Latest TEAS VII Questions - Science Section
1. Which of the following are the two major parts
a. Peripheral nervous system and central nervous system.
b. Autonomic nervous system and somatic nervous system.
c. Peripheral nervous system and somatic nervous system.
d. Autonomic nervous system and central nervous system.
2. A myocardial infarction affects which of the following blood vessels of the heart?
a. Pulmonary
b. Coronary
c. Aorta
d. Vena cava
3. Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?
a. Passive transport using carrier proteins
b. Conversion to carbon monoxide
c. Diffusion down a concentration gradient
d. Active transport using energy
4. Which of the following ions binds to the troponin complex, initiating the contraction of a muscle?
a. Potassium
b. Sodium
c. Calcium
d. Phosphorus
5. Nitrogen gas is an extremely stable molecule because its structure contains which of the following?
a. Triple covalent bonds
b. Hydrogen bonds
c. Ionic bonds
d. Resonance bonds
6. Which of the following is a mass within the ovary that secretes hormones to maintain the uterine lining during pregnancy?
a. Oviduct
b. Oocyte
c. Corpus luteum
d. Umbilical cord
7. If a portion of a strand of DNA bases reads 5’AGCTAGCGT 3′, what would the sequence of bases on the complimentary strand read?
a. 3′ TCGATCGCA 5′
b. 3′ AGCTAGCGT 5′
c. 5′ UCGAUCGCA 3′
d. 5′ TCGUTCGCU 3′
8. Which of the following properties of water explains its solvent abilities for certain substances?
a. High surface tension.
b. Kinetic energy of liquid water molecules.
c. High specific heat.
d. Polarity of water molecules.
9. The pleura is a connective tissue sheath that covers which of the following organs?
a. Liver
b. Spleen
c. Heart
d. Lung
10. Which of the following is a group that can be measured against the experimental group?
a. Variable
b. Manipulated
c. Control
d. Responding
11. Which of the following best describes the result of using a catalyst in a chemical reaction?
a. A great amount of heat energy is released by the reaction.
b. A more desirable product is often formed.
c. The yield of the product is increased.
d. The reaction is completed in a shorter amount of time.
12. Which of the following statements best supports the hypothesis that viruses can cause cancer?
a. Viruses and cancer cells both replicate rapidly.
b. Cellular DNA has sequences related to viral sequences.
c. Cancerous and normal cells share genetic sequences.
d. Genes that regulate cell division are found in some viruses.
13. Which of the following is the approximate threshold value for mammalian neurons?
a. 0 mV
b. +35 mV
c. -55 mV
d. -80 mV
14. In a plant in which fluzzy leaves (F) are dominant over smooth leaves (f), which of the following crosses will produce only offspring with smooth leaves?
a. Ff * ff
b. Ff * Ff
c. FF * FF
d. ff * ff
15. Which of the following is the function of a totipotent cell?
a. Carries electrical impulses.
b. Develops into any kind of cell.
c. Fights infectious diseases.
d. Aids in the maturation of sex cells.
16. To separate genomic DNA fragments by size, which of these laboratory methods is most useful?
a. Filtration
b. Spectrophotometry
c. Titration
d. Electrophoresis
17. 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?
a. Osmosis
b. Active transport
c. Facilitated diffusion
d. Diffusion
18. 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?
a. The protein that makes up the capsid of the virus.
b. Reverse transcriptase, an enzyme encoded by the virus.
c. Receptor proteins located on the surface of the virus.
d. The phospholipids found on the envelope of the virus.
19. 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?
a. Critical temperature
b. Critical point
c. Triple point
d. Absolute zero
20. Which of the following substances protects the skin from ultraviolet radiation?
a. Sebum
b. Keratin
c. Perspiration
d. Melanin