Pectinate muscles are found on the Multiple Choice external wall of the right atrium. posterior walls of the right and left ventricles. posterior wall of the right ventricle. internal walls of the right and left atria. anterior wall of the right ventricle.

Answer:

Most eels live in the shallow waters of the ocean and burrow into sand, mud, or amongst rocks. They also like to eat mosquito larvae and worms

Explanation:

Step 1. Observation: There are more hurricanes in the summer and fall.Step 2. Question: Why do hurricanes only occur in the summer and fall? Step 3. Hypothesis: Hurricanes only occur in the summer and fall because of the high sea surface temperatures that cause a convection current and create the necessary wind conditions for hurricane formation.

Step 4. Prediction: If hurricanes only occur in the summer and fall because of the high sea surface temperatures and wind conditions created by a convection current, then we would expect to see more hurricanes in areas with warm water temperatures during the summer and fall seasons.

Step 5. Experiment: To test this prediction, researchers could compare sea surface temperatures and hurricane frequency data for various regions in different seasons. They could also monitor hurricane formation and intensity in regions with varying water temperatures throughout the year.

If the data show a correlation between warm sea surface temperatures and hurricane frequency in the summer and fall, it would support the hypothesis that hurricanes only occur during these seasons due to the necessary convection currents and wind conditions.

Step 6. Testing the prediction: Collect the data and analyze it. See if the data supports or disproves the hypothesis. If the data supports the hypothesis, then it provides evidence that hurricanes only occur in the summer and fall due to the necessary convection currents and wind conditions created by warm sea surface temperatures.Step 7. Iteration:

While the hypothesis provides a plausible explanation for why hurricanes only occur in the summer and fall, it is important to note that there are many other factors that can influence hurricane formation and intensity, such as wind shear and atmospheric pressure. Therefore, the hypothesis may need to be refined as more research is conducted.

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The gills of the axolotl are covered with filaments, which enhance the surface area. This is advantageous since surface area directly relates to the volume of gas exchanged. Hence increases the rate of diffusion of oxygen.

Many aquatic species use their gills as respiratory organs to take in dissolved oxygen from the water and expel carbon dioxide. Some species, like hermit crabs, have modified their gills to enable breathing on land as long as the environment is kept moist.

The axolotl gets its distinctive appearance and oxygen from a few feathery, external gills located on either side of the skull. Although adult axolotls have lungs, they mostly breathe through their gills.

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Leaving the lights on is one of the most obvious energy-wasting habits, and it's also one of the simplest to break. You can save electricity and help your lightbulbs last longer by simply turning off the lights when you leave a room or your home.

To save energy, it's important to put off lights when not in use.

In physics, energy is the empirical property which is transferred to a body or a physical system and is visible in the form of heat and light. The law of conservation of energy asserts that energy can be converted in form but cannot be created or destroyed.

The following are required to conserve energy;

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Answer:

Being endothermic

Explanation:

Humans are not cold-blooded and we don't photosynthesise so only the second option applies to humans;

We produce heat internally within our bodies so we are endotherms, i.e. warm-blooded;

We shiver and have thermogenesis through metabolism to generate heat to keep body temp up and also sweating and physiological mechanisms to cool out bodies down.

A substrate interacts with an enzyme to generate an enzyme-substrate conformational change that resembles a key capable of matching to a particular lock in a door.

Enzyme specificity refers to the ability of an e3znyme to bind to a particular substrate in order to catalyze a chemical reaction. This binding lead to the formation of the enzyme-substrate complex where the substrate matches with the enzyme at the active site in a similar way to a lock and a key.

Therefore, with this data, we can see that enzyme and substrate are very specific and they interact in a similar way to a key and a lock in the door.

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The sequential development of the renal structures within the intermediate mesoderm can best be described as the formation of three successive kidneys: the pronephros, the mesonephros, and the metanephros.

The pronephros is the first kidney to develop in the embryo, but it is short-lived and non-functional. It is replaced by the mesonephros, which is functional for a brief period of time during embryonic development. Finally, the metanephros develops and becomes the permanent kidney, which is functional throughout the rest of the individual's life.

