffusion down a concentration gradient

41
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what is units is used to indicated mass

MG

42
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1. Which of the following body systems develop from the same origin tissue as lungs?
o Genitourinary system
o Musculoskeletal system
o Neuromuscular system
o Gastrointestinal

gastrotestiinal

43
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1. A researcher is gathering large amounts of data about patients who have a common disease and the effectiveness of various medications in comparison to a placebo. Which of the following types of graphs is the best way for the researcher to present the data?

bar graph

44
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1. A researcher collects high-resolution photographs of the earth taken from outer space at annual intervals for the last decades. This data would be most useful to analyse which of the following?

weather patterns during hurricanes

45
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in the image above identical genes (A nd B)

TetR and KanR

46
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the following tRNA anticodon were lineup in this order

gly-lle-his-leu

47
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1. Which of the following is the appropriate threshold value for mammalian neurons?
o -80 Mv
o -55 mV
o 0 mV
o +35 mV

-55mV

48
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1. In a certain plant, red flowers are dominant over white flowers. A plant heterozygous for red flowers and a plant with white flowers are crossed. Which of the following is the expected proportion of phenotypes in the next generation?
o 2 red, 2 white
o 4 red, 0 white
o 3 red, 1 white
o 1 red, 3 white

2 red , 2 white

49
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1. Which of the following structures is present in both prokarayotic cells?
o Endoplasmic reticulum
o Cell membrane
o Chloroplast
o Golgi apparatus

cell membrane

50
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1. Which of the following can lead to a tsunami?
o Sunspot activity
o Lightning strikes
o Flooding
o Earthquakes

earthquake

51
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1. Which of the following are used to determine a person's DNA sequence?
o Genes
o Blood type
o Hormones
o Enzymes

genes

52
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1. Which of the following organic molecules contain both an amine and carboxyl group?
o Lipids
o Chitin
o Cellulose
o Proteins

proteins

53
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1. Osteoporosis results from which of the following
o A decline in osteoclast activity while osteoblast activity continues at expected levels
o An increase in osteocyte activity while osteoblast activity continues at expected levels
o A decline in osteoblast activity while osteoblast activity continues at expected levels
o An increase in osteocyte while activity continues at expected levels.

a decline in osteoblast activity while osteoclast activity continues at expected levels

54
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1. Which of the following is released by one type of immune cell to directly activate type of immune cell?

o Lysozymes

o Perforin

o Cytokines

o Granzymes

cytokines

55
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1. The measurement indicated by the line across the centre of the cell is best referred to as which of the following?
o Radius
o Diameter
o Area
o Volume

diameter

56
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1. Which of the following properties of water explains its solvent abilities for certain substances?
o High surface tension
o Kinetic energy of liquid water molecules
o Polarity of water molecules

polarity of water molecules

57
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1. Which of the following vessels caries oxygenated blood?
o Pulmonary vein
o Inferior vena cava
o Pulmonary artery
o Superior vena cave

pulmonary vein

58
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1. Which of the following is a mass with the ovary that secretes hormones to maintain the uterine lining during pregnancy?
o Umbilical cord
o Corpus luteum
o Oocyte
o Oviduct

corpus luteum

59
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1. To separate genomic DNA fragments by size, which of these laboratory methods is most useful?
o Spectrophotometry
o Electrophoresis
o Filtration
o Titration

electrophoresis

60
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1. In a plant in which fuzzy leaves (F) are dominant over smooth leaves (f), which of the following crosses will produce only offspring with smooth leaves?
o ff x ff
o Ff x Ff
o FF x FF
o Ff x ff

ffxff

61
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1. Which of the following physiological responses is caused by the release of anti-diuretic hormones?
o Decrease in water reabsorption in the collecting duct
o Decrease in the concentration of calcium in the glomerulus
o Increase in water reabsorption in the collecting duct
o Increase I the concentration of calcium in the glomerulus
2. Which of the following is the atomic number that has 12 protons and 12 neotrons

increase in water reabsorption in the collecting duct

62
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1. Which of the following is the atomic number that has 12 protons and 12 neotrons
o 12
o 24
o 1
o 144

