Answer:
the answers are;
1. Theodor Schwann
found that animals are composed of cells
2. Matthias Schleiden
found that plants are composed of cells
3. Robert Hooke
looked at cork through a compound microscope
4. Rudolph Virchow
declared that all living cells can only come from other living cells
5. Anton van Leeuwenhoek
called living cells “animalcules”
hope this helps! plz put me as the brainiest!
is limestone an acid or base
Answer:
it's a base
Explanation:
has pH of 9.9
Which of the following human actions is LEAST likely to increase soil erosion?
Answer:
tilling
Explanation:
What is the meaning of permeable
Answer:
allowing liquids or gases to pass through it.
Explanation:
Hope this helps
A collision between which two types of crust will most likely produce a mountain range?
Answer:
Be more specific
Explanation:
Answer:
A convergent boundary
Explanation:
Convergent boundaries are pieces of crust that collide against each other. They push upwards, and that land that is pushed upwards is a mountain. Mount Everest is a good example. It was made in two tectonic plates, and since these plates are still pushing upwards to this day, this mountain grows around 40 cm each year. I hope this helps!
why do we need to know science or the nature of science?
Answer:
A fundamental reason for teaching about the nature of science is to help our students to think for themselves and reach their own explanations and conclusions in ways that consider the scientific dimensions of socio scientific issues
Explain why an igneous might be found with large, well-formed crystals.
Explanation:
When magma cools within the Earth, the cooling proceeds slowly. Slow cooling allows time for large crystals to form, so intrusive igneous rocks have visible crystals.
have a great day
how does the microscope shape the world of science especially in biology today?
Answer:
Explanation:
The microscope allowed us to see a whole new world that was not so long ago unknown of even existing to us. We can study normal cells, abnormal cells, a whole microcosmos of one-celled organisms. We now know what organisms cause what diseases and by using a microscope that was all made possible. Today they are used for education and scientific work with finding new organisms and developing a plethora of new cures.
The structure of DNA is a double helix
True
False
Answer:
true
Explanation:
Answer:
Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
Explanation:
Please answer this quick I’ll give brainliest
Retina provides a sense of vision.
Select one:
a. False
b. True
One argument in response to the "Commons" idea is that private land ownership will prevent a "tragedy" from happening. Based on the article, do you agree or disagree? Why?
Answer: agree
Explanation:
The common argument which is based on shared assets and the behavior of each individuals.
When the land ownership becomes private a tragedy is avoided as each individual treats the land with care and caution, unlike when it’s a common( shared) where they all don’t care what happens to the land or it’s aftermath so far they all gain personally. So yes when it’s a private land then and then do they truly prevent any tragedy associated with common to happen.
12. Two teams of scientists hiked 10 kilometers to different study sites. Before their hike, the Valley
team ate a lunch of mostly protein. The Mountain team ate a lunch of a mix of starch and protein, but
hiked at high altitude, where there is much less oxygen. Which team probably had an easier time
hiking?
a
Both teams had an easy time hiking because their digestive systems broke down proteins
into amino acids for cells to release energy.
b
Neither team had an easy time hiking: the Valley team's cells needed more glucose from
broken-down starch for a reaction, and the Mountain team's cells needed more oxygen from
air.
С
The Mountain team had an easier time hiking: their cells released energy from protein
reacting with glucose, which was broken down from starch in the digestive system.
d
The Valley team had an easier time hiking; their cells released energy from protein breaking
down in the digestive system, which then combined with oxygen in cells.
Answer: B. Neither team had an easy time hiking; the Valley team's cells needed more glucose from broken-down starch for a reaction, and the Mountain team's cells needed more oxygen from air.
Explanation:
Before the hiking by the scientists, we are told that the Valley team ate a lunch of mostly protein while the Mountain team ate a lunch of a mix of starch and protein, but hiked at high altitude, where there is much less oxygen.
Based on the above, none of them had an easier time hiking. This is because since the cells of the Valley team who mostly ate protein, need glucose in order for a reaction to occur. For the Mountain team, even though they are a mixture of starch and protein, they went higher which reduced where there was less oxygen. This will have resulted in a hard time for them.
Therefore, neither had a easy time hiking. The correct option is B.
How could this be possible since the Kansas well was so far away from the Wyoming lake or river?
A.Pollution traveled through the surface water to reach the well.
