Test A

5(x-2)2squared = 125 Solve for x, which solution sets is correct? A) (-3, -7) B) (-3, 7) C) (3, -7) D) (3, 7)

-3, 7 *1st simplify the problem down than try and fit the answers into the simplified version to see which one is correct..... 5(x-2)sq. = 125 (x-2)sq. = 125/5 (x-2)sq. = 25 (-3 -2)sq. = 25 (-3 + 2)sq. = 25 (-5)sq. = 25 25 = 25 (7 - 2)sq. = 25 (5)sq. = 25 25 = 25

You have been asked to order new carpet for the hallway and waiting room of your office. The hallway is 6 ft wide by 67 ft long. The waiting room is 20 ft. wide by 35 ft long, with a semicircular area by the door measuring 10 ft in diameter. How much carpet will need to be ordered (round to nearest foot)? A) 1,102 ft B) 1,181 ft. C) 1,140 ft. D) 1,142 ft.

1,142 ft. *1st find the area of each the hallway, waiting room & semicircle. Hall & Waiting A = L x W, Semi A = 3.14r^2/2 Hall: 6 x 67 = 402 ft. Waiting room: 20 x 35 = 700 ft. semicircle: (Diameter is 10 so 1/2 that is 5 for radius) 3.14 x 5^2 / 2 3.14 x 25 divided by 2 78.5 divided by 2 = 39.25 Total of carpet needed is by adding up all areas: 402 + 700 + 39.25 = 1,141.25 ft.

Nancy ran a distance of 5 km in 30 minutes. What is her speed in meters (m) per hour (h)? A) 10,000 m/h B) 6,000 m/h C) 300,000 m/h D) 150 m/h

10,000 m/h *Determine rate per hour 1st. (there is 60min in an hour, so 30min + 30min = 1hour or 30x2=60) 5 km in 30 min (so x by 2) 5 x 2 = 10 km per hour (now find out Meters per hr) 1,000 km = 1 meter 10km x 1,000km = 10,000 meters

Estimate the volume of a rectangular box that has a height of 22.1 cm, a length of 98 cm, and a width of 54 cm. The volume of a rectangular box can be calculated by multiplying length x width x height. A. 180,000 cm^3 B. 90,000 cm^3 C. 117,000 cm^3 D. 100,00 cm^3

100,000 cm^3 *The word Estimate tells you to round up to whole # 1st. *2nd find volume = L x W x H Length 98 = 100 Height 22.1 = 20 Width 54 = 50 100 x 20 x 50 = 100,000

how many organ systems are in the human body? 11 22 31 4

11

Max has five lawns to mow on Saturday. The 1st lawn is 20 x 30. The 2nd is 200 x 45. The 3rd is 50 x 50. The 4th is 90 x 60 and the 5th is 150 x 95 feet. He can mow 240 ft. every minute. Approximately how long will it take him to mow all 5 lawns? A) 2 hr & 12 min B) 2 hr & 20 min C) 1 hr & 9 min D) 6 hr & 58 min

2 hr & 12 min * Total area divided by are in minutes. (20 x 30)^2 + (200 x 45)^2 + (50 x 50)^2 + (90 x 60)^2 + (150 x 95)^2 divide by 240 = x 600 + 9000 + 2500 + 5400 + 14250 / 240 = x 31750 divided by 240 = 132.29 132.29 divided by 60(min) = 2.2048333 (you have to think of it as 60 x 2 is 120 min. subtract 132 from 120 and that leaves 12min)

In a certain city, one block = 0.25 miles. The city's HS is 4 blocks east of a grocery store. The city's library is 6 blocks east of the grocery store. A student walks to the library after school and then walks to the grocery store a few hours later. Which is the # of miles this student has walked? A) 1.5 miles B) 2 miles C) 2.5 miles D) 4 miles

2 miles * Grocery------(4blocks)HS------(2blocks)Library 1st walks 2 blocks east to library 2nd walks 6 blocks west to grocery store For a total of 8 blocks. 8 x 0.25 = 2

The distance between A & E is 10km. The distance between B & E as well as A &D is 8km If the distance between A & C is 4.5km what is the distance between B & C? ---A---B------C--------D---E---- A) 2.0km B) 2.5km C) 3.5km D) 6.0km

2.5km *AE = 10 CE = 8 AD = 8 AC = 4.5 AE - BE = AB 10 - 8 = 2 AC - AB = BC 4.5 - 2 = 2.5

The length of an envelope is 21 cm rounded to the nearest whole cm. which is the smallest possible real length of the envelope? A) 20.5 cm B) 20.49 cm C) 21.44 cm D) 20.6 cm

