Answer:
D) chemoautotrophs
Explanation:
Chemoautotrophs are cells that create their own energy and biological materials from inorganic chemicals.
In nature, “autotrophs” are organisms that don’t need to eat because they make their own biological materials and energy. This term comes from the Greek “auto” for “self” and “troph” for “to eat” or “to feed.”
Autotrophs form the basis for all food chains: they are the organisms which create sugars, proteins, lipids, and other materials for life. All other organisms survive by eating autotrophs, or other organisms that are fed by the autotroph food chain.
The two major types of autotrophs are chemoautotrophs and photoautotrophs. Photoautotrophs use energy from sunlight to make their biological materials. These include green plants and photosynthesizing algae.
This flow chart may be useful in determining whether an organism is an autotroph, and if so, which kind it is:
Troph flow chart
Chemoautotrophs, on the other hand, derive energy for their life functions from inorganic chemicals. They feed on chemicals that are good electron donors, such as hydrogen sulfide, sulfur, or iron.
Like all autotrophs, chemoautotrophs are able to “fix” carbon. They take atoms of carbon from inorganic compounds, such as carbon dioxide, and using it to make organic compounds such as sugars, proteins, and lipids.
Chemoautotrophs are commonly found in environments where plants cannot survive, such as at the bottom of the ocean, or in acidic hot springs.
Some types of chemoautotrophs also play critical roles in plant-based ecosystems. Although plants perform carbon fixation in these ecosystems, many plants rely on chemoautotroph bacteria to fix nitrogen, which is necessary to make amino acids and proteins.
Function of Chemoautotroph
Basis of Ecosystems Without Sunlight
Chemoautotrophs form the basis of the energy pyramid for ecosystems where photosynthesizers can’t survive. Without chemoautotrophs, life would only be able to exist where energy could be derived from sunlight.
They are the basis of some deep sea ecosystems, such as those existing around deep sea hydrothermal vents.
Scientists have speculated that chemoautotrophs could form the basis of life on planets which receive less sunlight than earth.
Nitrogen Fixation
One type of chemoautotroph, Nitrosomonas, plays the crucially important role of fixing nitrogen in the soil of some ecosystems. Like most chemoautotrophs, Nitrosomonas can take toxic chemicals – in this case ammonia – and turn it into materials for life.
Nitrosomonas harvests nitrogen from ammonia, and fixes it into organic compounds which can then be used to produce amino acids, proteins, and other crucial materials for life.
Possible Origin of Life
We have no fossils of the first cells on Earth, so we are not able to say at this time what they were like. We know that they had to be autotrophs, since they would have had to produce all of their own organic materials.
Some scientists think that the first cells were likely photoautotrophs, deriving energy form sunlight – but other scientists think the first cells may have been chemoautotrophs, and that photosynthesis may have evolved later.
If true, this would make all of us descendants of chemoautotrophs!
Examples of Chemoautotrophs
Nitrosomonas
Nitrosomonas is a genus of nitrogen-fixing bacteria.
As you may have guessed, “nitrogen fixation” means taking nitrogen from inorganic compounds, such as ammonia, and assembling it into organic compounds, such as amino acids.
Nitrogen fixation is crucial for many ecosystems, even some which rely primarily on plants. Many plants cannot fix their own nitrogen – meaning that they require nitrogen-fixing bacteria in the soil, or they cannot obtain the nitrogen compounds they need to live.
Nitrogen fixation is an extremely important concept in agriculture, where many crops cannot perform nitrogen fixation themselves. To ensure that the soil contains enough organic nitrogen compounds to grow, farmers much either make sure that there are enough nitrogen-fixing bacteria present to sustain their crops, or add artificial nitrogen compounds in the form of fertilizers.
Of note, some nitrogen-fixing bacteria have developed permanent symbiotic relationships with certain plant species. These include the symbiotic bacteria found in nodules on the roots of “nitrogen-fixing” plants such as legumes. However, these nitrogen-fixing bacteria are not chemoautotrophs, as they have evolved to rely upon their plant hosts for food. They are no longer autotrophs, as they are no longer able to feed themselves.
Other types of nitrogen-fixing bacteria remain independent, and are still chemoautotrophs.
