what role do independent and dependent varibles play in controlled experiment
Water has a neutral ph. if water was acidic or alkaline what abundance of ions are present in an acidic substance and what ions are present in an alkaline substance?
Answer:
Calcium and magnesium
Explanation:
Answer:
Calcium and magnesium
Explanation:
2. If you cannot see most cells with just your eyes, how can you see a unicellular organism?
Answer:
Microscope
Explanation:
Answer:
microscope
Explanation:
Metaphase in mitosis is characterized by
Select one:
A. lining up of sister chromatids down the center of the cell
B. separating of the sister chromatids
C. cytokinesis
D. separating of homologous chromosomes
Answer:
A. lining up of sister chromatids down the center of the cell.
Explanation:
Hope that helps! If not, let me know. I just took Life Science last year, so I still know that kind of stuff... (for now...)tehehe
Please help me out
Match these examples
Tissue
Organ
Organ system
With these examples
Bone Marrow
Bones
Skeletal system
human body
Answer:
organ system -skeletal system,bone marrow is a tissue while bones are organ
What are the first or primary consumers in the food web below?(pic)
green plant
mouse, owl and rabbit
mouse, rabbit and goat
Jackal, wildcat and goat
The first are the grass,mouse,rabbit, and goat
which would a scientist most likely examine to locate gene mutations?
Answer:
Single base pair mutations can be identified by any of the following methods: Direct sequencing, which involves identifying each individual base pair, in sequence, and comparing the sequence to that of the normal gene.
DNA is the molecule which is most likely to be examined to locate gene mutations. Thus, the correct option is A.
What are Gene mutations?Genetic mutations are the changes to the DNA sequence which happen during the process of cellular division when the cells make copies of the DNA molecules. The DNA molecule tells body how to form and function well.
Genetic mutations are the changes which could lead to genetic conditions such as cancer, or they could help the humans to better adapt to their environmental conditions over a period of time.
Mutations can be of many different types, such as substitution, deletion, insertion, and translocation of the genetic sequence.
Therefore, the correct option is A.
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Why is technology important when developing scientific theories?
Why is oceanic crust younger than continental crust?
Answer:What is the best explanation for why oceanic crust is subducted by continental crust?
The continental crust is also less dense than oceanic crust, although it is considerably thicker. As a consequence of the density difference, when active margins of continental crust meet oceanic crust in subduction zones, the oceanic crust is typically subducted back into the mantle.
Explanation:Why oceanic crust is younger than Continental?
Through mantle convection, the rich minerals of the mantle may be ultimately “recycled” as they surface as crust-making lava at mid-ocean ridges and volcanoes. Largely due to subduction, oceanic crust is much, much younger than continental crustWhy is the theory of plate tectonics so important to geologists?
Plate tectonics, theory dealing with the dynamics of Earth's outer shell—the lithosphere—that revolutionized Earth sciences by providing a uniform context for understanding mountain-building processes, volcanoes, and earthquakes as well as the evolution of Earth's surface and reconstructing its past continents and .
I need help please with this question ?????!!!
Answer:
9km per hour
Explanation
Speed=distance/time.
. =45/5
=9km per hour
Polypeptides are chains of amino acids. They can coil/fold into different shapes. Some 'R'-groups are either hydrophobic, hydrophilic, or neutral in their charge. Suppose you have a very long polypeptide, where a part of the chain is hydrophobic and another part is hydrophilic. I go ahead and drop this long polypeptide in water and it coils up. How do you think it would coil? Why? What can you infer about the proteins in our bodies regarding this situation
Answer:
The hydrophilic part of the polypeptide chain would be oriented towards the surrounding water while the hydrophobic portion would be arranged away from the water and would make the hydrophobic interior resulting in coiling of the polypeptide chain. The body proteins assume the shapes to organize their hydrophobic parts away from the watery fluid.
