They created stromatolites, which added oxygen to the atmosphere.
Autotropic prokaryotes :Prokaryotes that can reproduce independently produce organic compounds from carbon dioxide. Heterotrophic prokaryotes, in contrast, get their carbon from organic substances. The terminologies that describe how prokaryotes receive carbon and energy can be combined to further complicate the picture.
Phototrophs, which are autotrophic organisms that transform solar energy into chemical energy, first appeared within a billion years after the birth of the Earth.
Autotrophic eukaryote :Since plants can produce their own sustenance, they are referred to as autotrophs. Through the process of photosynthesis, plants create glucose using water, carbon dioxide, and solar energy. Some protist species also use photosynthesis to produce energy.
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the four kinds of cell communication (between two different cells) based on the distance from source to receptor are: direct contact, signaling, signaling, and signaling.
The four kinds of cell communication (between two different cells) based on the distance from source to receptor are: direct contact signaling, paracrine signaling, autocrine signaling, endocrine signaling.
What is autocrine signaling?When a cell releases a ligand that binds to receptors on its own surface, it is signaling to itself in an autocrine manner or autocrine signaling (or, depending on the type of signal, to receptors inside of the cell). Although doing this may seem strange for a cell, autocrine signaling is crucial for numerous activities.
For instance, autocrine signaling plays a crucial role in development by assisting cells in assuming and maintaining their correct identities. From a medical perspective, autocrine signaling is significant in cancer and is believed to be crucial for metastasis. A signal frequently binds to the sender cell as well as other nearby cells that are comparable, having both autocrine and paracrine effects.
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Kate and Sam are using a scanning electron microscope to study photosynthesis in algae. Which is the benefit of this type of microscope compared to a light microscope?
Scanning electron microscope is better than light microscope to study photosynthesis in algae.
The light microscope is an instrument for visualizing great detail of an object. It does this by way of developing a magnified image via the use of a sequence of glass lenses, which first attention a beam of light onto or via an object, and convex lenses to increase the picture fashioned.
Light microscopy is used to make small structures and samples seen by way of supplying a magnified photo of the way they interact with visible light, e.g., their absorption, reflection and scattering.
Lenses form the picture goal lens gathers light from the specimen eyepiece transmits and magnifies the photo from the goal lens for your eye nosepiece rotating mount that holds many objective lenses tube holds the eyepiece on the proper distance from the goal lens and blocks out stray light.
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Some individuals are unable to digest the lactose found in the milk of cows. The digestive systems of these individuals most likely lack which of the following?
A.
a lipid that coats lactose molecules
B.
an ability to produce lactose internally
C.
an enzyme that catalyzes lactose breakdown
Some people cannot digest the lactose found in milk. This person's digestive system is deficient in any of the following. The ability of the body to produce lactose.
Sugar is found in milk. It is a disaccharide containing glucose and galactose units. When a person with lactose intolerance consumes dairy products, lactose from these components can enter the intestines and cause gas, cramps, bloating, and diarrhea. Some people can eat small amounts of dairy without any problems. Others have stomach problems and want to avoid all dairy products. Signs of lactose intolerance include nausea, cramps, gas, bloating, or diarrhea within 30 minutes to 2 hours after drinking milk or dairy products. Symptoms occur because the scaffold does not produce enough lactase to digest the ingested lactose.
Lactose is one of the main components of human and animal milk. As a disaccharide containing glucose and galactose, lactose has a fortifying effect on milk. Eggs are not mammals and come from birds, including chickens, ducks, or quails that do not currently produce milk. Eggs are rich in protein and contain many essential vitamins and minerals. They no longer contain lactose, so they can be eaten by people with lactose intolerance and who are allergic to eggs.
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Why do scientists think gases such as CO2 trap heat in the atmosphere?
Greenhouse gases are more complex than other gas molecules in the atmosphere, with a structure that can trap heat. Greenhouse gas molecules in the atmosphere absorb light, preventing some of it from escaping the Earth.
Carbon dioxide is Earth's most important greenhouse gas that works for absorbing and radiating heat. Greenhouse gases absorb heat radiating from the Earth's surface and even circulate it in all directions including back toward Earth's surface.
Carbon dioxide in the atmosphere warms the planet, causing climate change. Human activities have raised the atmosphere's carbon dioxide content by 50% in less than 200 years.
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In fermentation, what do cells use instead of oxygen
to break down glucose?
a. Carbon dioxide
b. Water
c. Lactic acid
d. Nitrogen
Answer:
Answer:sugarExplanation:In the absence of oxygen, the cell uses a process called anaerobic fermentation.
More energy can be from fat molecule than from glucose molecule because the fat molecule contains more
Answer: Hope this helps.
Explanation: Triglycerides store about twice as much energy as carbohydrates. Triglycerides are made of glycerol and three fatty acids. Because there are so many carbons in three fatty acids, and each 2-carbon unit can enter the citric acid cycle, one fatty acid molecule can generate much more ATP than one molecule of glucose.
Answer:
because the fat molecule contains more kilocalories per gram
Skin cells and bone cells have the same DNA, but ______ genes activated.
A.none of the
B.all of the
C.different
D.the same
Answer: C.different
Explanation: because they are not all the same
Answer:
Yea,my girl apaytonk26 is RIGHT.
Your answer is (C.) Different.
Explanation:
Hope this helped you !Have a great day and don't forget to give Apaytonk26 BRAINLIEST!!!!
9. Students studying the hydrologic cycle plan to use several rain gauges to compare
average annual precipitation in several Texas stare parks. Which of these variables
should be the independent variable?
In the experiment, the independent variable is the type of rain gauge.
What is an experiment?We know that an experiment involves the dependent and the independent variable. The dependent variable would change in value as we continue to alter the value of the independent variable.
Now we are told that the students are trying to study the hydrologic cycle plan to use several rain gauges to compare average annual precipitation in several Texas stare parks as required in the question above here.
In this case, the independent variable that we need to study is the type of rain gauge.
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Article of plastic in the ocean.
Why or how does the article occur ?
Also provide a brief personal reflection on the article that you have given me
Earth's last sink for plastic waste, the oceans, receive the majority of it from the land. Major rivers operate as conveyor belts, gathering up debris as they flow downstream and carrying it to the ocean. Many pieces of plastic waste that are floating at sea stay in coastal waters.
Why is plastic in the ocean happening?Plastic garbage is transported through drains, streams, and rivers by wind and rain. Ocean access is via drains! Another significant factor is careless and incorrect garbage disposal; unlawful rubbish dumping significantly contributes to the plastic pollution of our oceans.Being such a persistent contaminant, plastic waste is particularly harmful. Decomposition of plastic products might take hundreds of years. Both people and animals are at risk from this garbage. In the debris, fish become entangled and hurt, and some animals mistakenly eat things like plastic bags thinking they're food.To learn more about : Plastic pollution
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What is an example of positive feedback?
A) A computer screen dimming when the battery gets low.
B) A herd of buffalo running away after one of them spots a lion.
C) A pressure cooker valve opening to reduce the high pressure inside.
D) A thermostat switching on an air conditioner when the temperature gets too hot.
Using food pyramids, explain why a vegetarian diet is more "ecologically responsible."
The responsibility to preserve and protect the environment is known as ecological responsibility. The majority of the time, ecological responsibility is related to businesses making sure that their operations always abide by environmental laws and regulations.
Explain about vegetarian diet is more Ecologically responsible?People can drastically minimize their consumption of land, water, and oil resources as well as the amount of pollution they might otherwise generate by selecting a vegetarian diet rather than one high in animal products.But when the study's 153 vegans, vegetarians, and omnivores were all included in, it became clear that eating meat was, on average, worse for the environment. When we think about food crops, there are other broad issues to keep in mind that could have a greater negative influence on the ecosystem.According to a thorough peer assessment of studies on vegetarianism, a non-meat diet will probably result in a person emitting less carbon dioxide than they would with a meat-based diet—roughly 1,200 pounds less carbon dioxide. That translates to a mere 4.3% reduction in emissions for the average person living in industrialized nations.
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From your experience in this lab, discuss how
humans have carried out the same practice as
Adam in terms of plants.
Now out of the ground the LORD God had
formed every beast of the field and every bird of
the heavens and brought them to the man to
see what he would call them. And whatever the
man called every living creature, that was its
name. The man gave names to all livestock and
to the birds of the heavens and to every beast
of the field.
Answer:
zz
Explanation:
In what phase of meiosis are tetrads of homologous pairs lined up along the center of the cell and attached to the spindle fibers?
Anaphase I
Metaphase II
Metaphase I
Anaphase II
Answer:
Metaphase I
Explanation:
Hope this helps.
Using food pyramids, explain why a vegetarian diet is more "ecologically responsible."
