B that is the answer for this question
Answer:
The correct option is D. <u>Helicase</u> is the enzyme that unwinds that double stranded DNA at the beginning of DNA replication.
Explanation:
DNA replication can be described as a process by which the strand of DNA gets duplicated into two new daughter strands.
Helicases can be described as the enzymes whose main function is to unwind the double helix structure of the DNA. The helicases break the hydrogen bonds present between the two strands of DNA. The helicases are the first machinery for DNA replication as they form the replication fork and begin unwinding of the DNA from the origin of replication
Answer: Given below
Explanation: <em>The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. ... They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell</em>
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It is the jelly-like fluid in cell - holds all other organelles in place - it is like Jell-O. nucleus. - in both plant and animal cells - controls and directs all of the cells activities - protects a cells genetic material called chromatin - chromatin contains all the instructions for what proteins it should make - protected by the nuclear membrane
Hello There!
It contains dissolved substances, cells and cell fragments.
The other parts of blood are:
Red blood cells - Carry blood around the body
White blood bells - Fight against bacteria and diseases
Platelets - Small fragments of bells. They are involved in forming blood clots.
Hope This Helps You!
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- Hannah <span>❤</span>