Explanation:
Amino acids are the monomers of proteins. Each amino acid, present in proteins, has a central carbon atom. Four functional groups are attached to the central carbon atom of amino acid. These are the carboxyl group (COOH), amino group, a hydrogen atom (H) and a side chain (called R group). Amino acids differ from each other for the side chain present in them. Based on the nature of the side chain, amino acids are hydrophobic or hydrophilic or neutral. Sidechains of some amino acids are charged and have positive or negative charges on them.
The extracellular fluid of the body is a watery medium. Blood also has liquid plasma that is 99% water. The intracellular fluid, called cytosol, is also a water-based liquid.
The hydrophilic side chains of the amino acids interact with the watery surroundings. They can make hydrogen bonds with the water. The charged hydrophilic R groups make electrostatic interactions with the surrounding medium. The hydrophobic R groups of the amino acids tend to arrange themselves away from the watery medium. This makes the part of the polypeptide chains with hydrophobic amino acids to fold so that these R groups are oriented away from the water.
Similarly, when a long polypeptide chain is dropped in the water, the hydrophobic R groups are arranged away from the water while the hydrophilic ones are arranged towards the surface of the chain facing the water. It is done to adopt a stable shape where maximum attraction forces are established.
A receptor site that a molecule can bind to that changes the shape of the active site is called a(n)
a) allosteric site
b) active site
c) disulphide bridge
d) MHC receptor
Answer:
a) allosteric site
Explanation:
An allosteric site is a site on an enzyme other than the active site where a molecule that is not a substrate binds. This changes the shape of the enzyme, making it harder for the substrate to bind and inhibits enzyme activity.
Hope that helps.
Which statements describe how the environment affected village life?
what are pros and cons of using averages in biology
Answer:
Pros- Gives our brains something to refer to and Cons- need to remind ourselves that average doesn't equal all.
Explanation:
Because it's right.
which of the following does not require energy?
a. active transport
b. diffusion
c. endocytosis
d. sodium-potassium pump
i think is D. sodium-potassium pump,i hope that's correct
You are discussing earthquakes with your friends. One friend states that a magnitude 8.0 earthquake is twice as powerful as a 4.0 magnitude earthquake. Another friend states that it is actually 40 times more powerful. Another friend claims that it is 10,000 times more powerful. Which friend is more correct? Explain.
Answer:
The friend that says 8.0 is twice as powerful as a 4.0. Hope this helps
Who invented the microscope?
Answer:
Zacharias Janssen
Explanation:
Answer:
Washington Teasdale
Explanation:
you can just research this online
discuss the problems which farmers face who cultivate crops on hilly or mountainous areas
Answer:
The soil getting washed away
Explanation:
explain how a peach could be used as a physical model of the earths layers
Answer:
a peach is round the Earth is round
to model the Earth layers you can slice the peach and make layers out of it similar to Earth layers
earth has 4 layers so you'll need to slice 4 parts of the peach
Answer:
It is round and can be cut into slices.
Explanation:
I still believe an onion is better because Onions have Layers
how is the available energy in the marine ecosystem different than the African savanna ecosystem?
Answer:
The main producers in the marine ecosystem are plankton, whereas in the African savanna system, it's trees and grass. And in the marine ecosystem, sunlight is not available for all producers
Explanation:
Which homeostatic process moves particles against a concentration gradient?
dynamic equilibrium
passive transport
osmosis
active transport
Answer:
Yes, the correct answers is D: active transport
Explanation:
got it right in edg 2020
hope this is of help :)
Answer:
D it’s the answer
Explanation:
What is informal science?
Answer:
Informal science education (ISE) is lifelong learning in science, technology, engineering, and math (STEM) that takes place across a multitude of designed settings and experiences outside of the formal classroom
i hope this help
Explanation:
Informal science education (ISE) is lifelong learning in science, technology, engineering, and math (STEM) that takes place across a multitude of designed settings and experiences outside of the formal classroom.
Which unit of measurement best matches the size of microorganisms
Answer:
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Explanation:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
why is the groin swollen when our toe is injured
Answer:
Because when your toe is injured it sends a pulse to your groin that causes your groin to fell pain so your brains neuropathegens dont feel as much pain transmiting through your toe. Hope this helps :)
HELP PLEASE ANSWER WITH A 10 SENTENCE PARAGRAPH!
