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Lena [83]
3 years ago
13

Compare and contrast the esophagus with the small intestine pls. How are they similar?

Biology
1 answer:
r-ruslan [8.4K]3 years ago
3 0

Answer:

that connects to the small intestine. This region includes the pyloric sphincter, which is a thick ring of muscle that acts as a valve to control the emptying of stomach contents (chyme) into the duodenum (first part of the small intestine).

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Why are amoeba, paramecium, and euglena not classified as bacteria?
d1i1m1o1n [39]
Because they fall under the category of kingdom protista....these organisms are eukaryotes (they have a definite nucleus)..therefore its not classified as bacteria because bacteria doesnt have a definite nucleus
7 0
4 years ago
Read 2 more answers
Which organelle contains DNA and controls the activity in the cell?<br> ОВ<br> Ос<br> OD<br> ОЕ
IrinaK [193]

Nucleus can be defined as a large organelle found in the Eukaryotic cells and it is also  know as the cell's command center,thus it controls the activity of the cells

Explanation:

  • The answer to the above question is (c )nucleus. During the cell cycle the nucleus of the cell mediates the replication of the of the DNA and controls the gene expression.
  • The nucleus contains a structure which is known as nucleolus and which is made up of protein and ribonucleic acid(RNA)

7 0
3 years ago
In a certain plant, the allele for red flower color (R) is dominant over the allele for white flower color (r). A cross is perfo
Iteru [2.4K]

Answer:

Rr and rr

Explanation:

The genotypes of the parents would be heterozygous red (Rr) and true-breeding white (rr).

<em>Since the allele for the red flower color (R) is dominant over that of the white flower color (r), for a cross to produce both red and white flower color plants, the red parent must be heterozygous (Rr) and the white parent true-breeding (rr). </em>

       Rr    x    rr

   Rr    Rr    rr    rr

Rr = red

rr = white

If the red parents is true-breeding

        RR    x    rr

      Rr    Rr   Rr    Rr

All their offspring would be red without any white flower color.

Hence, the genotypes of the parent are Rr and rr.

3 0
3 years ago
A patient is seen for three extra visits during the third trimester of her pregnancy because of her history of pre-eclampsia dur
Alex787 [66]
The ICD-10-CM that should be reported is the O10.013. This is for pregnancies with pre-existing hypertension complicating the pregnancy in the third trimester. Since the patient is predisposed to pre-eclampsia from previous pregnancy and she is in her third trimester, the code to be used is O10.013.
7 0
3 years ago
In 1918, the Russian Tsar Nicholas II was deposed, and he and his family were reportedly executed and buried in a shallow grave.
GaryK [48]

Answer:

By making a paternity test by Short tandem repeats, or STRs (microsatellites).

Explanation:

Short tandem repeats, or STRs, are microsatellites consisting of repeated sequences of 2 to 6 base pair length monomers  in tandem, and most of them have a high degree of polymorphism. Half of an individual microsatellites are inherited by each parent, and they can be assesed by PCR amplification and further electrophoresis.

In this case, you would try to recover a bone from the remainings of the woman, the Tsar and his wife, since the rest of the latest were in a shallow grave with many different individuals. Preferably, you should manipulate this samples in an ancient DNA facility (aDNA) with proper techniques. You clean the bone samples, drill them, and from internal bone powder make a DNA extraction. After this, you perform a series of PCR targeting a panel of STRs, and electrophoresis. If the woman claim is true, half of her microsatellites should have correspondence with the Tsar, and half with the ones of his wife.

4 0
4 years ago
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