Which base is found only in DNA? adenine guanine cytosine thymine
Answers
Answer: The correct answer is thymine.
Explanation:
DNA is a complex chemical compound which carries genetic information of a living being. It is a double helix structure. The full form for this is deodorize nucleic acid.
This compound is made up of 4 nitrogenous bases named as adenine (A), guanine (G), cytosine (C) and Thymine (T).
Adenine forms double hydrogen bonds with Thymine and cytosine forms triple hydrogen bonds with guanine.
In RNA, the nitrogenous bases found are adenine (A), guanine (G), cytosine (C) and Uracil (U).
The nitrogenous base Thymine is the only base which is found only in DNA.
Hence, the correct answer is thymine.
Answer:
Thymine.
Explanation:
DNA is present as the genetic material in case of almost all the organisms except some viruses only. RNA is present as the genetic material in case of the few viruses only.
DNA is made of the four nitrogenous bases, pentose deoxyribose sugar and the phosphate group. The adenine, guanine and cytosine are present in both the RNA and DNA. Thymine is present in case of the DNA only and absent in RNA and other molecule.
Thus, the correct answer is option (4).
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O Glucagon was secreted by his pancreas before he ate the cookies because his blood glucose was low. Insulin
was secreted after he ate the cookies because his blood glucose was high.
O Insulin was secreted by his pancreas before he ate the cookies because his blood glucose was low. Glucagon
was secreted after he ate the cookies because his blood glucose was high.
O Glucagon was secreted by his pancreas before he ate the cookies because his blood glucose was low. After he
ate, insulin from the cookies increased his blood sugar levels.
O Insulin was secreted by his pancreas before he ate the cookies because his blood glucose was low. After he ate,
glucagon from the cookies increased his blood sugar levels.
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During process of digestion which takes place in digestive tract statement which describes role of glucagon and insulin is glucagon was secreted by pancreas before he ate the cookies because his blood glucose was low. Insulin was secreted after he ate cookies because his blood glucose was high.
What is digestive tract?
It consists of the gastrointestinal tract along with the accessory organs which are present in digestion process . It involves the breakdown of complex food into smaller components which can be easily assimilated and absorbed by the body.
The digestion process has 3 phases: cephalic phase , gastric phase and intestinal phase.Cephalic phase begins with secretion of gastric juices from gastric glands in response to sight and smell of food.It involves chewing and chemical breakdown of food by the action of digestive enzymes ,saliva in the mouth contain enzymes like lipase and amylase which are secreted by the salivary and serous glands present on the tongue.
Learn more about digestive tract,here:
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Answer: Option A) Glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. Insulin was secreted after he ate the cookies because his blood glucose was high.
Explanation:When Kai was hungry and his blood glucose level was decreasing, glucagon is the hormone which was secreted by the islets of pancreas to increase the blood sugar levels in his body. Glucagon forces the liver to release the stored glucose in it, which increases the blood glucose level in the body. When Kai ate the sugar cookies there was enough of blood glucose available for his body, also it exceeded the requirement and went high. Insulin was then secreted to control this excess glucose from the islets of pancreas. As it helps the body cells to absorb the glucose and lowers the amount of glucose in the blood. It makes the cell available with the glucose to produce energy and perform their activities.
In short, glucagon and insulin both are secreted by the same organ which is islets of pancreas. But they differ in their function, glucagon increases the blood glucose when the body needs it, whereas insulin helps to absorb the excessive glucose and stores that in the body. Both are the hormones which help in regulating the body glucose levels.
The chronometer and the astrolab
The cross-staff and the compass.
The chronometer and the compass.
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pH = 2
H3O+ = 10^-10
pH = 9
H3O+ = 10^-1
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acidic
acidic
basic
basic
neutral, acidic, acidic, basic, basic
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Answer: The size.
Explanation: On the one hand the Emperor Penguin is bigger reaching up to 48 Inches (120cm) of height and 100 Lb in weight, on the other hand the Galápagos Penguin is much smaller. For example a large adult usually goes up to 21 Inches (53cm) and 5 Lb of weight.
This is directly related to the temperature of the environment in which each one develops, because a body exchanges heat in two dimensions through the surface. So, it's easier for a big creature to maintain core temperature stable.
This is really important in environments like the Arctic where temperature goes below zero and the opposite happen in the Equator where there is a tropical weather all the time.