Rachel wants to develop a lamp that will work using a remote control which statement best describes the process she should use
The given question is incomplete as it lacks the group of statements require to answer from, however, the correct group of statements is as follows:
A. She should use scientific investigation because she will need to analyze the results.
B. She should use technological design because she will need to design an experiment.
C. She should use scientific investigation because she will need to communicate her findings.
D. She should use technological design because she will need to build a prototype.
Answer:
The correct answer would be - option D. She should use technological design because she will need to build a prototype.
Explanation:
Rachel wants to develop a remote-operated lamp that can work by controlling by remote for that she needs to make a prototype to understand the technology and technical aspect of the product she wanted to develop.
Prototypes are technical designs or pictures that help in understanding the problems earlier about the product and can be solved by avoiding such issues in early models or protoptypes.
Answer:
Get a smart bulb from best buy
Explanation:
A eukaryotic cell always has this unique characteristic?
cytoplasm
O membrane
nucleus
ribosomes
Answer:
A membrane-bound nucleus
Explanation:
eukaryotic cells are defined by the presence of a nucleus surrounded by a complex nuclear membrane. also, eukaryotic cells are characterized by the presence of membrane-bound organelles in the cytoplasm.
Which of these landforms is created due to deposition?
A Cirque
B Fjord
C Horn
D Sandbars
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Answer: Sandbars
Explanation: Sandbar, also called Offshore Bar, submerged or partly exposed ridge of sand or coarse sediment that is built by waves offshore from a beach. The swirling turbulence of waves breaking off a beach excavates a trough in the sandy bottom.
Answer:
it is sandbars
Explanation:
Wave erosion also deposits sand, which can make spits (beach(es) that projects out into the water as a result of deposition) and build up sandbars (long ridges of sand that build up off the coastline as a result of deposition).
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what does this quote mean?
Answer:repeat or copy out (a group of words from a text or speech), typically with an indication that one is not the original author or speaker.
Explanation: An example of a quotation is when you take a passage from Shakespeare and repeat it as written without changing any of the words. The prices or bids cited.
Which of the following processes in the water cycle causes the formation of clouds?condensation evaporation infiltration transpiration
Answer:
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Explanation:
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Condensation
Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is a apart of the water cycle because it is responsible for the formation of cloud.
If a cell begins the cell cycle with 46 chromosomes, how many chromosomes will be in each of the two daughter cells produced by cell division?
Answer:
4
Explanation:
what happen to dory when she tries to enter the anemone
Answer:
it "stung her" or shocked her. CLownfish have special thgs on their scales to let them enter.
Explanation:
What is the chemical formula of the first carbohydrate shown?
Answer:
The chemical formula for carbohydrate is carbon, oxygen and hydrogen, the number of atoms varies on what carbohydrate. Carbohydrate general formula is CnH2nOn" e.g: Glucose - C6H12O6. Carbohydrates consist of the elements carbon, hydrogen and oxygen with a ratio of hydrogen twice that of carbon and oxygen...
Explanation:
A skydiver jumped out of a plane. she falls downward at a very fast speed. when she opens her parachute, she slows down. what force pulled the sky driver to the ground
a. friction
b. gravity
c. air resistance
d. parachute pull
Answer: Well Gravity pulls her to the ground but it was air resistnace that slowed her down.
Answer:
gravity
Explanation:
Which is not true?
Basaltic magma has a low viscosity and retains little gas.
Andesitic magma has both an intermediate gas content and explosiveness.
An increase in temperature increases a magma's viscosity.
An increase in silica increases the viscosity of magma.
Answer: An increase in temperature increases a magma's viscosity.
Explanation: Lower temperature magmas have higher viscosity than higher temperature magmas (viscosity decreases with increasing temperature of the magma).
The molten or semi-molten matter that is found underground and forms igneous rocks is called magma. It is very hot and is found in the lithosphere of the Earth's surface.
The answer is :
Option C. An increase in temperature increases a magma's viscosity.
This can be explained as:
The Basaltic magma has low gas content and viscosity because of this non-explosive eruptions occurs.Andesite magma has strong explosion forces and the gas content is intermediate.The greater degree of polymerization is due to high silica content.Therefore, an increase in the temperature does not increase the viscosity of magma.
To learn more about Basaltic magma and Andesitic magma follow the link:
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Can anyone answer this its urgent...
srrry if the cropping is bad
Answer:
The answer for this question is the ureotelic
Answer:
b?
Explanation:
Should water (H20) be included in the model as a reactant or product? If so, how should it be included?
A. Yes, as reactant A.
B. Yes, as product B.
C Yes, as reactant C
D No, it should not be included.
