Biology Essays Unit 5

Posted by / 21-Aug-2020 08:42

Biology Essays Unit 5

Select two of the following three pairs and discuss the evolutionary relationships between the two members of each pair you have chosen.In your discussion include structural adaptations and the functional significance.Begin with the separation of the messenger RNA from the DNA template and end with the release of the protein at the plasma membrane. Describe the steps of protein synthesis, beginning with the attachment of a messenger RNA molecule to the small subunit of a ribosome and ending generalized with the release of the polypeptide from the ribosome.Include in your answer a discussion of how the different types of RNA function in this process. The diagram below shows a segment of DNA with a total length of 4,900 base pairs.

The unique properties (characteristics) of water make life possible on Earth.A portion of specific DNA molecule consists of the following sequence of nucleotide triplets.TAC GAA CTT GGG TCC This DNA sequence codes for the following short polypeptide.methionine – leucine – glutamic acid – proline – arginine Describe the steps in the synthesis of this polypeptide.What would be the effect of a deletion or an addition in one of the DNA nucleotides?

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  1. The process of communication and Elements of communication: According to Harold D Lasswell elements are mainly in 5 basic , They are (1) SOURCE (2) MESSAGE (3) CHANNEL (4) RECEIVER (5) EFFECT The communication process involves the sender, the transmission of a message through a selected channel and the receiver . Bhatia the elements are in 7 basis they are; (a) SENDER : The process of communication begins with a sender , the person who transmits a message.