Podcast
Questions and Answers
Experiments cannot validate hypotheses, only falsify them. The statement above can be restated in which of the following ways?
Experiments cannot validate hypotheses, only falsify them. The statement above can be restated in which of the following ways?
In which of the following regions of the body are the tibia and fibula?
In which of the following regions of the body are the tibia and fibula?
Which of the following functions does the myelin sheath perform for a nerve cell?
Which of the following functions does the myelin sheath perform for a nerve cell?
Which of the following occurs in an oxidation reaction?
Which of the following occurs in an oxidation reaction?
Signup and view all the answers
To accurately measure the density of a series of small irregular solids made of plastic, wood, fiberglass, and glass, a student will need which of the following laboratory tools?
To accurately measure the density of a series of small irregular solids made of plastic, wood, fiberglass, and glass, a student will need which of the following laboratory tools?
Signup and view all the answers
Emphysema caused by damage to alveoli from toxins and pollutants is likely to result in the body having difficulty performing which of the following actions?
Emphysema caused by damage to alveoli from toxins and pollutants is likely to result in the body having difficulty performing which of the following actions?
Signup and view all the answers
For which of the following reasons does a chloride ion have a negative charge?
For which of the following reasons does a chloride ion have a negative charge?
Signup and view all the answers
Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?
Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?
Signup and view all the answers
The triple point of a substance is the temperature and pressure at which the substance exists as which of the following?
The triple point of a substance is the temperature and pressure at which the substance exists as which of the following?
Signup and view all the answers
A patient goes to the doctor with a cold and sore throat and asks for antibiotics. The doctor refuses to prescribe antibiotics to the patient because the illness is caused by which of the following pathogens?
A patient goes to the doctor with a cold and sore throat and asks for antibiotics. The doctor refuses to prescribe antibiotics to the patient because the illness is caused by which of the following pathogens?
Signup and view all the answers
Which of the following is an efferent neuron that is responsible for releasing a neurotransmitter that stimulates a muscle cell to contract?
Which of the following is an efferent neuron that is responsible for releasing a neurotransmitter that stimulates a muscle cell to contract?
Signup and view all the answers
Which of the following structures is present in both prokaryotic and eukaryotic cells?
Which of the following structures is present in both prokaryotic and eukaryotic cells?
Signup and view all the answers
Which of the following actions allows for repolarization of a neuron?
Which of the following actions allows for repolarization of a neuron?
Signup and view all the answers
Which of the following structures is an exocrine gland?
Which of the following structures is an exocrine gland?
Signup and view all the answers
Which of the following is the function of a totipotent cell?
Which of the following is the function of a totipotent cell?
Signup and view all the answers
Which of the following classes of biological molecules includes enzymes?
Which of the following classes of biological molecules includes enzymes?
Signup and view all the answers
Which of the following substances is responsible for donating H+ ions to act as a buffer when blood pH rises?
Which of the following substances is responsible for donating H+ ions to act as a buffer when blood pH rises?
Signup and view all the answers
Parasitic worm infestation is hypothesized to be damaging to the host. However, scientists have recently discovered that worm infestation can relieve the effects of certain autoimmune disorders. In which of the following ways should the hypothesis be modified, given the new findings?
Parasitic worm infestation is hypothesized to be damaging to the host. However, scientists have recently discovered that worm infestation can relieve the effects of certain autoimmune disorders. In which of the following ways should the hypothesis be modified, given the new findings?
Signup and view all the answers
Which of the following best describes the result of using a catalyst in a chemical reaction?
Which of the following best describes the result of using a catalyst in a chemical reaction?
Signup and view all the answers
An individual suffers severe blunt trauma to the thoracic cavity. Which of the following organs are at greatest risk from this injury?
An individual suffers severe blunt trauma to the thoracic cavity. Which of the following organs are at greatest risk from this injury?
Signup and view all the answers
Which of the following is a component of the integumentary system that secretes pheromones?
