ATI TEAS 7 Science
1. Which of the following is the appropriate threshold value for mammalian neurons?
o -80 Mv
o -55 mV
o 0 mV o +35 mV
2. In a
... [Show More] 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?
o 2 red, 2 white
o 4 red, 0 white o
3 red, 1 white o 1
red, 3 white
3. Which of the following structures is present in both prokarayotic cells?
o Endoplasmic reticulum
o Cell membrane
o Chloroplast o
Golgi apparatus
4. Which of the following can lead to a tsunami?
o Sunspot
activity o
Lightning strikes o
Flooding
o Earthquakes
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5. Which of the following are used to determine a person’s DNA sequence?
o Genes
o Blood type o
Hormones o
Enzymes
6. Which of the following organic molecules contain both an amine and carboxyl group?
o Lipids o
Chitin o
Cellulose
o Proteins
7. Osteoporosis results from which of the following o A decline in osteoclast activity
while osteoblast activity continues at expected levels o An increase in osteocyte
activity while osteoblast activity continues at expected levels
o A decline in osteoblast activity while osteoblast activity continues at expected levels
o An increase in osteocyte while activity continues at expected levels.
8. Which of the following is released by one type of immune cell to directly activate
type of immune cell?
o Lysozymes o
Perforin
o
Cytokines
Granzymes
9. The measurement indicated by the line across the centre of the cell is best referred
to as which of the following?
o Radius
o Diameter
o Area o Volume
10. Which of the following properties of water explains its solvent abilities for certain
substances?
o
o
o High surface tension o Kinetic energy of liquid water
molecules
o Polarity of water molecules
o High specific heat
11. Which of the following vessels caries oxygenated blood?
o Pulmonary vein
o Inferior vena cava
o Pulmonary artery o
Superior vena cave
12. Which of the following is a mass with the ovary that secretes hormones to
maintain the uterine lining during pregnancy? o Umbilical cord
o Corpus luteum
o Oocyte
Oviduct
13. To separate genomic DNA fragments by size, which of these laboratory methods is
most useful?
o Spectrophotometry
o Electrophoresis
o Filtration o Titration
14. 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?
o ff x ff
o Ff x Ff o
FF x FF o
Ff x ff
15. Which of the following physiological responses is caused by the release of
antidiuretic hormones?
o Decrease in water reabsorption in the collecting duct o Decrease in
the concentration of calcium in the glomerulus
o Increase in water reabsorption in the collecting
duct
o Increase I the concentration of calcium in the glomerulus [Show Less]