In comparison to a meat-based diet, a vegetarian diet uses less land and water and emits less greenhouse gases. As a result, it is frequently regarded as a greener choice.
What can you eat on vegetarian diet?Choose a range of healthful tree foods, such as whole vegetables and fruits legumes and nuts, and whole grains, to make the most of a vegetarian diet. Reduce consumption of unhealthier options including refined grains, fruit juices, and beverages with added sugar.
What is a true vegetarian diet?A vegetarian does not consume any meat at all, not even fish or fowl. The diet of a lacto-ovo vegetarian includes both dairy and eggs. A lacto vegetarian consumes dairy but avoids eggs. Ovo vegetarians consume eggs but not dairy.
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Who believed intelligence consisted of one general factor, called "g," underlying all mental abilities?
O Robert Sternberg
O L.L. Thurstone
O Charles Spearman
O Howard Gardner
“Why is there so much peat in the peat/perfrost system? Minimum of 5 sentences
PLEASE HELP
There is so much peat in the peat /perfrost system as a result of the low oxygen concentration in the environment which leads to incomplete decomposition occurring.
What is a Peat?This substance has a soft and dark brown property and is formed from partially decaying organic matter and dead substances present in a long period of time.This could take a certain period of years and are also rich in carbon content.
Perma frost is referred to an area which is located on land or under the ocean in areas where there is a low concentration of oxygen as result of certain factors and properties.
Since we are aware that peat is formed partially decaying organic matter under low oxygen concentration, then it is therefore the reason why there is so much peat in the peat/perfrost system and is therefore the correct choice.
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what number represents the subscriot 5h2
True or false? data showing that the bacteria were the first lineage to diverge from the common ancestor of all living organisms suggest that the archaea and eukarya are more closely related to each other than they are to the bacteria.
True, the archaea and eukarya are more closely related to each other than they are to the bacteria
The archaea, eukarya and bacteria are described by the Woese's tree of life.
What is Woese's tree of life?
This is a unique research program developed by Carl Woese, it is based on rRNA, for discerning bacterial relationships and constructing a universal tree of life. Woese's interest in the evolution of the genetic code led to him to investigate the deep roots of evolution, develop the concept of the progenote, and conceive of the Archaea.
The tree indicates that the common ancestor for eukarya and archaea is more recent than the common ancestor for all three domains.
Eukarya are therefore more closely related to the archaea than is to the bacteria.
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What is the structure labeled A in the cells above?
Answer:
Mitochondria
Explanation:
The chaparral biome is best characterized by _______. a. large, contiguous regions of shrubland b. small regions interspersed with other biomes c. large noncontiguous regions interspersed with other biomes d. the animals dwelling in it please select the best answer from the choices provided a b c d
''a. large, contiguous regions of shrubland'' are the characteristics of the chaparral biome.
What are the characteristics of the chaparral biome?
Chaparral is a type of woodland that is characterized by a combination of dry soil, warm weather, and short and hardy shrubs. The chaparral biome is dominated by short types of woody plants instead of grasses that are present in the grassland biome or tall trees which are present in forest biomes. The chaparral is unique and present on the Pacific coast of North America. Chaparral is a temperate biome that is characterized by hot-dry summers, and mild and rainy winters. Nearly all of the rainfall occurs in the winter and spring rainy seasons at the Chaparral.
So we can conclude that the chaparral biome is best characterized by large, contiguous regions of shrubland.
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What does the ecosystem send te outside world?
Healthy ecosystems protect our soil, clean our air, regulate the temperature, recycle nutrients, and provide us with food. They provide resources and raw materials for the manufacture of pharmaceuticals and other products.
How do ecosystems benefit us?Ecosystem services sustain human existence by supplying nutritious food and clean water, controlling disease and climate, assisting in crop pollination and soil formation, and giving recreational, cultural, and spiritual benefits.
We rely on healthy ecosystems to accomplish a variety of tasks, like purifying the air so we can breathe correctly, sequestering carbon for climate management, cycling nutrients so we can obtain clean drinking water without costly infrastructure, and pollinating crops so we don't go hungry.
These services, also referred to as ecosystem services, include supplying resources such as food and water, preserving ecosystems that sustain biodiversity, giving chances for recreation, and assisting in the regulation of human-caused consequences such as climate change.
