Teas Science #5

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

Reverse transcriptase, an enzyme encoded by the virus.

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 function of a totipotent cell?

Develops into any kind of cell

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

Polarity of water molecules

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 chemicals is released by one type of immune cell to directly activate another type of immune cell?

Cytokines

Testosterone is categorized as which of the following types of hormones?

Androgen

Which of the following are used to determine a person's DNA sequence?

Genes

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

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

Ósmosis

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

Carbonic acid

Which of the following glands synthesizes antidiuretic hormone?

Hypothalamus

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

Which of the following statements describes how the body system in the image can affect the cardivascular system?

It aids in lowering CO, levels in the blod.

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

Peripheral nervous system and central nervous system

During which of the following days in the menstrual cycle is a woman most fertile? (You will find hot spots to select in the artwork below. Select only the hot spot that corresponds to your answer.)

12-14, which corresponds to the orange hot spot , indicating the time of ovulation and the LH surge

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

Corpus luteum

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

Coronary

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

Bag mass change

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 substances protects the skin from ultraviolet radiation?

Melanin

Which of the following physiological responses is caused by the release of anti-diuretic hormone?

Increase in water reabsorption in the collecting duct

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 structure of the female reproductive system is the source of the blood and mucosal tissue during menstruation? (You will find hot spots to select in the artwork below. Select only the hot spot that corresponds to your answer.)

Between fallopian tubes

Which of the following images are the pulmonary veins correctly highlighted

2 veins coming out laterally

Which of the following is the approximate threshold value for mammalian neurons?

-55mV

Which of the following vessels carries oxygenated blood?

Pulmonary veins

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

Proteins

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

Plasma B cells

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

Electrophoresis

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?

ffxff

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

(A) Pituitary gland

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

Control

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

12

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

Ovulation

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

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

Efferent arteriole

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

Other scientists can validate or disprove the findings

Which of the following can lead to a tsunami?

Earthquakes

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

Microtubule organization

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

Genes that regulate cel division are found in some viruses.

Osteoporosis results from which of the following?

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

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

Lung

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

Triple covalent bonds

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

Calcium

Which of the following describes the function of the highlighted structure in this image?

It contains vocal cords essential for speech

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

Proteins

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

Particles become less ordered.

A group of students perform 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 the resulting 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.