a scientist compares data from her control group and experiment group what scientific method is she performing
a) forming a hypothesis
b) developing trends
c) analyzing data
d) observing an experiment
Which stage of stress includes the fight-or-flight response answers?
The answer is "Alarm" I just did this test I'm 100% sure it's correct.
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Structures found within a eukaryotic cell and performing specific tasks are collectively termed _________
Which of the following statements is FALSE?
a. A disturbance in an ecosystem is an event that changes the availability of resources in that ecosystem.
b. Disturbances are by definition harmful and undesirable for ecosystems.
c. Disturbances can be natural or man-made.
d. Disturbances can cause changes in the organisms in an ecosystem.
The statement “disturbance is by definition harmful and undesirable for the ecosystem.” is false.
Further explanation:
An ecosystem is the set of both the biotic as well as the abiotic components that interact with each other to sustain themselves. The ecosystem is made up of abiotic components like; sunlight, climate, water, minerals and soil. The biotic components of an ecosystem include plants, animals and microorganisms.
Any disturbance in the ecosystem can cause changes in either the biotic component or the abiotic components or both the components. The disturbances can be either natural or humanmade. The natural disturbances may include; drought, floods, volcanic eruptions and forest fires. The manmade disturbances may include; industrialization, urbanization and building up of dams.
It is not appropriate to say that all the disturbances in the ecosystem are harmful. This is because disturbances such as drought or floods can sometimes eradicate some of the harmful organisms that dwell in the ecosystem. Forest fires can also lead to the burning of such plants, which prohibited the growth of other plants or make the land barren.
Learn more:
1. Learn more about abiotic factor
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2. Learn more about cellular respiration https://brainly.com/question/8900186
3. Learn more about primary and secondary succession https://brainly.com/question/4723069
Answer Details:
Grade: High School
Subject: Biology
Chapter: Ecosystem
Keywords:
Ecosystem, biotic components, abiotic components, drought, floods, volcanic eruptions and forest fires, industrialization, urbanization, barren land.
Which statement correctly explains the molecular structure of water? One oxygen and two hydrogen atoms are joined by a covalent bond. One hydrogen and two oxygen atoms are joined by a covalent bond. One oxygen and two hydrogen atoms are joined by an ionic bond. NextReset
Two brain structures the size of matchsticks that rest above the nasal cavities are the
What does the letter q stand for in the Hardy-Weinberg equation
Answer:
Frequency of recessive allele.
Explanation:
The Hardy-Weinberg equation is represented as below:
p2 + 2 pq + q2 = 1
Here, p is the frequency of dominant allele while q denotes the frequency of the recessive allele. The "p2" refers to the frequency of dominant genotype in the population while "q2" is the frequency of recessive genotype in the population. Likewise, "2pq" represents the frequency of heterozygous genotypes in the population.
Which property of connective tissue is fundamental to its function of binding tissues and organs?
The primary property of connective tissue enabling it to bind tissues and organs is its extracellular matrix, providing the tissue flexibility and tensile strength.
Explanation:The property of connective tissue that is fundamental to its function of binding tissues and organs is its extracellular matrix. This matrix is made up of an array of proteins and other substances secreted by the cells of the connective tissue itself. This extracellular matrix is often dense and fibrous, enabling connective tissue to act like a 'glue' within the body, holding different tissues and organs in place. For example, ligaments and tendons, which are types of connective tissue, bind bones to muscles. Furthermore, the flexibility and tensile strength attributed to this extracellular matrix allows connective tissues to bear weight, withstand great tension and endure abuse that other body tissues could not.
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The property of connective tissue that enables it to bind tissues and organs is its extracellular matrix. This complex, highly varied matrix, owing to its composition, serves multiple roles in supporting, separating, and anchoring organs and other tissues, defense, insulation, nutrient diffusion, and more.
Explanation:The property of connective tissue primarily responsible for its function of binding tissues and organs is its extracellular matrix. This matrix includes a large number of extracellular materials produced by cells within it. It is typically comprised of cells, ample amounts of amorphous ground substance, and protein fibers. The ground substance, often crossed by protein fibers, can be a fluid or a mineralized solid, based on the functioning needs of the tissue.
Essentially, the connective tissue's matrix supports, separates, and binds organs and other tissues, buffers shock, permits nutrient diffusion, and even plays roles in defense, thermal insulation, and transport of fluid, nutrients, and waste.
Different forms of connective tissue, such as loose connective tissue and supportive connective tissue like cartilage and bone, serve varied functions based on the characteristics of their ground substance and types of fibers in their matrix.