Which of the following is a component of the integumentary system that secretes pheromones?
Signup and view all the answers
Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?
Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?
Signup and view all the answers
Lipids absorbed in the small intestine will first enter which of the following structures?
Lipids absorbed in the small intestine will first enter which of the following structures?
Signup and view all the answers
Which of the following immune system molecules creates holes in the cell membranes of their target cells in order to destroy the cell?
Which of the following immune system molecules creates holes in the cell membranes of their target cells in order to destroy the cell?
Signup and view all the answers
Which of the following properties does soap, an emulsifier, have that make it useful for washing dirt off one's hands with water?
Which of the following properties does soap, an emulsifier, have that make it useful for washing dirt off one's hands with water?
Signup and view all the answers
The covalent bonds between the monomers of an enzyme macromolecule are:
The covalent bonds between the monomers of an enzyme macromolecule are:
Signup and view all the answers
Which of the following is a protein present in blood plasma?
Which of the following is a protein present in blood plasma?
Signup and view all the answers
Which of the following describes a genetic mutation that results in uncontrolled division of a single cell within the body?
Which of the following describes a genetic mutation that results in uncontrolled division of a single cell within the body?
Signup and view all the answers
Which of the following tools can be used to measure the turbidity of a liquid by measuring the transmission of light through the sample?
Which of the following tools can be used to measure the turbidity of a liquid by measuring the transmission of light through the sample?
Signup and view all the answers
A researcher wants to gather data on the average wing strength of all birds found in the American Northwest. The researcher only has one small net, so all large birds were excluded from the study. The researcher's results were different than expected, but he believes his data include enough birds to estimate the strength of all birds. For which of the following reasons should this data be rejected?
A researcher wants to gather data on the average wing strength of all birds found in the American Northwest. The researcher only has one small net, so all large birds were excluded from the study. The researcher's results were different than expected, but he believes his data include enough birds to estimate the strength of all birds. For which of the following reasons should this data be rejected?
Signup and view all the answers
If a mother's __________ cell contains mutated DNA, this mutation can be passed to her offspring.
If a mother's __________ cell contains mutated DNA, this mutation can be passed to her offspring.
Signup and view all the answers
The mitochondrial inner membrane carries out the same function in cellular respiration as the ________ membrane of chloroplasts in photosynthesis.
The mitochondrial inner membrane carries out the same function in cellular respiration as the ________ membrane of chloroplasts in photosynthesis.
Signup and view all the answers
A study found two processes, Process A and Process B, to be correlated. Which of the following is true for these processes?
A study found two processes, Process A and Process B, to be correlated. Which of the following is true for these processes?
Signup and view all the answers
How many times stronger is the hydrogen-ion concentration of a pH 4 solution as compared with a pH 9 solution?
How many times stronger is the hydrogen-ion concentration of a pH 4 solution as compared with a pH 9 solution?
Signup and view all the answers
Which of the following summarizes a change that takes place as a solid turns to a liquid?
Which of the following summarizes a change that takes place as a solid turns to a liquid?
Signup and view all the answers
Genetic information describing the characteristics of an organism is found in which of the following?
Genetic information describing the characteristics of an organism is found in which of the following?
Signup and view all the answers
Which of the following organs filters excess solutes from the blood?
Which of the following organs filters excess solutes from the blood?
Signup and view all the answers
Which of the following is a function of bone?
Which of the following is a function of bone?
Signup and view all the answers
Which of the following ions binds to the troponin complex, initiating the contraction of a muscle?
Which of the following ions binds to the troponin complex, initiating the contraction of a muscle?
Signup and view all the answers
Study Notes
Hypotheses and Experiments
- Hypotheses cannot be proven; they are provisional until falsified.
- Validity of a hypothesis is maintained until evidence disproves it.
Human Body Regions
- Tibia and fibula located in the crural region.
Myelin Sheath Function
- Myelin sheath provides insulation for nerve cells, enhancing signal transmission.
Oxidation Reactions
- Oxidation involves the removal of electrons from a substance.
Measuring Density
- Use a graduated cylinder, water, and weighing balance to measure the density of small irregular solids.
Emphysema Effects
- Emphysema impairs the exchange of oxygen and carbon dioxide in the body.
Chloride Ion Charge
- A chloride ion has a negative charge because it gained an electron.
Excretion of Urea
- Urea is excreted by sweat glands as a byproduct of protein breakdown.
Triple Point Definition
- The triple point is where a substance exists simultaneously in solid, liquid, and gas phases.
Antibiotics and Pathogens
- Antibiotics are ineffective against viral infections, such as colds and sore throats.
Neuron Types
- Motor neurons are efferent neurons that stimulate muscle contraction through neurotransmitter release.
Cell Structures
- Cell membranes are present in both prokaryotic and eukaryotic cells, crucial for cell integrity.
Neuron Repolarization
- Repolarization occurs via the opening of potassium channels, allowing potassium to exit the neuron.
Exocrine Glands
- Parotid gland is an exocrine gland responsible for secreting saliva.
Totipotent Cells
- Totipotent cells can differentiate into any type of cell, making them essential in development.
Biological Molecules
- Enzymes are classified as proteins, playing key roles in biological reactions.
pH Regulation
- Carbonic acid acts as a buffer by donating H+ ions to maintain blood pH.
Worm Infestation Hypothesis
- Worm infestation may reduce the severity of certain autoimmune disorders.
Catalyst Function
- Catalysts speed up chemical reactions, reducing the time required for the reaction to occur.
Thoracic Injury Risks
- Heart and lungs are at greatest risk from severe trauma to the thoracic cavity.
Integumentary System
- Apocrine glands in the integumentary system secrete pheromones relevant to chemical signaling.
Carbon Dioxide Movement
- Carbon dioxide moves into alveoli primarily through diffusion down a concentration gradient.
Lipid Absorption
- Lipids absorbed in the small intestine enter the lacteal vessels first, aiding fat transport.
Immune System Molecules
- Perforins create holes in target cell membranes, leading to cell destruction.
Soap Properties
- Soap's dual polar and nonpolar nature facilitates the bonding of oil and water, aiding in cleaning.
Enzyme Bonds
- Enzyme macromolecules contain peptide bonds between monomers, crucial for structure.
Blood Plasma Proteins
- Fibrinogen is a key protein found in blood plasma, essential for blood clotting.
Genetic Mutations
- Cancer results from uncontrolled division of a single mutated cell.
Measuring Turbidity
- A spectrophotometer measures turbidity by analyzing light transmission through a liquid.
Biased Research Data
- Excluding large birds from a study creates bias, invalidating the results.
Mutated DNA Inheritance
- Mutated DNA in germ cells can be passed to the offspring, affecting future generations.
Mitochondrial and Chloroplast Function
- The mitochondrial inner membrane functions similarly to the thylakoid membrane in chloroplasts regarding energy conversion.
Correlation in Studies
- Correlation between two processes does not imply causation, necessitating careful interpretation of results.
pH Concentration Difference
- The hydrogen-ion concentration of a pH 4 solution is 100,000 times stronger than that of a pH 9 solution.
Solid to Liquid Change
- As a solid becomes a liquid, particles become less ordered, increasing molecular mobility.
Location of Genetic Information
- Genetic characteristics of an organism are stored in the nuclei of cells.
Kidney Function
- Kidneys filter excess solutes from the blood, playing a vital role in homeostasis.
Bone Functions
- Bones store minerals, contributing to the body's mineral balance.
Muscle Contraction Initiation
- Calcium ions bind to the troponin complex, triggering muscle contraction mechanisms.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Prepare for the TEAS 7 exam with this science practice test focusing on hypothesis validation and experimentation. Test your knowledge of scientific principles and reasoning with these flashcards. Enhance your understanding of key concepts to excel in the exam.