B.Both locations where the toxic pollution was found were along the same river.
C.Both locations are located in the same watershed.
D.None of the above
Answer:
C.Both locations are located in the same watershed.
Explanation:
D. None of the above
I think it should work, hopefully it does!!
Bobby completed a gym workout today. He focused on his upper body, completing biceps curls, triceps dips, pull-ups, and chest presses.
a. support
b. protection
c. movement
d. communication
Answer:
c
Explanation:
Which symbol represents a cell dividing by mitosis
Answer:
Answer: There is no concluded symbol for a cell dividing by mitosis but if you want to study and work hard then read books and you might find a clue in there about the questions you have. Try talking to your teachers about questions you have or questions you can't find on the internet or in books. But I really doubt that will happen often. Have a wonderful rest of your day.
Explanation:
Answer:
2n ----> 2n is the symbol
Chloroplasts contain chlorophyll a, chlorophyll b, and carotenoids. Why is this important in the process of photosynthesis? Support your answer with facts.
Answer:
Explanation:
Photosynthesis is the process by which green plants synthesize their food from carbon dioxide and water by using the green pigment chlorophyll generating oxygen as product.
Chlorophyll "a " absorbs light from the orange-red and violet-blue areas of the Electromagnetic spectrum. Also Chlorophyll a transfers energy to the reaction center and donates two excited electrons to the electron transport chain
Its main role is as a primary electron donor in the electron transport chain. So the energy from the sun will ultimately become chemical energy that can be used by the plant for cellular processes.
Chlorophyll "b" absorbs blue light. The main role is to expand the absorption spectrum of organisms.
Plant can absorb more energy from the high frequency blue light part of the spectrum. Its presence in cells helps plant convert a wider range of the energy from the sun into chemical energy.
Carotenoids are usually red, orange, or yellow pigments, and include the compound carotene. These compounds are composed of two small six-carbon rings that are connected by a "chain" of carbon atoms. As a result, they do not dissolve in water, and must be attached to membranes within the cell. Carotenoids cannot transfer sunlight energy directly to the photosynthetic pathway, but must pass their absorbed energy to chlorophyll. For this reason, they are called accessory pigments.
Answer:
The presence of chlorophyll a, chlorophyll b, and carotenoids in chloroplasts allow plants to absorb more energy from sunlight by absorbing multiple wavelengths. Chlorophyll a absorbs blue-violet light and red light. Chlorophyll b absorbs mostly blue light. Carotenoids absorb violet, blue, and blue-green light. The pigments together, therefore, are able to absorb a wider range of wavelengths.
Explanation:
^edge sample answer
Researchers say that 2,000 bats live in a well. The average wingspan of each bat is seven inches. Imagine that all the bats line up in a straight line, wing to wing. The length of the bats will equal the length of how many soccer fields? Assume that a soccer field is 4,680 inches long.
Answer:
With a wingspan stretching 15 to 16 inches and a total body length of 5 ... Due to its large size and dense fur coat, the hoary bat is also the most hardy, ... The wings of most other bats in Montana are hairless and their ears are long. What's more, “the fast, straight flight of the hoary bat makes it easy to identify on the wing,”
Explanation:
Hope this helps
Most biological macromolecules contains carbon. Which organic compound, used for stored chemical energy, contains carbon, hydrogen, oxygen, and will sometimes contain and phosphate group
A.) Lipid
B.) Carbohydrate
C.) Protein
D.) Starch
Lipid is an organic compound that is used for stored chemical energy, contains carbon, hydrogen, and oxygen, and will sometimes contain a phosphate group. Thus, the correct option for this question is A.
What are Macromolecules?Macromolecules may be defined as types of molecules that are large, complex, and typically formed due to the association of two or more smaller units known as monomers with the help of intermolecular forces. Examples of macromolecules include proteins, carbohydrates, nucleic acids, lipids, etc.
Lipids are generally composed of carbon, oxygen, and hydrogen, as well as nitrogen, phosphorus, sulfur, and other elements. These macromolecules are utilized in order to store long-term energy. Carbohydrates are known to supply immediate energy to the body.
Therefore, the organic compound used for stored chemical energy contains carbon, hydrogen, and oxygen, and will sometimes contain the phosphate group known as lipids. Thus, the correct option for this question is A.
To learn more about Macromolecules, refer to the link:
https://brainly.com/question/3680582
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Select the correct answer from the drop-down menu.
The fossil in the picture is a trilobite that lived about 500 MYA. So, the age of the rock in the picture is
million years old.
At MOST 500
I use Edmentum an I got it right.
The correct answer is option A i.e. at least 500million years ago.
what are fossils?
Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. Fossils also include any preserved trace of life that is typically more than 10 000 years old.
There are five types of fossils:
Body FossilsMolecular FossilsTrace FossilsCarbon FossilsPseudo fossilsso, this trilobite existed around 500 million years ago and million years ago.it is confirmed that the rock might have been formed way before the trilobite fossil that has been formed. It is needed not that the rock has formed during the formation of fossil itself. So we can safely say that the rock is at least 500 million years ago.
To know more about fossils here
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14. The direction water moves across a cell membrane depends on the
concentration of what on either side of the cell membrane?
Answer:
Explanation:
The level of concentration as moving from a area of high concentration to a low concentration until equaliburm is reacted so from a area that has a lot of the desired contain to a area of which lack that desired contain
Traditional classifications tended to take into account primarily -
(A.) Extinct organisms
(B.) RNA similarities
(C.) DNA similarities
(D.) Visible similarities and differences
answer all three for brainly!
Answer:
A
C
D
NOT SURE IF CORRECT
SORRY
Explanation:
Plz help! Its due in like 10 mins!!
HELP
Answer:
c.
Explanation:
It is showing the size of Earth's layers. There is nothing here about its chemical composition or Earth's temperature.
please help i’m stuck
Answer:
its b
Explanation:
Minerals are often found in the shapes of crystals.
True
or
False
Answer:
False
I hope this helps!
PLS HELP, NO IDEA WHAT IT MEANS!!!! What type of reaction will occur when sodium carbonate is added to the pool water to return its pH to the normal range, and what are the typical products of this type of reaction? (4 points)
Answer:
An electrolysis reaction, if the salt is added to the water then it just dissolves. When electricity is run through it, it creates chlorine gas as well as NaOH and hydrogen gas.
Explanation:
Hope this helps :)
what is the number of chromatids in each chromosome at cytokinesis
Answer:
46
Explanation:
1 How do animals receive their necessary nitrogen?
2. Why can't plants use nitrogen gas directly?
3. Explain why bacteria are essential parts of the nitrogen cycle.
Explain what might have happened to make a drop of salt water from the ocean become a drop of freshwater in Falls Lake?
Answer:
Evaporation
Explanation:
The drop of salt water is heated by the sun. The H2O molecules start to move faster and the liquid water becomes a gas. The salt is left behind as the water droplets are carried in a cloud. Then they fall as rain which is freshwater.
Which of the following are functions of a lipid?
A) Hold genetic information
B) Do most of the jobs in the cell
C) long term energy, insulation and cushion organs
D) short term energy and structure
Answer:
Some of the functions of lipids are to provide long term energy, insulation and cushion organs.
Explanation:
Lipids are biomolecules —predominantly formed by carbon and hydrogen— of great importance to the body, since they are the main component of cell membranes and form part of the structure of necessary organic substances, such as hormones.
Within the functions of lipids are found:
Being a reserve energy source, which can be used in the long term. Body lipids serve as thermal insulators, especially when they are found under the skin. The lipids can cushion the internal organs that they cover, protecting them from trauma by body movement or external trauma.the other options are not correct because:
A. The nucleic acids are the ones that store the genetic information.
B. Lipids are an important component of the cell, but they do not do most of the cell's work.
D. They are not a short-term energy source, like carbohydrates.
Credibility is essentially the believability of the study, and it is determined by both the trustworthiness and expertise of the researcher. Recently, concerns have arisen over Nalgene drinking bottles and the chemicals they may be releasing into the water. Two scientists publish their findings. One who works for a major Nalgene producing company, the other does not. Which scientist is more credible?
Answer:
The scientist who has no conflict of interest is, in principle, more reliable
Explanation:
All scientific publications must include a Declaration of Interest (also known as Disclosure Statement) by which authors state that there's no personal or financial interest that might be affecting the objectivity of their investigations, results and conclusions. If no conflict exists, the author should indicate that "there is no conflict of interest". In this case, the scientist who works for a Nalgene producing company should state that it is a potential conflict of interest.