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The human body of an average person contains roughly 30 trillion human cells. Some data are more accurate and suggests 37.2 trillion cells.

Answer:

cell or axon

Explanation:

Solution:

Similarities:

1. Facilitated diffusion and active transport are two methods involved in the transport of molecules across the cell membrane.

2. In both facilitated diffusion and active transport, transmembrane proteins participate in the passage of molecules across the plasma membrane.

Differences:

1. The facilitated diffusion is the process when the diffusion of molecules across the plasma membrane occurs from a higher concentration to a lower concentration while active transport occurs against the concentration gradient.

2. The facilitated diffusion does not require energy to transport molecules across the membrane. while in the active transport energy is required to transport molecules across the membrane.

The answer is E

Calvin cycle reactions take place in the stroma, and use CO2, ATP and NADPH to make carbohydrates.

Assuming a diallelic gene coding for one feature, heterozygous individuals are those who carry one dominant and one recessive allele. The set of peas that are both heterozygous for pea seed color are Yy x Yy. Option 3.

Assuming diploidy, an heterozygous individual is the one that carries in its genotype one dominant and one recessive allele from the same gene.

The heterozygous individual's phentoype depends on the inheritance pattern and on the interaction of the involved gene with other genes (if there is interaction).

In the exposed example, the gene that codes for seed color is diallelic (Y and y) and expresses complete dominance, meaning that the dominant allele hides the expression of the recessive allele in heterozygous individuals.

The set of peas that are both heterozygous for pea seed color are Yy x Yy. Option 3.

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Answer:

the answer is True

Explanation:

The hypothalamus is the master switchboard. It's the part of the brain that controls the endocrine system. That pea-sized structure hanging below it is the pituitary gland. It's called the master gland because it regulates the activity of the glands.

The adjusted mean is used by scientists because it could be able to eliminate the inconsistences in the data set that could be caused by outliers.

The term average has to do with the men of a data set. It is the singe value that defines the mid point of the data set. This is why we refer to the mean as a measure of the central tendency of a data set.

However, the ordinary mean could be affected by cases where the data has a large variation in the values especially in the presence of values that could be judged as outliers.

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The competitive inhibitor binds to the active site and inhibits substrate binding. The noncompetitive inhibitor binds to the enzyme at a different site. It does not prevent substrate binding, but it causes other changes in the enzyme that prevent it from efficiently catalyzing the reaction.

Competitive inhibitor is defined as a chemical pathway is disrupted when one chemical substance inhibits the effect of another by competing for binding or bonding.

Noncompetitive inhibitor is defined as a type of enzyme inhibition in which the inhibitor reduces enzyme activity while binding equally well to the enzyme.

Thus, the competitive inhibitor binds to the active site and inhibits substrate binding. The noncompetitive inhibitor binds to the enzyme at a different site. It does not prevent substrate binding, but it causes other changes in the enzyme that prevent it from efficiently catalyzing the reaction.

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Answer:

Answer in photo, hope it helps!!! :)

Explanation:

A sex-linked disorder meant that the gene associated is found in the X chromosome, so for a female to have the condition it needs 2 copies of the defective gene.

Given that the mother is a carrier but the father is healthy, the probability for a FEMALE child to have DMD is 0%, so b is the right answer.

Each enzyme has an optimal range of pH and temperature beyond which the activity of the enzyme is reduced and at extreme conditions, the enzyme may even denature. Thus, at pH 9 the activity of the enzyme will slow down.

Enzymes are the biocatalysts, which when added to a chemical reaction increases the rate of the reaction. These compounds bind with the substrate and form product however it remains unused during the reaction and hence with a small quantity of enzyme large amount of product can be formed.

Enzymes show highest activity at the optimal range of factors such as pH, temperature, and solvent available. Beyond this range, the enzymes show less activity and they may even denature at extreme conditions.

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If they are able to reproduce they will produce fertile offspring.

Species is defined as a group of organisms that can interbreed and produce fertile offspring. This means that if two organisms can have offspring and if those offspring can reproduce and produce offspring they are of the same species. Measured by the number of species insects certainly make up the largest proportion of living organisms in the world. Over one million species of insects have been documented and studied by scientists.    

A population is a group of organisms of the same species living in the same area at the same time. A species is a type or type of organism. For example, all humans belong to one species the scientific name for our species is Homohis sapiens and are distinct from other species such as gorillas dogs and dandelions. The concept of morphospecies states that species are distinguished from other species by physical characteristics and can be identified by morphological characteristics.

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The molecules that make up the outside "backbone" of a DNA molecule are the phosphates and sugars (b), while inside the DNA molecule are the nitrogenous bases that form hydrogen bonds pairs between the strands of DNA, holding them together.

The area below the water table is known as the saturated zone, and it is where all of the pore spaces between the sediment particles are filled with water.

Even in the lack of any silt or other sediment, depending on the kind of soil, the presence of surface water may still be a possibility.

On the stream bed, sediment particles are typically stationary and only move when the water is flowing swiftly enough to push them out of place. Typically, larger sediment particles weigh more, therefore the water must flow more quickly to be able to move the material.

Sediment is a term used to describe solid material that has been moved and deposited in a new location. Sediment contains rocks, minerals, as well as fragments of plants and animals. It might be as big as a boulder or as small as a single sand grain.

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C. When an electric current causes light to be produced   is the photoelectric effect observed

Heinrich Rudolf Hertz, a German scientist, developed the photoelectric phenomenon in 1887. Hertz discovered that when ultraviolet light shines on two metal electrodes with a voltage put across them, the light alters the voltage at which sparking occurs. This discovery is related to his work on radio waves.

High atomic number (Z) materials and low photon energy are where the photoelectric effect is most prevalent. Even though the energy transfer occurs between the photon and an orbital electron, the interaction should be viewed as including the complete atom.

A metal experiences the photoelectric effect when exposed to light. The wave theory of light makes the following predictions: Electrons will be released in response to light of any frequency.

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Answer:

no

Explanation:

table and graph to validate the question!

Seeds are living organisms, and like all living organisms, they undergo cellular respiration to produce energy for their metabolic processes.

Cellular respiration is the process by which cells break down glucose and other organic molecules in the presence of oxygen to produce ATP (adenosine triphosphate), the energy currency of the cell. The equation for aerobic respiration in seeds is:

Glucose + Oxygen → Carbon dioxide + Water + ATP

During germination, seeds become metabolically active and start cellular respiration to provide the necessary energy for the seedling to grow and develop.

To determine if the seeds in the "G" tube were undergoing respiration, one would need to measure the consumption of oxygen and the release of carbon dioxide over time. If oxygen is being consumed and carbon dioxide is being produced, it indicates that respiration is taking place.

As for whether the results support the hypothesis, it depends on the specific hypothesis that was tested. If the hypothesis predicted that the seeds would undergo respiration during germination, and the data in Data Table 1 and Graph 1 showed oxygen consumption and carbon dioxide production, then the results would support the hypothesis.

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Some types of mutations can cause greater changes in proteins because they result in a different amino acid being translated. This different amino acid provokes a different primary structure, a different active conformation and, in the end, a different biological activity. A certain type of point mutation (when a single base pair is altered), for example, can lead to this when it is a missense mutation. It can also lead to translate to a synonymous codon (coding for the same amino acid), but in this case it does not effect the protein and the mutation is called silent.

The following terms are used to describe the amount by which a stimulus must increase or decrease before it’s noticeable by an individual the Difference threshold. Option A.

Absolute threshold is the minimum level of stimulus that can be detected usually defined as at least half the time. Commonly used in neuroscience and experimental research the term can be applied to any stimulus that can be perceived by the human senses including sound touch taste sight, and smell.

The absolute threshold is the minimum amount of stimulus a human needs to perceive 50% of the time. The difference threshold is the smallest change in a stimulus that a human perceives with a 50% chance of her. Sometimes we are interested in how much stimulus is needed to distinguish between different stimuli. This is called just a noticeable difference or difference threshold.

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Answer:

1. Global warming is the change in the climate of the earth causing it to heat up whereas the greenhouse effect is a naturally occurring phenomena, constantly occurring due to the atmosphere and sunlight.

2. Carbon dioxide absorbs heat radiating from the Earth's surface and re-release it in all directions—including back toward Earth's surface.

3. Decomposition, ocean release and respiration.

Mitosis -> G1 -> S -> G2 -> cytokinesis best describes the sequence of events in a normal cell division.

Cell division is the process by which a parent cell divides into two daughter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome before dividing.

Moreover, mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells.

The continuity of life is based on the reproduction of cells, or cell division. Cell division functions in reproduction, growth, and repair.

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The statement that applies to the axial skeleton not the appendicular skeleton is

E. It protects the heart and lungs. .

An axial skeleton is a type of skeleton that consists of the bones of the head and trunk parts of the body. In the human skeleton, the axial skeleton consists of 80 bones and is composed of six parts i.e. the skull, ossicles of the middle ear, the hyoid bone, rib cage, sternum, and also the vertebral column. The axial skeleton in combination with the appendicular skeleton formed the whole skeleton.

The axial skeleton is the bones such as the vertebrae, sacrum, skull, ribs, and sternum. The appendicular skeleton is consist of the upper and lower extremities, which include the shoulder girdle and pelvis parts of the body. The appendicular skeleton includes shoulder girdle's bones, the bones of the upper limbs, pelvic girdle, and the lower limbs. So we can conclude that option A is the correct answer.

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Which statement applies only to the axial skeleton not the appendicular skeleton?

A. It contains a pivot joint

B. It has muscles attached that work in pairs

C. It contains red bone marrow

D. It possesses fossa for bone articulation

E. It protects the heart and lungs

Answer: C.

Explanation: a northern boreal forest lying on the southern slope of the Brooks Range and Arctic tundra on the north slope. The ANWR has wildlife species common to the Arctic and sub-Arctic

The net charge on the protein with amino acid sequence Glu-Ala-Ser-lys-Val-Arg-Phe-Ile-His will be positive.

Proteins are the biomolecules that are made up of amino acid monomers. They are very essential for the living body as they are required in the building and repair of the body. The primary sequence of proteins defines their functionality.

Amino acids are the organic compounds that are essential for the formation of proteins. Amino acids can be positive, negative or neutral in charge. Since the given sequence in the question has more positively charges amino acids( Lys, Arg, His) than the negatively charged amino acids( Glu, Asp) that is why the net charge of the protein is positive.

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Answer:

The primary function of RNA is to create proteins via translation. RNA carries genetic information that is translated by ribosomes into various proteins necessary for cellular processes. mRNA, rRNA, and tRNA are the three main types of RNA involved in protein synthesis.

The utricle is most sensitive to horizontal movements, while the saccule responds best to vertical movements.

To sense linear acceleration, gravity forces, and tilting movements, the vestibular system makes use of two additional organs known as the otolith organs. The utricle and the saccule are the two otolith organs found in the vestibular labyrinth. The saccule senses movement in the vertical plane, whereas the utricle is only designed to detect movement in the horizontal plane.

Macula is the sensory organs in the otolith organs which bear hair cells like that in semicircular canals. The vestibular system employs this knowledge of movement acquired through the otolith organs and semicircular canals to maintain posture, stability, and balance.

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Answer:

skinner

Explanation:

The greenhouse effect is caused by gasses such as carbon dioxide and water vapor, which absorb heat and reradiate the the heat back to the earth. Since in the greenhouse effect heat is retained, the greenhouse gasses act as thermal insulators to the Earth. These effect also moderates the temperatur on Earth. Having said this, the answer is D.

Answer: The correct answer (the statement that does NOT apply) is A. Mesosarurus swam from one continent to the other in breeding pairs.

Explanation:

The remains of Mesosaurus (a freshwater crocodile-like reptile living between 286 and 258 million years ago) have been found in Southern Africa and Eastern South America. Scientists have proven that Mesosaurus was not capable of swimming between the continents, so the presence of their fossils on two continents has proven the theory of continental drift. There is additional evidence that supports continental drift, where the two continents were connected.