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what impacts on the lion food web would occur if the prey hunted was no longer available
Answer:
If an organism is removed from the food chain, it spoils the flow of energy and nutrient in the ecosystem. It disrupts the balance of the food chain. As a result, the organisms which depend on others for food will die due to starvation.
Explanation: Hope this helps ya'..! :)
i’m humans,having wet earwax is dominant triat. having dry ear was is reccesive. A woman has two recessive alleles. What is her phenotype?
Answer:Her phenotype is to have wet earwax
No, the woman has 2 dominate traits and the man has 1 recessive, they need atleast 1 each
Explanation: Hope it helps
Read each statement below. If the statement is true, write the word true in the space provided. If the statement is
false, write the word false in the space provided.
1. Circadian rhythms in plants and animals are based on Earth's rotation of about 24 hours.
Tive
2. The lithosphere is made up of the solid part of the upper mantle and the crust.
3. Studies of seismic waves suggest that the lithosphere is probably more rigid than the
asthenosphere.
4. P-waves travel faster through liquids than through solids.
5. According to Newton's law of gravitation, the force of attraction between any two objects
depends on the weight and temperatures of the objects.
6. Rays of the Sun that strike the Earth at near 90° produce the greatest amount of heat.
7. When the Southern Hemisphere experiences summer, the Northern Hemisphere
experiences winter.
8. In a standard time zone, the Sun is highest over the center of the zone at Noon.
9. A satellite in polar orbit passes over a different portion of the Earth's surface with each orbit.
10. The orbits of communication satellites are geosynchronous orbits.
Biological alterations known as circadian rhythms take place on a 24-hour cycle. The final or fourth choice among the possibilities listed in the question is the one that should be selected. This kind of mechanism is present in cyanobacteria, fungi, mammals, plants, and other organisms.
True, True, False, True, False, False, True, True, True, False.
What is Circadian rhythms ?A circadian rhythm, also known as a circadian cycle, is a normal, endogenous process that controls the cycle of sleep and wakefulness and occurs roughly every 24 hours. It can be used to describe any process that starts inside an organism and reacts to its surroundings.
The several types of circadian rhythm abnormalities include shift work or jet lag disorder, irregular or non-24-hour sleep-wake rhythm disorder, and advanced or delayed sleep-wake phase problem. Depending on your sleep and awake patterns, you might have a certain type.
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Select all the algebraic expressions equivalent to a3b3
[Anatomy, Articulations Homework] The special movement of drawing a back a "jutted out" mandible is known as?
The special movement of drawing back a "jutted out" mandible is known as erotrusion.
A jutted out mandible is called protrusion. The opposite of protrusion is retrusion. The movement of a structure in a posterior, or backward, direction, is what is meant by this term. Retrusion in anatomy might manifest as putting your tongue back in your mouth, pulling your lips back, or pulling your jaw back.
Prognathism is sometimes known as a Habsburg jaw or a prolonged chin. Prognathism typically refers to an excessive protrusion of the lower jaw.
Depending on which jaw is impacted, prognathism can result in either an overbite or an underbite. Prognathism could be a symptom of a medical disease that has to be treated.
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in the diagram at the right, in which dirextion will these molecules initially diffuse
A. from right to left
B. from left to right
C. they will not move at all
D. they will move in both directions equally
the molecules initially is diffuse from the right to left
hii please help i will give brainliest to whoever is correct! :)
Answer:
Answer down below!
Explanation:
Answers ranging from top to bottom:
GlucoseCarbon DioxideWaterOxygenassuming that there were no time constraints on replication of the genome of a human cell, what would be the minimum number of origins that would be required? if replication had to be accomplished in an 8-hour s phase and replication forks moved at 50 nucleotides/second, what would be the minimum number of origins required to replicate the human genome? (the human genome has a total of 6.4x 109 nucleotides)
Answer:
46 origins
Explanation:
there were no time constraints on replication, one origin would be required for each chromosome; thus, a minimum of 46 origins, equal to the number of chromosomes in a human cell, would be needed.
Facilitated transport does not require the cell to use energy because moving molecules from areas of
higher concentration to areas of lower concentration is powered by diffusion.
Is this statement True or False?
Answer:
Facilitated transport does not require the cell to use energy because moving molecules from areas of
higher concentration to areas of lower concentration is powered by diffusion.
True
Explanation:
Answer:
True
Explanation:
The Statement is true because, diffusion involves the movement of individual molecules of a substance through a semipermeable barrier/membrane from a region of high concentration to a region of lower concentration without energy as a requirement.