Select the true statementabout unmyelinated axons:A. action potentials occur everywhere along the length of the axon, and propagation is faster than in myelinated axons.B. action potentials occur everywhere along the length of the axon, and propagation is slower than in myelinated axons.C. action potentials occur only at some points along the axon, and propagation is fasterthan in myelinated axons.D. action potentials occur only at some points along the axon, and propagation is slower than in myelinated axons.E. Unmyelinated axons do not exhibit action potentials.

Answer:

DNA polymerase III is a holoenzyme, which has two core enzymes (Pol III), each consisting of three subunits (, and ), a sliding clamp that has two beta subunits, and a clamp-loading complex which has multiple subunits (, , , , and ).

Explanation:

The subunits used to make product in DNA replication are:

I. Alpha (α) subunit.

II. Delta (\(\delta\)) subunit.

III. Epsilon (\(\epsilon\)) subunit.

Nucleus is the most conspicuous cell organelle that is found in all eukaryotic living organisms.

Basically, the nucleus serves as the site for ribonucleic acid (RNA) synthesis and deoxyribonucleic acid (DNA) replication.

DNA replication can be defined as a biological process through which two identical replicas of deoxyribonucleic acid (DNA) molecules are produced from an original deoxyribonucleic acid (DNA) molecule, especially during cellular division.

This ultimately implies that, DNA replication is a biological process that occurs during cellular division and it involves the duplication of a double-stranded DNA to produce two identical deoxyribonucleic acid (DNA) molecules.

The three (3) main subunits (polymerases) used for making products in DNA replication includes the following:

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Answer:

c

When too much rain falls onto the ground to conveniently infiltrate the soil, part of it "runs off". Gravity pulls it directly downhill. This runoff adds greatly to water levels in rivers and lakes. Occasionally, when runoff radically exceeds infiltration, it creates floods and flash floods.

Explanation:

mrk me brainlest

Answer:

D

Explanation:

D

Among the vertebrates classified as tetrapods are mammals, birds, amphibians, and reptiles, hence A, B, C, and D all are correct.

All current land vertebrates fall under the tetrapod order, as do several extinct terrestrial animals that now live an aquatic lifestyle (such as whales, dolphins, seals, sea lions, sea turtles, and sea snakes).

Vertebrates without four legs are referred to as non-tetrapod vertebrates, the superclass Pisces includes the class Chondrichthyes.

Lungfish, fish with lobbed fins, and fish with ray fins are all members of the class Osteichthyes, which is part of the superclass Pisces. Despite only having two legs, tetrapods include humans and birds.

Therefore, even if they have temporarily lost their "four feet," all of these creatures are tetrapods since they are descended from the tetrapod progenitor.

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Answer:

Mendel worked with pea plants showing complete dominance for various characteristics

- E.g. flower color, plants either have purple flowers or white flowers

- A particular genotype produces a recognizable phenotype

Explanation:

Phenotypes can cause by genes, environmental factors, or a combination of both.

Phenotypic variation, then, is the variability in phenotypes that exists in a population. For example, all people come in different shapes and sizes: height, weight, and body shape are phenotypes that vary.

The biggest barrier to underwater exploration is the rise in pressure with increasing water depth. A person would pass out from increased pressure at such a deep depth of water (lose consciousness).

Drilling-assisted ground water exploration is one of the Central Ground Water Board's (CGWB) main tasks, with the goal of finding aquifers in various hydrogeological settings and establishing hydraulic characteristics.

In order to comprehend the hydrologic cycle, know the quality of the groundwater, and determine the nature, quantity, and type of aquifers, groundwater exploration is the research of subsurface formations. There are various techniques for discovering groundwater. One technique for investigating groundwater is surface geophysical approach.

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Answer:

going to all the other plants to try to find life form

Answer: Its A i tried it and got it right

Explanation:

Answer:

Explanation:

This is an observation because the person noticed the lake was brown. They then wondered why the lake was brown, so that becomes a problem question.

Hope this helps.

