Controlled variable: experiment should use the same types of plants. Thus option B is correct.
What are the types of variables in experiment ?Variables are the measure, manipulate and control in research. For example person's eye color, its value can change from brown to blue depend on different factors.
An independent variable is a singular characteristic, Age is an example of an independent variable.
A dependent variable relies on other variable and can be changed by other components. For example a grade on an exam is a dependent variable mainly depend on Independent variables.
A Controlled variable remain constant and no effect on other variables. It is used to prevent bias in an experiment.
An intervening variable or mediator variable used to explain a cause or connection between dependent and independent variables.
Thus option B is correct.
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what is a phosphodiester linkage?
-please explain this not as complicated as the internet
Answer:
where two of hdroxyle groups in phosphoric acid react with hydroxyl groups
Define homeostasis and its adaptive advantage.
Forests are filled with trees, so they are also known as ______. woodlands wood conservatories tree conservations tree farms
Answer:
woodlands
Explanation:
i did a quiz on this and i got a 100
Answer:
Woodlands
Explanation:
I did this quiz a few days ago and got 100%
list two organelles present in a plant cells put absent in an animal cell
Answer:
cell wall, chloroplasts and other specialized plastids, and a large central vacuole
Explanation:
How does a mountain affect weather?
Answer:
Mountains have an impact on climate because they block wind and get more rain than low-lying areas. As air is driven over higher ground, it cools, condensing moisture and falling as rain. The higher above sea level an area is, the colder it is.
Answer:
Mountains can have a significant effect on the amount of rainfall. ... The further up the mountain the colder the temperature. Then, when the air travels back down the mountain it gets warmer and drier, because the moisture in the air dried out during the rise up the mountain. This area gets less rain as a result.
Explain what would be the effect of having stratified epithelium in the alveoli of the respiratory system?
The alveoli needs of the epithelium for the gaseous exchange and stratified squamous epithelium are formed of multiple layers the difficulty in a gaseous exchange
If alveolar tissue were manufactured of stratified epithelium rather than simple squamous epithelium, oxygen diffusion would be reduced.
What is stratified epithelium?A stratified epithelium is a type of epithelial tissue made up of multiple layers of epithelial cells.
The only layer in contact with the basal lamina is the basal layer. This layer also undergoes mitotic division, resulting in cells in the upper layers.
Depending on their origin, the primary functions of the respiratory epithelium are to moisten, safeguard the airway tract from harmful microorganisms, infections, and tissue injury, and facilitate gas exchange.
Oxygen diffusion would be reduced if alveolar tissue were made of stratified epithelium rather than simple squamous epithelium.
Because of the multiple cell layers, oxygen would have to travel a greater distance to diffuse from the alveoli.
Thus, these can be the effect of having stratified epithelium in the alveoli of the respiratory system.
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plez help me .give the answe
Answer:
Sorry for the delay, they are so many questions and it took me a while
Which is the following is true about the properties of the mantle?
1)The mantle is hotter the core.
2)The mantle contains two different layers.
3)There are rock samples collected from the mantle.
4)The mantle produces magnetic fields.
Answer:
the answer is number 2. the mantle contains two different layers
Explanation:
The core is way hotter then any other layer.
The core produces magnetic fields.
No one would be able to come back alive for a rock sample from the mantle.
What is the energy role of a clown fish
glucose is the answer to the question
Lyme disease is spread to humans through tick bites. A tick becomes infected after it has bitten a deer carrying a pathogen.
Which statement supports a year where there is an increase in Lyme disease?
Answer options with 5 options
A.
Due to an increase in food supply, there is an increase in the deer population.
B.
Due to a decrease in food supply, there is a decrease in the deer population.
C.
Due to an increase in food supply, there is a decrease in the deer population.
D.
Due to a decrease in food supply, there is an increase in the deer population.
E.
Due to a decrease in deer population, there is an increase in the tick population.
