What gives proteins their many functions ?

13 If 90 families were lost in an extinction event that lasted 10 million

BlackZzzverrR [31]

G. cause if you just do a ratio everything adds up.

4 0

3 years ago

Explain the relationship between crossing over and genetic variation

diamong [38]

Answer:

Crossing over is termed as a process by which genetic materials are exchanged by non-sister chromatids during meiosis. Crossing over results in the new combination of information in genetic for, the cell for a specific trait. It ensures that organisms are identical from one generation to another.

Explanation:

9 0

3 years ago

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Fermentation is an anaerobic biochemical pathway with truly one simple intent.

larisa86 [58]

Answer:

We are losing Earth's greatest biological treasures just as we are beginning to appreciate their true value. Rainforests once covered 14% of the earth's land surface; now they cover a mere 6% and experts estimate that the last remaining rainforests could be consumed in less than 40 years.

One and one-half acres of rainforest are lost every second with tragic consequences for both developing and industrial countries.

Rainforests are being destroyed because the value of rainforest land is perceived as only the value of its timber by short-sighted governments, multi-national logging companies, and land owners.

Nearly half of the world's species of plants, animals and microorganisms will be destroyed or severely threatened over the next quarter century due to rainforest deforestation.

Experts estimates that we are losing 137 plant, animal and insect species every single day due to rainforest deforestation. That equates to 50,000 species a year. As the rainforest species disappear, so do many possible cures for life-threatening diseases. Currently, 121 prescription drugs sold worldwide come from plant-derived sources. While 25% of Western pharmaceuticals are derived from rainforest ingredients, less that 1% of these tropical trees and plants have been tested by scientists.

Most rainforests are cleared by chainsaws, bulldozers and fires for its timber value and then are followed by farming and ranching operations, even by world giants like Mitsubishi Corporation, Georgia Pacific, Texaco and Unocal.

There were an estimated ten million Indians living in the Amazonian Rainforest five centuries ago. Today there are less than 200,000.

In Brazil alone, European colonists have destroyed more than 90 indigenous tribes since the 1900's. With them have gone centuries of accumulated knowledge of the medicinal value of rainforest species. As their homelands continue to be destroyed by deforestation, rainforest peoples are also disappearing.

Most medicine men and shamans remaining in the Rainforests today are 70 years old or more. Each time a rainforest medicine man dies, it is as if a library has burned down.

When a medicine man dies without passing his arts on to the next generation, the tribe and the world loses thousands of years of irreplaceable knowledge about medicinal plants.

Explanation:

3 0

3 years ago

Select the best description of amino acid metabolism: Group of answer choices Amino acid metabolism does not occur. Aerobic meta

Stolb23 [73]

Answer:

Aerobic metabolism of amino acid requires deamination

Explanation:

Living system can be defined as the internal systems of organisms and how materials circulate within organisms.

Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.

Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.

Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, digestion, metabolism, etc.

Metabolism can be defined as a set of chemical processes carried out by a living organism such as humans, plants and animals, in order to sustain life.

Aerobic (oxygen-using) metabolism can be defined as a biological process that typically involves the extraction of energy from any carbohydrate source such as amino acids, fatty acids, etc.

Basically, an aerobic metabolism of amino acid is a process that requires deamination.

Generally, proteins comprises of amino acids and it is responsible for maintaining the proper functioning of the body system.

Transamination can be defined as a biochemical process which typically involves the removal of amino groups from amino acids and transferring them to a ketoacid (amino acid without an amine group), so as to form new amino acids.

Basically, transamination is a reversible oxidation-reduction reaction that is responsible for the deamination of amino acids.

4 0

2 years ago

Three of the most prominent definitions of species are the biological species concept, the phylogenetic species concept, and the

AysviL [449]

Answer:

An individual can be placed or classified into a particular species depending on the concept a scientist has considered,

The three most prominent are Biological, morphological and phylogenetic species concept.

1. Biological species concept- Individuals that can interbreed naturally are placed into the same species. Therefore, Biological species concept, not applicable for extinct species

2. Morphological - Relies on similarities in structure

This species concept places individuals having similar body structures into the same species. It can be easily applied to asexual and extinct species.

3. Phylogenetic - Based on evolutionary history

Species are classified according to a common ancestor.

4. Morphological and Phylogenetic

Accommodates asexual reproduction

Species acceptance criteria can be subjective

5. Morphological, Phylogenetic, and Biological

Used by scientists in classification

All the three concepts are used for classification.

6 0

2 years ago