ATI TEAS Science Exam 2026 | Real Exam Questions &
Verified Answers | Complete TEAS Prep
1. Describe how ribosomes contribute to the process of protein synthesis in
cells.
Ribosomes remove waste products from the cell.
Ribosomes translate genetic information into amino acid sequences
to form proteins.
Ribosomes convert glucose into energy for the cell.
Ribosomes regulate the flow of ions across the cell membrane.
2. Cells in the pancreas manufacture large amounts of protein. Which of these
would you expect to find a large amount of, or number of, in pancreatic
cells?
plasma membrane
chloroplasts
smooth endoplasmic reticulum
rough endoplasmic reticulum
lysosomes
3. In which of the following structures are the testes located?
Prostate
Mesentery
Scrotum
Epididymis
,4. Which enzyme is specifically responsible for the hydrolysis of starch into
sugars?
Amylase
Lactase
Lipase
Pepsin
5. Which gland, about the size of a pea, produces melatonin and regulates the
sleep cycle?
Pineal
Thyroid
Adrenal
Pituitary
6. What is the main role of a control group in scientific experiments?
To provide the correct answer to an investigation
To determine the dependent variables
To function as a third variable group
To establish a standard for data comparison
7. If a complication arises that affects the development of fetal chorionic tissue,
what potential impact could this have on pregnancy?
Improved maternal health
Increased fetal movement
Enhanced nutrient absorption
, Impaired placental function
8. Which body system is responsible for the absorption of nutrients into the
bloodstream?
Excretory system
Respiratory system
Endocrine system
Digestive system
9. What hormone stimulates contraction of the uterus during childbirth?
Oxytocin
Growth Hormone (GH); also named Adrenocorticotropic Hormone
(ACTH)
Luteinizing Hormone (LH)
Prolactin
10. What results from the release of dopamine into the nerve synapse?
Dopamine binds to receptor proteins on the membrane of the
postsynaptic cell
The presynaptic neuron fires an action potential
Dopamine causes the postsynaptic nerve cell to contract
Dopamine enters the cytoplasm of the postsynaptic cell
11. Which of the following would be an example of negative feedback?
An increase in blood sugar causing a release of insulin
A decrease in blood sugar causing a release of glucagon
, Both A and B
Neither A nor B
12. What is the primary role of mitochondria in sperm cells?
Movement propulsion
Genetic information storage
Energy production
Chemical signaling
13. What is the purpose of a control group in an experiment?
To ensure the subjects are representative of the population
To manipulate the independent variable
To provide a basis for comparison when evaluating treatments
To gather data on the dependent variable
14. Describe the role of acinar cells in the digestive process.
Acinar cells are involved in the absorption of nutrients in the
intestines.
Acinar cells store bile produced by the liver.
Acinar cells produce and secrete digestive enzymes that help
break down food in the small intestine.
Acinar cells regulate blood sugar levels by producing insulin.
15. Stem cells can be used to treat diabetes type 1. How?
Replacement of the bodies insulin receptors to enable the blood
glucose to be taking up into cells
Verified Answers | Complete TEAS Prep
1. Describe how ribosomes contribute to the process of protein synthesis in
cells.
Ribosomes remove waste products from the cell.
Ribosomes translate genetic information into amino acid sequences
to form proteins.
Ribosomes convert glucose into energy for the cell.
Ribosomes regulate the flow of ions across the cell membrane.
2. Cells in the pancreas manufacture large amounts of protein. Which of these
would you expect to find a large amount of, or number of, in pancreatic
cells?
plasma membrane
chloroplasts
smooth endoplasmic reticulum
rough endoplasmic reticulum
lysosomes
3. In which of the following structures are the testes located?
Prostate
Mesentery
Scrotum
Epididymis
,4. Which enzyme is specifically responsible for the hydrolysis of starch into
sugars?
Amylase
Lactase
Lipase
Pepsin
5. Which gland, about the size of a pea, produces melatonin and regulates the
sleep cycle?
Pineal
Thyroid
Adrenal
Pituitary
6. What is the main role of a control group in scientific experiments?
To provide the correct answer to an investigation
To determine the dependent variables
To function as a third variable group
To establish a standard for data comparison
7. If a complication arises that affects the development of fetal chorionic tissue,
what potential impact could this have on pregnancy?
Improved maternal health
Increased fetal movement
Enhanced nutrient absorption
, Impaired placental function
8. Which body system is responsible for the absorption of nutrients into the
bloodstream?
Excretory system
Respiratory system
Endocrine system
Digestive system
9. What hormone stimulates contraction of the uterus during childbirth?
Oxytocin
Growth Hormone (GH); also named Adrenocorticotropic Hormone
(ACTH)
Luteinizing Hormone (LH)
Prolactin
10. What results from the release of dopamine into the nerve synapse?
Dopamine binds to receptor proteins on the membrane of the
postsynaptic cell
The presynaptic neuron fires an action potential
Dopamine causes the postsynaptic nerve cell to contract
Dopamine enters the cytoplasm of the postsynaptic cell
11. Which of the following would be an example of negative feedback?
An increase in blood sugar causing a release of insulin
A decrease in blood sugar causing a release of glucagon
, Both A and B
Neither A nor B
12. What is the primary role of mitochondria in sperm cells?
Movement propulsion
Genetic information storage
Energy production
Chemical signaling
13. What is the purpose of a control group in an experiment?
To ensure the subjects are representative of the population
To manipulate the independent variable
To provide a basis for comparison when evaluating treatments
To gather data on the dependent variable
14. Describe the role of acinar cells in the digestive process.
Acinar cells are involved in the absorption of nutrients in the
intestines.
Acinar cells store bile produced by the liver.
Acinar cells produce and secrete digestive enzymes that help
break down food in the small intestine.
Acinar cells regulate blood sugar levels by producing insulin.
15. Stem cells can be used to treat diabetes type 1. How?
Replacement of the bodies insulin receptors to enable the blood
glucose to be taking up into cells