20.5 cm *the key is rounded to the nearest WHOLE and smallest possible 20.5 = 21 20.49 = 20 21.44 = 21 (21 yes but 21.44 is largest) 20.6 = 21 (21 yes but not smaller than 20.5)

Which of the following options represents the chromosomal composition of a normal human zygote? A. 46 chromosomes B. 23 chromosomes C. 69 chromosomes D. 92 chromosomes

46 chromosomes

The distance from Chicago, IL to St. Louis, MO is 300 miles. What is the distance in meters (m) between the two cities? (note: 1mile = 1.6 km) A) 187.5m B) 480m C) 187,500m D) 480,000m

480,000 m *1mile = 1.6kilometers & 1,000km = 1meter 300(ml) = 1(ml) x 1.6km x = 480km 480 x 1000 = 480,000 meters

5/8 + 1 7/9 + 3 Simplify the expression A) 4 29/72 B) 4 12/17 C) 5 7/18 D) 5 29/72

5 29/72 *For adding mixed #'s 1st find the LCD for the fractions, 2nd add 5/8 + 1 7/9 +3...... becomes 45/72 + 1 56/72 + 3 *line them up to help with adding 1 56/72 3 45/72 4 101/72 ...... now simplify 101/72 (1 29/72) add it to 4 1 (dont add the fraction just whole #) 5 29/72

An atom has 3 protons,4neutrons, and 3 electrons. Which of the following is the atom's mass number? A. 3 B. 9 C. 10 D. 7

7 - the mass of an atom is the sum of protons and neutrons in its nucleus

Which of the following is the correct structure and function of the cell membrane A. a double glycoprotein structure with embedded lipid bodies provides shape and regidity to the cytoplasm B. a double layer of phosphate proteins with lipid channels allows molecules to pass from the inside of the outside of the cell C. nonpolar phosphate heads and polar lipid tails form a bilayer to control the transport of proteins D. A phospholipid bilayer with embedded proteins regulates molecules entering and leaving cytoplasm

A phospholipid bilayer with embedded proteins regulates molecules entering and leaving cytoplasm

Which of the following cell types is responsible for the production of soluble antibodies? A. Cytotoxic T-cells B. Macrophage cell C. B-cells D. Helper cells

B-Cells

He typically avoided the local theater because he found its productions to be BANAL interpretations of over-performed plays. define BANAL.

Bland *avoids bland plays

which of the following substances will dissolve in water A. Ch4 Methane B.CH3OH Methanol C. CCI4 Carbon tetrachloride D. C8H18 Octane

CH3OH Methanol, also known as methyl alcohol

Ca + H2SO 4 Which of the following statements correctly describes the product of the reaction above? A. calcium sulfate B. hydrogen sulfide C. calcium sulfide D. hydrogen sulfate

Calcium sulfate *calcium and sulfuric acid react to produce calcium sulfate and hydrogen gas. Calcium Ca sulfuric acid H2SO4

Which of the following organ system is responsible for transportation nutrients, wastes, and other substances throughout the human body? A. Circulatory B. respiratory C. nervous D. immune

Circulatory = cardiovascular transport nutrients, waste, chem. messenger & immune molecules Respiratory = transporting oxygen from outside into cells (airway, speech, smell) Nervous = nerves and brain work together to collect & process info.; send signals to musculoskeletal system & coordinates movement Immune = protects body from pathogens who enter openings of digestive, urinary & reproductive systems

Which of the following produces progesterone to prepare the uterus for pregnancy A. Endometrium B. Corpus Luteum C. Cervix D. Fallopian Tube

Corpus Luteum

Demyelinization results in which of the following? A. inhibited detection of a stimulus at the dendrites of a nerve cell B. Disrupted propagation of an action potential along the axon of a nerve cell C. inhibited uptake of neurotransmitters at the synapse of a nerve cell D. disrupted ability of the Na+/K+ pumps to depolarize a cell

Disrupted propagation of an action potential along the axon of a nerve cell

Which of the following arteries directly supplies oxygenated blood to the reproductive system ? A. common carotid artery B. Gonadal artery C. femoral artery D. subclavian artery

Gonadal artery

Which of the following is characteristic of the human organism A. autotrophic with a genome stored in DNA B. Heterotrophic with a genome stored in DNA C. heterotrophic with a genome stored in RNA D. autotrophic with a genome stored in RNA

Heterotrophic with a genome stored in DNA Heterotrophic means requiring complex organic compounds of nitrogen and carbon (such as that obtained from plant or animal matter) for metabolic synthesis genome is all genetic material of an organism.

Homozygous is a state of having? Heterozygous is a state of having?

Homozygous is a state of having two dominant alleles (AA) or two recessive alleles (aa) Heterozygous is a state of having one dominant allele and one recessive allele (Aa).

Stores of Subcutaneous fat can be found in which of the following layers of skin? Epidermis Hypodermis Myodermis Dermis

Hypodermis

In a population that is growing, which of the following must be true? A. Immigrants +Birth > Emigrants +Deaths B. Immigrants + Birth = Deaths + Emigrants C. Emigrants + Deaths > Immigrants + Births D. Emigrants + Immigrants = Births + Deaths

Immigrants +Birth > Emigrants +Deaths *If Immigrants (people joining ) and births are greater than emigration (people leaving) and deaths - than population will grow

Type I diabetes is a disease associated with which of the following hormones? A. estrogen B. testosterone C. thyroxine D. Insulin

Insulin

which of the following cell types provided a waterproofing function for the outer layers of skin A. Melanocytes B. Keratinocytes C. Merkel cells D. Langerhans cells

Keratincytes

The Nephridium worms have a function most similar to which of the following organs in humans? A. Liver B. Spleen C. Lymph nodes D. Kidney

Kidney

Which of the following organs is the site of blood filtration A. Kidney B. Heart C. Lung D. Brain

Kidney- the kidneys filter blood

Which of these terms related to the respiratory system refers to the "voice box" for sound production? A. pharynx B. trachea C. uvula D. Larynx

Larynx

A person is suddenly frightened, which of the following reactions occur next? A. Liver cells release glucose into the blood stream B. Blood vessels supplying skeletal muscles constrict C. Blood vessels supplying the intestines dilate D. liver cells absorb glucose from the blood stream

Liver cells release glucose into the blood stream

Which of the following structures within a human cell is responsible for recycling the materials no longer functional or needed withing the cell A. Ribosome B. Mitochondrion C. Nucleolus D. Lysosome

Lysosome

The bands in muscle sarcomere are formed by actin in which of the following proteins A. Myosin B. Deynein C. Keratin D. Laminin

Myosin - thick protein

Which one is spelled correctly? A) occasionally B) ocasionally C) occassionally D) occasionaly

Occasionally *when adding -ly in a -al, keep the original "l" and add "ly". *when forming an adverb, -ly is added to an adjective without changing the original spelling unless the root word ends in "e" or "y".

Which of the following is an example of positive feedback? A. Oxytocin causes an increase in uterine muscle contractions, ultimately causing the posterior pituitary to release more oxytocin B. an increase in blood glucose level causes the release o insulin, which results in the lowering of glucose levels C. a drop in body temp causes the hypothalamus to activate warming mechanisms D. an increase in blood osmolarity causes the release of ADH, which causes urine to become more concentrated

Oxytocin causes an increase in uterine muscle contractions, ultimately causing the posterior pituitary to release more oxytocin

Which of the following glands is the primary producer of insulin Liver Pancreas Gallbladder Spleen

Pancreas

Which of the following are sesamoid bone A. Phalanges B. Patellae C. Scapulae D. Metatarsals

Patellae- also consider a short bone (The sesamoid bones are tiny little bones found within tendons that are located in areas of the body where the tendon passes over a joint.)

Trachea, lungs, Alveoli, and Diaphragm belong to what body system Respiratory system

Respiratory system

Which of the following is classified as a flat bone A. Tarsal B. Vertebrae C. Humerus D. Rib

Rib

Kidneys remove which of the following from the blood? A. platelets B. Salts C. oxygen D. fat

Salts

Which of the following glands primarily supplies hair shafts and skin with oily secretions A. Eccrine B. Sebaceous C. Apocrine D. Ceruminous

Sebaceous

Bones, cartilage, and ligaments are apart of what body system? Muscle system Skeletal system Nervous system Endocrine system

Skeletal system

Which of the following terms describes a sample composed of particles condensed into a small space and having vibrational, but not translational, motion A. liquid B. gas C. plasma D. Solid

Solid

In which of the following areas does protein breakdown begin in the human body? A. Mouth B. Stomach C. small intestine D. large intestine

Stomach

In Mendelian inheritance, the dominant allele is for the tall plant and the recessive allele is for the short plant. which of the following statements is correct in terms of genotype and phenotype? A.TT and Tt are both genotypes for the tall plant phenotype B. TT and Tt are both genotypes for the homozygous recessive phenotype C. TT is the dominant phenotype and tall plants is the resulting genotype D. TT and Tt are both genotypes for the tall plant phenotype

TT and Tt are both genotypes for the tall plant phenotype *the T allele is dominant and encodes the tall plant phenotype, and it requires only one dominant allele to express the dominant trait. *Phenotype = expression of alleles (eye color, height) *Genotype = 2 alleles for particular trait PP (homozygous dominant), Pp (heterozygous), and pp (homozygous recessive)

