A student puts drops of Lugol's iodine solution into the water in the beaker shown. The water turned red. After a short time, the starch solution inside the dialysis tubing turned black. Which function of the cell membrane was the student demonstrating?
Answer:
Cell membrane as a semi permeable membrane.
Explanation
A semi permeable membrane is the one that would only allow water,ions and certain molecules to pass through it by diffusion while restricting other large molecules from passing through.
Details in the attachment.
What is the function of the plasma membrane? a Sorts proteins and then packs them into vesicles b It is a flexible boundary outside of the cell wall c Protection for the plant cell d It allows nutrients to enter the animal cell and wastes to be removed
Answer:
The correct option is d
Explanation:
Plasma membrane (or cell membrane) is a semipermeable or selectively permeable barrier that regulates what goes in and out of the cell by keeping toxic substances out of the cell while allowing nutrients, ions and some metabolic products inside the cell.
This membrane surrounds all the content/organelle inside (cytoplasm and nucleoplasm) of the cell.
Find the acceleration if the change in velocity is 5 m/s and the time is 10 seconds
Answer:
i think that
Explanation:
solution
given
velocity (v) = 5m/s
time(t) = 10 sec
acceleration (a) = ?
By using formula,
a = v÷t
a= 5÷10
a = 2m/sec
Answer:
0.5 m/s
Explanation:
acceleration (a) = speed (s) / time (t)
a = 5/10
Some examples of nonpolar molecules include fats, oils, and waxes. How do these substances interact with water?
Answer: Fats and oils are nonpolar, so they will remain separate from molecules of a polar solvent such as water. Sodium and chloride ions are attracted to charged regions on molecules of polar solvents such as water.
Explanation: Nonpolar molecules do not dissolve easily in water. They are described as hydrophobic, or water fearing. When put into polar environments, such as water, nonpolar molecules stick together and form a tight membrane, preventing water from surrounding the molecule.
Imagine that you are given 25 germinating pea seeds that have been placed in 5M hydrochloric acid for five minutes. You place these seeds after you rinse them off, in a respirometer at the end of the five minutes and collect data. Predict the rate of oxygen consumption for these seeds and explain your reasoning.
Answer:
In the respirometer, it will be present no significant values of oxygen from the respiration process. The acid can denature proteins in a non-functional shape.
Explanation:
The pH of the solution will be considerably low in order to the proteins to work normally. In this case, the polarization of sites in the protein will cause a completely denaturation.
A normal pH is essencial for the best working coefficient of enzymes an proteins in general as well as temperature.
Planets that have not cleared the clutter from their neighborhood.
Class: earth and space science
Answer:
A planet that has not cleared the clutter from its neighborhood but meets all other criteria for a planet is called/classified as a dwarf planet.
Explanation:
Which of the following terms belongs in a different group?
1. femoral
2. pelvic
3. patellar
4. axillary
Axillary bone is a term which belongs in a different group as all the other bones are present in lower portion of the body.
What are bones?The human skeleton of an adult consists of around 206 bones, depending on the counting of sternum .It is composed of 270 bones at the time of birth,but later decreases to 206, 80 bones in the axial skeleton and 126 bones in the appendicular skeleton. Many small accessory bones, such as sesamoid bones, are not included in this count.
The axial skeleton, comprising the spine, chest and head, contains 80 bones. The appendicular skeleton, comprising the arms and legs, including the shoulder and pelvic girdles, contains 126 bones, bringing the total for the entire skeleton to 206 bones. Infants are born with about 300 bones with most of it being cartilage, but will later fuse together and decrease over time to 206 bones.
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from were does the energy for photosythesis come
Answer:
the energy comes from the sunlight :)
Explanation:
Answer:
The energy comes from the sun.
Explanation:
The solar rays are converted to energy.
I hope this helps!
What determines how much energy a human can receive from food answer correct and ill give brainliest
A. how much oxygen the food contains
B. how much nitrogen the food contains
C. how much the food molecules weigh
D. how much energy the food molecules have
Answer:
D. how much energy the food molecules have
Explanation:
How do I balance C3H8 + O2—> CO2 + H2O + CO + C
Answer: C3H8 + O2—> CO2 + H2O + CO + C how do I balance C3H8 + O2—> CO2 + H2O + CO + C
Explanation:
what organic molecules are in potato root cells?
Answer:
potato Potatoes are made up of starch (a complex sugar). Complex carbohydrates are called polysaccharides (poly means “many”). So plants store their energy as the complex carbohydrate called starch. Plants can also have a complex carbohydrate called cellulose.
Explanation:
I hope it will
Answer for brainiest :)
Answer:
D
Explanation:
Well, animal cells use simple sugars, like glucose. The simple sugars are the only ones small enough to pass through cell walls. We use ATP to access the energy in the sugars. Cells can either use a aerobic system (using oxygen) or an anaerobic system to metabolize sugars. Humans generally use the aerobic system although in some cases our cells are forced to use the anaerobic system.
who likes crosswords because I need help on it thank you
Answer:
study
Explanation:
go on the internet and study
I'm Katie, can someone help me? will mark brainliest In a negative feedback loop, the initial signal is:
Question 15 options:
remains unchanged
canceled out
amplified to a climax
Answer:
B, or Canceled out.
Explanation:
In a negative feedback loop, the product of the loop inhibits whatever initiated the loop, preventing more product from being formed. This is in contrast to a positive feedback loop, where the product of the loop further stimulates whatever initiated the loop, resulting in even more product being formed. :)
Answer:
Explanation:
In a negative feedback loop, the product of the loop inhibits whatever initiated the loop, preventing more product from being formed.
This is in contrast to a positive feedback loop, where the product of the loop further stimulates whatever initiated the loop, resulting in even more product being formed.
Help please now omg
Answer: >30
Explanation:
In a eukaryotic cell, the process of cellular respiration can metabolize one molecule of glucose into 30 to 32 ATP. The process of glycolysis only produces two ATP, while all the rest are produced during the electron transport chain.
Which types of friction are observed in this avalanche?
Answer:
kinetic is one of them.
What DNA strand is complementary for the DNA strand attgcgtatcc
Answer:
TAACGCATAGG
Explanation:
The complementary for A is T (visa versa)
The complementary for G is C (visa versa).
So we just have to put the complementary for each letter to get the complementary strand.
Hope this helps!
if X equals to 2 and X equal to zero are zero of the polynomial 2 x cube minus 5 x square + a x + b find the value of a and b
that is what I think hope it's right good luck
Order the following from smallest to largest, with 1 being the smallest and
5 being the largest. *
Help MEH!!!! plz Which feature may form as a result of erosion related to runoff?
O deltas
O gullies
O flood plains
O stalactites
Gullies are a feature that may form as a result of erosion related to runoff. It may produce the transfer of water from fields to adjacent land.
What is runoff erosion?Runoff erosion is a natural process that produces the transfer of water from fields to adjacent land.
The runoff may lead to erosion because the eroded material in the soil can be deposited a significant distance away.
This process (runoff related to erosion) occurs when there is more water or any other substance (for example, pesticides) than the land/soil can absorb.
Learn more about runoff erosion here:
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Answer:
gullies
Explanation:
its right i took the test and got 100%
When the Sun shines directly on an object, the color of the object determines how the
object heats up, because its color affects how light is-
O absorbed and reflected.
absorbed and refracted.
O refracted and transmitted.
O absorbed and transmitted.
Biotic factors are the living aspects of an ecosystem (e.g.
animals and plants), and the nonliving aspects of an
ecosystem (e.g. sunlight and water) are known as ___??
Answer:
Nonliving aspects of an ecosystem are known as (Abiotic)
Abiotic is the nonliving aspects or factors of an ecosystem which is needed by the organism for its survival.
Abiotic is the non-living part of an ecosystem on which all the biotic factors depend. If one of the abiotic factor is eliminated or prevented from entering the ecosystem then all living organisms are adversely affected because all these organisms depend on that abiotic factor. Examples of abiotic factors are water, sunlight, oxygen, soil and temperature which is present in almost in all ecosystems.
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What can you assume about the amount of glucose (sugar) that is produced as you move the light closer? Would it go up or down?
Answer:
I think the answer will be "up"
Explanation:
how do you find the density of a rock
Answer:
i think you find out by hitting the rock if its more dense it wouldnt break as much
Explanation:
how can protein from a cheeseburger become a completely different protein molecule inside you that your body needs
Answer:
It depends on what you have consumed prior to eating the cheeseburger. Amino acids (building blocks of protein) are found in hamburgers. Your body however may need iron, or potassium. It really just depends ;)
Explanation:
What is dermal plicae?
Answer:
The dorsolateral dermal plicae of the leopard frog are two pale, thickened bands of the dorsal skin extending posteriorly from each eye to the urostyle prominence While they are normally found in all areas of trunk skin, the largest ones are in the plicae
Explanation:
dermal plicae of the leopard frog are two pale, thickened bands of the dorsal skin extending posteriorly from each eye to the urostyle prominence. ... While they are normally found in all areas of trunk skin, the larg- est ones are in the plicae
What effect does water clarity have on sea otters and how does that effect the food chain?
Answer:
It can decrease the sea otters which can lead trouble to the food chain since there are consumers who eat sea otters
Explanation:
hope this helps
ok I have like this campaign thing for science so i have to try and get people to vote for the mitochondria so on a slide i have to include the structure and the function of the mitochondria and be sure to relate them it also says it is very important to make the connection with the voters about why the mitochondria is the most important so include why the mitochondria is crucial for survival of your organism so if anyone can help that would be amazing
Answer:
The mitochondria is the most important organelle because it is where energy is produced through cellular respiration. It serves as an energy source for eating, breathing, moving, and thinking: all basic units of life. If there were no mitochondria many essential functions of the cell could not happen.
Explanation:
Forensic Science Please Help!!
What are some of the ways that a document examiner might try to match a questioned document to a specific typewriter? What aspects might they look at?
Answer:
Some of the ways you could try to match a questioned document to a specific typewriter would be to match the handwriting, you could also look at different changes made in the handwriting.
Some of the ways you could try to identify a questioned document to a specific typewriter would be to match the handwriting, you could also look at different alterations made in the handwriting.
Why is forensics important?The criminal justice system cannot function without the contributions of forensic science. Forensic scientists collect evidence from crime scenes and other locations, assess that evidence, and then create objective conclusions based on their findings. These conclusions can either aid in the investigation and conviction of criminals or clear an innocent individual of any wrongdoing.
Studies of handwriting for forensic purposes are an essential component of the legal system. These examinations seek to ascertain whether or not handwritten documents can be traced to particular writers by making a comparison to known exemplars of that handwriting.
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CAN SOMEONE PLEASE HELP WITH THIS?!
Answer:
9.) third one
10.) first one
11.) cant help you have to write that one (sorry)
12.) first and fourth ones.
Explanation:
