Deﬁne mutation and mutagen.

1 answer:

4 0

Mutations. Definition. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.

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A hydrophilic peptide hormone is produced in the anterior pituitary gland located at the base of the brain. The hormone targets

dolphi86 [110]

Answer:

The answer is D: The hormone is released into the bloodstream where it can be transported to all cells with the correct receptors.

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According to the principle of _______, a change in one species in a community results in a change in another.

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The correct answer is coevolution.

The term is used to illustrate the conditions where two or more species communally influence each other’s evolution. For example, an evolutionary modification in the morphology of a plant may influence the morphology of a herbivore that consumes it, this, in turn, may influence the evolution of the plant that might influence the evolution of the herbivore and so on.

Coevolution most possibly takes place when distinct species have a close ecological association with each other. These ecological associations include parasite/host and predator/prey, mutualistic species, and competitive species.

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Many g protein-coupled receptors contain seven transmembrane α-helical domains. the amino end of the protein lies at the exterio

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The carboxyl end of the G- protein-coupled receptor (GPCR) is located in the cytosol (it is intracellular). Carboxyl terminus is one of the most variable structures of the protein. All of the GPCR are structural and functional similar, unlike their ligands.

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Rarefaction is used for which of the following?

ratelena [41]

Rarefaction in terms of ecology can be defined as a technique used to assess species richness from the results of sampling.

It allows the calculation of richness of a particular species for a given number of individual samples, and these are based on the construction of rarefaction curves.

Hence, the correct answer is: option A-Creating a representative sample

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Oil is an important source of energy which sustains modern human lifestyle. Roads, pipelines, mines and other structures must be

geniusboy [140]

c disruption of animal habitats

Explanation:

One of the likely effect of large scale infrastructural development is that it can lead to the disruption of animal habitats.

To develop new infrastructure, new areas have to be cleared to install the facilities and this can lead into encroachment of animal habitats.

Oil drilling projects are capital intensive ventures undertaken by exploration and production companies.
The oil is usually found in geologic formations deep within the earth crust.
To access this fuel, large drilling ventures must be undertaken in order to accommodate to technology and man power.
New areas have to cleared and this can push the habitat of organisms backward

Learn more:

Fossil fuel brainly.com/question/9231468

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