Answer:
A. Due to an increase in food supply, there is an increase in the deer population.
Explanation:
An increase in deer population means an increase in chance of deer being infected, a higher chance that a deer is infected means a higher chance of a tick being infected, since there are more deer, there are more ticks, the more infected ticks, the more infected with Lyme Disease.
What does something like C9B, G4A tell you about the subunits, their relationship to each other, location in the molecule, or about the molecule in general
Despite not having access to the subunits mentioned, we can confirm that subunits of a molecule interact with one another through molecular forces that help to shape the molecule as a whole.
What are these forces?The subunits of molecules each have their own individual structures as well. They are held together by hydrogen bonds as well as van der Waals forces between chains, which are the most important in terms of their effect on molecular geometry.
Therefore, we can confirm that subunits of a molecule interact with one another through molecular forces that help to shape the molecule as a whole.
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What does the DNA shape remind you of?
How many strands do you see?
Answer:
The shape is a double helix, but it's helpful to think of it like a twisted ladder. Here, there are two strands. A strand is the line of circles you see that the lines connect to.
Hope this helps!!
How are fossils used to interpret Earth's past physical and biological history?
Write a 500-word research report on a pathogenic bacterium that is not discussed in this unit (you may choose one from the table in the pathogenic bacteria section of the Eubacteria lesson). Include the history, the scientific name of the bacterium, vectors, symptoms, etc.
The pathogenic bacterium Staphylococcus aureus corresponds to a bacterium of the group of gram-positive cocci, and is part of the human microbiota.
Characteristics of the bacteriumStaphylococcus produce toxins which are proteins produced and exposed to the surface of the bacteria that can destroy human cells and can spread through contact with the infected host.
Some symptoms of infection are the production of red nodules, boils and pimples, which are usually infected with the presence of pus, and are treated with antibiotics.
This bacterium can cause several diseases, such as the simplest infections present in boils, as well as serious diseases with high mortality, such as endocarditis, pneumonia, meningitis and septicemia.
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Draw an illustration that explains the procedure described in Technology on the Case. Then, using your illustration and evidence from the text, construct an explanation for how this procedure prevents the transmission of LHON from one generation to the next.
Which of the following tests would you use to test for the presence of aspartame: monosaccharides, lipids, starch, and protein. Why?
2
What evidence did Alfred Wegener use to support his
theory of continental drift?
A
Fossll discoveries
B
The Himalaya Mountains
С
Ancient maps of the world
D
Charts of selsmic activity
Answer:
A) Fossil discoveries, mostly of animals who couldn't swim, helped prove continental drift
HELP ! 50 POINTS !!
Which of the following statements correctly matches a cell part with its function?
A). The cell membrane packages lipids for export while the mitochondria modifies
and packages proteins.
B). The mitochondria perform photosynthesis while the chloroplasts perform
cellular respiration.
C). The nucleus stores genetic information while the Golgi apparatus sorts and
packages products for distribution.
D). The nucleus produces energy while the ribosomes direct the activities of the
cell.
C
The "Nucleus" contains the genetic information of the cell in the form of deoxyribonucleic acid (DNA) or chromosomes and thus, controls cell growth and multiplication. It is also the site of DNA replication (formation of an identical copy of DNA).
While the "Golgi apparatus", or Golgi complex, functions as a factory in which proteins received from the ER are further processed and sorted for transport to their eventual destinations: lysosomes, the plasma membrane, or secretion.
Give two examples of integral membrane proteins I'm plant cell
Answer:
Examples of type I membrane proteins include the histocompatibility antigens, glycophorin and membrane
immunoglobulin. Examples of type II
membrane proteins include the transferrin receptor, the asialoglycoprotein receptor, and many ecto-enzymes and glycosyl transferases.
YA . Stress and anxiety of this factor:which organs of the body are affected ?
Answer:
all of them in my opinion
Explanation:
I'm not 100% sure on all the "scientific" answer. But it effects all of my organs :|
Answer:
Stress affects all systems of the body including the musculoskeletal, respiratory, cardiovascular, endocrine, gastrointestinal, nervous, and reproductive systems.
