Teas Science

A group of students perform an experiment to test terminal velocity, which of the following conclusions is supported by the data in the following data table?

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

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

peripheral nervous system and central nervous system

A myocardial infarction effects which of the following blood vessels of the heart?

Coronary

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

- Diffusion down a concentration gradient

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

Calcium

Nitrogen gas is an extremely stable molecule because its structure contains which of the following?

triple covalent bonds

Which of the following is a mass within the ovary that secretes hormone to maintain the uterine lining during pregnancy?

corpus luteum

If a portion of a strand of DNA bases reads 5' AGCTAGCGT 3' what would the sequence of basis on the complementary strand read?

3' TCGATCGCA 5'

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

Polarity of water molecules

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

lung

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

control group

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

The reaction is completed in a shorter amount of time.

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 is the approximate threshold value for mammalian neurons?

-55mV

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 is the function of a totipotent cell?

Develops into any kind of cell

In the following data table of an experiment carried out at 4°C (39.2°F) over four hours, which of the following options represents the dependent variable?

Bag mass change

In a hypertonic solution, water flows through aquaporin embedded in the plasma membrane of the cell. This type of transport is best known as which of the following?

facilitated diffusion

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

- Reverse transcriptase, an enzyme encoded by the virus.

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

ovulation

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

Triple point

Which of the following substances protects the skin from ultraviolet radiation?

melanin

Which of the following indicates the function of sodium bicarbonate released by the pancreas?

Sodium bicarbonate neutralizes the acidity of chyme

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

urea

Parasitic worm infestation is hypothesized to be damaging to the host. However, scientists have recently discovered the worm infestation can relieve the effects of certain autoimmune disorders. In which of the following way should the hypothesis be modified giving the new findings?

Worm infestation reduces the severity of certain autoimmune disorders.

Which of the following psychological responses is caused by the release of antidiuretic hormone?

Increase in water reabsorption in the collecting duct

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

cell membrane

Which of the following reasons explains why it is important for new scientific findings to be published?

Other scientists can validate or disapprove the findings

Which of the following is correct regarding the pH scale

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

Which of the following can lead to a tsunami?

earthquakes

Which of the following chemicals is released by one type of immune cell to directly activate another type of cell

Cytokines

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

Microtubule organization

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

Particles become less ordered

Lithium has an atomic number of 3 and a mass number of 7. Which of the following is the number of protons in a lithium atom?

3

In a certain plant, red flowers are dominant over white flowers. A plant heterozygous for red flowers and white flowers are crossed which of the following is the expected proportion of phenotypes in the next generation.?

2 red , 2 white

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

Diameter

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

proteins

Which of the following gland synthesizes antidiuretic hormones?

Hypothalamus

Which of the following are used to determine a persons DNA sequence?

genes

Which of the following types of cells produce and release antibodies?

plasma B cells

Testosterone is categorized as which of the following types of hormones

androgen

Osteoporosis results from which of the following

A decline in osteoblast activity while osteoblast activity continues at expected levels

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 5,300 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 shortly after he died and remained frozen until it was found.

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

Efferent arteriole

Which of the following vessels carries oxygenated blood

pulmonary artery

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

carbonic acid

An individual suffers severe blunt trauma to the thoracic cavity, which of the following organs are at greatest risk from this injury?

heart and lungs

A researcher wants to gather data on the average wing strength of all birds found in the American Northwest. The researchers only has one small net so all large birds were excluded from the study. The researcher's results were different than expected, but he believes his data include enough birds to estimate the strength of all birds. for which of the following reasons Should this data be rejected

Data are biased by the methodology.

Which of the following terms describes the relaxation of the chambers of the heart during the cardiac cycle?

diastole

Which of the following structures is in an exocrine gland?

parotid gland

A researcher writes grant proposal to repeat an experiment that was recently published by another researcher, which of the following statement best supports the grant proposal?

Repeating the published work will provide independent confirmation of the results.

Which of the following is a function of the bones?

storage of minerals

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

- It gained an electron

The pharynx is largely made of which of the following types of tissue?

Muscle tissue

Which Of the following explains why ice floats on top of a pond water rather than seeking to the bottom?

Crystal lattice structure of water

Which of the following statements explains the increase in reactivity of the elements going down group one of the periodic table?

The distance between protons and the valence electrons

Rheumatoid arthritis is an autoimmune condition that involves, which of the following psychological processes?

Inflammation

The triple point of a substance is the temperature and pressure at which of substance exist as which of the following?

Simultaneously in solid, liquid and gas phases

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

- Graduated cylinder, water, weighing balance

Which of the following structures exchange genetic material during crossing over?

Non sister chromatids

A student is comparing four different types of cells and observes that one contains many more mitochondria than the others. Which of the following conclusions should the student make?

The cells are muscle cells.

Which of the following classes of biological macromolecules includes enzymes?

Proteins

Which of the following is a component of the integumentary system that secretes pheromones?

apocrine gland

How Many times stronger is the hydrogen ion concentration of a pH 4 solution as compared with a pH 9 solution?

100,000

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

insulation

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

Virus

In which regions of the body are the tibia and fibula located?

Crural

Which of the following is a protein present in blood plasma?

fibrinogen

Which of the following correctly orders structures from simple to complex?

Atoms, cells, tissues organs

Which of the following statements applies to a catalyst?

A catalyst changes substrates to create products

Which of the following properties does soap, an emulsifier, have that make it useful for washing dirt off one's hands with water?

Soaps dual polar and nonpolar nature helps bond oil and water.

Which of the following organ filters access solutes from the blood?

Kidney

A shrug of the shoulders involves, which of the following actions?

Elevation and depression

What occurs during oxidation in an oxidation reaction?

Removal of electrons

Which of the following is the psychological function of dermcidin and cathelicidin?

Anti-microbial peptides

Which of the following layers of skin lack blood vessels?

epidermis

The covalent bonds between the monomers of an enzyme macromolecule are

peptide bonds

If a mother's _____ cell contains mutated DNA, this mutation can be passed to her offspring

Germ

Which of the following is supported by the data?

The time of fall is independent of the mass of the object

gray matter of brain is largely made up of

Neuron cell bodies

Water molecules enter cells by which of the following transport mechanisms

facilitated diffusion

Which of the following characteristics of water helps explain why coastal areas experience less dramatic temperature changes during the day than more inland areas.

Water has a high specific heat capacity

What type of bond involves the sharing of electron pairs between atoms?

Covalent bonds

Primary component of a cell membrane

phospholipids

Part of cell for producing energy / Powerhouse

Mitochondria

Where does gas exchange happen in the lungs?

alveoli

Which part of the brain is responsible for regulating breathing and heart rate?

Medulla oblongata

Layer of the skin responsible for producing new cells to replace dead skin

Epidermis

What is the main function of the large intestine?

Absorbing water and forming feces

Which of the following is an example of a biological macromolecule?

protein

Which of the following is the site of intracellular digestion?

Lysosomes

When a volcano erupts, its actions are similar to which of the following events?

A can of soda fizzing when it is opened.

Which of the following demonstrates a chemical reaction of water?

Water produces gas with sodium metal

If A represents atomic mass and Z represents atomic number, which of the following describes an atom after a proton is emitted from its nucleus?

A-1,Z-1

Which of the following endocrine organs is involved in regulating milk production following childbirth?

Pituitary gland

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

Which of the following cells transfer pigment granules to adjacent epidermal cells?

melanocytes

Which part of the eukaryotic cell is responsible for making ATP?

Mitochondria