Here, the hypothesis is "plants communicate with their neighbors in response to stress", dependent variable is the amount of the stress hormone in the plants, and the independent variable is the exposure to stress (applied 3 times a day for 10 days), standardized variables are plants used, duration of the stressor, amount of stress hormone. The control group is the plant that is not exposed to stressor.

Here, the control group is the group of plants that are not exposed to stress, and the control groups plants are experimented or tested with the other plants to get the result of the stress hormone on the plants.

Hence, here, the hypothesis is "plants communicate with their neighbors in response to stress", dependent variable is the amount of the stress hormone in the plants, and the independent variable is the exposure to stress (applied 3 times a day for 10 days), standardized variables are plants used, duration of the stressor, amount of stress hormone. The control group is the plant that is not exposed to stressor.

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Answer:

nating

Explanation:

nating because never seen some in world

This is an astronomically large number and suggests that it is highly unlikely for any two individuals to have the same DNA profile at these four loci.

DNA (Deoxyribonucleic acid) is a long, complex molecule that contains the genetic instructions used in the development and function of all known living organisms and many viruses. It is often described as the "blueprint" or "code" of life. DNA is composed of four types of nucleotides, which are the building blocks of the DNA molecule. Each nucleotide contains a sugar molecule, a phosphate group, and a nitrogenous base (adenine, thymine, guanine, or cytosine). The sequence of these bases along the DNA molecule determines the genetic information it carries.

Here,

To determine the number of individuals in the US population that have a specific DNA profile at these four loci, we need to multiply the percentage of individuals with each genotype at each loci. Let's start by finding the number of individuals in the US population who have 8 repeats at loci 1. We know that 10% of the US population has this genotype, so:

Number of individuals with 8 repeats at loci 1 = 10% of 300 million

= 0.1 x 300,000,000

= 30,000,000

Similarly, we can find the number of individuals with 12 repeats at loci 2:

Number of individuals with 12 repeats at loci 2 = 5% of 300 million

= 0.05 x 300,000,000

= 15,000,000

For loci 3:

Number of individuals with 7 repeats at loci 3 = 10% of 300 million

= 0.1 x 300,000,000

= 30,000,000

And finally, for loci 4:

Number of individuals with 5 repeats at loci 4 = 30% of 300 million

= 0.3 x 300,000,000

= 90,000,000

To find the number of individuals with all four of these genotypes, we need to multiply these four values:

Number of individuals with all four genotypes = 30,000,000 x 15,000,000 x 30,000,000 x 90,000,000

= 3.87 x 10²⁵

This is an astronomically large number and suggests that it is highly unlikely for any two individuals to have the same DNA profile at these four loci. In practice, forensic DNA profiling typically looks at many more loci to increase the uniqueness of the DNA profile.

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Answer: I think it's D. Let me know if it's right.

by using inductive reasoning based on empirical evidence

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\({===========================================}\)

\({\underline{\huge \mathbb{Q} {\large \mathrm {UESTION : }}}}\)

\({===========================================}\)

\( {\underline{\huge \mathbb{A} {\large \mathrm {NSWER : }}}} \)

The two main issues that need to be balanced in human skin adaptations are the need for protection against harmful environmental factors (such as UV radiation, extreme temperatures, and injuries) and the need for efficient thermoregulation (maintaining a stable body temperature). The skin has evolved to perform both of these functions through various adaptations, such as the production of melanin to absorb UV radiation, the ability to sweat to cool the body, and the development of insulation in colder environments.

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Protection from harmful environmental factors (such as UV radiation, extreme temperatures, and injuries) and effective thermoregulation are the two primary concerns that need to be managed in human skin adaptations. (maintaining a stable body temperature). Through a variety of adaptations, including the production of melanin to absorb UV rays, the capacity to perspire to cool the body, and the creation of insulation in colder environments, the skin has evolved to accomplish both of these tasks.

A.this statement is correct since non-polar molecules diffuse easily through the semi-permeable membrane

B.this statement is false since this is diffusion, a form of passive transport that does not require ATP

C.this is false for the same reason

D.This is true since this is passive transport

E.This is false because proteins and carbohydrates can't simply pass through the phospholipid bilayer since they are big charged molecules

F.This statement is true since those are small molecules that can easily pass through the semi permeable membrane

G.this statement is false since molecules that diffuse are usually non poalr

Answer:

Summer

Explanation:

North experiences opposite seasons from the South.

force causes changes in the motion and the energy of matter

Answer:

The correct answer is -

1. transcription 2. nucleus, 3. RNA polymerases, 4. messenger, 5. introns 6. gene or exons.

Explanation:

Protein synthesis is a two-stage process, transcription, and translation. Transcription is the first stage that takes place in the nucleus of eukaryotic organisms.

The enzyme RNA polymerase is the essential enzyme for this process which helps in copying nucleotides from DNA to get out of RNA, The end product of this process is called messenger RNA or mRNA. Introns are the non-essential part of the mRNA as they are not part of the coding protein and hence cut out from the sequence by the process called RNA splicing. The remaining part of the mRNA is called gene and the part of the gene code for the building protein called exons.

The unknown parent's genotype in the dihybrid cross is likely GgPp. This genotype would result in a 1:1 phenotypic ratio of green pod-purple flower to yellow pod-purple flower offspring.

In a dihybrid cross, we consider two independent traits. In this case, the traits are pod color (green or yellow) and flower color (purple). The known parent's genotype is GgPp, where G represents the dominant allele for green pod color, g represents the recessive allele for yellow pod color, P represents the dominant allele for purple flower color, and p represents the recessive allele for non-purple (white) flower color.

Therefore, the genotype of the unknown parent is likely GgPp, which produces the desired 1:1 phenotypic ratio of green pod-purple flower to yellow pod-purple flower in the offspring.

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Answer:

Actively forms a peptide bond by acting as a ribozyme aid in initiation of protein synthesis.

Explanation:

The role of the 23S rRNA of the large ribosomal subunit of E. coli during protein synthesis is the formation of a peptide bond by acting as a ribozyme aid in initiation of protein synthesis. 23S rRNA has an important function of peptidyl transferase. Both peptidyl-tRNA and aminoacyl-tRNA are necessary for synthesis of protein and transpeptidation response. The 23S rRNA positions have a significant function in the binding of tRNA in P site of the large ribosomal subunit.

A simple food chain connects trees and bushes, giraffes (who consume trees and shrubs), and lions (that eat the giraffes). Each link in this chain feeds the one that follows.

All food chains originate from solar energy. This power is captured by plants. Every food chain and web contains at least two or three trophic levels. Typically, there are only four trophic levels. Several people eat food at different trophic levels. The primary consumers of plants, such as vegetables, are people.

A food chain describes who consumes whom. A food web is made up of all the food chains in an ecosystem. In an ecosystem, every organism occupies a specific trophic level, location, or network of relationships with other organisms. Animals that synthesise their own food through photosynthesis or chemosynthesis are represented at the bottom of the trophic pyramid as producers.

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Answer:

1) Weathering, Erosion, Disposition

2) Physical weathering is the breakdown of large rocks into fragments by physical forces; the chemical composition of the rock is not changed. Chemical weathering is the breakdown of rock by chemical reactions; the chemical composition is changed.

3) The four forces of erosion are water, wind, gravity, and glaciers.

4) Because the velocity of the river slows down a great deal when it reaches the large body of water, the sediment that the river was carrying is deposited along the mouth of the large body of water.

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Abrasion: Abrasion is the breaking down and wearing away of rock material by the mechanical action of another rock. Three agents of physical weathering that cause abrasion are moving water, wind, and gravity. Also, rocks suspended in thence of a glacier can cause abrasion of other rocks on Earth's surface. This would be a prime example of physical weathering, or mechanical weathering.

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Acid Precipitation: Acid rain causes less erosion than normal rainwater does. Rainwater can break down rocks by dissolving minerals in the rocks. Acid rain is rainwater that is more acidic than normal rainwater. Acid rain can also dissolve the minerals in rocks faster than normal rainwater can. This is chemical weathering.

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Animal actions: Animal and plant mobility is a factor in biological weathering. For instance, a plant may grow in a gap in a rock and, as its roots spread, cause the fracture to expand. A rabbit may also burrow into a crack in a rock, making it wider and eventually separating the rock. This is an example of physical weathering.

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Ice wedging: Ice wedging ,sometimes known as frost wedging ,can also cause rocks to break apart. Ice wedging causes cracks in rocks to expand as water seeps in and the water freezes and expands opening the crack further. Rocks formed under pressure deep within earth can become exposed at the surface. This is physical weathering

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Oxidation: Oxidation is another kind of chemical weathering. It occurs when oxygen from air dissolves in water and combines with chemicals in the rocks to form oxides. if the rock contains a lot of iron, then oxidation produces a brown material called iron oxide. This looks like rust on the rock.

Weathering is the chemical and mechanical breakdown of exposed rock. The chemical changes alter the minerals and make them softer, and mechanical weathering physically breaks rock into smaller and smaller pieces.

Erosion is the REMOVAL of those chemically and mechanically softer and broken pieces of rock from their original locations, by gravity, water, ice or wind. Erosion is transport (and as a result, fresh unaltered rock is exposed to wind, water and weather, and THAT becomes weathered in turn). The material being transported is ‘sediment’: sand, silt, mud and gravel.

Deposition is when the weathered and eroded (transported) material is dropped and settles down elsewhere, forming a ‘deposit’ of transported rock material.

If this deposit remains undisturbed long enough, and is buried by enough arriving material, it will eventually go through compaction and chemical reactions forming cement between the grains - thus resulting in a brand new, sedimentary rock.

Weathering, erosion, transport, deposition, compaction and cementation are part of the ‘rock cycle’.

Let’s start with basalt that form at mid ocean spreading centers. At mid ocean spreading centers rock material from the earth’s mantle continuously melts due to continuous decreasing in pressure from the oceanic crust spreading at this point. The molten rock quickly cools at the earth’s surface and forms rock known as basalt that makes up the oceanic crust all over the world. The newly produced oceanic crust rock slowly moves towards a boundary with a continental crust where the oceanic crust subducts beneath the continental crust due to the oceanic crust having a higher density than the continental crust. This is where things get a bit more interesting.

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The humans have a vestigial structure called the appendix. Therefore the statement is true, being a vestigial structure present in the human species.

Answer:

categorizing animal species

Explanation:

Answer:

The correct answer is - polymorphism mechanism.

Explanation:

Polymorphism mechanism in mitochondrial elongation factor gene EFG2: It involves escalates the atorvastatin toxicity and affects the cell respiratory function. Polymorphisms within the EFG2 factor gene lead to the implication in disease. This gene factor may result in adverse drug reactions such as STATIN, that can leads to side effect to the condition that can affect skeletal muscle severely.

EFG2 plays an essential role which is specific in mitochondrial ribosome recycling. EFG2mt gene is required for cell growth on galactose medium using small interfering RNA splicing of expression in human cell lines.

Such mutation exhibits an atorvastatin-sensitive phenotype and shows less respiratory capacity. this concludes that the first phenotype associated with SNPs in the EFG2mt gene and implicates the human EFG2mt gene as a pharmacogenetic gene for stain toxicity in humans.

The rock layer may have formed before life existed or may have eroded away any existing fossils.

There are a few reasons why a rock layer may not contain any fossils. One reason is that the rock layer may have formed before life existed on Earth, such as in the case of igneous rocks that form from volcanic activity.

Another reason is that the rock layer may have formed in an environment that was not conducive to preserving fossils, such as a high-energy riverbed or a desert.

Additionally, the rock layer may have been eroded away over time, destroying any existing fossils. Finally, it is possible that fossils were present in the rock layer but were not discovered or identified during the excavation process.

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