Students investigate how onion cells react to salt (NaCl) solutions of different concentrations. They observe onion cells in three salt solutions under a microscope.
The image of an onion cell in a 3% salt solution is shown.
Onion Cell in 3% Salt Solution
Answers
Answer:
Less than 3%
Explanation:
I'm guessing that since the solution has a concentration of less than 3%, the water would go into the cell to maintain which would make it expand.
Onions cells can react in different ways when place in any solution. The image of an onion cell are said to be:
The first image is greater than 3% The second image is greater than 3%.
When the salt water is added to the onion tissue, cytoplasm pulls away in course of time from the cell wall. So, due to that, water begins to leave the onion cell where it was more highly concentrated to the area where it was less concentrated.
Onion cell does not burst when placed in a hypotonic environment due to the fact that it has strong cell wall, which hinders the burst from taking place.
Onion peel often shrinks in salt solution when water from cells cytoplasm moves out of the cell.
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Answer:
Amino acids are the building blocks of proteins. protein is a chain of amino acids connected together
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O A. Magnetism
B. Thermal conductivity
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magnetism is the answer
Provide a definition for this term (in your own words) with examples if necessary.
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Answer:
the state or quality of being dense; compactness; closely set or crowded condition.
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Answer:
Lysosomes are vesicles that are formed by the golgi apparatus. They contain powerful enzymes that could break down (digest) the cell products, waste materials , and cellular debris and then force them out of the cel. They also digest invading organisms as bacteria.
accurately describes the energy needs for photosynthesis and cellular respiration?
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Answer:
Solar energy is needed for photosynthesis, and chemical energy in the form of glucose is needed for cellular respiration.
A student is comparing the cells of a prokaryote, an animal, and a plant.
Identifying which two cell parts would show that the cell was a plant cell, and not
a cell of a prokaryote or an animal?
a. nucleus and mitochondria
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d. cell membrane and mitochondria
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Answer: b. cell wall and chloroplast
Explanation:
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Answers
Answer:
natural factors, changes in the sun, emissions from volcanoes, variations in Earth's orbit and levels of carbon dioxide.
Explanation:
PLZZ HELP ON TIME LIMIT!!!!!!!MULTIPLE CHOICE!!!!!!
what is the representative organisms for arthropods
a:seastar
b:sponge
c:fish
d"spider
e:leech
f:coral
g:groundworm
h:snail
Answers
insects, spiders, scorpions, centipedes, millipedes, crabs, crayfish, shrimp, lobster and barnacles
Explanation:
snail
.....
.......
..........
A single population is made of
A) multiple organisms of the same species.
B) multiple organisms of different species.
C) multiple communities.
D) multiple biomes.
Answers
Answer:
A) multiple organisms of the same species.
Explanation:
Answer:
A (multiple organisms of the same species.)
Explanation: hope this helps sorry if i'm wrong
An air mass takes on temperature and moisture characteristics of the land
or water beneath it. What kind of air mass forms over tropical waters that
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A) cool and moist
B) hot and very dry
C) warm and moist
D) cold and dry
I need this today please help
Answers
Answer:
I'm pretty sure its c
Explanation:
Warm and moist kind of air mass forms over tropical waters that have been heated by the sun. Hence option C is correct.
What are topical waters?Topical waters are defined as water between the Tropic of Cancer (23.5° North latitude) and the Tropic of Capricorn (23.5° South latitude). In the Köppen climatic classification, a tropical climate is one in which the average monthly temperature is over 18°C. There is no winter season and there is more annual rainfall than annual evaporation.
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Thus, warm and moist kind of air mass forms over tropical waters that have been heated by the sun. Hence option C is correct.
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1 gram of fat give about how much kj of energy
Answers
Answer:
37 kj
Explanation:
1 gram of fat = 9 kilocalories (kcal)
1 kcal = 4.2 kilojoules (kj)
4.2 kj/kcal * 9 kcal = 37.8 kj
1 gram of fat = 37.8 kJ
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Answer:
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Answer:
y = 1x+7
Explanation:
Some scientists predict that if global warming continues over the next few centuries, melting of the polar caps will raise the level of the oceans, causing some peninsulas to become islands. How might this change eventually affect the species that live on these peninsulas
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Answer:
The study of organisms, populations and communities examines how organisms interact with each other and their environment at individual, population and community levels. To characterize these interactions, NEON quantifies and observes interactions among multiple organisms and their environments. By sampling a variety of organisms in aquatic and terrestrial systems, NEON provides data on individual traits, population dynamics and the composition of communities. Integrated with other data collected across NEON sites, the project produces data in the areas of biodiversity, infectious diseases and invasive species.
Parelaphostrongylus tenuis is a parasitic brain worm that infects members of the Cervidae family, such as deer and moose. The worm's most common host is the white-tailed deer which lives in
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Answer:
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Explanation is that I believe this is the right answer
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Answers
Answer:
TRUE
Explanation:
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Very Large or
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Answers
The properties of carbon atoms allow carbon to easily bond to other carbon atoms to form very small and complex macromolecules with unique structures and special functions.
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Answers
Answer:
digestion is breaking down the food and we need to digest food to get nutrients hope this helps :)
Explanation:
Why do we need the brazilion forest
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Answer:
We need the Brazilian forest because it produces roughly six percent of the world's oxygen and has long been thought to act as a carbon sink.
diagram of breasts...
Answers
Answer:
diagram of breasts
Explanation:
The function of the testes and ovaries in reproduction
Answers
Testes
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Ovaries
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Hope this helped!
Compare and contrast the TWO classes of "seeded "plants.
Answers
Answer:
The seed plants are often divided arbitrarily into two groups: the gymnosperms and the angiosperms. The basis for this distinction is that angiosperms produce flowers, while the gymnosperms do not.
Explanation:
The seed plants are often divided arbitrarily into two groups: the gymnosperms and the angiosperms. The basis for this distinction is that angiosperms produce flowers, while the gymnosperms do not. This is poor form, since it defines the gymnosperms by the absence of a character, and not by any features that the organisms actually share. The gymnosperms do share a number of features, but, as should be obvious from the above cladogram, they are not more closely related to each other than to the angiosperms (Anthophyta). The features shared by gymnosperms were likely present in the early ancestors of the flowering plants as well. It should also be noted that the "progymnosperms" are represented by a box of a different color, in order to make it clear that they are not actually seed plants, but rather are included here because they are believed to be the closest relatives of the seed plants.
Systematics within the seed plants is poorly understood. Part of the problem is that most of the major groups have gone extinct, and several of the groups alive today consist primarily of plants with highly derived morphologies. The above cladogram is based largely on the work of Jim Doyle, a professor at UC Davis, and Michael Donoghue, currently at Harvard, and is therefore somewhat preliminary. It includes some questionable groupings not explicitly supported in their papers.
EXPLAIN the symbiotic relationship between a dog and its fleas. Identify the type of symbiosis that this relationship represents. *
Answers
Answer:
I do not know!!!
Explanation:
The other person that said that is not doing this correctly.
18. In Hypotonic solution, the cell .. *
gets bigger
gets smaller
stays the same
Answers
Please mark as brainliest!
Which statement correctly describes glucose (C6H1206)?
A.It is made of matter and contains twenty-four molecules.
B.It is an element made of three types of atoms.
C.It is an atom made up of carbon, hydrogen, and oxygen.
D.It is a compound made of twenty-four total atoms.
Answers
Answer:
A.It is made of matter and contains twenty-four molecules.
Explanation:
Soil in which of the following habitats is the least dense?
desert
grassland
marsh
forest
Answers
Hope this helps!!
Answer: Desert
I got it right on test
Edg2022
Fa person's croulatory system did not function properly, how might
other systems, such as the respiratory and digestive systems, be
affected? How would homeostasis, or internal stability, be affected by
these system imbalances?
Answers
Answer:
If the circulatory system does not function properly, the blood supply to the organs in the digestive and respiratory systems is altered, resulting in a decrease in the supply of nutrients and oxygen required by the tissues. When the tissues do not receive the adequate amount of nutrients and oxygen to fulfill their functions, a negative alteration of the internal balance or homeostasis is produced.
Explanation:
The circulatory system is responsible for providing blood supply to all tissues and organs of the body. A circulatory system that does not work properly already means an inadequate supply of nutrients and oxygen to the organic tissues.
How does an altered circulatory system affect other systems, such as the digestive and respiratory systems? Respiratory system: it is in charge of providing oxygen (O₂) to the body, through lung breathing and gas exchange. When there is little blood supply, this system decreases its function, thus reducing both the supply of O₂ to the tissues and the elimination of carbon dioxide (CO₂). Digestive system: responsible for the digestion and absorption of nutrients, a function that can be altered when there is not adequate blood circulation. The supply of nutrients to tissues, already compromised by poor circulation, may be insufficient for cellular and tissue demand. How does an altered circulatory system affect homeostasis?The internal balance or homeostasis depends on the normal functioning of all the organic systems. If the circulatory system does not adequately fulfill its function, the tissues and organs do not receive the proper amount of O₂ and nutrients, a deficit that can lead to an alteration of homeostasis.
Considering the connections between Yellowstone’s wolves, aspen and willow trees, and elk; which one is the keystone species.
Answers
Answer:
The keystone species is the wolf.
Explanation:
Every species of organism is important to the ecosystem, so if just one species gets extinct for whatever reason there will be consequences for the other species. How big the consequences will be, depends on the species and on how big of an effect it has on the ecosystem. Some species have relatively small importance, while some have huge importance, and the ones that have huge importance are called keystone species.
The keystone species have such big importance to an ecosystem that with their presence everything is under control, but if they go extinct then the ecosystem suffers badly and changes dramatically. In this case, a keystone species is the wolf. The wolves control the elk population, which in turn means that there is no shortage of food for the elk and they don't damage the young trees. By not damaging the young trees, they grow, so there is a much larger area covered by forest. More forest means less erosion, the water of the streams is better controlled, and there is less meandering. If the wolves are out of the picture, as they were for some time, the picture is totally opposite.