12

63
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1. Which of the following glands synthesizes antidiuretic hormone?
o Pineal gland
o Hypothalamus
o Thymus
o Pancreas

hypothalamus

64
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1. Which of the following is the process in which an ovarian follicle matures and releases a reproductive egg?
o Menstruation
o Ovulation
o Fertilization
o Oogenesis

ovulation

65
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1. Which of the following reasons explains why it is important for new scientific findings to be published?
o Publishing findings will help scientists become more biased
o Other scientists can validate or disapprove the findings
o Scientists will get paid if their findings are published
o This prevents other scientist from performing similar tests.

other science can validate or disapprove the findings

66
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1. Which of the following substances is responsible for donating H+ ions to act as a buffer when blood pH rises?
o Carbon dioxide
o Carbon monoxide
o Oxygen
o Carbonic acid

carbonic acid

67
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1. Which of the following is the structure through which blood exits the glomerulus?
o Proximal tubule
o Distal tubule
o Afferent arteriole
o Efferent arteriole

efferent arteriole

68
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1. Which of the following is the function of totipotent cell?
o Carries electrical impulses
o Fights infectious diseases
o Aids the maturation of sex cells
o Develops into any kind of cell

develops into any kind of cell

69
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1. Which of the following statements best supports the hypothesis that viruses can cause cancer?
o Genes that regulate cell division are found in some viruses
o Viruses and cancer cells both replicate rapidly
o Cancerous and normal cells share genetic sequences
o Cellular DNA has sequences related to viral sequences

genes that regulate cell division are found in some viruses

70
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1. In a phase diagram, which of the following is the term used for a substance held at temperature and pressure where the solid, liquid, and gaseous states of a substance exist simultaneously?
o Critical point
o Triple point
o Critical temperature
o Absolute zero

triple point

71
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1. Which of the following microorganisms lack their own metabolic pathways and can reproduce inside a host cell?
o Protozoa
o Helminths
o Viruses
o Bacteria

viruses

72
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1. If a portion of a strand of DNA bases reads 5' AGCTAGCGT 3', what would the sequence of bases on the complementary stand read?
o 3' AGCTSGCGT 5'
o 5' UCGAUCGCA 3'
o 5' TCGUTCGCU 3'
o 3' TCGATCGCA 5'

o 3' TCGATCGCA 5'

73
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1. In a phase diagram, which of the following is the term used for a substance held at a temperature and pressure the liquid and gaseous phases of a substance merge together into a single phase?
o Critical point
o Triple point
o Critical temperature
o Absolute zero

critical point

74
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1. Which of the following indicates the function of sodium bicarbonate released by the pancreas?
o Sodium bicarbonate stimulates the pyloric sphincter
o Sodium bicarbonate is a protease that digests carbohydrates
o Sodium bicarbonate neutralizes the acidity of chime
o Sodium bicarbonate inhibits peristalsis

o Sodium bicarbonate neutralizes the acidity of chime

75
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1. Which of the following types of cells produce and release antibodies?
o Natural killer cells
o Helper T-cells
o Cytotoxic cells
o Plasma B cells

plasma B cells

76
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1. The cytoskeleton of a cell is comprised of which of the following macromolecules?
o Proteins
o Carbohydrates
o Nuclear acids
o Lipids

proteins

77
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1. Which of the following summarizes a change that takes place as a solid turns into a liquid?
o Intermolecular forces between particles become stronger
o Particles move closer together
o Particles become less ordered
o Particles have a decrease in mobility

particles become less orderd

78
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1. Which of the following are specific immune response (select all that apply)?
o T lymphocyte activation and clonal expansion
o Antibody production
o The formation of memory B cells
o Complement proteins binding to and destroying bacteria
o Endocytosis of a virus by a phagocytic lymphocyte

acd

79
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1. Which of the following is the main function of centrosomes in animal cells?
o Pathogen digestion
o Organelle trafficking
o Microtubule organization
o Cytoplasm

microtubule organization

80
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1. Testosterone is categorized as which of the following types of hormone?
o Aldosterone
o Progestin
o Androgen
o Estrogen

androgen

81
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1. Which of the following are the two major parts of the nervous system?
o Autonomic nervous system and somatic nervous system
o Peripheral nervous system and somatic nervous system
o Autonomic nervous system and central nervous system
o Peripheral nervous system and central nervous system

peripheral nervous system and central nervous system

82
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1. Hiker who found a human body at high altitude in the Italian Alps thought the man had died recently, but tests indicate that he was shot with an arrow more than 5,000 years ago. Which of the following would be the best reason for prolonged preservation of the body?
o The body was frozen in the cold temperature of the Alps shortly after he died and remained frozen until it was found
o The food that the person ate contained toxins that killed the bacteria that would otherwise destroyed the body
o The arrow wound caused blood to flow out of the body, which led enzymes that would break down tissue to be cleared from the body
o The ultraviolet rays at such a high altitude caused all the body's molecules to be preserved.

the body was frozen In the cold temperature of the Alps shortly after he died and remained frozen until it was found

83
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1. Nitrogen gas is an extremely stable because its structure contain which of the following?
o Hydrogen bonds
o Triple covalent bonds
o Resonance bonds
o Ionic bond.

triple covalent bonds

84
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1. Which of the following best describes the result of using a catalyst in a chemical reaction?
o The yield of a product is increased
o A greater amount of heat energy is released by the reaction
o A more desirable product is often formed
o The reaction is completed in a shorter amount of time.

o The reaction is completed in a shorter amount of time.

85
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1. Which of the following substances protect the skin from ultraviolet radiation?
o Kerstin
o Melanin
o Perspiration
o Sebum

melanin

86
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1. In a hypertonic solution, water flows through aquaporins embedded in the plasma membrane of the cell. This type of transport is best known as which of the following?
o Osmosis
o Active transport
o Facilitated diffusion
o Diffusion

osmosis

87
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1. Which of the following is a group that can be measured against the experimental group?
o Control
o Variable
o Manipulated
o Responding

control

88
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1. A myocardial infarction affects which of the following blood vessels of the heart?
o Coronary artery
o Pulmonary
o Vena cava
o Aorta

coronary artery

89
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1. Which of the following processes caused most of the carbon dioxide from the blood to most into alveoli?
o Active transport using energy
o Diffusion down a concertation gradient
o Passive transport using carrier proteins
o Conversion to carbon monoxide

diffusion down a concentration gradient

90
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1. Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?
o Sebum
o Water
o Urea
o Lysozymes

urea

91
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1. Lithium has an atomic number of 3 and a mass of 7, which of the following is the number of protons in a lithium atom
o 12
o 7
o 4
o 3

3

92
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1. Which of the following allows the AIDS virus, which contains RNA to insert viral DNA into the DNA of a host T-cells after the AIDS virus enters the cells?
o Receptor proteins located on the surface of the virus
o Reverse transcriptase, an enzyme encoded by the virus
o The phospholipids found on the envelope of the virus
o The protein that makes up the capsid of the virus

reverse transcriptase , an enzyme encoded by the virus

93
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1. A patient's urine output was 800 ml/hr. following a treatment, the patient's urine output increased to 1200 ml/hr. What is the percentage change in the urine output? (round the answer to the nearest whole number)

50%

94
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which of the following ions binds to the troponin complex, initiating contraction of a muscle
sodium
potassium
calcium
phosphorus

claclium

95
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parametric worms infestation is hypothesized to be damaging to he host, however science have recently discovered that worms infestation relieves the effects of certain uatomune disorders in which of the following ways should the hypothesis be modified

worm infestariors exacerbate the bodys immune reactions

96
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A group of student perform an experiment to test terminal velocity .

terminal velocity is when the force of gravity is equal to air resistance

97
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What is the average length of the Female Urethra?

1-1.5 inches

<p>1-1.5 inches</p>
98
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Which of the following antibody types mediates the body's response to an allergen?

IgE

99
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Where are nutrients absorbed when transported into the bloodstream?

Small intestine

<p>Small intestine</p>
100
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Blood cells are produced by?

red bone marrow