Answer:
Annual plant
Explanation:
An annual plant is called as such because it takes one year for it to go from seed, growth, seed production, then death. All parts of the annual plant dies after one year, including the roots, the stems, and the leaves. The main purpose of the annual plants is to produce as much seeds that will survive. Unlike the perennial plants, they do not regrow seasonally.
draw the structure of DNA nucleotide with adenine as nitrogenous base
Answer:
A nucleotide is made up of one sugar molecule, one phosphate molecule and one of the four bases. Here is the structural formula for the four nucleotides of DNA. Note that the purine bases (adenine and guanine) have a double ring structure while the pyrimidine bases (thymine and cytosine) have only a single ring.
Explanation:
A nucleotide is made up of one sugar molecule, one phosphate molecule and one of the four bases. Here is the structural formula for the four nucleotides of DNA. Note that the purine bases (adenine and guanine) have a double ring structure while the pyrimidine bases (thymine and cytosine) have only a single ring.
A DNA nucleotide with adenine consists of a phosphate group, deoxyribose sugar, and adenine base connected to the deoxyribose.
A DNA nucleotide with adenine as the nitrogenous base consists of three main components: a phosphate group, a deoxyribose sugar, and adenine as the nitrogenous base.
Firstly, there is a phosphate group which is a phosphorus atom bound to four oxygen atoms.
This group provides the backbone's negative charge to the DNA molecule and contributes to its structural stability.
Secondly, we have the deoxyribose sugar, a five-carbon sugar. It is a pentose sugar, meaning it has five carbon atoms. The carbons are labeled from 1' to 5' (prime).
The phosphate group is attached to the 5' carbon of one deoxyribose sugar and the 3' carbon of the preceding deoxyribose sugar, forming the sugar-phosphate backbone of the DNA strand.
Lastly, adenine is one of the four nitrogenous bases in DNA and is classified as a purine. It is attached to the 1' carbon of the deoxyribose sugar.
Adenine forms hydrogen bonds with thymine (T) in complementary base pairing in a DNA molecule. The nitrogenous base adenine has a specific structure, including a double ring.
In summary, the DNA nucleotide with adenine includes a phosphate group forming the backbone, a deoxyribose sugar providing the structure, and adenine as the nitrogenous base attached to the deoxyribose sugar at the 1' carbon.
This structure is fundamental to the building blocks of the DNA molecule, allowing for the storage and transmission of genetic information.
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Which of the following should be used to make a precise measurement of liquid volume
A graduated cylinder is the correct tool for making precise measurements of liquid volume, with marked scales for accuracy and the ability to measure at different increments.
To make a precise measurement of liquid volume, the appropriate tool to use is a graduated cylinder. Graduated cylinders are specifically designed to measure liquid volumes with a high degree of accuracy. They are marked with a graduated scale that allows users to read the volume of liquid inside the cylinder. Option D
These marks indicate specific volumes, which can vary in measurement units such as milliliters (mL) or centiliters (cL). For instance, if you're measuring a small volume of liquid, a 100-mL graduated cylinder can measure with an accuracy of "+/-1 mL", allowing for quite precise measurements. When using a graduated cylinder, it's important to measure at eye level and use the lowest point of the liquid's meniscus to obtain an accurate reading.