Answer:
The process where part of the DNA is saved during replication is known as semi conservative replication.
Explanation:
During cell division, a cell must first replicate its DNA (Deoxyribonucleic acid). When a cell divides into daughter cells , the DNA of the parent cell must be copied because DNA contains the genetic material of an organism. DNA replication is the process in which DNA is copied during the cell division cycle. During replication, the complementary strands of the original double helix DNA are separated and one of the two strands in the original molecule is saved in the new DNA molecule. Thus the new DNA molecule is made of an original strand and a newly synthesized strand. So the DNA replication is known as semi conservative replication. Each strand of the original DNA molecule is referred as the template strand because it provides information for the production of newly synthesized strand. It takes place inside the nucleus
of a cell during the s stage of the cell cycle. During replication, helicase enzyme breaks the hydrogen bonds between the complementary bases (Adenine with Thymine, Cytosine with Guanine) and unwinds the double helix of DNA. The two separated strands create a Y-shaped replication fork and act as templates for the synthesis of new strands of DNA. Enzymes known as DNA polymerases create the new strands.
Answer:
fast moving mountain streams which flow over rocks and waterfalls are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Fast moving mountain streams are high in nutrients. Organisms have adaptations to hold on in fast moving water, resulting in a large diversity organism.
Slow moving flood plain rivers are high in oxygen due to the amount of surface area of the water that is exposed to the air.
Slow moving flood plain rivers are low in nutrients. These rivers move too slow for plant growth and other organisms to survive.
Answer:
espero que esto ayude :D
Explanation:
Una vacuola es un orgánulo celular unido a una membrana. En las células animales, las vacuolas son generalmente pequeñas y ayudan a secuestrar los productos de desecho. En las células vegetales, las vacuolas ayudan a mantener el equilibrio hídrico.
Answer:
the first one is correct
Explanation:
:)
The compound light microscope is the most commonly used type of microscope. It uses lenses and light to magnify and view images.
<span>Mitochondria and
chloroplasts are the result of the process called endosymbiosis. Mitochondria
and the chloroplasts are originally from the prokaryotes. They have the ability
to take up inside a large single cell organism which they help each other in
order to produce energy for each other. Endosymbiosis, from the term symbiosis,
the organisms that are symbiotic is living inside the other pair, just like how
the mitochondria and chloroplasts responds to each other.</span>
