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Gelneren [198K]
2 years ago
5

What hormones are responsible for promoting cell division at the tips of plants?

Biology
1 answer:
IRISSAK [1]2 years ago
6 0

Answer:

Cytokinins promote cell division. They are produced in growing areas, such as meristems at tip of the shoot.

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9. What is always true of a binary compound? It has a double bond. It has two elements. It has covalent bonds. It has two atoms.
juin [17]

Answer

Correct answer is :It has two elements

Explanation

A binary compound is a compound that is made up of two of the elements in the periodic table. Some examples of binary compounds are NaCl and N_2O. This means that a binary compound can have more than 2 atoms as in the case of hydrogen oxide. Some binary compounds are ionic as in the case of sodium chloride.This shows that they do not necessarily have to have covalent bonds. This also rules out the possibility that they may always have double bonds as ionic compounds are bound together by ionic bonds. The only thing that will always be true of binary compounds is that they will always have 2 elements.

7 0
3 years ago
Read 2 more answers
Functions of the circulatory, respiratory, digestive, and endocrine systems?
gavmur [86]

The Circulatory System is about the Blood and the heart: they deliver oxygen to the rest of the body (except lungs). AFTER they deliver the oxygen they get the waste (Carbon Dioxide) and deliver it to the LUNGs (Respiratory System)

The Respiratory system is about the Lungs, Bronchi, Alveoli, Trachea, etc. They EXCHANGE the carbon dioxide from the blood with oxygen, they do this in the ALVEOLI (a small, grape-like sockets in the lungs).

The Digestive System consist the Esophagus, Stomach, Intestines, Gallbladder, and Anus. They Digest the food, they ABSORB the nutrients from the food we eat and we poop out the UNNECESSARY wastes.

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3 years ago
Understand the terms genome, chromosome, gene, replication fork, Okazaki fragment, genotype, phenotype, codon, anticodon, promot
HACTEHA [7]

Answer:

Molecular biology aims to study the processes that are carried out in living beings from a molecular point of view

Explanation:

-Genoma: A set of genes contained in chromosomes, can be interpreted as the totality of the genetic material that an organism or a species has

-Chromosome: Each of the highly organized structures, formed by DNA and proteins, and contains most of the genetic information of a living being

-Gen: Molecular unit of genetic inheritance, where genetic information is stored and can be transmitted to the offspring

- Replication fork: Joint between two strands of DNA when it is self-replicating. Each of the DNA strands serve as a template for the synthesis of the new DNA

-Okazaki fragment: Short strands of DNA newly synthesized in the discontinuous strand. They are synthesized in the 5 '→ 3' direction from RNA primers that are later eliminated

-Genotype: Genetic information that an organism has, in the form of DNA

-Fenotype: Expression of the genotype according to a specific environment. They include both physical and behavioral traits

-Codon: Three nucleotide sequence of DNA or RNA corresponding to a specific parameter

-Anticodon: Three nucleotide sequence complementary to a sequence of three other nucleotides found in messenger RNA

-Promotor: DNA section that controls the initiation of RNA transcription

-Intrón: Region of the DNA that is part of the primary transcription of RNA and are removed from the mature transcript, before its translation

-Exon: Portion of gene encoding amino acids

-The modified plasmid size from 1 to more than 1000 kilograms of bases

-The size of the bacterial genome ranges from 0.58 megabases to 10 Mb in several species of cyanobacteria, with the exception of Bacillus megaterium, which has a 30 Mb genome

-The size of the eukaryotic genome is very variable, for example, the smallest sequenced is that of Guillardia theta, of only 0.55 Mb, yeast (1.2 Mb) to amoeba (686,000 Mb).

-In the DNA, the purines are adenine (A) and guanine (G). The pyrimidines are thymine (T) and cytosine (C). In the case of RNA, the purines are A and G and the pyrimidines are C and U (uracil)

-Transcription involves the copy of DNA in RNA. This is the process of gene expression, in which genes are converted into proteins. DNA replication is the process of copying DNA into a cell so that there are two equal copies. As a result, two double chain propellers are obtained, two exact copies. Translation is the process of translating the sequence of a messenger RNA molecule into an amino acid sequence during protein synthesis.

-Helicase breaks the hydrogen bonds that bind the nitrogen bases, causing other enzymes to copy the DNA sequence. The primase synthesizes small fragments of RNA on the lagging chain in DNA replication, of about 10 nucleotides, called primers. DNA polymerase III performs the replicative process, its function is the synthesis of DNA. It has review activity, 3’-5 ’exonuclease. DNA polymerase I has three activities. It has polymerase activity, synthesis in the 5’-3 ’direction. A 3’5 ’exonuclease activity, erroneous nucleotide removal, and a 5’-3’ exonuclease activity, which from a nick resynthesizes a portion of DNA by removing the existing one. This enzyme does not carry out the replication process. RNA polymerase is capable of using ribonucleotides to synthesize RNA from a DNA sequence that serves as a template. Ligase catalyzes the binding of two molecules from the formation of covalent bonds accompanied by the hydrolysis of ATP

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3 years ago
ASAPP HELP ME In this assignment, you will think of scientific questions that will help you better understand the role of
frosja888 [35]

1. What is the relationship between chromosomes and DNA? The chromosome is a molecule formed by a chain of DNA associated with proteins. Together, they form a group of molecules directly responsible for heredity.

2. What is heredity? It is the biological process where the genes present in a DNA are transmitted by parents to their children, through the division of gametes. These genes carry the codes that form the genotypic and phenotypic characteristics, which allows a similarity between parents and children to occur.

3. What is the role of proteins associated with the DNA molecule that makes up the gene? Proteins are responsible for keeping the DNA line tightly compressed, maintaining the chromosome structure. In addition, they control the activities of the genes present in this DNA molecule, being essential in maintaining heredity.

4. How do chromosomes participate in gene transmission? As mentioned above, genes are part of DNA and DNA is the molecule that makes up chromosomes, in this case, chromosomes are molecules loaded with genes. In the human body, cells have 46 pairs of chromosomes, with the exception of gametes that have half that number. During the reproductive process, the gametes (reproductive cells) divide and produce a new being. The mother's gametes unite with the father's gametes to form a new being. Each gamete has 23 chromosomes, which contain the genes responsible for transmitting the characteristics.

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3 years ago
Does anyone know the answer above
storchak [24]
The answer is c since a coccus is any spherical or roughly spherical bacterium.
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