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Ecologists are particularly concerned about the impact of human activities on which four processes of the biosphere
The planning and execution of movements is a function performed by the association cortex within the _______ cortical lobe.
Final answer:
The frontal cortical lobe, specifically the association cortex and the premotor area, play key roles in planning and executing movements. The primary motor cortex, situated in the precentral gyrus, is responsible for the execution of these movements.
Explanation:
The planning and execution of movements is a critical function performed by the association cortex within the frontal cortical lobe. This cortical area entails several critical regions, such as the premotor area, which is responsible for planning movements that will be carried out by the primary motor cortex. Once the movement plan has been created, the execution phase follows with the aid of the primary motor cortex, located in the precentral gyrus of the frontal lobe.
The prefrontal cortex is engaged in higher-level cognitive functions, such as judgment, abstract reasoning, and working memory, which all contribute to the preparation for movement. This illustrates the complex interplay between different components of the brain when it comes to functions that appear seamlessly integrated in our daily actions.
___________ is igneous activity that occurs __________ plate margins.
Intraplate volcanism is igneous activity that occurs away from plate margins.
Intraplate volcanism is the volcanic activity that takes place within a tectonic plate far away from plate margins/ boundaries. Volcanic activity usually takes place at plate margins but some exceptionally active ones (such as intraplate volcanism) also occur within a plate. Most intraplate volcanism are thought to occur due to large hot mantle plumes that rise gradually through the mantle by convection.
"what is the difference between a monosaccharide, an oligosaccharide, and a polysaccharide?"
Cells from which domain(s) of life are separated from their environment by a plasma membrane? select all correct choices
One staff member in a psychiatric unit says to the nurse, why are we carrying out suicide precautions for someone who is dying? it is pointless and a waste of time. the nurse should:
The golgi complex is composed of about six flattened membranous sacs called
How are elements and compounds similar? how do they diffe?
The theory of punctuated equilibrium is based on the observation that
a. brief periods of intense speciation alternate with long periods of stasis
b. new species appear in the fossil record alongside their unchanged ancestors
c. evolutionary change does not seem to occur at a constant pace
d. all of the above
The theory of punctuated equilibrium is based on the observation that evolutionary change occurs in patterns of long periods of stability with brief, intense bursts of speciation, leading to new species alongside unchanged ancestors and indicating that evolution does not have a constant pace.
The theory of punctuated equilibrium is based on the observation that evolutionary change tends to occur in a pattern characterized by long periods of stability, interspersed with much shorter periods during which many species become extinct and new species emerge. This model of evolution suggests that speciation tends to occur in rapid bursts, often due to significant changes in the environment, followed by long periods of little to no evolutionary change. Witnessing this phenomenon in the fossil record, where periods of stasis are interrupted by sudden and significant evolutionary changes in species, supports this theory.
Considering the provided statements, the correct answer is d. all of the above. This encompasses the observation that brief periods of intense speciation alternate with long periods of stasis, new species appear in the fossil record alongside their unchanged ancestors, and evolutionary change does not seem to occur at a constant pace.
Studying material culture is important to anthropologists because:
It is important for anthropologists to have studying material culture because the objects that are being created and are being shaped by human beings are for them, has meaning behind it and has practices in which involves with the cultures.
state the dimensions, in inches, of the international standard for a litter-size piece of paper?
The A4 paper size, part of the international standard, measures approximately 8.27 inches by 11.69 inches and maintains a ratio of 1:
between its width and height. Cutting an A4 sheet in half results in two A-5 sheets, each with the same proportions due to the unique aspect ratio of the A series.
The international standard for a letter-size piece of paper in Europe is known as the A4 size. The dimensions of the A4 paper size are 210mm by 297mm, which can be approximately converted to 8.27 inches by 11.69 inches. This format is defined by the ISO 216 standard and is used widely across the globe, outside of North America. The A4 paper size has a unique aspect ratio—the width and height have a ratio of 1:
, which is the square root of 2. This ratio has special properties, such as maintaining the same proportions when an A-4 sheet is cut in half to produce two A5 sheets. The entire A series of paper sizes follow these proportions, creating a consistent, scalable format for documents and printouts.
An A-5 sheet is exactly half the size of an A4 sheet in terms of area, and it is also half as large linearly in one dimension (since it is obtained by cutting the A4 sheet in half). To transition from one size in the A series to another, you either double or halve one of the dimensions, maintaining the aspect ratio. The A0 paper size starts the series with an area of one square meter, leading down to the smaller sizes of the series, including A-1, A-2, A-3, A4, and so on.
When scientists look for explanations for specific observations what do they assume about nature?
