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TEAS 7 SCIENCE EXAM QUESTIONS AND ANSWERS
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TEAS 7 SCIENCE EXAM QUESTIONS AND ANSWERS
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TEAS 7 SCIENCE EXAM QUESTIONSAND ANSWERS
What part of the central nervous system releases chemicals that regulate the pituitary
gland ?
- hypothalamus
- cerebellum
- thalamus
- spinal cord - Answer-Hypothalamus
The shortening of a sarcomere in skeletal muscle is directly due to the interaction of
what?
- acetylcholine and acetylcholinesterase
- pepsin and pepsinogen
- myosin and actin
- dynein and kinsin - Answer-Myosin and actin
Mutations in which type of cell can be inherited by offspring?
- ovarian
- endocrine
- neural
- muscle - Answer-Ovarian
Describe the function of tendons
- tendons attach skeletal muscle to bone
- tendons attach two bones
- tendons attach bones to ligaments
- tendons attach skeletal muscles to ligaments - Answer-Attaches skeletal muscle to
bone
What substance is excreted by sweat glands in response to the breakdown of protein
and the formation of ammonia?
- lysozymes
- water
- urea
- sebum - Answer-Urea
What term describes the removal of metabolic waste from the body
- secretion
,- catabolism
- anabolism
- excretion - Answer-Excretion
A cell is placed in a hypertonic solution. Describe the resulting osmosis.
- there is no flow of water
- the net flow of water into and out of the cell is zero
- there is a net flow of water out of the cell
- there is a net flow of water into the cell - Answer-There is a net flow of water out of the
cell.
What's an example of active transport?
- aquaporins in kidney cells that help concentrate urine
- movement of substance from an area of high concentration to an area of low
concentration.
- movement of sodium and potassium across the cell membrane against the
concentration gradient.
- loss of water from a cell in a hypertonic solution. - Answer-Movement of sodium and
potassium across the cell membrane against the concentration gradient.
What vessel is responsible for carrying blood from the upper body to the right atrium of
the heart?
- pulmonary veins
- aorta
- pulmonary arteries
- superior vena cava - Answer-Superior vena cava
Carbohydrates are composed of which of the following ?
- nucleic acids
- monosaccharides
- isoprenoids
- amino acids - Answer-Monosaccharides
A student investigating the importance of wavelengths above and below the visible
spectrum for photosynthesis sets up an experiment as followers over a 2-month period,
all with illumination at 1 meter distance from plants grown with the same soil and
watering condition.
3 Arabidopsis plants exposed to ultraviolet light(uv)
3 Arabidopsis plants exposed to infared light (IR)
3 Arabidopsis plants exposed to white light
at the end of the experiment, she first finds that The IR treated plants, are scorched, the
uv treated plants have wilted, but the white light-treated plants are growing normally
, which statement is most likely correct? - Answer-Wavelength of lights the only variable
that has been changed between groups
What is a weakness of a correlational study?
- cannot be replicated
- cannot be determine causation
- inability to control independent variables
- too many variables to control - Answer-Cannot determine causation
A vasectomy is a procedure in which the vas deferens are cut. Which of the following
describes why a vasectomy leads to infertility?
- the vasectomy blocks the movement of sperm from the prostate gland to the
bulbourethral gland
- the vasectomy blocks the movement of sperm from the epididymis into the urethra
- the vasectomy blocks the movement of sperm from the ejaculatory duct into the
bulbourethral gland
- the vasectomy blocks movement of spermicide from the testis into the epididymis -
Answer-The vasectomy blocks the movement of sperm from the epididymis into the
urethra.
Lifelong protection after exposure to a virus such as chickenpox is due to which of the
following types of immunity?
- nonspecific
- innate
- transplantation
- active - Answer-Active
An equal mass of which state of matter could completely fill either a 100mL or 500mL
container?
- gas
- solid
- mixture
- liquid - Answer-Gas
Carbon has an atomic number of 6. What is true about isotope C-12
- c-12 posses 7 neutrons and 5 electrons in its nucleus
- c-12 posses 6 protons and 6 electrons in its nucleus
- c-12 posses 6 neutrons and 6 protons in its nucleus
- c-12 posses 7 protons and 5 neutrons in its nucleus - Answer-C-12 posses 6 neutrons
and 6 protons in its nucleus.
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