Answer:
the correct answer is b
Explanation:
the human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide. the primary organs of the respiratory system are the lungs, which carry out this exchange of gases as we breathe.
Answer:
The correct answer is - 137 earthworms.
Explanation:
Population growth is loosely characterized as the change in the measure of people of specials in a territory after a particular time frame. Population development is the adjustment in the measure of people of that species after some time.
Population growth = (rate/total number of individual) ×100/t
= (37/100)×100/1
= 37
Then, the total number of individuals after one year
= 100 + 37
=137
Answer:
Transcription
Explanation:
This occurs in three steps itself: initiation, elongation, and termination
Initiation (beginning)
- RNA polymers bind to a promoter on a gene
- DNA then unwinds to be "read" by an enzyme
- DNA now ready to make mRNA strand
Elongation (Second step)
- nucleotides are added to mRNA strand
- mRNA molecule is built after RNA polymers reads the DNA that unwound
- adenine (A) in DNA connects to a uracil (U) of RNA while connected to each other
Termination (End)
- RNA will cross a stop sequence in the gene (termination)
- mRNA done and disconnects or detaches from DNA
Hope this helps!
FAT CAT ATE TER AT
the sentence does not make sense, it is an example of deletion mutation
Highly reactive atoms or molecules that can cause damage to cells are called free radicals.
<span>Free radical is an atom, molecule, or ion that has an unpaired valence electron (electron in outermost shell). Because of that, free radicals are very unstable and they react quickly with other substances in order to make up the number of electrons in their outer shell. Free radicals may be generated in many different ways such as redox reactions, ionizing radiation, heat, electrical discharges..</span>
<span>Oxidative stress is a process which happens within the body and it is caused by oxygen free radicals or reactive oxygen species (ROS). Oxidative stress can damage cells, leading to a range of diseases and cause aging.</span>