Answer;
GACUG
Explanation;
-Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis. Transcription takes place in two broad steps.
-First, pre-messenger RNA is formed, with the involvement of RNA polymerase enzymes. The process relies on Watson-Crick base pairing, and the resultant single strand of RNA is the reverse-complement of the original DNA sequence. The pre-messenger RNA is then "edited" to produce the desired mRNA molecule in a process called RNA splicing.
-The nucleotides pairing follows the same base pairing rules as in DNA to form the correct sequence in the mRNA. However, during transcription, uracil (U) pairs with each adenine (A) in the DNA.
Answer:
Muscle contraction occurs when the thin actin and thick myosin filaments slide past each other. It is generally assumed that this process is driven by cross-bridges which extend from the myosin filaments and cyclically interact with the actin filaments as ATP is hydrolysed.
Answer: CheA
Explanation:
Cytokines and chemokines are proteins that bind to other, cells that require specific antibodies to these proteins, making them a form of communication between the system cells immune. That process by which cells are sent to move through a chemical stimulus is called chemotaxis. The internal environment is responsible for the signal transduction part received by the receivers. CheR is a relatively slow enzyme and its main function is to methylate the receptors. It is divided into two domains: one responsible for substrate identification and the other for transferring methyl groups to the receptor.
Answer:
The consumption of mosquitoes by bats and the control of flooding provided by tropical forests in mountainous areas of central america are examples of <u>ecosystem services</u>.
Explanation:
Ecosystem services can be described as the functions performed by parts of the ecosystem which benefit in regulating the ecosystem. These services offer a huge help to humans without the humans having to perform any work. For example, in the above question, humans are naturally getting rid of mosquitoes because the mosquitoes are being consumed by the bats. The floods in Central America are also being controlled by the tropical forests and humans have no work in it. Hence, both these examples show ecosystem services.
Answer:
C. Electron, atom, molecule, cell
