A hypothesis outlines your expectations for the results of your investigation. It is a speculative, untested response to your research question. You might need to develop a number of hypotheses for some research projects that speak to various facets of your research issue.
A hypothesis should be founded on accepted ideas and body of information; it shouldn't just be a wild guess. Additionally, it must be testable so that you can use scientific research techniques to either confirm or disprove it (such as experiments, observations and statistical analysis of data). A relationship between two or more variables is proposed by a hypothesis. Anything the researcher modifies or controls is referred to as an independent variable. An observation or measurement made by the researcher is a dependent variable.
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The
of a microscope refers to the ability to distinguish clearly between two
adjacent, but distinct, objects.
Answer:
resolution
Explanation:
Resolution is the ability of the lenses in the microscope to clearly distinguish between two adjacent objects as distinct and separate.
A compound light microscope has a maximum resolution of 0.2 µm, which means it can clearly distinguish between two adjacent, but distinct objects. Any objects closer than 0.2µm will be seen as 1 object.
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The effects of different conditions on carrying capacity
if abiotic or biotic factors change, the carrying capacity changes as well, natural disasters can destroy resources in an ecosystem. if resources are destroyed, the ecosystem will not be able to support a large population. this causes capacity to decrease.
(Q007) This figure shows
2
Click to view larger image.
O a right-lateral, strike-slip fault.
O a fault with a northwest strike.
O that a dip-slip motion has occurred along the fault trace.
O a fault produced by stretching.
The answer is A.
A right lateral strike slip fault. Now explaining one by one. So the first option tells about the dip slip motion of fault that is the motion along the dip direction of the fault. In this case there is no dip slip component as the blocks have moved horizontally along strike direction.
Fault produced by stretching are known as normal fault. Normal fault includes foot wall and hanging wall. But here the fault is vertical so there are no foot wall and hanging wall distinguishable.
The fault strikes NE -SW. So option B is not correct.
Now Only the option A. Strike slip fault is a vertical or nearly vertical fault with net displacement along the strike direction. The blocks have moved horizontally. If we refer to the man standing on one block ,then his front block has moved towards his right hand side. So the fault is known as Right lateral strike slip fault.
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Kelp is a representative of the
Answer: Seaweed.
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Which statement best represents how structure relates to function?
O Parrots typically lay clutches of 2-4 eggs per year.
O Longer legs and different hip bones let modern humans walk upright.
O Hummingbird feathers come in a wide variety of iridescent colors.
O When a sandhill crane finds a mate, it bonds for life.
The statement that best represents how structure relates to function is as follows: longer legs and different hip bones let modern humans walk upright.
What is structure and function?The structure of a biological organism refers to the arrangement or organization of parts to form an organ, system, or living thing.
The structure of an organism determines the adaptation and survival of that organism in its natural environment because these structures perform functions that are germane to its survival.
Some common examples of structures in living organisms and their functions are as follows:
Radula in snails - for feedingHorns - for protection against intrudersClaws - for holding on to preyTherefore, the statement that best represents how structure relates to function is as follows: longer legs and different hip bones let modern humans walk upright.
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Question 2:
Identify the revision(s) of the following unedited sentence that rectify the faulty comparison:
Rats that experienced psychological stress were found to have high levels of RCAN1 than control rats
RCAN1 levels were high in rats that experienced psychological stress than control rats.
Rats that experienced psychological stress were found to have higher levels of RCAN1 than did control rats.
Levels of RCAN1 were higher in rats that experienced psychological stress than control rats.
RCAN1 levels were higher in rats that experienced psychological stress than in control rats.
An early precursor to the development of neurofibrillary tangles and the neurodegeneration seen in Alzheimer disease, hyperphosphorylated tau protein (AT8 antibody) accumulates in transgenic mice overexpressing the RCAN1-1L protein.
Rats subjected to stress caused by immobility or isolation have higher levels in their hippocampus. Stress was applied to adult rats. Male Wistar rats that are eleven weeks old are cared for and worked on.
