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SCIENCE PRACTICE QUESTIONS TEAS ATI EXAM VERSION 7 QUESTIONS AND ANSWERS
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SCIENCE PRACTICE QUESTIONS TEAS ATI EXAM VERSION 7 QUESTIONS AND ANSWERS
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SCIENCE PRACTICE QUESTIONS TEASATI EXAM VERSION 7 QUESTIONS AND
ANSWERS
In which of the following areas does protein breakdown begin in the human body?
A. Mouth
B. Stomach
C. Small intestine
D. Large intestine - Answer-B. The stomach
The stomach is the first place in the digestive system in which proteinases are
produced.
Which of the following cell types is responsible for the production of soluble antibodies?
A. Cytotoxic T cell
B. Macrophage cell
C. Helper T cell
D. B cell - Answer-D. B cell
The production of antibodies by B cells is part of the humoral response to antigens.
Which of the following organ systems is responsible for transporting nutrients, water,
and other substances throughout the human body?
A. Respiratory
B. Immune
C. Nervous
D. Circulatory - Answer-D. Circulatory
The heart pumping blood through the arteries, capillaries, and veins provides the means
of transporting substances throughout the body.
Which of the following is characteristic of the human organism?
A. Autotrophic with a genome stored in DNA
B. Heterotrophic with a genome stored in DNA
C. Autotrophic with a genome stored in RNA
D. Heterotrophic with a genome stored in RNA - Answer-B. Heterotrophic with a
genome stored in DNA
Humans consume rather than manufacture nutrient molecules (heterotrophic) and
human genes are encoded in DNA.
Which of the following is the function of the lymph nodes in mammals?
A. Pump oxygen into tissue spaces
B. store extra glucose for emergencies
C. Synthesize hemoglobin for erythrocytes
D. Filter debris from intracellular spaces - Answer-D. Filter debris from intracellular
spaces
, Lymph notes filter debris, lymphocytes, and pathogens from intracellular fluid.
The bands in the muscle sarcomere are formed by actin and which of the following
other proteins?
A. Myosin
B. Dynein
C. Keratin
D. Myofibril - Answer-A. Myosin
Myosin contains "heads" that contact actin and pull the actin fibers together in an ATP-
dependent mechanism that causes muscles to contract.
Which of the following structures within a human cell is responsible for recycling the
materials no longer functional or needed within the cell?
A. Ribosome
B. Lysosome
C. Mitochondrion
D. Nucleolus - Answer-B. Lysosome
Lysosomes are specialized vacuoles containing digestive enzymes.
Which of the following is the correct structure and function of the cell membrane?
A. A double glycoprotein structure with embedded lipid bodies provides shape and
rigidity to the cytoplasm.
B. A double layer of phosphate proteins with lipid channels allows molecules to pass
from the inside to the outside of the cells.
C. Nonpolar phosphate heads and polar lipid tails from a bilayer to control the transport
of proteins.
D. A phospholipid bilayer with embedded proteins regulates molecules entering and
leaving cytoplasms. - Answer-D. A phospholipid bilayer with embedded proteins
regulate molecules entering and leaving cytoplasms.
The cell membrane consists of a phospholipid bilayer with polar phosphate heads, non
polar lipid tails, and embedded proteins, which permit the movement of molecules
across the membrane.
which of the following chemical compounds prevents the lungs from collapsing?
A. Mucus
B. Surfactant
C. Enzymes
D. Buffers - Answer-B. Mucus
Surfactants are lipopolysaccharides that have a hydrophobic and hydrophilic layer. They
keep the lungs inflated.
Which of these structures diverts food into the esophagus and prevents it from entering
the lungs?
A. Uvula
B. Soft palate
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