Select the examples of extrinsic factors that are producing macroevolutionary change.A) A few years of good weather in a region result in the loss of fewer local populations than average.B) Damage from a hurricane exterminates populations of several species in its path.C) Solar radiation causes mutations that make a population more genetically diverse.D) Gases from volcanic activity change the climate faster than many species evolve responses.E) Glaciers slowly melt and species diverge as they occupy the new habitats opening up.

Answer:

Allele: Alternative version of specific gene.

You could look around the yard and see if you could obtain the DNA specimen of the assailant.

The term forensics science refers to the area of science that deals with the study of and identification of what has transpired in a crime science. The science of forensics is a very important component of the process of investigation. This is because the process of gathering intelligence has now shifted to the use of scientific methods and advanced technology in the process. This has made it easier to solve a complex crime within the shortest possible time by the assistance of the tools that are provided by technology.

Let us assume that a crime such as murder was committed at you backyard, you could survey the area for any trace regarding the instrument that was used to commit the crime in sight. You could the collect the blood samples and the hair samples of the victim and the collect samples from the soil around and try to see if you could obtain the DNA specimen of the assailant.

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Answer:

C. Plastic handle

Explanation:

Materials that are poor conductors of thermal energy are called thermal insulators. Gases such as air and materials such as plastic and wood are thermal insulators.

Answer:

B

Explanation:

As you move up the energy pyramid, consumers receive 10% energy (Joules) from the organism they are receiving from.

When we breathe in, oxygen enters our lungs and enters small sacs in our lungs called the alveoli. In the alveoli, the oxygen diffuses INTO the bloodstream through small blood vessels, called capillaries, that surround these alveoli. The oxygen is now in our bloodstream instead of our lungs and is used in cell respiration etc.

Oppositely, carbon dioxide is diffused FROM the bloodstream TO the alveoli, also through these capillaries. The carbon dioxide is now in the lungs instead of the bloodstream and when you breathe out, the carbon dioxide is breathed out out of your lungs.

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Plants are distributed through (b) dispersal, while animals are distributed through migration in the biosphere.

Dispersal refers to the movement of plants or their propagules (seeds, spores, or other reproductive structures) away from their parent plant to colonize new areas. This can occur through various means such as wind, water, animals, or even self-propelled mechanisms.

For example, dandelion seeds have a structure called a "parachute" that allows them to be carried by the wind, enabling them to disperse and establish new populations in different locations.

On the other hand, migration of animals refers to the regular, seasonal movement of animals from one place to another. Animals migrate to find food, escape harsh weather conditions, breed, or seek better habitats. This movement can be over short distances or involve long-distance travel.

A classic example of animal migration is the annual migration of wildebeest in the Serengeti. They travel in large herds, following a cyclical pattern between Tanzania and Kenya in search of fresh grazing lands.

In summary, plants are distributed through dispersal, which involves the movement of their reproductive structures to colonize new areas. Animals, on the other hand, are distributed through migration, which refers to their regular movement from one place to another for various reasons. Hence, the correct answer is Option (b) dispersal - migration.

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E) The increased membrane permeability to sodium ions causes the fast depolarization phase of the action potential in cardiac muscle.

An opening of fast sodium channels initiates the depolarization phase of the action potential in muscle and nerve cells. This also occurs in cardiac cells that do not have pacing devices; However, the initial depolarization phase of the action potential is influenced by calcium ions in cardiac pacemaker cells.

An electrocardiogram (EKG) is an indirect indicator of heart muscle contraction because contraction of the heart muscles is caused by depolarization of the heart. Without any external stimulus, the heart's cells will depolarize. Automaticity, or autorhythmicity, is the name given to this property of cardiac muscle tissue.

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Answer:

OA

Explanation:

because it's selectively permeable

Answer:

Urticaria (Hives)

Hives are an inflammation of the skin triggered when the immune system releases histamine. This causes small blood vessels to leak, which leads to swelling in the skin. Swelling in deep layers of the skin is called angioedema.

Explanation:

Answer:

because they were extremely un-reactive. Being inert, they were difficult to isolate via chemical reactions, thus difficult to distinguish as separate elements

Explanation:

The noble gases of group 18 were the last to be discovered because they are highly unreactive or inert.

Noble gases refer to elements in group 18. These elements are renowned for being inert.

As a result of their inertness and because they are all gases, they are sometimes called "inert gases".

This chemical inertness made it difficult to discover these elements until lately. Many natural elements were discovered because they participate in chemical reactions. Hence, inert gases became the last natural elements to be discovered.

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Tropic hormones are hormones that stimulate the production or release of other hormones. They are produced by the anterior pituitary gland and act on other endocrine glands. The hormones listed above all act on other endocrine glands, so they are all tropic hormones.

The following are tropic hormones:

Cortisol, thyroxin, calcitonin, glucagon, insulin, and estrogen are not tropic hormones. Cortisol is a glucocorticoid that is produced by the adrenal cortex.

Thyroxin is a thyroid hormone that is produced by the thyroid gland. Calcitonin is a hormone that helps to regulate calcium levels in the blood. Glucagon is a hormone that helps to raise blood sugar levels.

Insulin is a hormone that helps to lower blood sugar levels. Estrogen is a sex hormone that is produced by the ovaries.

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the correct answer is A because

Physiology is the science of life. It is the branch of biology that aims to understand the mechanisms of living things, from the basis of cell function at the ionic and molecular level to the integrated behaviour of the whole body and the influence of the external environment.

Answer:

B. if both of the parents have it then most likely they have it too, they might not show it but they can carry it

The process through which plants release water vapor through their leaves is known as transpiration. This process plays a significant role in the water cycle.

The process through which plants release water vapor through their leaves is known as transpiration. This process plays a significant role in the water cycle. Explaining water vapor, transpiration and the significance of the process in the water cycle is given below: Water vapor is the gaseous state of water. When water molecules evaporate from a surface, they turn into water vapor. As the vapor rises in the atmosphere, it cools and condenses, forming clouds. When the clouds become too heavy with water droplets, they fall as precipitation in the form of rain, sleet, or snow. Transpiration is the process through which plants release water vapor into the atmosphere. It is the evaporation of water from plants through the stomata on their leaves. Transpiration helps in the uptake of water from the roots of the plant and also helps to regulate the temperature of the plant. Water vapor released through transpiration cools the leaf surface and the surrounding environment. Significance of transpiration in the water cycle: The process of transpiration plays a significant role in the water cycle. When water vapor is released into the atmosphere through transpiration, it contributes to the moisture in the atmosphere. The moisture eventually condenses and falls back to the earth as precipitation. This cycle of transpiration, evaporation, and precipitation ensures a constant supply of water to sustain life on earth. Thus, transpiration is an important part of the water cycle.

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Answer:

All systems work together to stabilize the body.

Explanation:

Certain systems work with each other in order to maintain homeostasis, which is essential for the body. For example, when blood circulates through the digestive system, it picks up nutrients absorbed by the body during its last meal. Additionally, blood carries oxygen taken in by the lungs. The circulatory system works with the respiratory system here to distribute oxygen to other parts of the body.

Answer:

The solar system is host to two broad categories of planets. The four closest to the sun — Mercury, Venus, Earth and Mars — are the terrestrial planets. They have rocky surfaces enclosed by relatively shallow atmospheres. The gas and ice giants — Jupiter, Saturn, Uranus and Neptune — are outliers. They are much larger than the terrestrial planets, but their cores are small and icy. Most of their size is formed by a combination of gases that become denser and hotter as you get closer to the core. Scientists count eight planets overall. Pluto was reclassified as a dwarf planet in 2006.

Explanation:

Transcription is mRNA synthesis, which occurs by complementing a segment of the DNA template strand. The translation is the protein growth, which occurs by adding amino acids coded by mRNA codons. C) the polypeptide is 6 amino acids long.  

The whole process of protein synthesis includes Transcription and translation.

TRANSCRIPTION

Transcription is the mRNA synthesis process and occurs in the nucleus.

The DNA template strand is read in direction 3'→ 5' to build the mRNA molecule in direction 5'→ 3'. The template strand is the one that is going to be complemented by the mRNA.

mRNA molecule has the same sequence as the DNA coding strand, but it carries uracil instead of thymine.

TRANSLATION

Translation is the process through which polypeptide grows. It occurs in the cytoplasm.

rRNA and tRNA read mRNA in the direction 5'→ 3' and add the correct amino acids to build the new protein.

Amino acids are coded by mRNA codons. Protein synthesis initiates in the AUG start codon -Metionin- and ends when reaching either of the stop codons UAA, UAG, or UGA.

In the exposed example, we have a DNA strand. We know that it is the coding strand, so it has the same sequence as mRNA molecule.

5' AATCCGTATCTATGACCGTTTGGAAACACTAAGCGGTACTC 3'

5' AAUCCGUAUCUAUGACCGUUUGGAAACACUAAGCGGUACUC 3'

Kowing mRNA sequence, we can grow the protein.

So first, we need to find the initiation codon (AUG), begining from the mRNA 5' extreme. Then we need to find a stop codon (UAA, UAG, or UGA).

5' AAUCCGUAUCUAUGACCGUUUGGAAACACUAAGCGGUACUC 3'

5' AAUCCGUAUCUAUGACCGUUUGGAAACACUAAGCGGUACUC 3'

So this protein begins in AUG and ends in UAA.

To grow the protein, we need to separate mRNA codons and find the corresponding amino acids.

According to this reasoning, the polypeptide is 6 amino acids long. Option C) is correct.

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If the pea plant has two alleles (yy) for seed color, it would be considered homozygous recessive.

When a gene has two copies of the recessive allele for a given trait, it is said to be homozygous recessive. This indicates that neither dominant allele is present and that both copies of the gene are inherited from each parent. Both copies of the gene must be homozygous recessive for the recessive phenotype to manifest in the person. For instance, in the case of Mendelian inheritance of pea plant colour, a person will be homozygous recessive for this trait and express the recessive phenotype of yellow pea colour if they have two recessive alleles for yellow pea colour (yy). A person will express the dominant phenotype of green pea colour rather than the recessive phenotype if they have at least one dominant allele for the colour (Yy or YY).

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Answer:

The contour lines will be closest together.

Explanation:

When contour lines are closer together, the slope is steep. When contour lines are farther apart, the slope is gentle. This is because contour lines indicate altitude. The closer the contour lines, the faster the increase in altitude, and therefore the steeper the slope.

Answer:

i can;t see it clearly

Explanation:

Answer: it's on g00gle if you look up the exact question.

Explanation:

The bison population will grow slower than before due to the increased death rate of adults from the new disease, which will limit the population's size and reproductive potential.

What is bison population?

The carrying capacity of the bison population will also be lower than before due to the disease's impact on adult bison, further limiting population growth.

If a new disease emerges in the bison population, infecting and increasing the death rate of adult bison, the population dynamics of the herd will change in the future. The carrying capacity of the bison population will be lower than before, because the disease reduces the number of adults who can reproduce, and therefore limits the overall size of the population.

Moreover, the birth rate of the bison population may not necessarily be higher than before because the disease could also affect the reproductive ability of the bison, and even if it does not directly impact reproduction, the population may be limited by the lower number of adult bison that can mate.

As a result, the bison population will grow slower than before because of the increased death rate of adults due to the disease. In some cases, the population may even decline if the death rate exceeds the birth rate. Therefore, the correct answer is that the bison population will grow slower than before.

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There could be several reasons why one individual expresses the cell division gene while the other does not, even though they have identical gene and promoter sequences. Some possible explanations include:

1. Differences in regulatory factors: The expression of a gene is regulated by various factors, such as transcription factors and epigenetic modifications. It is possible that the two individuals have differences in these regulatory factors, leading to differential gene expression.

2. Environmental factors: External conditions or stimuli can influence gene expression. It is possible that the two individuals are exposed to different environmental factors, such as temperature, light, or nutrient availability, which could affect the expression of the cell division gene.

3. Mutations in regulatory regions: Even though the gene and promoter sequences are identical, there could be mutations in other regulatory regions of the genome that affect gene expression. These mutations could be present in one individual but not the other.

4. Genetic interactions: Genes do not act in isolation, and their expression can be influenced by interactions with other genes. It is possible that the two individuals have differences in the genetic background or presence of interacting genes, which could influence the expression of the cell division gene.

Overall, the differential expression of the cell division gene in two individuals with identical gene and promoter sequences could be attributed to a combination of genetic, regulatory, environmental, and genetic interaction factors.

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Digestive system

Explanation:

The sugar goes straight from the digestive system into the bloodstream after an individual consumes and digests food.

However, glucose can only enter cells if enough insulin is also circulating in the bloodstream. Insulin is a protein that makes cells ready to receive glucose

Bower building techniques increase the chance of reproduction.

In biology, a fitness advantage refers to behavior or phenotypical trait that helps an organism to be fit or to have greater chances of survival and reproduction.

In the case of the species Chlamydera nuchalis, bower building is a fitness advantage because males with bower building abilities have a greater change of reproduction, while those with poor bower building abilities are not likely to reproduction, and therefore not likely to pass their genes to the next generation.

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a.) in the preovulatory phase. The stratum functionalis is the layer of the endometrium that undergoes cyclic changes during the menstrual cycle. It thickens and develops during the menstrual cycle,

in preparation for possible implantation of a fertilized egg. The thickness of the stratum functionalis varies throughout the menstrual cycle. It is thickest in the preovulatory phase, which is the phase just before ovulation. During this phase, the ovaries are producing increasing levels of estrogen, which stimulates the growth and development of the endometrium. After ovulation, the stratum functionalis continues to thicken in preparation for possible implantation of a fertilized egg. However, if fertilization does not occur, the stratum functionalis is shed during menstruation. Therefore, the answer to the question is a) in the preovulatory phase, the stratum functionalis is the thickest.

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Protists are famous for being a diverse and interesting group. One cool fact is that they can be either bacteria or monerans.

A protist is any eukaryotic organism that is not an animal, plant, or fungus. While it is likely that protists share a common ancestor, the exclusion of other eukaryotes means that protists do not form a natural group, or clade.

Three types of animal-like protists are paramecium, euglena, and amoebas. Euglena is special in that they are both animal-like and plant-like.

Protist is any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms. They may share certain morphological and physiological characteristics with animals or plants or both.

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Answer:

Natural selection does not create adaptions, mutations, or variations. Natural selection causes the extinction of individuals who are not well adapted to changes in the environment. Natural selection can also provide reproductive advantages for some individuals over other individuals.

The specie that I would like to model would be a housefly.

The classification of a housefly are:

This refers to the binomial nomenclature that is used to classify living organisms and show their relationship with others.

Hence, we can see that the name of the person that invented this system is known as Carl Linnaeus who developed the system in the 18th Century.

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Oswald Avery's experiments with Streptococcus pneumoniae suggested that DNA was the "transforming principle" responsible for converting one strain of bacteria into another, establishing DNA as the genetic material.

The work of Oswald Avery, along with his colleagues Colin MacLeod and Maclyn McCarty, suggested the existence of a "transforming principle" in bacteria. In the 1940s, they conducted a series of experiments at the Rockefeller Institute for Medical Research to investigate the nature of genetic material.

Avery and his team focused on a specific bacterium called Streptococcus pneumoniae. They observed that when a non-virulent strain of the bacteria was mixed with a heat-killed virulent strain, the non-virulent strain transformed into a virulent form capable of causing disease. This transformation occurred even without the presence of live bacteria, indicating that some substance from the heat-killed bacteria was responsible for the transformation.

To identify the transforming principle, Avery and his colleagues performed a series of experiments. They treated the heat-killed bacteria with various enzymes that could break down different types of molecules, such as proteins, lipids, and carbohydrates. Only when they treated the bacteria with an enzyme that could break down DNA did the transformation cease. This led them to conclude that DNA was the transforming principle.

Avery's groundbreaking work provided strong evidence that DNA carries genetic information and has the ability to transform one strain of bacteria into another. This laid the foundation for understanding the role of DNA as the genetic material in living organisms.

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