Teas Science

What are the three types of salivary glands and where are they located in the mouth

Parotid located in the roof of the mouth, Sublingual located in the cheeks, and submandibular under the jawbone.

Which of the following substances is excreted by the kidneys to regulate blood pressure

Renin

What is the chemical formula for water

H2O

Which of the following units is used to indicate length

M

Researchers collects data on the number of cars passing through a busy intersection at different times of the day for a month. This data would be most useful to analyze which of the following

traffic patterns during rush hour

What is the largest organ in the human body by surface area

Skin

Which of the following describes the function of ligaments

Ligaments attach two bones

What is the difference between innate and adaptive immunity

Innate immunity is present at birth while adaptive immunity is acquired after exposure to pathogens

Which of the following is responsible for carrying amino acids to ribosomes during protein synthesis

tRNA

What are the steps involved in the scientific method

Observation, hypothesis, prediction, experimentation, analysis, conclusion

What is the difference between a solid and a liquid

Solids have definite shape and volume while liquids have definite volume but no fixed shape

Which part of the respiratory system is responsible for regulating breathing rate and depth

Diaphragm

What is the difference between a monosaccharide and disaccharide

Monosaccharides are simple sugars that cannot be further broken down into simple sugars while disaccharides are composed of two simple sugars

Which of the following is the process by which DNA is copied into RNA

Transcription

What is the role of calcium in muscle contraction?

Calcium is released from the sarcoplasmic reticulum to initiate the sliding of actin and myosin filaments

What is the name of the dome-shaped muscle that plays a key role in breathing

Diaphragm

What is the role of the epididymis in sperm maturation

The epididymis stores and protects sperm cells until ejaculation

Which of the following is a function of the respiratory system

Exchange of gases between the body and the environment

What is the difference between isotonic and isometric muscle contraction

Isotonic contraction produce movement while isometric contractions produce no movement

Which of the following is a characteristic of innate immunity

It provides immediate, non-specific protection

Which of the following is NOT one of the four primary tissue types found in the human body

Exocrine glandular

Which of the following is a type of genetic mutation that involves the insertion or deletion of one or more nucleotides in a DNA sequence

Fameshift mutation

Which of the following describe the process of osmosis

Movement of water molecules from an area of high concentration to an area of low concentration through a selectively permeable membrane

Which of the following is a chemical property of a substance

Reactivity with acid

Which statement best defines the difference between a physical change and a chemical change

Physical change involves the rearrangement of atoms and molecules while Chemical change involves the formation of new substances with different chemical properties

During embryonic development which of the following germ layers forms the nervous system

Ectoderm

What is the primary pigment responsible for photosynthesis in plants

Chlorophyll

Which of the following is an example of an exothermic reaction

Burning wood

Which of the following statements is true regarding vaccines

Vaccines work by exposing the individual to a weakened or inactivated form of the pathogen

What is the function of ribosomes in a cell

To synthesize proteins in the cell

Which of the following is an example of double blind study

Both participants and researchers do not know which group participants are assigned to

What is the name of the hormone that regulates blood sugar levels in the human body

Insulin

What is the primary physiological function of erythrocytes in the human circulatory system

Transportation of oxygen to body tissues

What is the name of the body joint that allows for rotation of the arm at the shoulder

Shoulder joint

What is the name of the valve that separates the left atrium and left ventricle in the heart

Mitral valve

What is the molecular geometry of a molecule of sulphur dioxide (SO2)

Bent

What is the name of the genetic disorder cause by the presence of an extra chromosome 21

Down syndrome

Which of the following types of RNA carries amino acids to the ribosome to the ribsome during protein synthesis

Transfer RNA

What are the five regions of the vertebral column starting from the top and moving downwards

Cervical, thoracic, lumbar, sacral, coccygeal

Which of the following are the two major parts of the nervous system

PNS and CNS

The measurement indicated by the line across the center of the cell is best referring to as which of the following

Diameter

Which of the following ions binds to the troponin complex, initiating contraction of a muscle

Calcium

Which of the following microorganism lack their own metabolic pathways and can only reproduce inside of a host cell

Viruses

Which of the following is the atomic number of an atom that has 12 protons and 12 neutrons

12

Which of the following types of cells produce and release antibodies

Plasma B cells

Which of the following organic molecules contains both and amine and carboxyl group

Proteins

Which of the following allows the AIDS virus which contains RNA, to insert viral DNA into the DNA of a host cell after the AIDS virus enters the cell

Reverse transcriptase, an enzyme encoded by the virus

Which of the following is the main function of centrosomes in animal cells

Microtubule organization

Which of the following is a group that can be measured against the experimental group

Control group

Which of the following is used to determine a persons DNA sequence

Genes

The cytoskeleton of a cell is comprised of which of the following macromolecules

Proteins

Which of the following properties of water explains its solvent abilities for certain substances

Polarity of water molecules

Stimulus 1of1. A group of students performed an experiment to test terminal velocity, which is the greatest speed obtained by a falling object. The students dropped different numbers of coffee filters and measured by the resulting terminal velocity. Which of the following conclusions is supported by the data in the following data table

