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ale4655 [162]
2 years ago
12

How are SA node cells similar to nerve cells?

Biology
1 answer:
d1i1m1o1n [39]2 years ago
8 0

Answer:

It has property of automaticity. Is is modified myocyte and depolarizes on its own and doesn't require and nerve.

Explanation:

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Which sentence correctly describes the relationship between DNA, genes, and chromosomes? A gene is a segment on the DNA. DNA is
kotykmax [81]
<h2>Answer:</h2>

The correct statement is option A which is, "A gene is a segment on the DNA. DNA is wrapped in proteins to form a chromosome".

<h3>Explanation:</h3>
  • A gene is the part of DNA in the nucleus which encodes for the specific trait in the body. DNA is the nucleotide sequence which is the blue print for the whole organism. It contains genes for all the structures and functions in the body.
  • So it is very long sequence containing the million of genes. So in nucleus it is present in compress form. It is wrapped on the histones proteins and condense and supersondense into a specific structure which is known as chromosome.
8 0
3 years ago
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Which of the following is NOT a vascular tissue in a plant?
madam [21]
Parenchyma is the answer because whereas the other two, xylem and phloem are vascular tissues, parenchyma is a packing tissue.
3 0
2 years ago
Is paramecium a unicellular or multicellular organism
Ksivusya [100]
<h2>Answer:</h2>

Paramecium is the single celled organism (unicellular).

<h3>Explanation:</h3>
  • An organism which contain only one cell is known as unicellular organism.
  • Paramecium is the unicellular parasite. It can move and digest food.
  • In its structure there are food vacuoles for the digestion of food.
  • Paramecium is the eukaryotic organism because it has a well organised cell with distinct nuclear membrane.
  • It belongs to kingdom protista.
5 0
3 years ago
70 points! b) How do scientists make a person's genes fluoresce? (2 points)
pav-90 [236]
Scientists make a person’s genes fluoresces by having to name a variety of chromosomes on what color would variant. What would it do is that it can find it’s whole color scheme in order to locate the chromosomes which is basically a spectral karyotype.
3 0
3 years ago
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In amino acid monomers, the side group (R) is covalently bound to:
marissa [1.9K]

Answer:

a. The alpha-carbon

Explanation:

An amino acid is an organic molecule that contains a carboxyl (COOH) and a amino (NH2) group. It has a central carbon called as alpha carbon.

The carboxyl and amino groups are attached to the the alpha carbon. Apart from them, a side chain denoted by "R" is also covalently attached to it. Side chain varies in each amino acid and it imparts the unique properties to the particular amino acid.

4 0
3 years ago
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