What is the Difference between the digestive system of humans and rabbits

Answer:

Sections of DNA are more similar in organism more closely related

Cytochrome c is used to provide evidence for evolution because most animals have this protein and is has undergone very little changes in these organisms such that more closely related species have the most similarity in amino acid sequence of cytochrome c

Explanation:

Cytochrome c is a protein found in mitochondria and is an important enzyme in cellular respiration. Cytochrome c is a highly conserved (have undergone very little changes) protein that in found in many different species of organismsmsuch as plants, animals, and many unicellular organisms. Cytochrome c is made up of about 104 amino acids linked together by peptide bonds. Being a small-sized molecule (molecular weight about 12,000 daltons) also makes it easier for evolutionary studies to be conducted on it.

Organisms that are most closely related have the most similarity in the amino acid sequence of the cytochrome c molecule. The amino acid sequences in cytochrome c molecule present in organisms is as a result of the information in their DNA.Thus, sections of DNA are more similar in more closely related organisms.

Based on the inheritance pattern in the pea plants;

The possible genotype and phenotype of the offspring of the pea plants, in which purple flowers (P) are dominant to white (p) are given below:

Purple flower = PP

white flower = pp

Also,  since the purple color is dominant over the white color, the genotype, Pp will have the phenotype of purple color.

The cross = PP x pp

The offspring = Pp, Pp, Pp, Pp

The possible genotype is Pp

The possible phenotype is purple

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Answer:  The answers are as follows:

Where does the Calvin cycle occur and does it need light?

Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts).

Where does photosynthesis get its energy to start?

The whole process of photosynthesis is a transfer of energy from the Sun to a plant. In each sugar molecule created, there is a little bit of energy from the Sun, which the plant can either use or store for later.

What is the chemical equation for cellular respiration?

The equation for cellular respiration is: C6H12O6 + 6O2 → 6CO2 + 6H20 + energy (Glucose + Oxygen yields Carbon Dioxide + Water + Energy) You may notice that the equation for cellular respiration is the opposite of the equation for photosynthesis.

What are the reactants and products of lactic acid fermentation? What is the basic equation?

The simple equation for lactic acid fermentation is glucose ---glycolysis---> 2 pyruvate ---fermentation--> 2 lactic acid. That is to say that glucose is broken down by glycolysis into 2 pyruvates, and then those pyruvates are fermented to produce 2 lactic acid molecules.

How is citric acid formed in the Krebs cycle?

The Krebs cycle itself actually begins when acetyl-CoA combines with a four-carbon molecule called OAA (oxaloacetate) (see Figure above). This produces citric acid, which has six carbon atoms. This is why the Krebs cycle is also called the citric acid cycle.

What are the steps in cellular respiration?

There are three main steps of cellular respiration: glycolysis, the citric acid cycle, and oxidative phosphorylation. Glycolysis takes place in the cytosol, the citric acid cycle occurs in the mitochondrial matrix, and oxidative phosphorylation occurs on the inner mitochondrial membrane.

The energy for glycolysis comes from which molecule?

Glycolysis is a series of reactions that extract energy from glucose by splitting it into two three-carbon molecules called pyruvates.

During which step of cellular respiration is carbon dioxide released?

The stage of cellular respiration in which carbon dioxide release takes place is the citric acid cycle. Aerobic cellular respiration has three steps, glycolysis, the citric acid cycle, and the electron transport chain.

What are the products and reactants of cellular respiration?

During cellular respiration, the reactants—glucose (sugar) and oxygen—combine together to form new products: carbon dioxide molecules and water molecules.

Explain how ectotherms and endotherms regulate their body temperature.

Endotherms use internally generated heat to maintain body temperature. Their body temperature tends to stay steady regardless of the environment. Ectotherms depend mainly on external heat sources and their body temperature changes with the temperature of the environment.

How do humans control their body temperature using ATP?

The muscle contractions of shivering release heat while using ATP. The brain also triggers the thyroid gland in the endocrine system to release thyroid hormone, which increases metabolic activity and heat production in cells throughout the body.