Heavier objects fall faster than lighter objects

Which of the following indicates the function of sodium bicarbonate secreted by the pancreas

Sodium bicarbonate neutralizes the acidity of chyme

Which of the following results in osteoporosis

A decline in osteoblast activity while osteoclast continues at expected levels

Which of the following is the process in which an ovarian follicle matures and releases a reproductive egg

Ovulation

What is the approximate threshold value for mammalian neurons

-55Mv

Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli

Diffusion down a concentration gradient

A myocardial infarction affects which of the following blood vessels of the heart

Coronary

Which of the following structures is present in both prokaryotic and eukaryotic cells

Cell membrane

In the following data table of an experiment carried out at 4C (39.2F) over four hours. Which of the following options represent the dependent variable

Bag mass change

Which of the following is the structure through which blood exits the glomerulus

Efferent arteriole

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

ff x ff

Which of the following represents the complementary strand of a DNA sequence 3’ TCGATCGCA 5

5’ AGCTAGCGT 3’

Which of the following structures in the female reproductive system secrete hormones to maintain the uterine lining during pregnancy

Corpus Luteum

Which of the following substances is excreted by sweat gland in response to the breakdown of proteins and the formation of ammonia

Urea

Which of the following gland synthesizes antidiuretic hormone

Hypothalamus

In a hypertonic solution, water flows through aquaporins embedded in the plasma membrane in of the cell. This type of transports in best known as which of the following

Osmosis

Why is important for new scientific finding to be published

Other scientist can validate or disprove the findings

Parasitic worm infestation is hypothesized to be damaging to the host. However scientist have recently discovered that worms infestation can relieve the effects of certain autoimmune disorders. IN which of the following ways should the hypothesis be modified given the new findings

Worm infestation reduces the severity of certain autoimmune disorders

Which of the following is correct regarding the pH scale

A substance with a pH of 3 is 10 times more acidic than substance with a pH of 4

Nitrogen gas is an extremely stable molecule because of which of the following

Triple covalent bonds

Which of the following substances protects the skins from ultraviolet radiation

Melanin

Which of the following statements best supports the hypothesis that viruses can cause cancer?

Genes that regulate cell division are found in some viruses

Which of the following physiological responses is caused by the release of antidiuretic hormone

Increase in water reabsorption in the collecting dust

Which of the following is the number of protons in a lithium atom

3

Which of the following summarizes a change that takes place as solid turns to a liquid

Particles become less ordered

The pleura is a connective tissue sheath that covers which of the following organs

Lung

Which of the following vessels carries oxygenated blood

Pulmonary vein

Which of the following is the function of a totipotent cell

Develops into any kind of cell

Which of the following can lead to a tsunami?

Earthquakes

Testosterone is categorized as which of the following types of hormones

Androgen

In a phase diagram which of the following is the term used for a substance held at a temperature and pressure where the solid, liquid, and gaseous states of a substance exist simultaneously

Triple point

Which of the following best describe the result of using a catalyst in a chemical reaction

The reaction is completed in a shorter amount of time

Which of the following substances is responsible for donating H+ ions to act as a buffer when blood pH rises?

Carbonic acid

To separate genomic DNA fragments by which of these laboratory methods is most useful

Electrophoresis

Hikers who found a human body at high altitude in the Italian Alps thought the man had died recently, but tests indicated he was shot with an arrow more than 5300 years ago. Which of the following would be the best reason for prolonged preservation of the body

The body was frozen in the cold temperature of the ALps shorty after he died and reminaed frozen until it was found

Experiments cannot validate hypotheses only falsify them. The statement above can be restated in which of the following ways.

A hypothesis that has not been falsified remains provisional

In which of the following regions of the body are the tibia and fibula

Crural

Which of the following functions does the myelin sheath perform for a nerve cell

Insulation

Which of the following occurs in an oxidation reaction

Removal of electrons

Punnett Square, An organism with an unknown genotype is crossed with another organism that shows the recessive trait (aa). The punnet square below shows the results which of the following is the unknown genotypes.

Aa

To accurately measure the density of a series of small irregular solids made of plastic, wood ,fibreglass and glass, a student will need which of the following laboratory tools?

Graduated cylinder, water, weighing balance

Emphysema caused by damage to alveoli from toxins and pollutants is likely to result in the body having difficulty performing which of the following actions

Exchanging oxygen and carbon dioxide

For which of the following reasons does a chloride ion have a negative charge

It gained an electron

Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia

Urea

The triple point of a substance is the temperature and pressure at which the substances exists as which of the following

Simultaneously in solid, liquid, and gas phases

A patient goes to the doctor with a cold and sore throat and asks for antibiotics. The doctor refuses to prescribe antibiotics to the patient because the illness is caused by which of the following pathogens

Virus

Which of the following is an efferent neuron that is responsible for releasing a neurotransmitter that stimulates a muscle cell to contract

Motor neuron

Which of the following is the process in which an ovarian follicle matures an releases a reproductive egg

ovulation