This sequential development is important for the proper formation and function of the kidneys, which are responsible for filtering waste from the blood and regulating fluid and electrolyte balance in the body.

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Answer:

evolution

Explanation:

this reflects the adaptations of organism to their changing environments

The process in which populations change over time is evolution, the change in the characteristics of a species over several generations and relies on the process of natural selection.

Natural selection is the method through which denizens of living organisms adapt and modify. peoples in a population are inherently variable, meaning that they are all various in some ways.

This divergence means that some people have traits nicely suited to the environment than others.

Thus, The process in which populations change over time is evolution,

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Answer:

b. 0.145 meters

divide the length by 1000

Answer:

Respiratory rate of that person.

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Thanks!! friend...

Answer:

There will be an extra chromosome in the offspring thereby leading to aneuploidy

Explanation:

Please see the attached file

c. 10-fold. The number of microbes in the human body is ten times more than the number of human cells. Microorganisms, however, play a crucial role in maintaining human health despite only making up 1 to 3 % of a body's bulk due to their microscopic size.

Genetically, humans are 99.9% identical.Insertions, deletions, & substitutions inside the DNA sequence are responsible for the 0.1% difference.Single Nucleotide Polymorphisms are the name for these substitutions (SNPs).Every 1000 base pairs, they appear.

3 billion genetic base pairs, or building blocks, make up our bodies and define who we are.And only a small portion of the those three billion base pair are particular to us, making the remaining 99.9% of humans genetically identical to us.

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Answer:

yes it is a useful mechanism

The feature of the genetic code that ensures that the translation of a single mRNA sequence will always result in the same amino acid sequence is the codon-anticodon pairing.

Codons and anticodons match up during protein synthesis to create the polypeptide chain. There are 20 amino acids in proteins, and 64 different codons exist in the genetic code. The genetic code is read in a 5′ to 3′ direction. The first nucleotide in the codon is located on the 5′ end of the mRNA, whereas the last nucleotide is located on the 3′ end of the mRNA.

The genetic code is degenerate, which means that more than one codon corresponds to the same amino acid. The only exceptions are methionine and tryptophan, which have just one codon that codes for them. As a result, the codon-anticodon pairing guarantees that a single mRNA sequence will always result in the same amino acid sequence.

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Answer: The correct answer is the letter B. Cell membrane.

Explanation: Cell membranes are present in both plants and the animal cell where it provide structural support and protection. The cell wall is only present in plant cells where it provides strength and protection against osmotic pressure. The nucleus works like the cell's control center and regulates cell activities. It is also where the cell's DNA is located.

Mutation have made DNA repair more efficient

with time , as the bacteria have become resistant, the researchers have been able to elevate the level of radiation to which they exposed the bacteria mutations . The study took a deep dive into the mutations they have collected after 50 cycles (meaning the bacteria were irradiated 50 times).While the total mechanisms, such as increased DNA repair, are the same as in naturally resistant bacteria, many of the mutations that caused those changes have never been seen before mutations . Bruckbauer added  that beyond DNA repair and changes to RNA polymerase, there are whole new ways of being resistant that could arise.

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The relative proportions of heritable variants in a population are changed over numerous generations to measure evolution. Only heritable qualities can be changed through natural selection.

Populations are affected by natural selection. In terms of genetic evolution, people do not evolve. Although while individuals might change, natural selection works by changing the traits of the population as a whole.

Natural selection may result in speciation, the process by which one species gives rise to another that is utterly separate. It is one of the mechanisms that propels evolution and contributes to the understanding of the variety of life on Earth.

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Answer:

the answer would be D

Explanation:

Answer:

d

Explanation:

The process that harvests energy from sunlight to rearrange molecules into sugar is called photosynthesis.

Photosynthesis is the metabolic process by which plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose (sugar) and oxygen. It is a vital process for life on Earth as it serves as the primary means of converting solar energy into chemical energy that can be used by organisms.