In 3-5 sentences explain how the environment would affect the photosynthetic process of a rainforest plant versus a desert plant. Consider the amount of sunlight and water available in each environment.

The environmental factors that would be more important to a rainforest plant would be sunlight and carbon dioxide. This is because rainforests are shadier and there would be less sunlight for the plant to get, which could cause the plants to get taller in order to reach the sunlight. However, in the desert, the plants would be more dependent on water and carbon dioxide.

Dragonflies are flying insects. In the summer, dragonflies can be seen perched on tree branches in an obelisk pose (i.e., a handstand position with the tip of their abdomen pointing upward). In 3–5 sentences, describe how dragonflies might control their body temperature and give reasons for why they might perch in this pose.

The powered flight regulates body temperature and obelisk posture helps to prevent overheating due to the sun. Dragonflies control their body temperature with the help of controlling metabolic heat production by alternately using powered flight as well as controlling heat loss by changing the circulation between the thorax and abdomen. The dragonflies raised their abdomen until its tip pointed to the sun in order to minimize the surface area exposed to solar radiation so that powered flight regulates body temperature and obelisk posture helps to prevent overheating due to the sun.

Explanation:  Hope this helps!  :)

Answer:

1. The Calvin cycle is the light-independent (does not need light) step of photosynthesis and happens in the stroma.

2. Light

3. C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy

4. Pyruvic acid + NADH → Lactic acid + NAD+

5. Glycolysis - Krebs Cycle - Electron Transport Chain

6. ATP

7. Reactants are glucose and oxygen, products are carbon dioxide and water with energy in the form of ATP

8. Ectotherms cannot insulate (stop heat loss from) their bodies and can only control their body temperature by choice.

9. shivering

10. Environmental challenges the would affect a rainforest plant would be climate change, and drought. In the rainforest, it may become harder and harder for a plant to survive if it cannot adapt to the rapid changing of the climate, with temperatures becoming rapidly hotter and dropping just as fast, while the total lack of water would take away one of the reactants needed for photosynthesis, further lowering a plants chances for survival.

Environmental challenges that would affect a rainforest plant would be erosion, and climate change. Deserts are very sensitive when it comes to external changes to its environment, and if they already have very little rainfall, climate change could destroy plants as they would have nothing of the little resources they have to survive on. Erosion can destroy desert soil, and as it already takes a massive amount of time to grow plants, the total lack of soil could stop plant growth altogether.

11. Dragonflies are exothermic which means their bodies are warmed by their environment. They cannot easily warm their bodies themselves, so they stay warm by traveling to areas of warmth which might give reason as to why they perch in the obelisk pose. By flying, they can help regulate warmth throughout their bodies, and the obelisk posture on tree branches can ensure that they do not overheat and maintain proper body temperature.

Explanation:

Just took the test, these are correct.

Answer:

protein is a monomer of nucleic acid that help in building the Gene's in the dna

Answer:

A) B) E)

Explanation:

A) measuring the air temperature to the east of the storm system

B) measuring the barometric air pressure on both sides of the storm front

E) measuring the wind speed within the storm system

Since storms are caused by atmospheric circulation, changes in temperature, and pressure, the best metrics to use to predict the storm system's movement has to do with wind, wind direction, and pressure/temperature of the air. The ground temperature and the humidity are less important.

Answer:

A B E i agree i did a test on this. Its right

Explanation:

A) measuring the wind speed within the storm system

B) measuring the air temperature to the east of the storm system

E) measuring the barometric air pressure on both sides of the storm front

Answer:

The correct answer is - D. biological.

Explanation:

Wheathering is the process of breaking of the rocks or soil. It can be of different types on the factors such as chemical wheathering, physical wheathering and biological wheathering.

When a seed fall on to on a rock surface its sprouts, push roots into cracks in the rock or concrete. As the roots of plants develop, they secrete weak acids that slowly dissolve rock around the roots.

It is a type of biological wheathering.

Answer:

The balanced equarion is

4Fe + 3O2-------> 2(Fe2O3).

Explanation:

a) When a carrot is submerged in a diluted solution, water will osmosis into the carrot cells. As a result, the cells will become turgid and the carrot's mass will rise.

b) The carrot's inability to alter in mass when submerged in a 0.4 mol/dm3 solution shows that the solute concentration—which includes salts and sugars—within the carrot cells is also 0.4 mol/dm3. There is no net movement of water into or out of the cells at this concentration.

c) This indicates that the carrot and the 0.4 mol/dm3 solution have come to an equilibrium. At this concentration, the passage of water into and out of the cells is balanced, and there is no net gain or loss of water.

d) If the carrot is submerged in a concentrated solution, water will osmotically escape from the cells, plasmolyzing them. The mass of the carrot will shrink as a result.

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The Kyoto Protocol aims to reduce D. CO₂ emissions. The Protocol has been ratified by 192 countries.

The Kyoto Protocol is an international agreement that was adopted in Kyoto, Japan, in 1997. The Protocol commits its Parties by setting internationally binding emission reduction targets. The Kyoto Protocol's first commitment period started in 2008 and ended in 2012.

The Protocol's second commitment period began on January 1st, 2013 and will end in 2020. The Kyoto Protocol is an important step in the fight against climate change. It is the first international agreement that sets binding targets for reducing greenhouse gas emissions.  

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Answer: Study how to use a microscope

Explanation:

Answer:

1/(5⁹) or 5⁻⁹

Explanation:

This is a Mathematics question rather than a Biology question.

The given fraction is:

\(\frac{5^{-6}}{5^3}\)

This fraction can be rewritten as:

\(\frac{1}{5^6*5^3}=\frac{1}{5^9}=5^{-9}\)

Therefore, the quotient of the given fraction is 1/(5⁹) or 5⁻⁹

Answer:5^-9

Explanation:

Answer:

macrophage

Explanation:

The number of possible connections among the neurons of the brain is about 500 trillion (B).

Neurons are specialized cells that process and transmit information in the brain. Each neuron is connected to other neurons through synapses, which are the sites of communication between neurons. The number of possible connections between neurons in the brain is incredibly large.

According to estimates, the human brain has about 100 billion neurons, and each neuron can form connections with up to 10,000 other neurons. This means that the total number of possible connections in the brain is about 1 quadrillion (10^15).

However, not all possible connections are formed in the brain, and the actual number of connections is estimated to be around 150 trillion (10^14). Therefore, the correct answer to the question is an option (B) about 500 trillion.

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Answer: d. triglycerides

Explanation:

Triglycerides are a type of fat that is typically found in animal-based foods such as butter, cream, and fatty meats, as well as coconut and palm oil. They are solid at room temperature and are known to raise the levels of LDL cholesterol in the blood which can increase the risk of heart disease.

I hope this helps :)

Answer:

I think its c

I am sorry if my answer is wrong

Explanation:

Saturated fats found in animal products, such as bacon and cheese, are also called long-chain fatty acids. These fats are typically solid at room temperature and are known to increase the levels of LDL cholesterol in the blood, which can increase the risk of heart disease if consumed in excess. Saturated fats are also found in some plant-based oils, such as coconut oil and palm oil, and in processed foods like baked goods and fried foods.

Lipids are a broad group of naturally occurring molecules that include fats, waxes, steroids, and certain fat-soluble vitamins. Lipids are important components of living cells, and they play a variety of roles in the body, including energy storage, insulation, and cell membrane structure.

Fats, also known as triglycerides, are the most common type of lipid. They are composed of three fatty acid molecules and one glycerol molecule. Saturated fats, which are typically solid at room temperature, are known to increase the levels of LDL cholesterol in the blood, which can increase the risk of heart disease if consumed in excess. Unsaturated fats, which are typically liquid at room temperature, are considered to be healthier.

Waxes are lipids that are composed of long chain fatty acids and alcohols. They are used in various products such as candles, cosmetics, and food packaging.

Steroids are lipids that are composed of four fused carbon rings. They are important hormones in the body such as testosterone and estrogen.

Lipid-soluble vitamins such as vitamin A, D, E, and K are required in small amounts for good health and are stored in the body's fatty tissue.

In summary, lipids are a diverse group of molecules that play important roles in the body, including energy storage, insulation, and cell membrane structure. They include fats, waxes, steroids, and some fat-soluble vitamins, and their properties and functions vary depending on their chemical structure.

Gas and oil can be extracted from shale rock using a process called hydraulic fracturing, or fracking.

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The direction of RNA polymerase movement determines the direction of mRNA synthesis and ultimately the sequence of the mRNA molecule.

If RNA polymerase is moving left to right, the sequence of mRNA would be complementary to the template DNA strand and read from 5' to 3' in the direction of the polymerase movement. The process of transcription starts with the binding of RNA polymerase to the promoter region on the DNA template strand, followed by the unwinding of the double helix and the initiation of RNA synthesis.

During elongation, the RNA polymerase moves along the template DNA strand in the 3' to 5' direction, while adding nucleotides to the growing mRNA molecule in the 5' to 3' direction. This means that the RNA molecule being synthesized will have a sequence that is complementary to the template strand, with the bases being added in the opposite order to the template.

For example, if the template DNA strand has the sequence 5'-AGCT-3', the mRNA sequence synthesized by RNA polymerase moving left to right would be 3'-UCGA-5'.

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Answer:

from the F1 generation the cross pollination of two parent which contain all purple flower.In the F2 generation from self pollination of F1 plants and contain 75% purple flower and 25% white flowers

Answer:

Cheap and great environment/nutrients

Explanation:

Petri Dishes are filled with nutrients and a bacteria specific surface to promote quick and visible grow

Answer:

Explanation:

Protein digestion occurs in the stomach and the duodenum through the action of three main enzymes: pepsin, secreted by the stomach, and trypsin and chymotrypsin, secreted by the pancreas. During carbohydrate digestion the bonds between glucose molecules are broken by salivary and pancreatic amylase.

Answer: Iron

Explanation:

hemoglobin: The iron-containing substance in RBCs that transports oxygen from the lungs to the rest of the body. It consists of a protein (globulin) and haem (a porphyrin ring with an atom of iron at its center).

Hope This Helps! :P

Answer:

Iron!

Explanation:

There is haemoglobin, an iron complex in the middle of a red blood cell, which helps the red blood cell carry oxygen around the body!

Hope that helps!

In DNA and RNA, respectively, helix-turn-helix and zn fingers constitute secondary structural motifs. FALSE.

Translation is the main mechanism by which RNA makes proteins. Genetic information is transmitted by RNA and decoded by ribosomes into a range of proteins needed for biological processes. rna, trna, and tRNA are the three main RNA varieties involved in the production of proteins.

Ribonucleic acid, sometimes known as RNA, is a nucleic acid that is present in all living cells and has characteristics similar to those of DNA. However, unlike DNA, RNA frequently has a single strand. The backbone of a Rna is composed of alternating hydrophilic groups and the sugar ribose, as opposed to the deoxyribose found in DNA.

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The population after 40 years will be 400,000 animals, and the population after 65 years will be approximately 336,000 animals.

To determine the population after a certain time period, we can use the formula for exponential decay;

N(t) = N0 × \((1/2)^{(t/T)}\)

Where;

N(t) is the population at time t

N0 is the initial population

t is the time elapsed

T is the half-life of the population

Given;

N0 = 1.6 million

T = 20 years

Let's calculate the population after 40 years;

N(40) = 1.6 million × \(1/2^{(65/20)}\)

= 1.6 million × (1/2)²

= 1.6 million × (1/4)

= 400,000

Therefore, the population after 40 years will be 400,000 animals.

Now, let's calculate the population after 65 years;

N(65) = 1.6 million × \((1/2)^{(65/20)}\)

= 1.6 million × \((1/2)^{(13/4)}\)

≈ 1.6 million × 0.210

≈ 336,000

Therefore, the population after 65 years will be approximately 336,000 animals.

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Mitochondrial DNA analysis is a useful technique that has both advantages and disadvantages when compared to nuclear DNA analysis.

Advantages of mitochondrial DNA analysis:
1. Mitochondrial DNA (mtDNA) is present in multiple copies within a single cell, making it easier to obtain sufficient quantities of DNA for analysis.
2. Mitochondrial DNA analysis can be useful for identifying maternal lineages, which can be particularly useful in forensic and genealogical investigations.

Disadvantages of mitochondrial DNA analysis:
1. Mitochondrial DNA has a high mutation rate, which can make it difficult to accurately compare samples and determine relationships.
2. Because mitochondrial DNA is inherited maternally, it may not be useful in cases where the paternal line needs to be traced.

Advantages of nuclear DNA analysis:
1. Nuclear DNA analysis is highly accurate and can be used to identify individuals with a high degree of certainty.
2. Nuclear DNA analysis can be used to determine both maternal and paternal lineages.

Disadvantages of nuclear DNA analysis:
1. Nuclear DNA is present in only two copies per cell, which can make it difficult to obtain sufficient quantities of DNA for analysis.
2. Nuclear DNA analysis can be time-consuming and expensive compared to mitochondrial DNA analysis.

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Answer:

D

Explanation:

Took the test

Answer:

yaayya

Explanation:

Answer:

Archebacteria and Eubacteria

Explanation:

Hope this helps.

Answer:

Eubacteria (first option) & Archaebacteria (fourth option)

Explanation:

Eubacteria & Archaebacteria consist of the prokaryotic organisms.

Prokaryotes are unicelluar organisms that lack the nucleus & other organelles that are bound with the membrane.

Hope it helps ⚜

Answer:

A physical adaptation of chipmunks would be their fur thinness or thickness. If their environment demands that they need thicker fur to keep them warm, they will start to grow more fur to adapt physically to the environment.

Explanation:

The statement "The angle of the sun and the tilt of Earth's axis influence the unequal heating on Earth" is True. The angle at which the sun's rays strike the Earth's surface and the tilt of Earth's axis relative to its orbit around the sun play a significant role in determining the distribution of solar energy and the resulting temperature variations on Earth.

This phenomenon is responsible for the changing seasons and the variations in climate across different latitudes. The statement "Grassland has a lower albedo than the snow on the mountains" is generally False. Albedo refers to the ability of a surface to reflect sunlight. Snow-covered surfaces, such as mountains, typically have a higher albedo because they reflect a greater percentage of incoming solar radiation. This is due to the high reflectivity of snow, which is why snow appears bright white. In contrast, grassland surfaces tend to have a lower albedo as they absorb more solar radiation and reflect less. However, it's important to note that albedo can vary depending on factors such as snow depth, grassland vegetation cover, and surface conditions, so there can be exceptions to this generalization.

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Antimicrobial substances; bind to sugar groups on pathogen; enhance phagocytosis. The description provided aligns with the function of antibodies, which are a type of antimicrobial substance produced by the immune system.

Antibodies, also known as immunoglobulins, play a crucial role in the immune response against pathogens. Antibodies have specific binding sites that recognize and bind to antigens, which are unique molecular structures present on pathogens such as bacteria, viruses, and fungi. Some antigens contain sugar groups or carbohydrates on their surface. Antibodies can recognize and bind to these sugar groups on pathogens, marking them for destruction and enhancing the process of phagocytosis.

Phagocytosis is the process by which immune cells, such as macrophages and neutrophils, engulf and destroy pathogens. When antibodies bind to sugar groups on the surface of a pathogen, they act as opsonins, enhancing the recognition and uptake of the pathogen by phagocytic cells. This process is called opsonization and helps facilitate the clearance of pathogens from the body. Additionally, antibodies can activate the complement system, a group of proteins that work together to directly destroy pathogens or enhance phagocytosis. The binding of antibodies to sugar groups on pathogens can trigger the complement cascade, leading to the formation of membrane attack complexes that can directly lyse the pathogen or promote opsonization.

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