You discover a new organism and analyze its DNA. If you find 40% of nucleotides are G, which of the following is true: 20% are A 10% are A 20% are C 10% are C

Answer:

False

Explanation:

In DNA double helix molecule, there are four types of nitrogenous bases: adenine, guanine, cytosine and thymine. Purines (i.e., adenine, guanine) and pyrimidines (i.e., cytosine and thymine) hold DNA strands together via hydrogen bonds. In base pairing, guanine always pairs with cytosine through 3 hydrogen bonds, while adenine always pairs with thymine by 2 hydrogen bonds. Hydrogen bonds are a type of dipole–dipole interaction where a hydrogen atom is covalently bonded to a very electronegative atom (e.g., Nitrogen or Oxygen).

The correct answer is A. Biomass produces no radioactive waste. This is a major issue, since radioactive waste could have severe damages in the environment or even become a threat to human health.

Krebs cycle occurs in the matrix of the mitochondria and requires oxygen.

Krebs cycle is a series of enzymatic reactions that occurs in all aerobic organisms. It involves the oxidative metabolism of acetyl units, and serves as the main source of cellular energy.

The Krebs Cycle is also called the citric acid cycle. After glycolysis breaks glucose into smaller 3-carbon molecules, the Krebs cycle transfers the energy from these molecules to electron carriers, which will be used in the electron transport chain to produce ATP.

Krebs cycle specifically requires the presence of oxygen to occur, hence, is termed an aerobic process.

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If there is no rain, the Arizona poppy would not be able to perform the light-dependent reactions of photosynthesis.

Photosynthesis is a process that involves two main stages: light-dependent reactions and light-independent reactions.

Water is required in the light-dependent reactions to provide the electrons that are needed to generate ATP and NADPH, which are then used in the light-independent reactions to produce glucose.

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The nutrient which provide more energy is C. Lipids

Among the given options, lipids provide the most energy per unit mass. Lipids, also known as fats, are a concentrated source of energy in the diet. When metabolized, lipids yield approximately 9 kilocalories (kcal) of energy per gram.

Carbohydrates, including sugars and starches, provide approximately 4 kcal of energy per gram. They are a readily available source of energy for the body, particularly for short-term energy needs. Proteins also provide approximately 4 kcal of energy per gram. However, their primary role is not as an energy source but rather as the building blocks for tissues, enzymes, and other important molecules in the body.

Vitamins, on the other hand, do not provide significant energy. They are essential for various biochemical processes in the body but do not contribute directly to energy production.

It is important to note that while lipids provide the most energy per gram, the overall balance and variety of nutrients in a diet are crucial for maintaining optimal health. Nutrient needs vary based on individual factors, such as age, sex, activity level, and overall health goals. Therefore, Option C is correct.

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Answer:

have similar elocogical requirements

Each trophic level has a smaller amount of organisms or biomass than the one below it because it is only absorbing 10% of the energy from the lower level, so there is not enough energy to sustain larger numbers.

The correct option would, therefore, be D.

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D. They are located in the petrous part of the parietal bones.

The cervical, thoracic, and lumbar vertebrae are located in the spinal column, not in the petrous part of the parietal bones. The other three statements (A, B, and C) are correct and describe the structure of the cervical, thoracic, and lumbar vertebrae.

The parietal bones are a pair of flat bones located in the human skull, on either side of the cranial vault. They form the largest part of the skull's roof and contribute to the sides and top of the cranial cavity, which protects the brain. The parietal bones are connected to other bones in the skull, such as the frontal bone, the temporal bones, and the occipital bone, to form the cranial vault. In addition to protecting the brain, the parietal bones also play a role in supporting the skull and aiding in the transfer of weight from the skull to the spinal column.

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Answer:

B: Plant pollen is the only one included.

Answer:

The third-most biodiverse nation in the world is South Africa. It is recognized for having a high endemism rate and is home to more than 95,000 identified species. In addition, the nation is home to a wide variety of biomes, including forests, deserts, estuaries, and marine ecosystems.

Explanation:

Answer:

basic

Explanation:

ph value 9 base is ph value is 9and 20

Answer:

Someone wants to have smoke in the air at a laser show because It's the dust particles or mist droplets which reflect the light of the laser. When you see a laser beam, what you are seeing is the beam being scattered by various small particles suspended in the air. ... When people want to show off laser beams, they often add smoke or equivalent to the air.

Answer:

This is such a werid question to ask :/

Explanation:

Answer:

The hydrotropism: A plant grows only in one direction in response to a stimulus or gradient in water content.

2.The condition known as homeostasis: Our body helps to maintain homeostasis by cooling itself by sweating.

3.Complexity in Order: Tissues, organs, and organ systems make up a cat. Tissues are made up of cells that are similar to one another.

4.The reproduction: When bacterial cells divide, they form two identical cells; this is caused by binary fission.

5.Utilization of Energy: Cells require an external source of energy to produce energy, just like humans do.

6. Evolution: the process by which new species of living things grow out of old ones.

The roots of plants play a role in the absorption of water from the soil and have evolved a number of adaptive traits, such as hydrotropism, to help them forage for water. Root growth is altered by hydrotropism to respond to a soil-to-soil water potential gradient and move toward areas with more moisture.

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Answer:

magnitude and direction

The hypothesis is; Increasing the concentration of fertilizer will lead to an increase in plant growth.

The variables to be tested are; concentration of fertilizer and plant growth.

A hypothesis is a speculative claim or explanation put forth based on scant data and used as a springboard for additional research or trial. It is an educated guess or testable prediction regarding the correlation between two variables or phenomena.

By manipulating the concentration of fertilizer as the independent variable and measuring the resulting plant growth as the dependent variable, we can test the hypothesis and determine if there is a correlation between fertilizer concentration and plant growth.

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Answer:

If the mass of an object decreases, the weight of an object will decrease.

The use of hydroelectric power in the United States is limited because it can only be used in areas with specific kinds of rivers.

Hydroelectric power is electric power which is generated from water.

The kinetic energy of motion of water is converted to electrical energy when the turbines of a dynamo are turned by the moving water.

Hydroelectric power has limited application because it requires the area to have large water bodies.

Therefore, the use of hydroelectric power in the United States is limited because it can only be used in areas with specific kinds of rivers.

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Scientists sometimes make discoveries that lead to a need for new laws. the big idea of biology do these situations illustrate in biological systems.

A biological system is a group of organs working together to perform a not unusual characteristic. as an example, the muscular gadget is worried about movement, the skeletal gadget gives safety and assistance, and the circulatory system offers nutrients and waste to and from the cells of the body.

Organic structures are the breathing system, digestive system, and circulatory gadget. The human frame includes the subsequent structures: respiration machine – liable for one of the crucial features in any living organism, respiratory, and gas trade.

A biological system is a complex network that connects numerous biologically relevant entities. the organic company spans numerous scales and is decided based on totally special systems.

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Answer:

2:0:0:2

Explanation:

Answer:

The limbic system is the part of the brain involved in our behavioural and emotional responses,

Explanation:

hope that help

Answer:

Climate change is the global phenomenon of climate transformation characterized by the changes in the usual climate of the planet (regarding temperature, precipitation, and wind) that are especially caused by human activities

Humans are increasingly influencing the climate and the earth's temperature by burning fossil fuels, cutting down forests and farming livestock. This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming. Humanity’s increased use of fossil fuels – such as coal, oil and gas to generate electricity, run cars and other forms of transport, and power manufacturing and industry

Deforestation – because living trees absorb and store carbon dioxide

Increasingly intensive agriculture – which emits greenhouse gases like methane and nitrous oxide

Answer:

Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.

Explanation:

Question 1 Answer: Increases genetic variation

Question 2 Answer: Faster Reproduction rate and Requires less energy (it is more time and energy efficient as a mate is not required)

Answer:

magnetism and fluorescence

Explanation:

edge

Answer:

In CONVECTION, heat energy is carried by the movement of particles of matter. In CONDUCTION, heat is transferred by particles vibrating. In RADIATION, heat is carried directly by electromagnetic waves. When a hot object touches a cool object, heat moves from the hot one to the cool one.

Explanation:

Movement of heat by a fluid such as air is carried out by convection and through electromagnetic via radiation.

Heat is transferred by a fluid, such as water or air, by convection. As the fluid (liquid or gas) flows from one place to another, it also transfers heat. A current is the term used to describe the flow of heated water or air. 

Radiation occurs when heat transfers directly from one source to another object as infrared energy waves. This is how the Sun's heat reaches Earth. In actuality, all heated objects emit heat toward colder objects. The molecules of the colder item accelerate as the heat waves impact them. The thing becomes hotter as its molecules move more quickly.

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Human activity has caused trophic cascades in several species, with one notable example being the reintroduction of gray wolves to Yellowstone National Park in 1995.

Prior to their reintroduction, the park's ecosystem had suffered due to the absence of wolves, as their absence had allowed the elk population to grow unchecked, resulting in overgrazing of vegetation and a decline in biodiversity.

Once the wolves were reintroduced, they began to prey on the elk, which reduced the elk population and allowed vegetation to recover. As a result, the habitat of other species, such as beavers, songbirds, and even fish, improved, as they were able to utilize the newly regenerated vegetation.

This is a classic example of a trophic cascade, where the removal or addition of one species can have a cascading effect on the rest of the ecosystem.

Human activities such as hunting, deforestation, and pollution have disrupted many ecosystems, causing trophic cascades that can have far-reaching consequences for biodiversity and ecosystem functioning.

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The complete question is:

When did human activity affect a few species and cause them to trophic cascade?