TEAS science practice 2

Which type of chemical reaction is demonstrated by the reaction below? Ba(NO3)2 + Na2SO4 → BaSO4 + 2 NaNO3 a. Double replacement b. Single replacement reaction c. Decomposition d. Acid-base reaction

Double replacement

T-lymphocytes mature and become functional in which of the following organs? a. Lymph nodes b. Thymus c. Spleen d. Bone marrow

thymus

Which blood vessel delivers blood directly into the right atrium? a. vena cava b. brachial artery c. aorta d. coronary artery

vena cava

isotopes are a. versions of one element with a different number of neutrons b. versions of one element with a different number of protons c. special orbitals in metal elements d. types of valence shells

versions of one element with a different number of neutrons

Which of the following needs to be present in order for a substance to be considered a nucleotide? a. Ribose, amino acid, phosphate b. 5 carbon sugar, nitrogenous base, triphosphate c. Deoxyribose, adenosine, triphosphate d. 5 carbon sugar, nitrogenous base, phosphate group

5 carbon sugar, nitrogenous base, phosphate group

A chemist needs to add 5 µL of a reagent to a reaction solution. Which of the following is the best tool to accomplish this? a. A 1-mL pipette b. A volumetric flask c. A micropipette d. A volumetric pipette

A micropipette

Which of the following statements is true about protein digestion? a. The majority of protein absorption occurs in the large intestine. b. The majority of mechanical protein digestion occurs in the stomach. c. Chemical digestion of protein initially occurs in the mouth. d. Absorption of protein occurs primarily in the small intestine.

Absorption of protein occurs primarily in the small intestine.

Which of the following is incorrect about muscle contraction? a. Muscle contraction requires ATP. b. Sarcomeres shorten during contraction. c. Neurotransmitters stimulate muscle contraction. d. Actin and myosin filaments shorten during contraction.

Actin and myosin filaments shorten during contraction.

Which of the following enzymes is responsible for breaking down a polysaccharide to a disaccharide? a. Catalase b. Amylase c. Cobalamin d. Trypsin

Amylase

Which of the following would be the best choice to measure 0.0015 grams of a chemical reagent? a. Triple beam balance b. Metric ruler c. Graduated cylinder d. Analytical balance

Analytical balance

In the sliding filament theory of muscle contraction, which of the following ions bind to troponin and initiate actin-myosin binding? a. Sodium b. Potassium c. Calcium d. Iron

Calcium

Which of the following is not true about thermoregulation? a. Contraction of arrector pili muscles facilitates vasodilation. b. Sweating facilitates cutaneous vasodilation. c. Cutaneous vasodilation cools the body by allowing heat to be released through skin. d. Cutaneous vasoconstriction warms the body by restricting blood flow in the skin.

Contraction of arrector pili muscles facilitates vasodilation.

Which of the following organ systems is correctly paired with its function? a. Integumentary / obtaining nutrients necessary for growth, energy, and normal body processes b. Endocrine / regulation of homeostasis through hormone signaling c. Cardiovascular / providing the first layer of protection from outside pathogens d. Gastrointestinal / transport substances to all tissues of the body

Endocrine / regulation of homeostasis through hormone signaling

Which of the following is a heterotrophic organism with a genome stored in DNA? a. Virus b. Plants c. Human d. Algae

Human

Physiologically, bone resorption and deposition are in equilibrium. Which of the following is the result of inhibition of bone resorption and prevention of calcium removal from the bone? a. Hypocalcemia b. Kyphosis c. Muscle atrophy d. Achondroplastic dwarfism

Hypocalcemia

What is the role of the myelin sheath in the nervous system? a. Produce neurotransmitters b. Insulate axons c. Transport organelles and macromolecules d. Store ions for action potential propagation

Insulate axons

Which of the following is a unique property of water? a. It has five different states b. It is one of the few substances whose liquid state can float on its solid state c. Its ability to dissolve so many solutes that it is called the "universal solvent" d. It has a low specific heat

Its ability to dissolve so many solutes that it is called the "universal solvent"

Which of the following is not true about reproductive hormones? a. LH (luteinizing hormone) stimulates ovulation and production of testosterone. b. FSH (follicle-stimulating hormone) stimulates maturation of sperm and ovum. c. LH (luteinizing hormone) is produced by the posterior pituitary gland. d. FSH (follicle-stimulating hormone) is produced by the anterior pituitary gland.

LH (luteinizing hormone) is produced by the posterior pituitary gland.

Which of the following is true about hormones? a. Failure of the pituitary gland to produce thyroid-stimulating hormone can result in hyperthyroidism. b. Overproduction of growth hormone can lead to dwarfism. c. Excessive production of cortisol in the adrenal glands can lead to low levels of sodium in the blood. d. Lack or insufficiency of insulin produced by the pancreas can lead to diabetes.

Lack or insufficiency of insulin produced by the pancreas can lead to diabetes.

In adaptive immunity, which of the following is responsible for a very rapid response upon subsequent exposure to the same antigen? a. B-cells b. Macrophage cells c. Cytotoxic cells d. Memory cells

Memory cells

________ is the mechanism of glandular secretion in which stimulation results in continuous production of a hormone above the normal level. a. Thermoregulation b. Homeostasis c. Negative feedback d. Positive feedback

Positive feedback

Which of the following statements regarding digestion is false? a. The pancreas secretes the hormone insulin to regulate blood sugar levels. b. The presence of fiber in the esophagus promotes peristalsis. c. Villi and microvilli increase surface area for absorption. d. The hormone glucagon is secreted from the pancreas and stimulates mechanical digestion.

The hormone glucagon is secreted from the pancreas and stimulates mechanical digestion.

Which of the following does not describe the dermis? a. A vascular layer of the skin b. The thickest layer of the skin c. The layer of the skin where cells containing the pigment melanin are found d. The layer of the skin that contains the network of capillaries necessary for thermoregulation

The layer of the skin where cells containing the pigment melanin are found

Which of the following statements is true? a. Melting is the phase transition of a substance from a gas to a liquid. b. Melting is the transition of a substance from a liquid to a solid. c. The triple point of a substance is the temperature and pressure at which three phases of a substance may coexist in thermodynamic equilibrium. d. A phase diagram is a graph of physical states of a substance under varying pressures as a function of temperature.

The triple point of a substance is the temperature and pressure at which three phases of a substance may coexist in thermodynamic equilibrium.

Why are control groups used in experiments? a. To ensure the accuracy of measurements b. To help scientists quickly perform experiments c. To minimize the effect of variables d. To increase the amount of data collected

To minimize the effect of variables

Which of the following lists the respiratory passageways in order from largest diameter to smallest diameter? a. Trachea, bronchi, bronchioles b. Trachea, bronchioles, bronchi c. Bronchi, trachea, bronchioles d. Bronchioles, bronchi, trachea

Trachea, bronchi, bronchioles

Which of the following correctly describes anatomical position? a. Prone, arms at sides, palms facing anteriorly b. Seated, arms at sides, palms facing posteriorly c. Upright, arms at sides, palms facing anteriorly d. Supine, arms at sides, palms facing posteriorly

Upright, arms at sides, palms facing anteriorly

A study draws the conclusion that obesity is a significant cause of Type 2 diabetes. Which of the following experimental parameters would not build confidence that such a cause and effect relationship is likely true? a. The inclusion of proper controls b. Use of a small sample size c. A large number of data points d. Taking in mind all obtained results

Use of a small sample size

Blood vessels that supply nutrients and oxygen enter the bone tissues through the __________. a. Lacunae b. Osteons c. Lamellae d. Volkmann canals

Volkmann canals

Which of the following is a unique property of water? a. Its exceptional low heat of vapourization b. Its low surface tension c. Its volume decreases when freezing d. When freezing, water molecules can form hydrogen bonds more easily

When freezing, water molecules can form hydrogen bonds more easily

A lung with a low level of compliance could be best described as _____________. a. A lung with a high elasticity but with damaged alveoli. b. a lung with normal function. c. a stiff lung requiring extra work to accomplish normal breathing. d. a highly elastic lung allowing breathing occur with reduced work.

a stiff lung requiring extra work to accomplish normal breathing.