In a well-controlled experiment , researchers show that a common topical antibiotic called chloramphenicol halts a deadly fungal growth on the skin of amphibians. Which of the following is the best inference for how the antibiotic works to limit a fungal A. The antibiotic causes a mutation in the skin tissue that makes ti resistant to the fungus. B. The antibiotic kills a bacterial partner that essential in the fungal infection C. The antibiotic acts as a physical barrier that interferes with fungal growth D. The antibiotic activates white blood cell production in amphibians

The antibiotic kills a bacterial partner that essential in the fungal infection

The use of an electron microscope would most benefit the study of A. The structure of cellular organelles B. the structure of atoms C. the structure of skeletal joints D. chemical bonds in molecules

The structure of cellular organelles

Which of the following sentences in a research paper should include a citation? A) This paper summarizes key aspects of supplements to support the immune system. B) Numerous studies have been conducted to find ways to improve the immune system. C) Several clinics report cases of improved immune system responses. D) These results are conclusive of an improved immune system, according to Dr. Smith's paper

These results are conclusive of an improved immune system, according to Dr. Smith's paper *refers to a specific point from Dr. Smith research

what can not exist in RNA Adenine Thymine Uracil Guanine

Thymine

in which part of the body does T-cells mature? A. Bone Marrow B. Adrenal glands C. Thyroid D. Thymus

Thymus *thymus is the location of maturation of T-cells.

Which one is the misspelled word? A) Ancient B) Viewed C) Truely D) Historic

Truly * an exception to the rule to drop the "e" when adding a suffix beginning with a vowel (a, e, i, o, u), BUT not before a suffix beginning with a consonant.

Which of the following connects the kidneys to the bladder? A. Capillaries B. Urethras C. Arteries D. Ureters

Ureters

This equation is used to determine the length of crutches in inches (L) required for a person of a given height in inches (K). Which is true? A) each 1/3 inch of height adds 1 inch to the crutch length. B) each 1 inch of height adds 1/3 to the crutch length. C) each 2 inches of height adds 3 inches to the crutch length D) each 3 inches of height adds 2 inches to the crutch length

each 3 inches of height adds 2 inches to the crutch length * 3 inch of height adds 2 inches to crutch (2/3 x 3) = 2 2/3 x 3/1 = 2 6/3 = 2 2 = 2

What is the name of the structure that diverts food into the esophagus and prevents food from entering the airway (lungs)? Uvula soft palate tonsils epiglottis

epiglottis

On an imaginary planet called Alpha Vega, purple eyes (F) are dominant over pink eyes (f). Which of the following combinations will produce only offspring with pink eyes ? A, ff x ff B. Ff x ff C. Ff x Ff D. FF x ff

ff x ff

Which of the following is the function of the lymph nodes in mammals? A. pump oxygen into tissue spaces B. store extra glucose for emergencies C. synthesize hemoglobin for erythorcytes D. filter debris from intracellular spaces

filter debris from intracellular spaces

The chef compiled a list that included these ________ butter, onions, peppers, and various spices. Which option correctly completes the sentence above? A) groceries: B) groceries, C) groceries; D) groceries

groceries: * when making a LIST use colon

Accidents do not just______ are usually caused by lack of attention. A) happen they B) happen, they C) happen; they D) happen: they

happen; they * both are independent clauses & require some form of separation. There is NO coordinating conjunction (and, but, or yet) so separate two clauses by semicolon

The shape of villi or microvilli facilitates which of the following? A. increasing surface area for absorption B. pushing food along the intestine via ciliary motion of villi C. creating barriers to food movement to increase digestion time D. decreasing surface area for absorption

increasing surface area for absorption

A doctor or a nurse _________ always on duty. A) are B) is C) were D) seem

is * the word Or makes it singular and "is" is singular

Which of the following connect 2 bones together? Tendons ligaments marrow muscle

ligaments

what group of major parts and organs make up the immune system? lymphatic system ,spleen, tonsils, thymus, and bone marrow

lymphatic system, spleen, tonsils, thymus, and bone marrow

which of the following classes of bio-molecules can influence the rate of specific chemical reaction within a living cell proteins

proteins

which of the following chemical compounds prevents the lungs from collapsing A. Surfactant B. mucus C. enzymes D. buffers

surfactant - liquid

A defining characteristic of a scientific hypothesis is that it is A. testable B. unexpected C. correct D. predictable

testable

Unlike skeletal muscles, cardiac muscle is highly resistant to lactate-mediated fatigue because cardiac muscle A. uses aerobic respiration in mitochondria for energy B. operates with electrical energy supplied by the SA node C. primarily metabolizes glucose using the fermentation pathway D. does not need oxygen for the production of energy

uses aerobic respiration in mitochondria for energy