During photosynthesis, light energy is captured by pigments such as chlorophyll in the chloroplasts of plant cells. This energy is used to drive a series of chemical reactions that result in the synthesis of glucose. The process involves the absorption of carbon dioxide from the atmosphere through tiny openings called stomata on the leaves, and the release of oxygen as a byproduct.

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Photosynthesis is the process by which plants and certain other organisms convert energy from sunlight into chemical energy in the form of glucose. This energy can be used immediately or stored for later use by cells. ATP and NADPH are key molecules involved in this energy conversion and storage process.

In the process of photosynthesis, energy from the sun is harvested by plants and used to convert carbon dioxide and water into glucose. ATP (Adenosine Triphosphate) and NADPH (Nicotinamide Adenine Dinucleotide Phosphate) are created in the initial process called light-dependent reactions. These molecules, which temporarily store energy, are subsequently used in the light-independent reactions to rearrange carbon dioxide (CO2) molecules into glucose, a type of sugar.

The glucose molecules produced via photosynthesis can then be used by cells as a form of cellular energy, either immediately or stored for later use. The energy from a glucose molecule is harvested in a series of complex chemical reactions within the cell, ultimately resulting in the production of additional ATP, which is used to power further chemical reactions within the cell.

This process of photosynthesis, which converts sunlight into usable cellular energy, is a key biological system that supports life on Earth. It is not only applicable to plants, but also to other organisms like photoautotrophs that can also capture energy from light and convert it into usable bioenergy.

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Answer:

C

Explanation:

due to all the other questions come naturally that stresses the ecosytem

Answer:

plants are multicellural so they are made from different cells

Answer:

Eukaryotic cells

Explanation:

1. Plant and animal cells are eukaryotic, meaning that they have nuclei. Eukaryotic cells are found in plants, animals, fungi, and protists.

Tiger frogs have similarities in their mitochondrial DNA that are not shared by other frog species

Answer:

I believe the answer is D.

Explanation:

Hope this helps! ^^

Generally, for fast-dividing mammalian cells, the length of the cycle is approximately 24 hours. G1 is typically the longest phase of the cell cycle. Cells usually remain in G1 for about 1o hours of the 24 hours of the cell cycle. Usually, cells will take between 5 to 6 hours to complete S phase. G2 is shorter, lasting only 3 to 4 hours in most cells. In sum, then, interphase generally takes between 18 to 20 hours. Mitosis, during which the cell makes preparations for and completes cell division only takes about 2 hours.

From the given figure, mitosis takes 15 % of the 24 hours cell cycle. Plese see solution below:

24 hours x 15 / 100 = 3.6 hours

Answer: Mutualism

Explanation: The relationship between the crab and the sea anemone describes mutualism, a type of symbiotic relationship.

Mutualism describes the ecological interaction between two or more species that benefits both; typically involving the exchange of substances or services between both.

It plays a key role in ecology and is thought to have driven the evolution of much of the diversity currently in existence today.

When geneticists study the variations in phenotype for a single genotype that occur over a range of environmental conditions, they are observing phenotypic plasticity.

:Phenotypic plasticity is the ability of one genotype to produce more than one phenotypic trait based on environmental factors.

When geneticists study the variations in phenotype for a single genotype that occur over a range of environmental conditions, they are observing phenotypic plasticity.The main answer is: Phenotypic plasticity.

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For a recessive allele to manifest, two copies of it must exist.

A recessive phenotype can only be caused by two copies of a recessive allele, one from each parent. An individual with the dominant phenotype will have one dominant allele and one recessive allele for a given gene. A particular gene will only be expressed in an organism if it has two recessive alleles.

One copy of the dominant allele is all that is required for the manifestation of a dominant trait. The effects of the other allele are hidden by the dominant allele. An individual with two copies of a dominant allele often exhibits the same phenotype as an individual with only one copy.

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Answer:C is the answer

Explanation:

Answer:An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position

Explanation:

Answer:

Cell Division and Cancer. Cancer cells are cells gone wrong — in other words, they no longer respond to many of the signals that control cellular growth and death.

Explanation: