Science 1

What types of reaction is Cu (s) + 2AgNO3(aq)→2Ag(s) + Cu(NO3)2(aq)?

Single replacement

What is the typical way a solid would turn to a liquid and then to a gas?

Melting, then vaporizing

Which of the following is exchanged between two or more atoms that undergo ionic bonding?

Valence electrons

Which of the following are examples of homeostatic mechanisms?

Shivering when the body temperature falls, Secreting insulin to decrease blood sugar concentration, increasing heart rate when blood pressure is low

Which of the following organic molecules contain both an amine and carboxyl group?

Proteins

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

Diameter

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

Diastole

Both digestion and absorption happen in which of the following parts of the digestive system?

Small intestine

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

Fibrinogen

The covalent bonds between the monomers of an enzyme macromolecule are:

Peptide bonds

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

Soap’s dual polar and nonpolar nature helps bond oil and water

Which of the following layers of skin lack blood vessels?

Epidermis

Which of the following is the function of a totipotent cell?

Develops into any kind of cell

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

Ovulation

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

Simultaneously in solid, liquid, and gas phases

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

It gained an electron

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

Mitral valve

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

Insulin

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

Ectoderm

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

Exocrine glandular

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

Increase in water reabsorption in the collecting duct

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?

2 Red, 2 white

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 approximate threshold value for mammalian neurons?

-55 mV

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 difference between isotonic and isometric muscle contractions?

Isotonic contractions produce movement while isometric contractions produce no movement.

Which part of the respiratory system is responsible for regulatebreathing rate and depth?

Diaphragm

Which of the following describes the function of ligaments?

Ligaments attach two bones

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

Skin

What is the chemical formula for water?

H2O

Which factor is primarily responsible for the movement of water across cell membranes in osmosis?

Concentration of solute particles in the solution.

What are the four nucleotide bases found in DNA?

Adenine, thymine, cytosine, guanine

What is a primer in DNA sequencing?

A short piece of single-stranded DNA that binds to the template DNA and acts as a “starter” for the polymerase.

A nurse is caring for a patient who has suffered a traumatic brain injury after falling from a height.

The nurse knows that the severity of the injury depends on the speed at which the patient hit the ground.

Which of the following factors affects the terminal velocity of a falling object?

The shape and surface area of the object.

A nurse is caring for a patient who has suffered a traumatic brain injury after falling from a height.

Thyroxine

Which organ in the human body is responsible for the removal of damaged red blood cells and the production of certain types of white blood cells?

Spleen

Which of the following represents the first line of defense to an intruding pathogen?

Innate immunity

A patient with chronic kidney disease is at risk for developing which of the following electrolyte imbalances?

Increase in the concentration of potassium in the blood.

During the aging process, not all hormone levels decrease; some actually increase. Which of the following is a hormone that may increase as a person ages?

Luteinizing

What type of reaction is described by the following equation?

ZnBr2(aq) + 2KOH(aq) → Zn(OH)2(s) + 2KBr(aq)

DOuble replacement

In the following single-replacement reaction, ______ replaces ______.

Cl2+2NaI→2NaCl+I2

Chlorine, iodine

A spoonful of sugar is added to a hot cup of tea. All the sugar dissolves. How can the resulting solution be described?

Unsaturated and homogeneous

A researcher notices a positive correlation between the height of a plant and nutrient concentration over time. Based on this observation, what conclusion does he reach?

When the amount of nutrients available to the increases, its height also increases

When would a cell most likely contain the most nucleotides?

G1

Which example is part of the scientific method?

A researcher analyzes how many plants respond well to a new fertilizer

What is the final structure through which urine must travel to empty out of the body?

Urethra

Fertilization (the fusing of one sperm and an ovum) results in a(n) _____.

Zygote

Which of the following describes one difference between skeletal muscles and cardiac muscles?

Cardiac muscles contain intercalated dics, whereas skeletal muscles do not

Which of the following is the term given to the sequence of nucleotides that contains the information to make a specific protein molecule?

Gene

Which of the following distinguishes endocrine and exocrine glands from another?

The presence or absence of ducts