3. A section of DNA has been mutated.The original DNA was TAC CTC ACC GAG CGT. The mutated DNA is TAC CTC ACT GAG CGT. What is the impact of this particular mutation on the organism? In order to find out, you need to transcribe and translate the codons.
The mutation that involves the change in the sequence of DNA bases is reflected both in the transcription of mRNA and in translation, giving rise to an alteration in the protein, which may not function and whose impact on the organism is a morphological or functional alteration.
According to this scenario, the DNA has experienced a mutation by changing the sequence by one of its bases, Cytosine by Thymine, producing in the mRNA a termination codon that interrupts the normal synthesis of the protein, preventing that protein from fulfilling its function. This particular mutation is called Nonsense mutation.
For normal DNA
DNA TAC CTC ACC GAG CGT
mRNA AUG GAG UGG CUC GCA
Protein Met - Glu - Trp - Leu - Ala
For the mutated DNA
DNA TAC CTC ACT GAG CGT
mRNA AUG GAG UGA CUC GCA
Protein Met - Glu - STOP - Leu - Ala
The change of a cytosine by Thymine in the mutated DNA produces that the third codon of the mRNA is altered, encoding a UGA termination codon, which prematurely stops the protein synthesis and originates an incomplete protein, probably not functional, whose impact in the organism is a morphological or functional alteration.
The human genome codes for 20,000 to 25,000 proteins, but any given cell might produce only 5,000 different proteins. how is this possible?
This is because not all genes are expressed at the same time, so not all the proteins are present at a certain moment. The mechanisms that cell uses to control gene expression are called regulation of the gene expression. Thanks to regulation of the genes, cells have the ability to increase or decrease the production of specific gene products such as proteins. This property is important for the adaptability of an organism because it allows the cell to express protein when needed.
Why are certain amino acids defined as essential for human beings?
Out of the 22 amino acids, 8 cannot be produced in the body and must be consumed from outside sources, so they're called "essential".
A. integumentary, respiratory, digestiveB. Circulatory, respiratory, nervous
C. Integumentary, nervous, muscular
D. Circulatory, digestive, nervous
yeah, you are right. it is C
The diagram depicts a reflex arc which shows the pathway order of the reflex arc and the systems involved in the pathway. this is a somatic reflex arc (affecting muscles) The integumentary system is the first which is a organ system that is made up of the skin, hair, nails and exocrine glands. here, somatic receptors in the skin receives the stimulus, then afferent nerve fibers carry this signals to the spinal cord (nervous system: CNS and the PNS; the brain and spinal cord is under the CNS). this is the second system involved.
In the reflex arc, the action potential does not travel to the brain, so results are processed faster. these impulses synapse in the spinal cord. efferent nerve fiber then carry the motor nerve signals to the muscles (muscular system). the effector muscle that has been stimulated then brings about the response.
In summary, it is carrying sensory information from the receptor to the spinal cord and then response generated by the spinal cord is taken to the muscles. Analysis of the signal will then be done after the action with the brain receiving this sensory input.
) Describe three benefits of CBT.
1. CBT can be completed in a relatively short period of time compared with other types of talking therapies.
2. Research has shown CBT can be as effective as medicine in treating many types of depression and other mental health disorders.
3. Skills you learn in CBT are useful, practical and helpful strategies that can be incorporated into everyday life to help you cope better with future stresses and difficulties.
Cognitive behavioural therapy (CBT) is a talking therapy that can help you manage your problems by changing the way you think and behave.
CBT cannot remove your problems, but can help you manage them in a more positive way. It encourages you to examine how your actions can affect how you think and feel.
Talking and changing your behaviour can change how you think (cognitive) and what you do (behaviour). This can make you feel better about life.
CBT can help you manage problems, such as anxiety and depression and make them less likely to have a negative impact on your life.
There is always a risk that bad feelings you associate with your problem will return, but with your CBT skills it should be easier for you to control them.
Answer:CBT can help you manage problems, such as anxiety and depression and make them less likely to have a negative impact on your life. There is always a risk that bad feelings you associate with your problem will return, but with your CBT skills it should be easier for you to control them
The michaelis constant (km) is analogous to _______ that an enzyme has for its substrate. if the km drops then the enzyme has (gained / lost) affinity and if the km increases then the enzyme has (gained / gained) affinity.
The Michaelis menten constant (Km)
Is analogous to the affinity or the compatibility the particular enzyme has for its given substrate.
If the km drops, then the enzyme has reduced or lost affinity and likewise an increase in the affinity or gain is based on an increase in the value for km.
Which describes an atom that has fewer neutrons than protons and more electrons than protons? negative compound positive compound positive ion negative ion
When an atom has fewer neutrons than protons and more electrons than protons, such an atom is said to be an anion. Hence, it is negative ion.
Depending on the number of proton and electron, there are 3 types of atoms:
Neutral atoms in which the proton and electron numbers are balanced
Cation in which the proton number is more than the electron number
Anion in which the electron number is more than the proton number
In this case, the atom has more electrons than protons and, therefore, is an anion. The excessive electron makes such atom to be negatively charge.
Therefore, an atom that has fewer neutrons than protons and more electronsthan protons is a negative ion.