ATI TEAS 7 SCIENCE EXAM ALL VERSIONS COMBINED_Updated

ATI TEAS 7 Science Notes

Central Nervous System and Hormonal Regulation

  1. Question: Which of the following parts of the central nervous system releases chemicals that regulate the pituitary gland?
    • Hypothalamus
    • Cerebellum
    • Thalamus
    • Spinal Cord
    • Answer: The hypothalamus is responsible for releasing hormones that regulate the pituitary gland, playing a key role in hormone release and bodily functions.

Muscle Physiology

  1. Question: The shortening of a sarcomere in skeletal muscle is directly due to the interaction of which of the following?
    • Acetylcholine and acetylcholinesterase
    • Pepsin and pepsinogen
    • Myosin and actin
    • Dynein and kinesin
    • Answer: The interaction of myosin and actin filaments leads to the contraction of skeletal muscles through the sliding filament theory.

Genetics and Inheritance

  1. Question: Mutations in which of the following types of cells can be inherited by offspring?
    • Ovarian
    • Endocrine
    • Neural
    • Muscle
    • Answer: Mutations in gametes (ova) can be passed onto offspring.

Tendon Functions

  1. Question: Which of the following describes the function of tendons?
    • Tendons attach skeletal muscle to bone
    • Tendons attach two bones
    • Tendons attach bones to ligaments
    • Tendons attach skeletal muscles to ligaments
    • Answer: Tendons are connective tissues that connect muscle to bone, facilitating movement.

Excretion and Metabolic Waste

  1. Question: Which of the following substances is excreted by sweat glands in response to the breakdown of protein and the formation of ammonia?
    • Lysozymes
    • Water
    • Urea
    • Sebum
    • Answer: Urea is a byproduct of protein metabolism and is excreted through sweat.

Metabolic Process Definitions

  1. Question: Which of the following terms describes the removal of metabolic waste from the body?
    • Excretion
    • Catabolism
    • Anabolism
    • Secretion
    • Answer: Excretion refers to the process of eliminating waste products from the body.

Osmosis and Solutions

  1. Question: A cell is placed in a hypertonic solution. Which of the following describes the resulting osmosis?
    • There is no flow of water
    • The net flow of water into and out of the cell is zero
    • There is a net flow of water out of the cell
    • There is a net flow of water into the cell
    • Answer: In a hypertonic solution, water moves out of the cell, leading to cell shrinkage.

Active Transport Mechanisms

  1. Question: Which of the following is an example of active transport?
    • Aquaporins in kidney cells that help concentrate urine
    • Movement of substances from an area of high concentration to an area of low concentration
    • Movement of sodium and potassium across the cell membrane against the concentration gradient
    • Loss of water from a cell in a hypertonic solution
    • Answer: Active transport requires energy to move ions against their concentration gradient.

Cardiovascular System Functionality

  1. Question: Which of the following vessels is responsible for carrying blood from the upper body to the right atrium of the heart?
    • Pulmonary veins
    • Aorta
    • Pulmonary arteries
    • Superior vena cava
    • Answer: The superior vena cava brings deoxygenated blood from the upper body to the right atrium.

Carbohydrate Composition

  1. Question: Carbohydrates are composed of which of the following?
    • Nucleic acids
    • Monosaccharides
    • Isoprenoids
    • Amino acids
    • Answer: Carbohydrates are basic units made of monosaccharide units.

Carbonic Acid-Bicarbonate Buffer System

  1. Equation: The carbonic acid-bicarbonate buffer system of the blood is summarized as: $CO_2 + H_2O ightleftharpoons H_2CO_3 ightleftharpoons HCO_3^- + H^+$
    • Question: Which equation shows the reaction when excessive H+ ions are present?
      • $H_2CO_3
        ightarrow CO_2 + H_2O$
      • $HCO_3^- + H^+
        ightarrow H_2CO_3$
      • $CO_2 + H_2O
        ightarrow H_2CO_3$
      • $H_2CO_3
        ightarrow HCO_3^- + H^+$
      • Answer: The appropriate reaction when H+ ions are excessive is: $HCO_3^- + H^+
        ightarrow H_2CO_3$.

Photosynthesis Experiment

  1. A student is investigating the importance of wavelengths for photosynthesis. Experimental setup includes:
    • 3 Arabidopsis plants exposed to UV light
    • 3 Arabidopsis plants exposed to IR light
    • 3 Arabidopsis plants exposed to white light
    • Findings: IR-treated plants scorched, UV-treated wilted, white light plants thrived.
    • Question: Which statement is likely correct?
      • Wavelength of lights the only variable that has been changed between groups
      • The wavelength of light does not affect photosynthesis
      • Infrared light contains more energy than the other wavelengths
      • Three plants do not produce sufficient replications to draw a conclusion.

Correlational Study Weakness

  1. Question: Which of the following is a weakness of a correlational study?
    • Cannot be replicated
    • Cannot determine causation
    • Inability to control independent variables
    • Too many variables to control
    • Answer: Correlational studies only imply relationships and do not establish direct cause-and-effect.

Vasectomy and Infertility

  1. Question: A vasectomy blocks sperm flow. Why does it lead to infertility?
    • The vasectomy blocks the movement of sperm from the prostate gland to the bulbourethral gland
    • The vasectomy blocks the movement of sperm from the epididymis into urethra
    • The vasectomy blocks the movement of sperm from the ejaculatory duct into the bulbourethral gland
    • The vasectomy blocks the movement of sperm from a testis into the epididymis
    • Answer: The vasectomy disrupts the normal passage of sperm into the urethra preventing fertilization.

