Answer:
B) The first shell only holds 2 electrons so the 3rd electron had to go in the second shell.
Explanation:
Electrons fill up from smallest to largest, the first electron shell only holds 2 electrons, so the remaining electron had to go to the second shell.
Answer:
A. Taxa are based on Latin, not English.
Explanation:
In the classification of organism, the child choose English as primary language but scientists uses Latin language as a primary language for their taxa.
Swedish scientist Carl Linnaeus, initiated the classification of organism and he choose Latin names for different taxa such as phyla and species because Latin was a universal scholarly language in Europe.
So, till now scientists uses Latin language for the naming of organisms and the child uses English language.
Hence, the correct answer is A. Taxa are based on Latin, not English.
Answer:
Plasma membrane, ribosomes, cytoplasm, DNA
Explanation:
Answer: After 3 rounds, 8 segments having 2 original strands on different segments will be present.
Explanation:
The polymerase chain reaction selectively and repeatedly copy the double stranded DNA (dsDNA) in the PCR machine.
1st round:
Single piece of double stranded DNA (dsDNA) unwinds in two seperate strands, before complementary nucleotides are synthesized to establish double helix.
2nd round:
The two dsDNA yields 4 segments before complementary nucleotides are synthesized
3rd round:
The four dsDNA yields 8 segments before complementary nucleotides are synthesized.
Therefore, at the end of 3 rounds, the two original strands will be present on the 8 different segments of copied DNA.
