Question: 1 of 50
ATI TEAS Version 7 -Science. Which of the following is the primary function of red blood cells?
- Carrying oxygen to other body cells
- Fighting infection in the body
- Responding to antigens
- Helping create blood clots
Question: 2 of 50
Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?
- Lysozymes
- Urea
- Sebum
- Water
Question: 3 of 50
Which of the following number of electrons are found in a boron atom with an atomic number of 5 and a mass number of 11? ATI TEAS Version 7 -Science
- 5
- 6
- 16
- 11
Question 4
Which of the following is the function of the nephron glomerulus?
- Allows $\text{K}^+$, $\text{Na}^+$ and $\text{Cl}^-$ to move out of the filtrate through both active and passive transport
- Reabsorbs water into the blood that increases blood pressure
- Produces a filtrate that is then processed by the renal tubule
- Responds to presence of ADH to control water reabsorption and produce a concentrated urine
Question 5
The valence of atoms in a group (column) in the periodic table
- decreases from top to bottom.
- increases from top to bottom.
- remains unchanged.
- changes unpredictably.
Question 1
S and O are in the same periodic group and share chemical properties, but H2S is a gas at room temperature, and H2O is a liquid. Which of the following is the main reason for this?
- H2S has stronger ionic bonds than H2O.
- H2O has stronger ionic bonds than H2S.
- H2O has stronger intermolecular bonds than H2S.
- H2S has stronger intermolecular bonds than H2O.
Question 2
Which of the following is correct regarding the pH scale?
- A substance with a pH of 3 is 10 times more alkaline than a substance with a pH of 4.
- A substance with a pH of 3 is two times more acidic than a substance with a pH of 4.
- A substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4.
- A substance with a pH of 3 is two times more alkaline than a substance with a pH of 4.
Question 3
Which of the following can digest an enzyme?
- Lipases
- Kinases
- Endonucleases
- Proteases
Question 4
A scientist wants to determine if solutes from a new drug formulation, taken orally, all enter the bloodstream. Which of the following samples would best show if this is the case?
- Plasma
- White blood cells
- Lymph
- Bone marrow
Question 5
A species of beetle is brown and lives only on brown trees. Sometimes, genetic mutation results in a few white beetles, but they are quickly eaten by birds. If all the trees in the forest were painted white, which of the following would be the most likely outcome?
- The brown beetles would turn white.
- The population of white beetles would increase.
- Brown beetles would become extinct from the population.
- The brown beetles would lay more white beetle eggs.
Question 6
Which of the following statements describes changes in the tubes that conduct air from the primary bronchi toward the bronchioles in the lung?
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- Epithelial layer gets thinner.
- Cartilage rings become larger.
- Cilia become more plentiful.
- Tube diameter increases.
Question 7
Which of the following describes a direct effect of histamine on blood vessels?
- Increases the amount of smooth muscle in blood vessels
- Decreases the amount of smooth muscle in blood vessels
- Causes blood vessels to constrict
- Causes blood vessels to dilate
Question 8
A student is comparing four different types of cells and observes that one contains many more mitochondria than the others. Which of the following conclusions should the student make?
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- The cells are fat cells.
- The cells are muscle cells.
- The cells are sebaceous gland cells.
- The cells are epidermal cells.
Question 9
Which of the following components of a nucleotide determines whether the nucleotide is considered a pyrimidine or purine?
- Ribose sugar
- Deoxyribose sugar
- Nitrogen base
- Phosphate
Question 10
Which of the following is generally expected to be true about birth rates in relation to death rates for a country with a growing population and high infant mortality?
- Birth rates lower than death rates
- Higher birth rates than death rates
- Birth rates equal to death rates
- Birth rates variable compared to death rates
Question 11
If a portion of a strand of DNA bases reads 5′ AGCTAGCGT 3′, what would the sequence of bases on the complementary strand read?
- 5′ TCGUTCGCU 3′
- 5′ UCGAUCGCA 3′
- 3′ AGCTAGCGT 5′
- 3′ TCGATCGCA 5′
Question 12
Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?
- Active transport using energy
- Conversion to carbon monoxide
- Passive transport using carrier proteins
- Diffusion down a concentration gradient
Question 13
Nucleotides that contain the sugar ribose are found in which of the following?
- RNA
- GMP
- ATP
- DNA
[Image comparing the chemical structure of ribose and deoxyribose sugars]
Question 14
In which of the following states will carbon dioxide occupy the least volume?
- Liquid
- Solid
- Plasma
- Gas
Question 15
Which of the following describes how the carbonic acid bicarbonate blood buffer system responds when an alkaline substance enters the stream?
- Hydrogen ions (H+) ions released from carbonic acid neutralizes hydroxide ions (OH-) to resist change in blood pH.
- Hydroxide ions (OH-) released from bicarbonate ions (HCO3-) neutralizes hydrogen ions (H+) to resist change in blood pH.
- Hydroxide ions (OH-) released from bicarbonate ions (HCO3-) neutralizes hydrogen ions (H+) to raise blood pH.
- Hydrogen ions (H+) ions released from carbonic acid neutralizes hydroxide ions (OH-) to raise blood pH.
Question 16
Which of the following digestive system structures releases sodium bicarbonate into the small intestine, resulting in a change in the pH of chyme from acidic to basic?
- Gallbladder
- Appendix
- Pancreas
- Liver. ATI TEAS Version 7 -Science
Question 17
Which of the following meiosis events produce genetically different daughter cells?
- Separation of sister chromatids
- Dissolution of nuclear membrane
- Condensation of chromosomes during prophase
- Crossing over of homologous chromosomes
Question 18
Achondroplasia, a form of dwarfism, is an autosomal dominant disorder. Homozygous achondroplasia is fatal within the first year of life. Which of the following is the genotype of an adult who has achondroplasia? ATI TEAS Version 7 -Science
- aa
- AA
- XAY
- Aa
Question 39 of 50
While playing basketball, a player injures her Achilles tendon. Which of the following types of tissue was injured?
- Muscle
- Epithelial
- Connective
- Nervous
Question 40 of 50
Which of the following structures is responsible for storing and releasing calcium ions that control the contraction-relaxation cycle of skeletal muscle?
- Troponin complex
- Sarcoplasmic reticulum
- Cellular cytoskeleton
- Myosin filaments
Question 43 of 50
A scientist wants to determine if solutes from a new drug formulation, taken orally, all enter the bloodstream. Which of the following samples would best show if this is the case?
- Lymph
- Bone marrow
- Plasma
- White blood cells
Question 44 of 50
Which of the following describes the nodes of Ranvier?
- Spaces between post and presynaptic neurons
- Gaps between Schwann cells wrapping the axon of a neuron
- Sodium gates at the axon terminals of a neuron
- Degraded myelin surrounding the axon of a neuron
Question 45 of 50
Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?
- Conversion to carbon monoxide
- Diffusion down a concentration gradient
- Passive transport using carrier proteins
- Active transport using energy
Question 50 of 50
In which of the following states will carbon dioxide occupy the least volume?
- Solid
- Plasma
- Liquid
- Gas
