Answer:
The correct answer is "chloroplasts and mitochondria".
Explanation:
Chloroplasts and mitochondria are two essential organelles because of its function of producing Adenosine triphosphate (ATP), the "molecular unit of currency". Chloroplasts are organelles that are found in plants and work in light conditions, whereas mitochondria could produce ATP in the dark. Since the biologist found that the heavier fraction could produce ATP in light it is very likely that it will have chloroplasts, while the light fraction that produces ATP in the dark would likely have mitochondria.
Answer:
D
Explanation:
The green house gasses trap heat just like the windows of the green house.
Getting scared half to death twice can be interpreted mathematically. On getting scared half to death first time means getting scared to death half once or 50% or 1/2 times alive.
On getting scared half to death second time implies that being scared half of the remaining life which is 1/2 of 50% or 25% (1/4 in terms of fraction).
Hence, you are scared to death by 50% +25% =75% or 3/4 in terms of fraction.
Getting scared twice half to death implies you are 25% or 1/4 times alive.
Answer:
they amplify the original signal manyfold.
Explanation:
A phosphorylation cascade can be described or is regarded as a sequence of events, where one enzyme phosphorylates another, causing a chain reaction, leading to the phosphorylation of thousands of other proteins.
Phosphorylation cascades is considered to be important because it plays a vital role in regulating many intra cellular processes such as growth, proliferation and cell division.
In conclusion , it should be understood that, cells make use of phosphoylation cascades for signal transduction, bringing outside stimuli to the interior of the cell, to stimulate a response.