Acute stress may be protected against by transiently inducing the RCAN1 gene, but ongoing stress may lead to chronic RCAN1 overexpression, which can have dangerous side consequences. RCAN1 protein levels that are persistently increased may induce or aggravate a number of illnesses, including tauopathies like Alzheimer's disease. Through the inhibition of calcineurin and the stimulation of GSK-3 by RCAN1 proteins, stress can cause various disorders.
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Describe the structure of a typical eukaryotic chloroplast
cite two results of water’s high heat capacity that are essential for warm blooded animals ( endotherms ) ability to maintain thermal homeostasis
Answer:
People, polar bears, penguins, and prairie dogs, like most other birds and mammals, are endotherms. Iguanas and rattlesnakes, like most other reptiles—along with most fishes, amphibians, and invertebrates—are ectotherms.
Endotherms generate most of the heat they need internally. When it's cold out, they increase metabolic heat production to keep their body temperature constant. Because of this, the internal body temperature of an endotherm is more or less independent of the temperature of the environment. What is metabolism?
This pattern is shown on the graph below: the mouse maintains a steady body temperature close to 37\,^\circ \text C37
∘
C37, degrees, start text, C, end text across a wide range of external temperatures.
how does the lipid bilayer of a membrane form a barrier to molecules
The lipid bilayer functions as a barrier to molecules Because it is made up of densely packed molecules with lengthy nonpolar hydrocarbon chains.
The lipid bilayer is a fundamental part of every cell membrane. Because it is made up of two layers of fatty acids arranged in two sheets, the structure is known as a "lipid bilayer." The lipid bilayer, which surrounds all cells and provides the cell membrane structure, is normally between five and ten nanometers thick. The lipid bilayer serves as a barrier, retaining ions, proteins, and other molecules where they are required while preventing their diffusion into unintended locations.
Simple Diffusion Across the Cell Membrane:
The lipid bilayer's structure enables for simple diffusion of hydrophobic molecules like lipids as well as tiny, uncharged substances like as oxygen and carbon dioxide to move through the cell membrane along their concentration gradients.
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Question 3 (5 points)
How many centimeters are in 5.7 meters?
Answer:570
Explanation:
There are 100 centimeters in one meter so if we have 5.7 meters we would multiply that by one hundred to get our answer of 570.
Please help!!!
Name 3 pairs that show a strong evidence that there is a difference between the populations. Explain why you chose those 3 pairs. Compare the locations to one another in pairs.
Answer:
Bombay,capehenlopen,rheboth
Explanation:
population can increading according the paychart that shown in the top there.
What molecule did Woese and Fox use to construct their polygenetic tree?
Answer:
16S ribosomal RNA
Explanation:
Carl Woese used the 16S rRNA gene to discover the third major domain of life, the archaea.
The opposing movement of dorsiflexion is:
Answer:
The opposing movement of dorsiflexion is Plantar flexionAnswer:
flexion is the opposite of dorsiflexion and involves moving the foot in a downward direction, toward the ground. Plantar flexion occurs when the foot is moved downward between 20 and 50 degrees.Aug 14, 2017
Explanation:
dorsiflexion refers to bending of the foot at the ankle or talocrural joint in the direction of teh dorsum. Its opposite movement is plantar flexion
How did experiments with mice contribute to our understanding of animal development?
Mice are used as the model species to learn different behavior of animal, physiological activities and doing experiment on mice will give us the knowledge to learn much better when there’s more mice rather than being alone.
Why Do We Experiment on Mice?Choosing mice as model organism for experiments makes a sense for more imaginative than scientific, these are small, don't need a lot of space, don't cause much damage when it is provoked, safe to do experiment on mice in lab.
It can be easily modified genetically which means scientists can manipulate any gene on any chromosome at any time, so that certain genes can be modified into inactive or turned off.
The scientist can manipulated mice and the process is called as knockout mice and they are a boon to researchers who are attempting to study how a certain genes can cause diseases.
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1. Look at this picture to answer the question. Monomers join together to
make polymers. Which best describes the picture below?
A
C
B
* 1 point
A and c are like polymers and b is like a monomer
A and b are like polymers and c is like a monomer
A and b are like monomers and c is like a polymer
A and c are like monomers and b is like a polymer
A and b are like monomers and c is like a polymer because A and B joined together to make C polymer, hence option C is correct.
What are polymers?Covalent bonds are used to join the monomers together to create the bigger molecules known as polymers which break down into monomeric units again.
Monomers generate water molecules as byproducts as a result. Dehydration synthesis, which means "to bring together while losing water," is the term used to describe this kind of process.
Therefore, A and B joined together to make C polymer, hence option C is correct.
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9. A flowering plant species grows on the mainland near the coast. One summer, a tropical storm blows seeds from this population several hundred miles out to sea. Some of the seeds land on an island, where they form a new population. Describe two ways that speciation could occur in this situation. Include the concepts of genetic drift, gene pool, reproductive isolation, and selection in your description.
Allopatric or peripatric speciation are the two types of speciation that might take place in this circumstance.
Allopatric vs peripatric speciation :Physical barriers prevent members of the groups from interbreeding, just like in allopatric speciation. Peripatric speciation, as opposed to allopatric speciation, is characterized by a large size disparity between the two groups.
What is the difference between peripatric and parapatric?The two diverging species still interact geographically during parapatric speciation, but there is selection against genetic exchange because of the disadvantage of heterozygotes. Because there is no contact between diverging populations during peripatric speciation, it is different from parapatric speciation.
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What is the circumference of a circle
with a radius of 28 m?
Considering the definition of circumference of a circle, the circumference of a circle with a radius of 28 m is 175.93 m.
Definition of circle and circumferenceA circumference is a flat, closed, curved line whose points are the same distance from an interior point called the center.
The circle is the surface of the plane bounded by the circumference. That is, it is formed by all the points of the circumference and all the points of the plane inside it.
Definition of circumference of a circleSo, the circumference of a circle defines the length of the circle's outline. The circumference is also called the perimeter of the circle, because it is a measure of the limits of the circle.
That is, the circumference of a circle is the distance around the circle, also called the perimeter of the circle.
The expression to calculate the circumference of a circle "C" can be found by multiplying the number pi by the diameter of the circle "d":
C= π×d
The circumference of a circle can also be calculated using the length of the radius, considering the radius is half the diameter (or what is the same, the diameter is twice the radius):
C= π×2×r
Circumference of a circle in this caseIn this case, you know the circumference of a circle has a radius of 28 m.
Replacing in the definition of circumference of a circle:
C= π×2×28 m
Solving:
C= 175.93 m
Finally, the circumference of a circle with a radius of 28 m is 175.93 m.
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What characteristic must physical properties have in order to use them to classify matter
Answer:
Physical properties are characteristics that describe matter. They include characteristics such as size, shape, color, and mass.
Explanation:
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In terms of energy, which of these would be directly available to the consumer?
heat
respiration
egested waste
biomass
Answer:heat
Explanation:
what by-product is produced when cereal grains are being screened and cleaned, which has a quite variable composition?
The by-product which are produced when cereal grains are being screened and cleaned are bran and endospermic tissue which are removed from the cereal grains.
What are cereals?Cereals are the staple food that are the major source of nutrition for the whole world. The bran of cereal is obtained from the process of milling as by-product and it contains various advantages such as they contain health promoting constituents such as minerals, vitamins, dietary fibers, polyphenols, as well as phytosterols.
Cereal grains are used for the food of humans and they are the basic source of food for humans and it has a great variety and majority is used directly. They are also great source of food for animals.
Therefore, The by-product which are produced when cereal grains are being screened and cleaned are bran and endospermic tissue which are removed from the cereal grains.
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What’s the answer???? This is biology.
Answer:
report results
Explanation:
Question 14 of 25
The development of cars has been good in some ways and bad in others. The
car has allowed for better transportation but it is also responsible for a great
deal of pollution. Which activity helps solve the pollution problem through the
use of new technology?
OA. Encouraging people to walk more
OB. Encouraging people to ride a bus
O C. Building fewer cars
OD. Building cars that give off less pollution
SUBMIT
Answer:
the bus they are riding also causes harm to nature and it will make most people very tierd
Cells are often called "the _____ of life."
Answer:
I think it is the "building blocks of life"
Explanation:
Cells are the smallest living things in our bodies and what helps keep us alive. Without cells we wouldn't have simple things like blood, muscles, and nutrients needed to survive.
what does the pH scale indicate
Answer:
pH is a measure of how acidic/basic water is
Explanation:
What tells you the size of the nucleus
Numerous structural elements of the nucleus, such as the nuclear envelope and DNA, regulate the size and shape of the nucleus.
One of the most noticeable features of a eukaryotic cell is its spherical nucleus, which normally makes up 10% of the cell's volume (refer the picture attached below).The nucleus of mammalian cells has an average diameter of about 6 micrometres.Lamins, intermediate filament proteins, are the proteins that make up the nuclear lamina. By supporting the nuclear envelope, they guarantee that the nucleus' general shape and structure are preserved.It makes sense that DNA may have an impact on nuclear volume as the size of the nucleus may be directly correlated with the quantity of DNA it contains and the degree to which that DNA is compacted.Hence, numerous structural elements of the nucleus, such as the nuclear envelope and DNA, regulate the size and shape of the nucleus.
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Assess the consequences of exponential population
growth of any population.
The consequences of exponential population growth of any population is that the supplies could someday run out, birth rates might increase or decrease, and it might reach its carrying capacity.
Exponential Population Growth- Exponential growth happens if a population's per capita growth rate is constant, regardless of population size, leading the population to increase dramatically as the population rises.
Birth Rate- The proportion of live births to 1,000 people in the general population in a given year.
Carrying Capacity- The maximum number of humans that a particular kind of animal or plant can sustainably support. The smallest number of a specific species that the environment can tolerate. The usual number of individuals of a certain species that the habitat can support.
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How does a fast moving stream respond and adjust to changes?
Answer:
A stream does not respond and adjust to changes,
Explanation:
because it does not react to changes in environment.
Bobby drives 1,200 miles in 8 hours what is his average speed (s=d/t)
Answer: 150 mph, no explanation needed, just simple math
Answer:
150
Explanation:
1,200 divided by 8 is 150.
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Two test tubes labeled A and B
We set up another experiment in which we added the following enzymes:
Test Tube A = cellulase and Test Tube B = amylase. When the substrate
from the enzyme lab is added what would you expect to see happen in
each tube?
An enzyme-catalyzed reaction initially progresses at a faster pace as substrate concentration rises. This rise in rate of a reaction levels off as the substrate saturates the enzyme molecules.
An enzyme's concentration increases along with the speed of an enzyme-catalyzed process. The breakdown of the polysaccharide starch (amylose) into the disaccharide maltose is catalyzed by the enzyme amylase. Although it is easily abundant in saliva, obtaining high amounts might be uncomfortable. It is found throughout plant tissues, but it is most prevalent in seed, where that might play a role in starting the conversion of starch that has been stored into the much-needed glucose in enzyme-catalyzed process. The most prevalent organic polymer on earth is cellulose, a polysaccharide made up of a linear chain of 1,4-linked d-glucose subunits with such a degree of polymerization ranging from few hundreds to over ten thousand. An enzyme-catalyzed process is created when an enzyme binds to its substrate. This complex provides certain ions or chemicals groups that really establish chemical bond with molecule as a crucial stage of the reaction process, lowering the energy of activation and promoting its quick progression.
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7. Heat tolerance in flies is a heritable trait. The variation in heat tolerance across a population of flies can be measured by subjecting groups of 100 flies to different temperatures and measuring the percentage of flies that survive. The following graph shows the distribution of heat tolerance across one species of fly living in hot desert regions of Africa. Predict what will happen to the size of this population and its allele frequency if a massive heat wave descends on the area in the future, bringing daily temperatures to 42°C and lasting several months of time.
All flies that can't tolerate 42°F will die. Only high-temperature-tolerant alleles are handed down.
'This is further explained below.
What are alleles?Generally, One of two or more variants of a DNA sequence (either a single base or a segment of bases) at a specific position within the genome is known as an allele.
In conclusion, All of the flies in the population that are unable to withstand temperatures higher than 42 degrees Fahrenheit will perish. Only those alleles that are responsible for high-temperature tolerance will be passed down to subsequent generations.
The populace will get used to the heat.
The survival curve will begin to ascend after a few months have passed.
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