Answer:
D. 3; 508
Explanation:
A population compromises of the number of organisms of same species which can interbreed living in a particular geographical area. These members can interbreed to reproduce fertile offspring. A population can occur both in small and large areas.
Here, Linda observed three different populations: porcupines, pinion pines and beetles. The total organisms in her study comes from adding all the organisms from the three different populations. Thus, total organisms she studied is:
25 + 151 + 332 = 508.
Hence, Linda's study encompasses 3 populations and 508 organisms.
Two potential functions that eukaryotic cells perform to regulate transcription are DNA methylation: a process of epigenetics that participates in the regulation of the gene expression in two ways, directly impeding the union of the transcription factors, and indirectly propitiating the closed structure of the chromatin, and Histone acetylation, enzymes that acetylate conserved lysine residues in histones by transferring an acetyl group from an acetyl-CoA molecule, to form ε-N-acetyl lysine, is extensively associated with an open chromatin structure and therefore accessible to transcription factors, which increases gene expression.
<u>Answer:</u>
Photosynthesis and respiration are so interrelated with each other that one’s product are used as another’s reactant.
<u>Explanation:</u>
- Photosynthesis is a process used by organisms to convert 'light energy' into 'chemical energy', which is used as a source of energy for the organism.
- Respiration is a process in which glucose and oxygen is used to create ATP for the survival of the organism.
- During photosynthesis 'water and carbon dioxide' reacts in presence of light to create oxygen and glucose.
- Without photosynthesis and respiration life ceases to exist on earth.
This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary. The other process proposed to contribute to the formation of new oceanic crust at mid-ocean ridges is the "mantle conveyor".
