WORTH 15 FOR 2 EASY QUESTIONS MULTIPLE CHOICE SECOND QUESTIONS EVEN EASIER THAN THE FIRST IM PRETTY SURE THE ANSWER IS C JUST CHECKING
Which of the following conditions would likely prevent the assembly and survival of new kinds of organic molecules on Earth today?
A. the presence of bacteria and other life forms
B. the presence of carbon dioxide
C. the supply of atoms that serve as raw material
D. the light and warmth from the sun
2.
Several different species make up a
A. family.
B. genus.
C. kingdom.
D. phylum.
2. Several Different Species Make up a
D. Phylum
The answer to question 1 is A - The presence of bacteria and other life forms
The answer to question 2 is D - Phylum
For a science class project, Sandy wants to test the effect of rap music on pea plant growth. She plays loud rap music 24 hours a day to a series of pea plants grown under light and watered daily. At the end of her experiment, she concludes that rap is conducive to plant growth. Sandy receives a low grade on this experiment from her teacher.
Why did Sandy’s teacher give a low grade for this experiment? What was the key problem with it? How could Sandy change her experiment to fix the problem? Rewrite the experiment so it will receive a better grade.
Answer:
Sandy's teacher give her a low grade because it was not an experiment.
The key problem was that Sandy did not had a control group.
The new experiment will have two groups (control and experimental). Each group will have the same amount of pea plants, and the pea plants will be watered with the same amount of water at the same time daily. Also, pea plants will receive the same amount of light. The only thing that will change between groups will be rap music. In the control group, there will no music played while loud rap music will be played 24 hrs a day in the experimental group. At the end of the experiment, all pea plants will be measured, and the measures will be compared between both groups.
Explanation:
Experimental investigations are performed to evaluate the effect of a specific variable. In order to measure this effect, you have to control other variables. In the experimental design, you need to have more than one group, but at least two (control and an experimental). The control group is the group from which you will compare, so it will not be exposed to the independent variable. The experimental group is the one that has to be exposed to the independent variable.
In this case, the independent variable is rap music, and the dependent variable is the amount of growth.
_____ are rod-shaped structures that contain all basic hereditary information.
More than _______ amino acids linked together is considered a protein.
Over 50 amino acids in a chain are considered a protein.
Answer:
More than 100 amino acids linked together is considered a protein.
Explanation:
The scientists categorize the links of amino acids based on the number of aminoacids:
Peptides: two to ten amino acids
Polypeptides: 11 to 100 amino acids
Proteins are 100 and more of 100 amino acids.
A protein is a chain of amino acids linked by peptide bonds. They are responsible of the biochemical reaction of cells.
Why is it often difficult to distinguish between the functions of the nervous and endocrine systems?
In cohort studies of the role of a suspected factor in the etiology of a disease, it is essential that
Why is evolution considered a theory and not a hypothesis?
Diffusion across a biological membrane is called
_______ is vesicle-aided transport out of the cell.
When egg whites are whipped they stiffen into a meringue. the change that occurs in the protein is called?
What is the term for acquiring an infection through mucosal tissues?
The element was poisonous to the first forms of life on earth until they evolved to take advantage of it by using cellular respiration. What is it? A. Hydrogen B. Nitrogen C. Oxygen D. Sulfur
Different mating habits cause two groups within a population to be less likely to mate with each other. as a result, reproductive isolation occurs between the two groups. what does this cause?
Reproductive isolation caused by different mating habits or physical separation leads to the divergence of two groups within a population into separate species through the process of speciation.
When different mating habits cause two groups within a population to be less likely to mate with each other, this leads to reproductive isolation. The outcome of reproductive isolation is often the divergence of the two groups into separate species, a process known as speciation. The driving forces behind this include natural selection, mutation, and genetic drift, which act over time to increase the genetic and phenotypic differences between the populations. As a result, even if individuals from the two groups are brought together, they may no longer be capable of producing viable or fertile offspring, thus cementing the reproductive isolation.
One example of this process involves habitat isolation, where a population of a species moves or is moved to a new habitat that does not overlap with the rest of the species. Over time, this separation can lead to speciation due to the lack of genetic exchange and the different selection pressures in the new environment.
Is the process by which two groups of organisms speciate in response to each other and at the same time?
Plants are important to the development of karst primarily because
Plants contribute to karst formation by facilitating rock dissolution, reducing erosion, influencing soil quality, and impacting the aquatic and atmospheric conditions that are essential to the development of karst topography.
Explanation:Importance of Plants in Karst DevelopmentPlants are important to the development of karst primarily because they impact chemical and physical attributes of their environment. Their root systems absorb nutrients and water, which facilitates the dissolution process of soluble rocks such as limestone, forming distinctive karst landscapes. Furthermore, plants help to stabilize the soil, reducing erosion and slowing down runoff, which is crucial in karst regions that are prone to the rapid drainage of surface water. The storage of excess water by plants during floods also contributes to the shaping of karst features.
In areas of traditional agriculture, such as the karst topography in Viñales Valley, Cuba, plants support the tobacco-growing industry by influencing the soil quality. The growth form and function of freshwater plants or macrophytes are determinants of aquatic plant function in aquatic ecosystems, which can be part of karst systems. Removal of carbon dioxide from the atmosphere by plants reduces the greenhouse effect, which also influences climatic factors relevant to karst formation.
Therefore, plants play a multifaceted role in the development of karst formations, not only through their physical impact on the landscape but also through their influence on the aquatic environment, soil, and atmospheric conditions.
Illustrate the position of the Earth, Moon, and Sun during a lunar eclipse. You may do so by typing the words or by drawing and labeling a picture.
What is a major benefit of schooling
Schooling helps to develop the division of labor by teaching students different skills and knowledge. This allows them to specialize in different areas and contribute to society in a variety of ways. Hence option C is correct.
For example, some people may become doctors, while others may become engineers or teachers. This division of labor allows society to function more efficiently and effectively.
The other options are not major benefits of schooling. Reproduction is a biological process that is not directly related to schooling.
Hydrodynamic efficiency and aerodynamic efficiency are terms that refer to the way in which objects move through water and air, respectively. These terms are not relevant to schooling.
Therefore, option C) division of labor is correct.
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A friend tells you he's having flashbacks and vivid nightmares of past events. In addition, he's feeling emotionally numb. You might be concerned that he needs to be checked for possible
A. PTSD.
B. DSM.
C. GAD.
D. OCD.
The correct answer is option A, that is, PTSD.
PTSD or post-traumatic stress disorder is the condition that illustrates an extreme and on-going emotional reaction, which occurs due to coming in contact with trauma or extreme stress. Clinically, such incidents comprise threatened or actual death, a threat to physical or psychological integrity, or any kind of serious physical injury.
PTSD is considered to be mainly an anxiety disorder and should not be confused with usual adjustment and grief post-traumatic events. The symptoms of PTSD comprises flashbacks, nightmares, insomnia, emotional detachment, irritability, loss of appetite, anxiety, and clinical depression.
Which of the following is NOT transported by vascular tissue?
1.Food
2.Water
3.Hormones
4.None Of The Above
Difference between qualitative and quantitative analysis in chemistry
Chemistry includes qualitative analysis, which is descriptive and non-numerical, and quantitative analysis, which involves specific measurements and units. Qualitative analysis provides general descriptions like color or texture, while quantitative analysis offers precise measurements, as seen in titrations and stoichiometry. Both types of analysis are essential in understanding the composition and behavior of substances.
Explanation:Qualitative analysis in chemistry refers to descriptions of the quality of something, which do not involve measurements or numbers. For example, qualitative properties can be descriptions such as sulfur is yellow, or that a solution turns blue when a penny is dissolved in it. On the other hand, quantitative analysis deals with numbers and units, providing a specific amount of something present in a substance or reaction. It encompasses counting or measuring certain aspects like the concentration of a solution, or the temperature at which sulfur melts, which is 115.21° Celsius.
Quantitative descriptions are critical in the field of chemistry as they help in accurately characterizing substances and in understanding reactions. For instance, the stoichiometry of chemical reactions is essential in quantitative chemical analysis methods such as titrations, where the volume of a titrant required to react completely with a sample is measured and used to calculate the concentration of the analyte. This quantitative approach allows for precise understanding and manipulation of chemical properties and interactions, a cornerstone of modern chemical science as it was for Dalton's atomic theory.
Although qualitative observations are fundamental to chemistry, there is a definitive need for quantitative measurements, especially in fields like solution chemistry. The precise quantitative methods of expressing solution concentration, such as molarity or percent composition, provide a deeper and more comprehensive understanding than qualitative terms like "concentrated" and "dilute".
The Big Bang theory was supported by the discovery of the
A- galaxies in the universe
B- temperature of the universe
C-gravitational forever between planets
D- red shift in electromagnetic spectrum
Answer:
Option D, red shift in electromagnetic spectrum
Explanation:
According to the Big Bang theory the universe is continuously expanding and all celestial bodies are moving away from each other. This fact was established when red shift affect was discovered. A red shift is basically a shift/increase in the wavelength of light released by any star over a period of time. The farther the star, the more is its wavelength red shifted.
This red shift is continuously increasing which means that the light emitting celestial objects are continuously moving away from each other.
Hence, option D is correct answer
Which of these rocks are formed by erosion and deposition? Select the two correct answers.
A. Basalt
B. Granite
C. Limestone
D. Sandstone
E. Marble
Answer:
Options (C) and (D)
Explanation:
During the process of weathering, the rocks are broken down into smaller and finer particles. These are commonly known as sediments, which are transported from one place and are deposited in another place. These sediments after being deposited are subject to compaction and lithification, resulting in the formation of sedimentary rocks. Some of the rocks formed by this process are sandstone, limestone, siltstone, mudstone, and dolostone.
In the given condition, Limestone and Sandstone are the two sedimentary rocks that are formed from the erosion and deposition of sediments.
Sandstone is dominated by sand particles and limestone are carbonate minerals dominated by calcite. They are often found to contain shells of various fossilized organisms.
Thus, the correct answers are options (C) and (D).
Lymphatic ________ are formed from the union of the largest collecting lymphatic vessels.
The sixth mass extinction event is likely being caused by ___
The most important characteristic that a drug must have to freely pass from the gastrointestinal tract into the circulation is to be
There are two answers – in salt form and fat soluble, depending on which way you look at it. According to Penn Foster's "How Drugs Work”, "No matter what form of the drug is swallowed, the drug must go into the free solution in the stomach or small intestine to pass from the GI tract into circulation. One factor that allows many drugs to go into free solution in the GI tract is that the drug is in a salt form within the commercial preparation. Salts of drugs dissolve readily in stomach liquid."
Also quoted from "How Drugs Work", "The portal
blood supply is joined to the small intestine by capillaries connecting to the
gastrointestinal mucosal cells. In some cases, it isn’t easy to get through
these mucosal cells because there’s a selective process that attempts to allow
only important substances through. In the case of drugs, it has been found that
the fat-soluble molecules (lipid-soluble drugs) are absorbed through these mucosal cells very well."
What are the van der walls forces
Final answer:
Van der Waals forces are intermolecular attractions that include dipole-dipole interactions and London dispersion forces, influencing the behavior of molecules in various states of matter.
Explanation:
Van der Waals forces are a type of intermolecular force that include dipole-dipole interactions and London dispersion forces. Dipole-dipole forces occur between polar molecules with permanent dipoles, whereas London dispersion forces arise from temporary dipoles caused by the movement of electrons within atoms or nonpolar molecules. Dispersion forces are present in all matter, and though they are the weakest type of van der Waals force, they can still significantly influence the physical properties of substances.
A heat wave that causes an organism to move to a cooler climate is an example of a(n)
a. adaptation
b. extinction
c. speciation
d. stimulus
Answer: stimulus
Explanation: I am a university graduate.
Harmful effects of __________ include oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, and deterioration of the stomach lining.
Final answer:
The harmful effects of pain relievers, such as oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, and deterioration of the stomach lining, highlight the significant but sometimes overlooked adverse effects of NSAIDs and Acetaminophen.
Explanation:
The question addresses the harmful effects of pain relievers, which can range from oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, to deterioration of the stomach lining. Nonsteroidal anti-inflammatory drugs (NSAIDs) are known to prevent blood clots and decrease inflammation but can cause gastrointestinal ulcers and bleeds, as well as kidney disease. Acetaminophen, an alternative with fewer side effects than aspirin, does not inhibit platelet aggregation but poses a severe risk of liver damage in cases of overdose.
Oversensitivity to light is a less discussed but significant adverse effect of some pain relievers.The increased risk of heart attack stroke and liver damage are alarming concerns associated with the prolonged or improper use of NSAIDs and Acetaminophen.Thinning of the blood and deterioration of the stomach lining highlight the systemic impact these medications can have beyond their targeted pain-relieving effects.Individuals must use these medications as directed and be aware of their potential side effects to minimize health risks.
What effect does a small number of wild dogs have on rabbit?
Final answer:
A small number of wild dogs would likely lead to an increase in the rabbit population due to reduced predation. Rabbit coloration is also influenced by natural selection, affecting survival based on environmental factors, such as snow for camouflage. Rabbit population dynamics are complex and also influenced by reproductive strategies and ecological balance.
Explanation:
The effect of a small number of wild dogs on rabbit populations is an example of predator-prey dynamics in an ecosystem. Wild dogs act as predators to rabbits, causing a direct impact on rabbit numbers. A smaller population of wild dogs might lead to an increase in the rabbit population, as fewer rabbits would fall prey to these predators. However, this effect can vary based on the presence of other predators, availability of food, and the habitat's carrying capacity for rabbits.
Changes in rabbit populations can also be driven by other environmental factors and adaptive traits. For example, rabbit coloration is an important factor for survival, as stated in the learning materials that white fur is advantageous for rabbits in snowy environments, in which it acts as camouflage against predators like foxes. On the other hand, darker fur makes rabbits more visible and increases predation risk. Therefore, natural selection can lead to changes in fur color frequency based on the environment.
Furthermore, the reproductive strategies of animals, such as the lack of parental care in species with high offspring numbers, as mentioned in example c, can also influence population dynamics and the ecological balance. In the case of rabbits, which typically have a high reproductive rate, even a small number of predators like wild dogs can have a significant effect by consuming a large number of juveniles, hence influencing the overall population stability.
What do you write on the chart if doctor states, “the pulses are fine” after checking the patient’s pulse near the …?
The radial artery is usually the place where pulse is being detected, and it is found in the human forearm. So the doctor must have checked the patient’s pulse at the radial artery of the patient. In documenting if the pulse is fine or within the normal range, the best way to right it in record is the radial pulse is +2.