How do scientists use the electromagnetic spectrum to view our universe? Would we be able to see some objects in the universe if we only used the visible spectrum? Explain.
Answer:
Explanation:
Astronomers use the entire electromagnetic spectrum to observe a variety of things. Radio waves and microwaves – the longest wavelengths and lowest energies of light – are used to peer inside dense interstellar clouds and track the motion of cold, dark gas.
Which type of information can scientists collect using a seismograph?
a) slight shifts in the inclination of a surface
b) pollution levels in the air after a volcanic eruption
c) vibrations occurring inside Earth
d) temperatures of molten rock inside Earth
Answer:
C
Explanation:
Vibrations occurring inside Earth
The type of information that scientists collect using a seismograph is vibrations occurring inside Earth. The correct option is c.
What is seismograph?A seismometer is a measuring device that detects ground noises and shaking caused by earthquakes, volcanic eruptions, and explosions.
Seismographs are typically made up of a seismograph, a timing device, and a recording device.
Seismographs are devices that record the movement of the ground during an earthquake. They are installed in the ground all over the world as part of a seismographic network.
To better understand seismic waves, scientists developed and used a device known as a seismometer. Seismometers now assist scientists in predicting earthquakes.
Scientists use seismographs to collect information about vibrations that occur within the Earth.
Thus, correct option is c.
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Jill is doing an experiment on the movement of pill bugs she will place the pill bugs on flat surfaces covered with different materials to see how the texture of each material affects the bugs movement how can you use her imagination in this experiment A to replicate another student's procedure exactly B to think of different kinds of materials to use C to carefully record the results as they happen D to follow the steps of the procedure precisely
A. B. C. D. what do you think
Answer:
b
Explanation:
i got it right with my answer on apex
Jill can use her imagination by thinking of different kinds of materials to be utilized in this experiment. Thus, the correct option is B.
What is an Experiment?An experiment may be defined as a specific arrangement of instruments, scientific methodology for an event and make a discovery, test a hypothesis, or demonstrate a known fact.
Jill wants to illustrate how the texture of each material affects the movements of bugs. So, she required different kinds of materials in the demonstration of her experiment.
Therefore, the correct option for this question is B.
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Help I got until 4:05
What is the reason of dividing Endoplasmic Reticulum Into two types.
Explain in detail.
Please answer
Answer:
We divide ER into two types because Smooth ER(SER) do not have ribosomes and Rough ER(RER) have ribosome thus former is also called Agranulated ER and Latter is called Granulated ER. SER is not involved in protein synthesis its main function is synthesis of lipids carbs steroid thus it is found in Adipose cells, interstitial cells, liver cells. RER have ribosomes so they are involved in protein synthesis so they are present in protein synthesising cells such as salivary glands and pancreas.
how do fertilizers affect the nitrogen and phosphorus cycle ?
Answer:
Explanation:
Explanation: Many fertilizers are phosphate-based and this accumulates in the soil (and enters waterways), affecting the phosphorus cycle in multiple ways. When phosphate-based fertilizers are used, they potentially enter the soil and water through run-off.
What is an example of dissociation?
A. vegetable oil dissolving in water
B. table salt dissolving in water
C. hydrogen chloride dissolving in water
D. table sugar dissolving in water
Answer:
I'll say B cause the Nacl ion breaks down and get surrounded by hydrogen and hydroxyl ion
Table salt dissolving in water is the example of dissociation.
What do you mean by dissociation?Dissociation is the process by which chemical molecules (or ionic compounds such as salts, or complexes) break down into simpler constituents such as atoms, ions or radicals, usually in a reversible manner.
Moreover, the dissociation of water is an equilibrium reaction in which one water molecule donates its proton to another water molecule.
Salts that are soluble in water dissociate into their ions and are electrolytes. Salts that are insoluble or only slightly soluble in water form very few ions in solution and are nonelectrolytes or weak electrolytes.
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