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vodomira [7]
4 years ago
8

Question 3 of 25

Biology
2 answers:
Nesterboy [21]4 years ago
7 0
500 because the first thing that needs to be used
gavmur [86]4 years ago
5 0

Answer:

texas

Explanation:

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What is compression?
zmey [24]
The action of compressing or being compressed.
the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition.
8 0
3 years ago
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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

4 0
3 years ago
Which of the following events is typical of meiosis but not of mitosis?
marin [14]

Answer:

D. the homologous chromosomes are paired AND the spindle is formed

Explanation:

Meiosis is the type of cell division that results in four daughter cells with each having a reduced number of chromosomes (by half). Both meiosis and mitosis occur in different stages including prophase, metaphase, anaphase etc but meiosis occurs in two series of division processes called meiosis I and meiosis II.

In prophase I of meiosis, homologous chromosomes, which are similar but non-identical chromosomes from male and female parents pair to form tetrad or bivalent. This pairing of homologous chromosome is unique and peculiar to MEIOSIS but never mitosis.

8 0
3 years ago
Blood typing is based on the presence of proteins known as __________ on the outer surface of the red blood cell plasma membrane
tensa zangetsu [6.8K]

Answer: Option B) Antigens

Blood typing is based on the presence of proteins known as antigens on the outer surface of the red blood cell plasma membrane.

Explanation:

Blood groups A, B, AB, and O are determined based on the antigen-antibody reactions between donor and recipient bloods.

For instance,

- Blood type A has antigen A on its plasma membrane

- Blood type B has antigen B on its plasma membrane

- Blood type AB has both antigen A and antigen B on its plasma membrane

- while blood type O has neither antigen A nor B on its plasma membrane

So, antigens is the answer

8 0
4 years ago
How old are do fishes live up too?
Nat2105 [25]
Different types of fish live for different amount of times. For example, Bettas live up to two years, Loaches live u to 10 years, and Goldfish live for a few or many decades. Most of the average fish don't live up as long as they could.
My source: Goggle.com.

I truly hope this helped!
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4 years ago
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