Explanation:
have a great day
What happens to the number of carbon atoms in the carbon chain molecules as they go through the Krebs cycle
All the six number of carbon atoms in the carbon chain molecules as they go through the Krebs Cycle.
What is Krebs Cycle?The Krebs cycle, otherwise called the citrus extract cycle or the Krebs cycle, is one of the main response successions in natural chemistry.
Not exclusively is this series of responses liable for the vast majority of the energy needs in complex creatures, the particles that are delivered in these responses can be utilized as building blocks for an enormous number of significant cycles, including the combination of unsaturated fats, steroids, cholesterol, amino acids for building proteins, and the purines and pyrimidines utilized in the blend of DNA.
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When a surface is impervious, it does not allow the water to percolate into the soil and into the groundwater. The water then is considered to be _____ water.
A. infiltrating
B. heavy
C. runoff
Answer: is C runoff
Explanation:
One summer, a sinkhole opened up in a swamp and all of the water in the swamp dried up. The next summer, there was an extraordinary amount of rain, and the dry basin that had been the swamp filled with water. The environmental change that occurred in the second year acted to
A. decrease the stability of the swamp ecosystem.
B. slow climate change in the swamp ecosystem.
C. increase the stability of the swamp ecosystem.
D. speed up climate change in the swamp ecosystem.
Water Vapor in the atmosphere ___________ to form clouds.
Answer:
The answer is condensation
Explanation:
Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is very important for the water cycle because it is responsible for the formation of clouds.
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If a highly concentrated salt solution is on one side of a membrane, and a lower concentrated salt solution is on the other side, water molecules will move__________.
Answer:
until the membrane breaks down
Explanation:
got it right
The water molecule will move from lower salt concentration to higher salt concentration.
What is osmosis?The spontaneous net movement or diffusion of solvent molecules through a selectively permeable membrane from a region of high water potential to a region of low water potential, in the direction that tends to equalize the solute concentrations on the two sides, is referred to as osmosis.
Both diffusion and osmosis aim to equalize forces within cells and organisms as a whole, spreading water, nutrients, and necessary chemicals from high concentration areas to low concentration areas.
Osmosis occurs in both the small and large intestines, with the large intestine having the most osmosis.
Food travels from the esophagus to the stomach and then to the small intestine as it is processed by your body. While there, your body absorbs essential nutrients through osmosis.
Thus, as the solution having high salt will have less water so as per the tendency of water, it will move from higher water concentration (i.e., low salt concentration) to lower water concentration.
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No links please help me
During development, a doctor discovers that a fetus is not receiving enough oxygen. Which structure should the doctor examine further to find a source of the problem?
A. Umbilical cord
B. Amniotic sac
C. Uterus
D. Placenta
Answer:
The placenta is responsible for supplying oxygen and nutrients to the growing Fetus.
The principal source of air pollution from volcanoes is
Answer:
locally sulfur dioxide gas
Explanation:
these gases can come from Lava flows as well as a volcano that erupts violently
Answer: Ash
Explanation:
took on ed
Brefly explain Endogenous antigen & examples & autoantigen
Exogenous antigens refer to the antigens that enter the body of the organism from the outside while endogenous antigens refer to the antigens produced from within the cell as a part of normal cell metabolism or when the cell is infected by bacteria or viruses.
Examples
viral proteins produced during viral replication;
proteins produced by intracellular bacteria such as Rickettsias and Chlamydias during their replication;
proteins that have escaped into the cytosol from the phagosome of phagocytes such as antigen-presenting cells;
A chemical bond resulting from the sharing of electrons between two elements with very similar electronegativity are indicative of ____ bonds. Methane is a good example of this type of bond.
Group of answer choices
ionic
hydrogen
polar covalent
nonpolar covalent
Answer:
non-polar covalent
Explanation:
the electrons are shared so its a non-polar covalent bond