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Elis [28]
3 years ago
13

Which of the following correctly describes the first animals that appeared according to science

Biology
1 answer:
IceJOKER [234]3 years ago
7 0
These were soft and boneless creatures I just took the test I hope this helps :D
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Julie is preparing vegetables for dinner and accidentally cuts her finger. She washes it with soap and water before covering it
Gelneren [198K]

Answer:

The correct answer is A. inflammation

Explanation:

Inflammation is the defense mechanism of the immune system which is non-specific and part of the innate immunity of the body. Inflammation is the reaction against any cell injury.  

Inflammation is categorized by heat, pain, redness(erythema), and swelling(edema). These changes occur because of the result of the increase in local blood vessel diameter which leads to increase of flow of blood that results in heat and redness.  

The transport of fluids and proteins takes place at the injury site which causes swelling and pain. Therefore the right answer is A. inflammation.

3 0
3 years ago
Nervous system found in simpler animals like jellyfish.
Flura [38]
<span>The answer is nerve net.

Jellyfish has a nerve net that surrounds its whole body. It makes a series of interconnected neurons that form net-like structure. This net surrounds the whole body of the jellyfish. Some jellyfish may have sensory structures, motor nerve net, and diffuse nerve net. Sensory structures receive environment signals and send them through diffuse nerve net to motor nerve net that activates muscle contractions.</span>
7 0
3 years ago
One of the questions early geneticists had to answer was how only four nucleotides can specify placement of 20 amino acids in pr
jenyasd209 [6]

Answer:

<h2>Codon </h2>

Explanation:

The sequence of DNA is transcribed into mRNA, containing the sequence  for protein synthesis, protein is synthesized according to the codons in mRNA.  This sequence of nucleotide on DNA/ RNA is divided into a series of three nucleotide units, and one unit of three nucleotide is  known as codons.

There are overall 64 codons, 61 codons out of 64 codons, codes for overall 20  amino acids, and the remaining three  are stop codons.

These there codon do not code for any amino acid.

And these 61 codons, they  code for total 20 amino acids. So one amino acid can be coded by one or more than one codons.

6 0
3 years ago
Do hurricanes occur in the Midwest? Why or why not?
zubka84 [21]

Answer:

Hurricanes are not common in the Midwest. However, if a hurricane is particularly strong, it can move far enough northward and inland to cause a significant rain event for areas in the Midwest.

5 0
2 years ago
The internal iliac arteries supply blood to the
Andreyy89
C or E, the Iliac arteries are split from the descending aortic artery. They split in the pelvic following the left and right lower limbs. They then turn into the femoral arteries the run on the inside of your thigh along the inner part of your femur. However, the location that they split may be just right to also supply oxygenated blood to the reproductive organs.
6 0
3 years ago
Read 2 more answers
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