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3 years ago

LESSON 5: bio 1A Cells and homeostasis

Biology

2 answers:

Nana76 [90]3 years ago

6 0

<h3>Answer#1 </h3><h2>(C) Wastes, nutrients and water </h2><h3>Explanation: </h3>

It is the replacement of a section or one part of an insect or a different segmented animal by a composition composed of a different section, primarily through mutation. In evolutionary developmental biology, homeosis is the transmutation of an individual organ into another, resulting from a mutation or mis expression of several developmentally important genes, especially homeotic genes.

<h3>Answer#2 </h3><h2>(A) It dies </h2>

Unicellular organisms are the once which carries only one cell. Homeostasis is the state organism requires to operate at highest productivity. If an organism does not preserve homeostasis, the organism will not be capable to perform at full ability. Living things react to stimuli that happen inside them.

<h3> Answer#3</h3><h2>(A) Both unicellular and multi-cellular organisms are at risk of having too much water entering their cells if they are exposed to water containing no salts.</h2>

The amount of salt in the center of the living cells is greater and so the water will flow from the medium which has no salt to the interior of the cell where there is salt, this process is called as osmosis. And as a result to this salt content is higher in both the cellular organism.

<h3>Answer#4 </h3><h2>(C) They are specialized in function and work cooperatively with one another. </h2>

Cells are categorized according to their function so that they can interact with one another and work together. Similarly, the once that does not possess same functions are kept apart so that living process does not pauses or stops.

Kobotan [32]3 years ago

3 0

Is this actually a question? Lol.

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5.How does temperature change affect surface tension?

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Surface tension decreases when temperature increases because cohesive forces decrease with an increase of molecular thermal activity

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The thickest part of the crust occurs in _____.

lana [24]

Answer:

Option (3)

Explanation:

The continental crust is usually thick because it has an average thickness of about 35-40 km. In the high mountain ranges, it is the thickest, forming about 80 km on an average. These are formed when two continental plates form a sandwich pattern by sharing a convergent type of plate boundary.

For example, the thickest part of the crust is the Mt. Everest which lies in the great Himalayan range, which has started to form about 50 million years back. It is geologically the most recent mountain range.

The older mountains are continuously eroded in the geological past, as a result of which the height of the mountains is affected.

Thus, the correct answer is option (3).

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3 years ago

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What will occur if a species is divided into two groups and allowed to reproduce in different environments for many generations?

bonufazy [111]

Answer:

The original species will diverge into two new species. It will occur speciation. It will occur some sort of allopatric speciation.

Explanation:

When the original species is divided and placed under different environments, where they can reproduce for many generations, many changes or mutations will occur in each group. These changes will depend on each group´s environment and its ecological pressures and will lead to divergence. Pressures act on individuals and make them adapt to the new environmental conditions. Generation after generation, the genotype of individuals will increase the fitness to survive and reproduce. The fixation of mutations will increase the difference among both groups, up to the diverging point into two new species.

The biological concept of species states that individuals of the same species can reproduce because they have a genetic reservoir in common: many genetic variants.

Genetic variability is the measure of a species organism´s tendency to differentiate. In genetic variability, individuals of the same species are not identical. They are recognizable as members of the same species, but they differ in shape, function, and behavior. There exist variations among individuals of the same species.

Genetic variability originates from mutations, recombinations, and karyotype alterations. It allows or makes possible evolution.

Allopatric speciation consists of the geographic separation of a continuous genetic background giving place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

The process of allopatric speciation involves different steps:

• The emergence of the barrier.

• Interruption in the genetic interchange

• The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.

• Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.

• Prezigotic isolation mechanisms favored by selection once occurs a secondary contact between the new species in formation.

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2 years ago

This describes the evolution of many diverse species adapted to their specific habitats but having one common ancestor. This usu

vova2212 [387]

<span>Adaptive Radiation would be your answer :D</span>

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3 years ago

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