Explanation: a is right
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1.If a DNA molecule has 40% Cytosine, what percent of it would be Adenine?
2.Please help describe the base-pairing rules in any DNA molecule
Answer:
The correct answer is -
1. Adenine - 10%
2. A-T and C-G always in DNA.
Explanation:
1. The total amount of all nitrogenous bases are equally 100% and which includes an equal amount of C and G and an equal amount of A and T in the DNA molecule.
So, Cytosine = 40%, Guanine= 40%
total = 80%
therefore, the A and thymine would be - 100 - 80 = 20
A+T = 20
A= 10, and, T = 10%
2. The complementary base pairing rule explains that DNA base pairs are Adenine always binds with thymine and cytosine bind with guanine only. Purine binds with pyrimidine always except - A-C or G- T.
What is a wave?
A. a circular path for energy
B. a back and forth or up and down motion
carrying energy
C. a straight line of matter
D. a material that transfers energy
Answer:
B.
Explanation:
when deforestation occurs in an area what immediate effect does this haveon the water cycle?
Answer:
When deforestation occurs, precious rain is lost from the area
Explanation:
Trees improve water quality by slowing rain as it falls to the Earth, and helping it soak into the soil. Trees then serve as natural sponges, collecting and filtering rainfall and releasing it slowly into streams and rivers. Tress are the most effective land cover for maintenance of water quality
In which of the following categories does the pictured organism belong?
HELP ASAP MARKING BRAINLIEST HURRY HURRY
Answer:
THe answer is C
Answer:
c
Explanation:
Plants are called producers because they make their own food. Just like us, plants use their food for energy to respond, grow,
develop and reproduce. Which substance in this model is food for the plant?
-0)
A)
soil
B)
water
c
oxygen
D)
glucose
Answer:
D Glucose
Explanation:
17.
A main function of the digestive system is to -
O
A.
generate white blood cells to destroy any harmful bacteria in food.
B.
generate hormones that are used to stimulate the release of waste.
C.
utilize the lungs for the exchange of carbon dioxide and oxygen.
D.
utilize the small intestine to absorb nutrients from digested food.
Answer:
D
Explanation:
The main function of the digestive system is to break down and absorb foods and nutrients and digest food.
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Weathering is a process in the rock cycle. How does weathering contribute to the formation of rocks?
Here are the answers
It increases the temperature and creates metamorphic rock.
It deposits sediment and forms sedimentary rock.
It breaks down rock into smaller pieces that can become sedimentary rock.
It causes lava to cool and harden into igneous rock.
Answer:
It breaks down rock into smaller pieces that can become sedimentary rock.
Explanation:
Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.
The process of weathering is very important for the formation of rocks because it breaks down rocks into smaller pieces.
By virtue of this, these tiny rock pieces called sediments are gathered and assembled together through erosion. They are then taken away and deposited in basins where they are transformed into sedimentary rocks. This is a very vital process in the rock cycle.What type of isotopes are termed radioactive isotopes?
The radioactive isotopes of an element are called radioisotopes.
The number of protons in the atomic nuclei of different isotopes of the same element is the same, but the number of neutrons varies. The radioactive isotopes of an element are called radioisotopes. They can alternatively be described as atoms with surplus energy in their nucleus or unstable neutron-proton combinations.An isotope will become radioactive if the neutron to proton ratio exceeds a certain threshold or the atomic number is higher than 83.According to the idea, an isotope will become radioactive if its atomic number is higher than 83 or if the neutron-to-proton ratio rises over one or becomes excessively large.Gamma rays, beta particles, and alpha particles are the three types of radiation that are released. Typical instances of radioactive isotopes are Arsenic−74, Iodine−131 and Cobalt−60.learn more about radioactive isotopes here: https://brainly.com/question/18640165
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A biologist is finished collecting data about the feeding habits of black bears from wilderness areas and from human-populated areas.
Which parts of a scientific process should the biologist do next?
The biologist should analyze the data.
The biologist should form a hypothesis.
The biologist should make conclusions.
The biologist should communicate the results.
Answer:
they should analyze data
The biologist should analyze the data in the next part of the scientific process. Therefore, the correct option is A.
What is a scientific process?A scientific process is a systematic approach to answering questions and solving problems through the use of scientific methods. It involves a series of steps that are designed to help scientists investigate and understand the natural world.
After finishing the data collection process, the next step in the scientific process is to analyze the data. This involves organizing and interpreting the data to identify any patterns, trends, or relationships that may exist between the variables being studied.
Hence, the biologist should analyze the data, make conclusions, and communicate the results. Therefore, the correct option is A.
Learn more about scientific process, here:
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The question is incomplete, but most probably the complete question is,
A biologist is finished collecting data about the feeding habits of black bears from wilderness areas and from human-populated areas.
Which parts of a scientific process should the biologist do next?
A. The biologist should analyze the data.
B. The biologist should form a hypothesis.
C. The biologist should make conclusions.
D. The biologist should communicate the results.
This passage best supports which conclusion about dark matter?
Answer:D
Explanation:
The passage talks about how it's gravity disrupts the path of light
Name an item you might be able to reuse in a new way rather than throw it in the trash, and explain its new use.
Answer: plastic bag and use it to carry things.
Explanation:
Brainliest
Explanation:
You ca take pollution like all types of plastic ans reuse it ti make braceletes ot necklaces and lots of other things.
which isotope would tou use to date a full wooly mammoth
Answer: Carbon-14
Explanation: Scientists have determined that some of these mammoths died nearly 40,000 years ago using a technique called radiocarbon (Carbon-14) dating.
what are your thoughts about human population?
Answer:
As the human population continues to grow, the more resources we consume and use on earth. We need to slow it down, we highkey breeding like rabbits and in many places overpopulation is already a problem. As the population rises, all our problems we have grow as well. World hunger grows as there are more people on earth and we can't feed all of them. more people = more pollution.
Explanation:
Overpopulation is an undesirable condition where the number of the existing human population exceeds the actual carrying capacity of Earth. Overpopulation is caused by a number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which result in overpopulation. It is possible for a sparsely populated area to become densely populated if it is not able to sustain life.
Growing advances in technology with each coming year has affected humanity in many ways. One of these has been the ability to save lives and create a better medical treatment for all. A direct result of this has been the increased lifespan and the growth of the population.
In the past fifty years or so, the growth of the population has boomed and has turned into overpopulation. In the history of our species, the birth and death rates have always been able to balance each other and maintain a population growth rate that is sustainable.
At the root of overpopulation is the difference between the overall birth rate and death rate in populations. If the number of children born each year equals the number of adults that die, then the population will stabilize.
Talking about overpopulation shows that while there are many factors that can increase the death rate for short periods of time, the ones that increase the birth rate do so over a long period of time.
The discovery of agriculture by our ancestors was one factor that provided them with the ability to sustain their nutrition without hunting. This created the first imbalance between the two rates.
Fatal Effects of Overpopulation
1. Depletion of Natural Resources
2. Degradation of Environment
3. Conflicts and Wars
4. Rise in Unemployment
5. High Cost of Living
. Extinction
1. __________________ are the basic building blocks of all matter, living and nonliving. They are made up of subatomic particles (__________________, __________________, __________________).
Answer: Atoms are the basic building blocks of all matter, living and nonliving. They are made up of subatomic particles (neutrons, protons, and electrons)
Explanation:
Hope thats correct and helps! :)
the six kingdom system was desgined to account for great variation in the kingdom that contained the?
Answer:
A system of naming organisms using a 2 part names to label the species. The binomial name is written in Latin and is known as the scientific name
Explanation:
easy 1 multiple choice question in the picture. (30 points)
Answer:
If cytokinesis did not occur during mitosis the cytoplasm wouldn't be divided and there wouldn't be two identical daughter cells as a result.
) The stem of a plant is growing upward while the roots grow downward. Which of these stimuli correctly describes the response of the plant?(1 point) touch light gravity temperature
Answer:
The correct answer is ''gravity.''
Explanation:
Tropisms are movements or changes in posture that a living being normally makes in response to a continuous environmental stimulus. Plants have hormones that respond to the gravitational impulse of our planet. Gravity deeply influences their growth and development (positive geotropism) and plants have been found to bend in response to gravity due to redistribution of the plant hormone auxin at the root tip, so that auxin is redistributed to the underside of a root that grows when it is rotated 90 degrees, the stems will still grow upward, away from the center of the Earth (negative geotropism), just as roots will always grow in the reverse direction (positive geotropism).
Answer:
The correct answer is gravity
Explanation:
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Why is mosa called to mrs.newtons supermarket?
Answer:
I dont know why
what's the answer