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TEAS 7 Science TEAS 7 Science Practice Test 1 Which of the following anatomical struct...

Which of the following anatomical structures is directly involved in the production of hormones?

A. Pituitary ,Pancreas

B. Penis,Pons

C. Pancreas ,Penis

D. Prostate, Pancreas

Answer Explanation:

The pituitary and the pancreas are both structures of the endocrine system that produce hormones involved in body regulation, growth reaand development, sexual functioning, and other processes. The penis Is a structure of the reproductive system that responds to hormones, but it does not produce them. The prostate plays a role in converting testosterone (produced in the testicles) into dihydrotestosterone, but does not actively produce hormones. The pons is located in the brain stem and relays nerve signals that coordinate messages between the brain and the body. The pericardium is a structural component of the cardiovascular system.

Therefore, the Correct Answer is A.

More Questions on TEAS 7 Science

  • Q #1: Which of the following orbitals is the last to fill?

    A. 1s

    B. 3s

    C. 4p

    D. 6s

    Answer Explanation

    Of these orbitals, the last to fill is 6s.

    Orbitals fill in the following order: 1s, 25, 2p. 35, 3p, 4s, 3d, 4p, 55, 4d, 5p. 6s, 4f, 5d, 6p. 7s, 5f, 6d, and 7p. The number is the orbital number, and the letter is the sublevel identification. Sublevels has one orbital and can hold a maximum of two electrons. Sublevel p has three orbitals and can hold a maximum of six electrons. Sublevel d has five orbitals and can hold a maximum of 10 electrons, Sublevel f has seven orbitals and can hold a maximum of 14 electrons.

  • Q #2: Which of the following molecules exhibits ionic bonding?

    A. NaCl

    B. CO2

    C. C6H12O6

    D. H2O

    Answer Explanation

    Sodium chloride exhibits lonic bonding due to the attraction between Na+ ions and Cl- ions.

    Typically, elements on the opposite sides of the periodic table (a metal and a nonmetal) form ionic bonds. Carbon dioxide, water, and glucose exhibit covalent bonding. Typically, elements on the same side of the periodic table (two or more nonmetals) form covalent bonds.

  • Q #3: Which of the following anatomical terms is NOT part of the knee?

    A. Medial collateral ligament

    B. Patella

    C. Lateral malleolus

    D. Lateral meniscus

    Answer Explanation

    The term "lateral malleolus" refers to the bony prominence on the outer side of the ankle.

    It is part of the ankle joint, not the knee joint. The other options, such as the medial collateral ligament, patella, and lateral meniscus, are all associated with the knee joint.

  • Q #4: What is the name for the physical presentation of an organism's genes?

    A. Phenotype

    B. Species

    C. Phylum

    D. Genotype

    Answer Explanation

    Phenotype is the physical presentation of an organism's genes. In other words, the phenotype is the physical characteristics of the organism. Phenotype is often contrasted with genotype, the genetic makeup of an organism. The genotype of the organism is not visible in its presentation, although some of the characteristics encoded in the genes have to do with physical presentation. A phylum is a group of classes that are closely related. A species is a group of like organisms that are capable of breeding together and producing similar offspring.

  • Q #5: Homeostasis is defined as:

    A. Ability of human beings to keep body weight within normal limits

    B. Maintenance of a constant external temperature inside a room

    C. Ingestion of enough food to keep hunger pains from developing

    D. Tendency of the body to maintain a stable environment

    Answer Explanation

    Homeostatic mechanisms are involuntary actions by organs, glands, tissues and cells to maintain balance within the body. If a function is disrupted the body will readjust in an attempt to maintain balance. During periods of starvation the body will break down glucose reserves in order to maintain normal glucose levels.

  • Q #6: Enzymes catalyze biochemical reactions by ________

    A. Lowering the potential energy of the products

    B. Separating inhibitors from products

    C. Forming a complex with the products

    D. Lowering the activation energy of the reaction

    Answer Explanation

    Enzymes act as catalysts for biochemical reactions. A catalyst is not consumed in a reaction, but rather lowers the activation energy for that reaction. The potential energy of the substrate and the product remain the same, but the activation energy-the energy needed to make the reaction progress can be lowered with the help of an enzyme.

  • Q #7: A patient lying flat on their back is in which of the following positions?

    A. Prone

    B. Supine

    C. Lateral

    D. Medial

    Answer Explanation

  • Q #8: Which of the following are examples of homeostatic mechanisms?

    A. Increasing heart rate when blood pressure is low, Consuming excess calories to gain weight

    B. Lifting weights to increase muscle mass

    C. Shivering when the body temperature falls

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

    Answer Explanation

    Homeostatic mechanisms are involuntary actions by organs, glands, tissues and cells to maintain balance within the body. For example, if a person becomes dehydrated, the kidneys will retain fluid by decreasing urine output.

    Consuming excess calories and lifting weights are not involuntary actions, nor do they maintain the body in its baseline state. Rather, they are actions specifically taken to move the body away from its baseline.

  • Q #9: Which structure of the nervous system carries action potential in the direction of a synapse?

    A. Cell body

    B. Axon

    C. Neuron

    D. Myelin

    Answer Explanation

    Axons carry action potential in the direction of synapses. Axons are the long, fiber-like structures that carry information from neurons. Electrical impulses travel along the body of the axons, some of which are up to a foot long.

    A neuron is a type of cell that is responsible for sending information throughout the body. There are several types of neurons, including muscle neurons, which respond to instructions for movement; sensory neurons, which transmit information about the external world; and interneurons, which relay messages between neurons. Myelin is a fat that coats the nerves and ensures the accurate transmission of information in the nervous system.

  • Q #10: Which of these does NOT match the nitrogenous base to the nucleobase?

    A. Purine: Adenine

    B. Purine: Thymine

    C. Pyrimidine: Uracil

    D. Pyrimidine: Cytosine

    Answer Explanation

    There are two types of nitrogenous bases: purine and pyrimidine bases. Purine bases have two rings in their structure and consist of adenine and guanine. Pyrimidine bases only have one ring in their structure and consist of thymine and cytosine (DNA) and uracil and cytosine (RNA). Therefore, the correct answer is B since thymine is a pyrimidine.

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