(Variation.)Heritable differences that exist in every population are the basis for natural selection.
(Overproduction). Competition between offsprings for resources.
(Adaptation.) a trait that helps an organism survive and reproduce.
Descent with Modification.
The new cells are identical copies
Answer:
chromosomes because they carry the DNA.
Explanation:
Answer:
The answer is Norepinephrine.
Explanation:
Acetylcholine (Ach) and Norepinephrine (NE) are both chemical substances (neurotransmitters) released primarily by nerve cells and they affect different parts and systems of the body. Acetylcholine mostly targets the muscles and the brain and it is a part of the parasymphatetic nervous system whereas norepinephrine targets the whole body and has an effect that leads to the contraction of muscles and the increase of the heart rate. Norepinephrine is a part of the symphatetic nervous system.
Since the symphatetic nervous system is responsible for the crucial "fight-or-flight" response of our body, it has a more dramatic effect on the muscle contraction. Norepinephrine, being a part of the symphatetic nervous system, should result in a more drastic change in contractile force.
I hope this answer helps.
Answer:
In a scenario in which I have to synthesize a cell and decide why I have to pick one from Prokaryotic or eukaryotic because of their differences in the speed of the process. The characteristics that make it faster in prokaryotic cells are:
The primary transcript in prokaryotes does not undero further processing, so transation can begin immediatly.
Multiple proteins can be synthetized from a single polycistronic MRNA molecule.
Prokaryotes lack a nuclear envelope, so translation can begin on mRNA even before transcription of the mRNA is complete.
Explanation:
The nature of Prokaryotes makes them undergo the synthesizing process quicker than Eukaryotes because they don't require a preliminary process to start it as Eukaryotes have to undergo one. This is because their composition, Eukaryotes are cells without many organelles like mitochondria or even nucleus. this is also the reason for eukaryotes to be slower in the process of synthesizing mRNA because they don't have organelles to process it faster. Finally, because they don't have a nucleus to help them assimilate the mRNA.
