The correct answer is option C
Genetic engineering is the branch of science that deals with manipulation in the genes. The cutting and joining of two different types of DNA segment to get the desired character is also an outcome of genetic engineering.
Here, the gene coding for the poison in scorpion is cut and joined in the DNA of cabbage to produce small amount of toxin. This toxin will kill the caterpillar feeding on the cabbage.
This is an example of genetic engineering.
B. diatonic scale.
C. sounding board.
D. membrane.
a.) exhilarated
b.) ashamed
c.) complacent
d.) comforted
The feeling of Patricia Smith is that of being comforted when her mother speaks.
The central theme of the essay "Talking Wrong" is the move of the mother of the author named Patricia Smith to Chicago from Alabama.
From the passage, we can see that the feeling of Patricia Smith is that of being comforted when her mother speaks.
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Just took the test on Plato. The correct answer is D..comforted!!!
I only post answers I know are correct.
The statements 'histamine binds extracellularly to the H1 receptor', 'when histamine binds to the H1 receptor, the receptor undergoes a conformation change and binds the inactive G protein', 'once the G protein is active, it binds to the enzyme phospholipase C, activating it', and 'histamine is likely hydrophilic' are TRUE.
Histamine is a molecule released during inflammatory and allergic responses.
This molecule (histamine) binds to the G-protein coupled histamine (H1) receptor. This binding triggers a conformational change in the three-dimensional (3D) shape of the G-protein coupled H1 receptor.
Subsequently, the heterodimeric G protein is activated by GTP binding. The G-protein–GTP complex then dissociates from the G-protein coupled H1 receptor and interacts with phospholipase C, thereby activating a transduction signaling pathway.
Finally, the G protein accelerates the hydrolysis of GTP to GDP and thus terminates the transduced signal.
In conclusion, the statements 'histamine binds extracellularly to the H1 receptor', 'when histamine binds to the H1 receptor, the receptor undergoes a conformation change and binds the inactive G protein', 'once the G protein is active, it binds to the enzyme phospholipase C, activating it', and 'histamine is likely hydrophilic' are TRUE.
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Answer:
-Histamine binds extracellularly to the H1 receptor.
-When histamine binds to the H1 receptor. the receptor undergoes a conformation change and binds the inactive G protein.
-Once the G protein is active, it binds to the enzyme phospholipase C, activating it.
-Histamine is likely hydrophilic.
When histamine encounters a target cell, it binds extracellularly to the H1 receptor, causing a change in the shape of the receptor. This change in shape allows the G protein to bind to the H1 receptor, causing a GTP molecule to displace a GDP molecule and activating the G protein. The active G protein dissociates from the H1 receptor and binds to the enzyme phospholipase C, activating it. The active phospholipase C triggers a cellular response. The G protein then functions as a GTPase and hydrolyzes the GTP to GDP. The G protein dissociates from the enzyme and is inactive again and ready for reuse.
Explanation:
a. True
b. False
The statement that mucus membranes trap pathogens that are airborne is True
Thus, the statement that mucus membranes trap pathogens that are airborne is True.
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A)diamond
B)graphite
C)sand
D)silicon
Answer:
Graphite is the only allotrope of carbon which is acts as lubricant and it is soft in texture.
Option: B
Explanation:
The atoms of graphite are set in a hexagonal structure. Graphite is soft because the atoms are bounded by Van deer Waal forces which are week.
This graphite is called as dry lubricant as the carbon atoms are loosely packed and free to move hence, it is used as lubricant. As graphite is a dry lubricant this can be used where wet lubricant is not being used. It is only non-metal which is electrically conductive.
Answer:D
Explanation:if I know ittttt
The chromosomal mutation is C. Nondisjunction .Therefore , C. Nondisjunction is correct .
There are a number of factors that can increase the risk of nondisjunction, including:
Age: The risk of nondisjunction increases with age, especially in women.
Genetic factors: People with certain genetic conditions are at increased risk of nondisjunction.
Environmental factors: Exposure to certain environmental toxins, such as radiation, can also increase the risk of nondisjunction.
There is no cure for nondisjunction, but there are a number of things that can be done to manage the symptoms and improve the quality of life of people with nondisjunction-related birth defects.
Here are some additional details about nondisjunction:
Nondisjunction can affect any chromosome, but it is most common on chromosomes 21, 13, and 18.
Nondisjunction is estimated to be the cause of 50-60% of all miscarriages.
Nondisjunction is also the cause of some stillbirths and birth defects.
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Identification of mutation type, such as point mutation, silent mutation, insertion, deletion, transversion, or transition, depends on the specific changes in DNA or RNA sequences. For example, a change in a single base pair signifies a point mutation.
A thorough identification of the type of mutation seen on Chromosome 20 goes beyond merely looking at the question diagram. It depends on the specific alteration of the DNA or RNA sequences. Several types of mutations exist including point mutations, silent mutations, insertions, deletions, transversions and transitions, among others.
As an illustration, suppose the mutation involved a single base pair alteration, this would be a point mutation where one nucleotide is substituted with another. Transversions involve switching a purine with a pyrimidine or vice versa. If the mutation led to an addition or removal of a base pair, this would be termed an insertion or deletion respectively. Occasionally, a fraction of DNA from one chromosome may get transported to another chromosome or a different part of the same chromosome, a scenario known as translocation.
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