A drug that blocks the action of a neurotransmitter is called an antagonist, which can decrease neurotransmitter activity by blocking receptors or affecting synthesis.
Explanation:A drug that blocks the action of the neurotransmitter is called an antagonist. Antagonists are drugs that decrease the activity of particular neurotransmitters by blocking their receptors or interfering with their synthesis. This action prevents the neurotransmitters from binding to the receptors, thus impeding their normal activity.
Psychoactive drugs that act as antagonists may be prescribed to correct specific neurotransmitter imbalances underlying a person's condition. For example, the poison curare is an antagonist for the neurotransmitter acetylcholine; it binds to dendrites, blocking neurotransmitter action and leading to severe consequences such as paralysis or death.
What stores energy serves as a steroid and makes up much of the cell membrane?
Lipids, specifically phospholipids, serve as the component of the cell membrane, store energy, and act as steroids in the body.
Explanation:The substance that stores energy, serves as a steroid, and makes up much of the cell membrane is lipids. Lipids are a type of organic molecule that is found in living organisms. They play a vital role in the structure and function of cells. In cell membranes, phospholipids create a barrier that protects the cell and regulates what enters and exits. In addition, lipids serve as a major source of stored energy in the body. Certain lipids also serve as steroids which regulate body functions.
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pizza that has been held for more than 4 hours at room temperature must be
A chemical that, in relatively small amounts, produces injury when it comes in contact with skin tissue is known as:
a. a corrosive
b. an explosive
c. a flammable liquid
d. a radioactive material
A chemical that, in small amounts, produces injury when it contacts skin is termed as a 'corrosive'. These include substances like sulfuric acid and sodium hydroxide. Always handle corrosives with caution to avoid injury.
Explanation:In the context of chemistry, a substance that can cause injury to skin tissue when even a small amount comes into contact with it would generally be referred to as a corrosive. Corrosives are substances that cause destruction to living tissue upon contact. Examples include substances like sulfuric acid, sodium hydroxide, and hydrochloric acid. It's important to remember that corrosive materials should always be handled with caution to prevent injury.
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Why is it important to control the variable in an experiment?
Researchers have difficulty ascertaining the relationship between testosterone and human aggression because
a. testosterone levels fluctuate dramatically in response to environmental stimuli.
b. neurotransmitters complicate matters by also affecting human behavior.
c. only males produce testosterone, and it cannot explain female aggression.
d. both a and b are correct.
A fine-grained soil deposited by wind is called _________, while a large region of sand is called a(n) _________.
A. erg; loess
B. loess; erg
C. desert; lichen
D. lichen; desert
Answer: B. loess; erg
Explanation:
Loess is a a type of soil which exhibit fine grained silt sized particles. It is formed by the accumulation of the wind blown dust. The 10% of the total land of earth is occupied by this type of soil. It consists of about 20-50 micrometer sized particles, 20% of the clay and balanced parts of sand and silts.
The erg can be define as the broad flat area of the desert which is occupied with the sandy soil. It exhibit little or no vegetation cover. The world largest erg is Sahara desert (African continent).
Some of the drugs used to treat hiv patients are competitive inhibitors of the hiv reverse transcriptase enzyme. unfortunately, the high mutation rate of hiv means that the virus rapidly acquires mutations with amino acid changes that make them resistant to these competitive inhibitors. where in the reverse transcriptase enzyme would such amino acid changes most likely occur in drug-resistant viruses?
D. A few drug-resistant viruses were present at the start of treatment and selective pressures increased their frequency.
if youre on usatestprep
Which of the following roles does an enzyme play when the body processes sucrose (table sugar) into glucose and fructose?
What best describes the temperature at which a solid turns into a liquid? Melting point Boiling point Electrical conductivity Thermal conductivity
Answer: Melting point
Explanation:
Melting point is the temperature at which solid state gets converted to liquid state.
[tex]H_2O(s)\rightarrow H_2O(l)[/tex]
Boiling point is the temperature at which vapor pressure of the liquid becomes equal to atmospheric pressure. It is the temperature at which liquid state gets converted to gaseous state.
[tex]H_2O(l)\rightarrow H_2O(g)[/tex]
Electrical conductivity is the property of a material that characterizes a material how easily it can conduct electricity.
Thermal conductivity is the property of a material that characterizes a material how easily it can conduct heat.
The temperature at which a solid turns into a liquid is called the melting point.
Explanation:The temperature at which a solid turns into a liquid is called the melting point. This is a characteristic property of a substance and represents the temperature at which the intermolecular forces holding the solid together are overcome and the particles start to move more freely.
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How does eye location best represent the relationship between structure and function? A It determines how much of the surrondings an organism can see B It determines how an organism responds to changes in the length of day C It indicates the maximum height an organism can reach D It affects how an organism interacts with others in its population
It indicates the maximum height an organism can reach
Biology 1 Course - McDougal Litell Biology Book: "Describe the similarities and differences among images from light microscopes, scanning electron microscopes, and transmission electron microscopes
Genetic disorders can result when sister chromatids fail to separate properly. during which phase is this problem most likely to occur?
__Answer__
D. Mitosis
Is your correct answer
Match each planet to the sentence that best describes it. A. Neptune It has seasons that last 20 years. B. Uranus It has the "Shepherd Moons." C. Saturn It is the largest gas giant. D. Jupiter It is sometimes farther from the sun than Pluto.
The answers would be:
Neptune - It is sometimes farther from the sun than Pluto.
Uranus - It has seasons that last 20 years
Saturn - It has the Shepherd Moons.
Jupiter - It is the largest gas giant
Here is more about the planets:
Neptune becomes farther from the sun than Pluto at times because of the orbit of Pluto. The orbit of Pluto is very elliptical, so at times it crosses the inside the orbit of Neptune. For example, from 1979 to 1999, Neptune was further from the Sun than Pluto.
Each season in Uranus lasts 20-21 years mainly because of its orientation. Unlike other planets, Uranus spins on its side and has a tilt of 93 degrees. A day in Uranus is about 17 Earth hours. During the winter-summer seasons, only one side of Uranus is exposed to the sun, and will not see daylight for 21 years.
Saturn has what we call Shepherd moons. They are called as such because they act like shepherds. They keep the dust and debris that form the rings of Saturn in place. This is also why the edges of the rings of Saturn are well-defined.
Lastly, Jupiter is the largest has giant in our Solar System and is also known as the largest planet in our solar system. It has a diameter of approximately, 143,000 km. Jupiter is made up of mostly Helium and Hydrogen. It has more than 50 moons.
How can carbon dioxide be considered a pollutant when it is a natural component of air?
a.
Carbon dioxide is considered a pollutant even though it is a natural component of air, because it is harmful to all living organisms.
b.
Carbon dioxide is considered a pollutant when larger concentrations than normal are present in the air as a result of human activity.
c.
Carbon dioxide is considered a pollutant, because it forms harmful chemicals when mixed with other pollutants in the air.
d.
Carbon dioxide cannot be considered a pollutant under any circumstances.
How does the respiratory system facilitate excretion of wastes?
Something caused by injury is termed iatrogenic. true false
Answer: True
Explanation:
The action or allergy which results in injury or illness caused by the activity of physician or a medical therapy can be termed as iatrogenic. This is common among patients of surgery. Thue this can be said that the given statement is true.
What type of map would most likely be used to show distribution of soybean farms in Illinois
Thematic map is the type of map that would most likely be used to show distribution of soybean farms in Illinois.
A thematic map is a type of map that is specially created to display a certain theme or topic associated with a particular geographic area. A thematic map gives special importance to a certain topic such as the average distribution of rainfall in a particular area. This map uses natural features like political boundaries, coastlines, rivers, and city locations as reference points to improve an individual’s understanding of the map's purpose and topic. Types of thematic map include; choropleth map, dot map, contour map, dasymetric map, and graduated symbols.
Polymers of polysaccharides are all synthesized from monomers by which process? *
A farm pond, usually dry during winter, has plenty of water and aquatic pond life during the summer. one summer, sarah returns to the family farm from college. observing the pond, she is fascinated by some six-legged organisms that can crawl about on submerged surfaces or, when disturbed, seemingly "jet" through the water. watching further, she is able to conclude that the "mystery organisms" are ambush predators, and their prey includes everything from insects to small fish and tadpoles. sarah observed that the mystery pond organisms never come up to the pond's surface. if she catches one of these organisms and observes closely, perhaps dissecting the organism, she should find
Answer:
I am confused
Explanation:
describe the location and function of the patron system
CAN SOMEONE READ OVER THIS EXPERIMENT FOR BIOLOGY AND TELL ME IF IT MAKES SENSE....?
For this experiment with both slides they were viewed at 400x total magnification with a slightly zoomed in on the coarse adjustment (however I totally forgot to write these down.) The onion root looked slightly like a brick wall with tiny dots inside of it (the nuclei). The cell walls were not clear however the nuclei was very clear...
Prophase: The chromosomes are condence and become visable for the very first time during this cycle. The fibers begin to form and the membrane begins to disintegrate.
Metaphase: The fibers attach to the center of each sisters chromosomes. They then align in the center of the cell. The nuclear membrane disingrates completely.
Anaphase: The center begins to split and the sister chromosomes then migrate towards the other sides of the cell.
Telophase: The chromosomes are now clustered on both ends of the cell. The membrane is now reforming itself. The cell plate begins to form between both daughter nuclei. This is then followed by something called cytokinesis.
I now changed my slides to the whitefish blastula.
Viewing at a 400x magnification the cell shape stayed pretty much similar and they still had a circle like shape to them. In one certain cell, the chromosomes that had lined up in the previous stage, had broken apart from their duplicates and had headed into a different centriole. The stage the cell is now in is the anaphase. When observing the whitefish for the stage of telophase, the shape stayed the same as well except for one cell which is currently in the telophase stage. The cell that is in the different stage looked like two different circle cells that joined one another. This stage the chromosomes reached the center and a nuclear membrane than began to form around each nuclei.
30% of the cells are in the prophase stage
5% of the cells are in the metaphase stage
5% of the cells are in the anaphase stage
5% of the cells are in the telophase stage
35% of the cells are in a stage of mitosis
In this conclusion I see that the hypothesis is right. It states that cells will go thru multiple stages of mitosis in their lifetime and they surely do! It also states that we (the viewer) would be able to see the different slides in one stage of mitosis. We were able to see this as well. The other thing I would like to state is that the slides used for the microscope were not large or very clear, but it was good enough to sort of have the idea of what is going on. I have learned that both of the slides are continuously reproducing and creating new and different cells and I was able to learn how to calculate the percentage of cells in the different stages.. I was able to learn a lot from this experiment and I was also able to learn more about a microscope then what I already knew. If I could change this experiment I really would not in any way. It was simple and fun to learn about the different cells and the different ways that they move and the ways they reproduce.
Answer:
Its good
Explanation:
Which of these hydrocarbons has a double bond in its carbon skeleton?
a. C3H8
b. C2H6
c. CH4
d. C2H4
(I don't know how to find out if their is a double bond based on the molecular formula)
Option d (C2H4) is the hydrocarbon that has a double bond in its carbon skeleton.
Explanation:In order to determine if a hydrocarbon has a double bond in its carbon skeleton, we can analyze its molecular formula. A hydrocarbon with a double bond will have the general formula CnH2n. In this case, the options are:
a. C3H8 - This does not follow the general formula for a hydrocarbon with a double bond.b. C2H6 - This does not follow the general formula for a hydrocarbon with a double bond.c. CH4 - This does not follow the general formula for a hydrocarbon with a double bond.d. C2H4 - This follows the general formula CnH2n and therefore has a double bond in its carbon skeleton.Based on the analysis, option d (C2H4) is the hydrocarbon that has a double bond in its carbon skeleton.
Salivary amylase is released in the mouth where it breaks down sugars. however, it is inactive once it reaches the stomach where ph is quite low. knowing the effect of ph on enzyme function, select all that describe why this happens.
The author indicates that caloric reduction extends the life of a mammalian cell by
How is an enzyme, Pepsin, able to break down dietary fat in the stomach? Please help me. I'm confused.
Which type of movement occurs in the intercarpal joint in the wrist? which type of movement occurs in the intercarpal joint in the wrist? opposition rotation gliding abduction/adduction?
The answer is gliding movement. The intercarpal joints are the articulations in the middle of the individual carpal bones. They are also known as plane synovial joints. This is one example of a gliding joint. These allow the bones to glide past one another in any course along the plane of the joint – up and down, left and right, and crosswise.
The movement that occurs in the intercarpal joint in the wrist is known as a gliding movement, allowing bones to slide over each other with little rotation. The correct option is: gliding
Type of Movement in the Intercarpal Joint in the Wrist
The movement that occurs in the intercarpal joint in the wrist is primarily a gliding movement. This type of movement is characterized by relatively flat bone surfaces sliding past each other, allowing for very little rotation or angular movement. Specifically, in the intercarpal joint, these gliding movements permit the bones to move slightly over one another, facilitating the complex motions necessary for the wrist's diverse range of activities.
Gliding joints, like those found in the wrist, enable the bones to flex and make small side-to-side motions. This action is essential for the fine motor skills required for tasks such as typing or playing a musical instrument.
The main homeostatically regulated compartment of the body is __________.
“lord randall” is an example of a ballad whose structure is
Final answer:
The structure of “Lord Randall” is a traditional ballad form, consisting of four-line stanzas or quatrains with an ABCB rhyme scheme and a rhythmic pattern of alternating iambic tetrameter and trimeter.
Explanation:
“Lord Randall” is an excellent example of a traditional Anglo-Scottish ballad. The ballad's structure typically employs four-line stanzas known as quatrains, with an ABCB rhyme scheme where the second and fourth lines rhyme.
The rhythmic composition often follows a pattern of alternating lines of eight and six syllables, which is characteristic of iambic tetrameter alternating with iambic trimeter.
This structure contributes to the musical quality of ballads, which were traditionally sung, often a cappella or with simple instrument accompaniment, and passed down orally from one generation to another to tell a story, usually containing a lesson or moral.
The repetitions and parallelisms in the dialogue of “Lord Randall” help to advance the narrative and are a hallmark feature of balladic storytelling.
List the levels of organization of the body from most to least complex
Tascha is on a medication that increases the pH of the stomach and makes it alkaline. What is the effect of this medication?
The medication hampers bile production.
Pepsin is unable to break down proteins.
Stomach cells secrete more mucus to combat it.
Lipase is unable to break down fats.
The medication hampers mechanical digestion.
The medication hampers bile production medication that increases the pH of the stomach and makes it alkaline. Thus, the correct option is A.
What is bile?The liver cells secrete bile, a greenish-yellow fluid made up of cholesterol, waste products, and bile salts, to serve two main purposes: to transport trash away. to digest fats by breaking them down.
Patients with obstructive jaundice or cholestasis have higher serum and liver bile acid levels, which may be harmful to hepatocytes due to their natural detergent properties. Therefore, some of the liver damage in cholestatic liver disorders may be attributed to elevated bile acid levels in hepatocytes.
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