Answer:
Cro and lambda
Explanation:
In the lysogenic cycle, the viral DNA is within the host DNA, while in the lytic cycle the viral DNA is separated from the bacterial cell, replicating independently from the bacterial DNA. The cro and lambda are DNA-binding repressor proteins of the bacteriophage lambda which bind to different operator sites, i.e., different genetic sequences found between the promoter and the structural gene. These proteins are known to have complementary functions in lytic and lysogenic cycles. The cro protein repressor binds non-co-operatively to operator DNA regions, while the lambda protein contains a domain (carboxy-terminal) that binds co-operatively to operator regions.
Answer:
1) Hydrogen
2) Nucleotide phosphates
3) Sugar
4) Original free DNA
5) Unzip exposed bases
6) Identical
7) New
8) Complementary
Explanation:
2 Choose from the following words to fill in the blanks of the steps in DNA replication. Each one may be used only once. identical new sugar unzip exposed bases original free DNA nucleotides phosphate hydrogen The ____hydrogen_ bonds between the bases break, and the two DNA strands unwind and____ nucleotides phosphates____ are brought in, and they attach to the ____sugar___ on both DNA strands. Bonds form between the ___original free DNA___ and ____unzip exposed bases__ molecules of the just-arrived DNA nucleotides, forming a new strand. DNA replication results in two DNA double helices, each composed of one ___identical___ and one ___new__ strand. The new DNA molecules are ____complementary_____ to each other and the original DNA.
However, the cells do not burst due to the presence of the CELL WALL that provided structural support for the CELL.
The cell wall is a cell organelle that is found in plant cells only. It serves as a sort of skeleton to the cell because it gives rigidity and structural support to the cells. The cell wall is located outside the cell membrane and it is made up of cellulose. It also gives protection to the plant cells.
Answer:
The blood brain barrier blocks chemicals from entering brain tissue.
Explanation:
