I believe Canis familiaris is the closest relative of Canis lupus.
Answer:
Passes absorbed energy to chlorophyll A.
Explanation:
Chlorophyll is a pigment found on the chloroplasts, it absorbs and reflects light's fotons in order to fuel the photosynthesis process where plants convert light into energy. There are two types of chlorophill:
- <em>Chlorophyll A:</em> a blue/green substance that is always necessary for photosyntesys, it absorbs light from red to blue areas and it acts as a primary electron donor in the electron transport chain.
- <em>Chlorophyll B: </em>a yellow/green substance that absorbs only blue light, it serves as an extension for the plant to absorb a broader range of light. <em>The extra energy absorbed by this clorophyll is then tranfered to chlorophyll A</em>.
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Light makes plants go through the process of photosynthesis. This is how plants make their own food and is essential for a plants survival. Hope this helped :)
Answer:
D) sympatric speciation and habitat isolation
Explanation:
Sympatric isolation is a form of evolutionary process whereby different species from an ancestral origin evolve within the same geographical environment as a result of reproductive isolation.
Habitat isolation is a form of reproductive isolation which occurs when two populations of a species inhabiting overlapping habitats become unable to interbreed with each other.
Reproductive isolation (habitat isolation) that occurs in the fleas is as a result of the new species becoming separate from it's ancestral species which feed only on pronghorn antelopes, although both species can still be found in the same geographical location (rangeland). The new species now have preference for cattle blood, and so are now found on cattle.
In the situation of the two new species of flea that would evolve, it can be said to an example of sympatric speciation and habitat isolation, since the host mammal is assumed to be their habitat and both the cattle and pronghorns often associate with one another in the same open rangeland.
The proteases involved in initiating and carrying out programmed cell death are called as caspases.
A strictly controlled cell dying mechanism known as programmed cell death, or apoptosis, is used by multicellular organisms to eliminate unwanted or dangerous cells. The proteolytic enzymes known as caspases, which cause cell death by cleaving certain proteins in the cytoplasm and nucleus, mediate apoptosis.
All cells contain the inactive precursors of caspases known as procaspases. These procaspases are typically activated by cleavage by other caspases, resulting in a proteolytic caspase cascade. Either extracellular or intracellular death signals trigger the activation process, which results in the accumulation of intracellular adaptor molecules and the activation of procaspases. Bcl-2 and IAP protein family members control the activation of caspase.
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