A neuropsychologist describes a patient who is experiencing difficulty with coordination and balance. the patient's brain damage is probably localized in her:
True or false: plants do not need cellular respiration because they carry out photosynthesis
A bison and an elk live in the same habitat and feed on the same grasses does this mean that the competitive exclusion principle does not apply? explain
The competitive exclusion principle states that no two species can occupy the same niche for long. Bison and elk coexisting could be due to resource richness or niche differentiation. Over time, competitive exclusion may still impact their coexistence.
In the case of a bison and an elk living in the same habitat and feeding on the same grasses:
It does not necessarily mean the competitive exclusion principle does not apply.They could avoid direct competition by utilizing the habitat in slightly different ways, such as feeding at different times or on slightly different plants.There might be enough resources to support both species without direct competition, especially if the habitat is rich in resources.Over time, one species might still outcompete the other if the resources become limited or if one is better adapted to the environment.Therefore, while they coexist now, the competitive exclusion principle could still affect their long-term coexistence depending on various factors.
What is the chemical formula of the first carbohydrate molecule shown/?
Which of the following was used in the 1940s to analyze amino acids that make up proteins? A. Genetic engineering. B. Chromatography. C. Radioactive tracers. D. X-ray diffraction
The hemoglobin levels of a 30-year-old female client are measured at 8 mg/dl (80 g/l). which integumentary findings can be noticed in this client? pallor clubbing café au lait spots brittle nails koilonychia
Answer:
The correct answers are- pallor, brittle nails and koilonychia.
Explanation:
Hemoglobin is an iron-containing protein (metalloprotein) that present in the red blood cells. It carries oxygen molecules from the lungs or gills and transports it to the rest of the body. Hemoglobin level must be in the range of 11 to 18 loosely.
Lady can develop following integumentary conditions are arise due to less oxygen to the rest of the body and cells-
Pallor is a condition of yellow skin due to the absence of healthy RBC in blood cells because of the low hemoglobin level.
Brittle nails are the anemic condition arise due to low oxygen and less healthy RBC in blood.
Koilonchia is also known as spoon-shaped nails is also a condition arising due to low hemoglobin level or iron deficiency in the blood.
Thus, the correct answers are- pallor, brittle nails and koilonychia.
Four students are asked to list characteristics of RNA in a table as part of an assignment. Which student listed the characteristics correctly?
A) student 1
B) student 2
C) student 3
D) student 4
Student Deoxyribose Ribose Thymine Uracil
Student 1 No Yes No Yes
Student 2 Yes No No Yes
Student 3 No Yes Yes Yes
Student 4 Yes No Yes No
Answer:
3
Explanation:
what types of materials are expelled from cells during exocytosis?
Exocytosis is a process used by cells to expel waste products, toxins, proteins, and lipids that cannot cross the cell membrane. For example, pancreatic cells release insulin into the bloodstream through exocytosis. The molecules to be expelled are packaged into vesicles inside the cell, which then move to and fuse with the cell membrane.
Explanation:The process of exocytosis is used by cells to expel various types of materials. These typically include molecules like proteins and lipids that cannot cross the cell membrane. Additionally, cells expel waste products and toxins via exocytosis.
For example, your pancreatic cells release insulin into your bloodstream through the process of exocytosis. This process involves the insulin molecule being packaged into a vesicle, a small membrane-bound sac inside the cell, which is then transported to the cell membrane, merges with it, and releases the insulin outside the cell.
Some of the vesicles involved in exocytosis are formed in the Golgi apparatus, a part of the cell involved in processing and packaging molecules. After being filled with the molecules to be secreted, these vesicles then move to and fuse with the cell membrane, releasing their contents outside the cell.
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A nurse is instructing a client on how to assess himself for herpes simplex lesions by their configuration. which configuration should the nurse tell the client to look for?
This produces a waxy covering that protects the plant from insects, bacteria, and fungi.
The cuticle, composed of cutin, constitutes a vital defense mechanism in plants, repelling water and providing protection from biotic and abiotic stress factors.
The protective waxy covering that shields plants from insects, bacteria, and fungi is known as the cuticle. This cuticle is made up of a substance called cutin, which effectively minimizes water loss through transpiration. The leaf's cuticle functions to reduce the rate of water loss from the plant surface. In addition to this waxy layer, some plant leaves have small hairs called trichomes that contribute further to defense by restricting insect movement and storing substances that are toxic or unpalatable to herbivores.
Plants employ this first line of defense to maintain an intact and impenetrable barrier, often enhanced by multiple layers of the epidermis in extreme environmental conditions. This way, the cuticle and bark work together to protect plants against various pathogens and environmental stressors, ensuring their survival and health.