Lifelong Immunity

  1. Question: Lifelong protection after exposure to a virus such as chickenpox is due to which of the following types of immunity?
    • Nonspecific
    • Innate
    • Transplantation
    • Active
    • Answer: Active immunity is achieved through exposure to the pathogen, generating long-term resistance.

States of Matter and Volume

  1. Question: An equal mass of which of the following states of matter could completely fill either a 100 ml or 500 ml container?
    • Gas
    • Solid
    • Mixture
    • Liquid
    • Answer: Gases occupy the volume and shape of their containers, unlike solids and liquids.

Isotope Properties

  1. Question: Carbon has an atomic number of 6. Which of the following is true about isotope C-12?
    • C-12 possesses 7 neutrons and 5 electrons in its nucleus
    • C-12 possesses 6 protons and 6 electrons in its nucleus
    • C-12 possesses 6 neutrons and 6 protons in its nucleus
    • C-12 possesses 7 protons and 5 neutrons in its nucleus.
    • Answer: Isotope C-12 has 6 protons and 6 neutrons.

Tissue Damage and Paralysis

  1. Question: Permanent damage to which of the following types of tissues in the spinal cord will cause paralysis?
    • Nervous tissue
    • Muscle tissue
    • Bone tissue
    • Connective tissue
    • Answer: Injury to nervous tissue in the spinal cord can disrupt motor control leading to paralysis.

COVID-19 Vaccine Insights

  1. Question: Which of the following statements about COVID-19 vaccine initiation is supported by provided data?
    • The highest daily rate occurred in December
    • The cumulative total for January is around 13 million
    • The cumulative total fell by 2 million between January 9 and January 10
    • The daily rate for December 29 and January 5 are similar.

Volume Comparison of Cubes

  1. Question: How many times larger is the volume of a cube that is 4 mm on all sides compared to a cube that is 2 mm on all sides?
    • Answer: 8 times larger ($ rac{4^3}{2^3}= rac{64}{8}=8$).

Blood Flow Pathway

  1. Question: Identify the pathway of blood through the components of the cardiovascular system.
    • Correct Order: Right atrium → Right ventricle → Pulmonary valve → Pulmonary artery → Lungs

Development from Embryonic Tissues

  1. Question: Which of the following body systems develop from the same origin tissue as lungs?
    • Genitourinary system
    • Musculoskeletal system
    • Neuromuscular system
    • Gastrointestinal

Hypothesis Formulation

  1. Question: A scientist predicts that germinating beans will use more oxygen than non-germinating beans. What is this prediction called?
    • A conclusion
    • An observation
    • A hypothesis
    • Data collection

Carbon Dioxide Movement

  1. Question: Which process causes the most carbon dioxide from the blood to move into alveoli?
    • Active transport using energy
    • Diffusion down a concentration gradient
    • Conversion to carbon monoxide
    • Passive transport using carrier proteins

Water Properties

  1. Question: Which of the following is a property of water?
    • Water is made up of one molecule of hydrogen and two molecules of oxygen
    • Water dissolves polar ionic compounds
    • Water requires less heat than ethanol to raise its temperature
    • Solid water is denser than liquid water

Atomic Radius Comparison

  1. Question: Which of the following elements has the smallest atomic radius?
    • Ge
    • C
    • Sn
    • Si

Pancreatic Secretions

  1. Question: Which of the following pancreatic secretions digests starch into disaccharides?
    • Trypsin
    • Chymotrypsin
    • Amylase
    • Lipase

Mass Units

  1. Question: Which of the following units is used to indicate mass?
    • cm3
    • Irm
    • mg
    • ml

Histone Association

  1. Question: Histones are proteins associated with which of the following?
    • Blood
    • Sperm cells
    • Hair follicles
    • DNA

Ionic Salt Formulation

  1. Question: When an ionic salt is dissolved in water, the ions CO3 and K+ are formed. What is the formula for the salt?
    • KCO3
    • K2CO3
    • K3CO2
    • K(CO3)2

Presentation of Data

  1. Question: A researcher is gathering data on disease and medication effectiveness. Which type of graph is best for presentation?
    • Line graph
    • Pie chart
    • Bar graph
    • Flow chart

Properties of Adhesion and Cohesion

  1. Question: Which of the following describes why water has a concave meniscus when poured into a beaker?
    • Glass has a higher density than water
    • Water has a higher density than glass
    • The adhesive forces with the glass are greater than the cohesive forces
    • The cohesive forces with the glass are greater than the adhesive forces.

Fox Coloration Change

  1. Question: Which statement describes the change in coat coloring of an Arctic fox?
    • The fox’s phenotype changes, but the genotype does not
    • The fox’s genotype changes, but the phenotype does not
    • Both the phenotype and genotype of the fox change
    • Neither the phenotype nor the genotype of the fox change.

Adaptive Immunity

  1. Question: Which of the following best describes adaptive immunity?
    • The body’s barrier defenses, such as mucous membranes and secretions
    • The initiation of internal defenses, such as phagocytes and natural killer cells
    • The initiation of the inflammatory response
    • A response to specific traits of specific pathogens.

DNA Complementary Strand

35