ATI TEAS 7 Science With Complete Solutions

ATI TEAS 7 Science With Complete Solutions

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 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


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

o 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 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

o 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