During contraction, thin ________________ filaments slide past the thick ______________ filaments which result to shortening of sarcomere and contraction of the muscle. a. actin/ tropomyosin b. troponin/ tropomyosin c. myosin/ troponin d. actin/ myosin

actin/ myosin

Which of the following conditions occurs when a blood vessel in the brain becomes blocked? a. stroke b. migraine c. aneurysm d. heart attack

aneurysm

Which of the following is not part of the small intestine? a. colon b. duodenum c. ileum d. jejunmun

colon

One of the primary functions of blood is to deliver oxygen-rich blood to the body's tissues. This is accomplished by ________________, which contain the oxygen-carrying protein called ___________________. a. plasma; albumin b. leukocytes; myoglobin c. erythrocytes; hemoglobin d. platelets; hemoglobin

erythrocytes; hemoglobin

Which of the following structures is responsible for the transport of female gametes? a. urethra b. fallopian tubes c. cervix d. vas deferns

fallopian tubes

Which of the following is a nonspecific response to tissue damage characterized by redness, pain, heat, swelling and loss of function in the injured area? a. Passive immunity b. Inflammation c. Antibody-mediated immunity d. Cell-mediated immunity

inflammation

Which of the following terms is alternatively called the "voice box"? a. larynx b. trachea c. pharynx d. uvula

larynx

A guinea pig with short orange fur is crossed with a guinea pig with long orange fur. The offspring are also crossed, and the F2 generation contains 17 guinea pigs with long orange fur, 2 guinea pigs with short beige fur, 6 with short orange fur, and 7 with long beige fur. Which of the following phenotypes are dominant? a. Short and beige are dominant. b. Long and beige are dominant. c. Dominance cannot be determined. d. Long and orange are dominant.

long and orange are dominant

HIV is a virus that destroys the body's defense against diseases by inserting itself into the host's DNA. In which part of the infected host cell will HIV virus be found? a. ribosomes b. lysosomes c. peroxisomes d. nucleus

nucleus

Which structure contains most of the genetic material in the cell? a. Lysosomes b. Nucleus c. Cell membrane d. Ribosomes

nucleus

The adrenal glands, which are primarily responsible for producing the hormones cortisol and aldosterone, are located where? a. on top on each kidneys b. anterior to larynx c. sphenoid bone of the skull d. at the back of thyroid

on top of each kidneys

Which of the following hormones is responsible for increasing calcium levels in the blood by stimulating bone resorption? a. thyroid hormone b. parathyroid hormone c. insulin d. luteinizing hormone

parathyroid hormone

Where are the glomeruli and Bowman's capsules found? a. Ureter b. Renal pelvis c. Renal cortex d. Renal column

renal cortex

The renin-angiotensin-aldosterone system (RAAS) is essential in regulating blood pressure. Which of the following hormones involved in RAAS is produced by the kidney? a. Renin b. Angiotensin I c. Angiotensin II d. Aldosterone

renin

Osteoblasts are specialized cells that secrete the protein collagen and other substances necessary for bone formation. Which of the following organelles is more likely to be predominant in osteoblasts? a. ribosomes b. mitochondria c. lysosomes d. nucleus

ribosomes

Which of the following is a substance that the kidneys remove from the blood during filtration? a. Salts b. Carbon Dioxide c. Oxygen d. Red Blood Cells

salts

which of the following is a flat bone? a. scapulae b. vertebrae c. ankle bone d. wrist bone

scapulae