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scoray [572]
3 years ago
12

Can someone plz explain to me in a paragraph how can pythons affect the everglades.

Biology
1 answer:
madam [21]3 years ago
8 0

Pythons are affecting everglades very negatively they are causing chaos in the food pyramid attacking all levels and not having predators prey on them pythons have become a huge problem that must be dealt with quickly because their affects are being felt quickly and very largely.

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The neurons that carry information from the receptors in the eyes, ears, and skin to the brain and spinal cord are called _____
belka [17]

Answer:

Sensory neurons

Explanation:

Neurons are specialized somatic cells which are responsible of conveying stimuli from the enviroment.

They are made up of three parts; cell body, dendrites and an axon.

Sensory neurons are one of the three types of neurons.

They are responsible of carrying stimuli from external body parts to the central nervous system.

On the other hand, motor neurons carries signals from the brain to other body organs.

The third type is called interneuron, it is located in the brain and nowhere else. It acts as a linkage between other neurons and the brain.

5 0
3 years ago
Read 2 more answers
Many species of gulls feed their chicks by regurgitating food. When parents return from foraging, the gull chicks peck at a red
makvit [3.9K]

Answer:

fixed action pattern, key stimulus; key stimulus, fixed action pattern

Explanation:

  • An innate behavior which specific to a species and is highly stereotyped is termed as a fixed action pattern.
  • This behavior occurs due to a neuronal network that is hard-wired in the species and the response is said to be generated following a key stimulus.
  • A key stimulus is the one that generates a fixed action pattern and this is also called a releaser.
  • A key stimulus can be in the form of shape, sound, color, or a combination of these.
  • In this case, the red spot is a stimulus for the chicks which causes them to peck at their parent's bill, and hence, the red spot is a key stimulus, and pecking of the chicks is a fixed action pattern.
  • The parents regurgitate the food only when the chicks peck at their bills, so pecking is a key stimulus for the parents which causes them to regurgitate the food which is a fixed action pattern.
4 0
3 years ago
In colorectal cancer, some tumor suppressor genes are inactive. This is an important factor resulting in uncontrolled cell divis
tresset_1 [31]

Answer/Explanation:

(1) a mutation in the coding region, resulting in an inactive protein

To check to see if there is a mutation, you could extract the DNA from the cancer cells and then perform PCR to amplify the gene of interest. You could then perform sanger sequencing and compare the sequence to the normal gene to see if a mutation is present. To test the effect of the mutation, you would want to see if an active protein has been formed.

To see if a normal sized protein has been formed, you could perform a western blot, comparing the protein band to the WT protein band. If the protein is absent or much smaller, it is likely not a functional protein.

(2) epigenetic silencing at the promoter of the gene, resulting in reduced transcription.

To check for changes in the epigenetic landscape of the promoter, you could perform chromatin immunoprecipitation by extracting the chromatin from the tumour cells and using antibodies for different chromatin marks to see what has changed between the normal cells and the tumor cells. E.g. H3K9me3, H3K27me3. You would perform a pull down with the antibody of interest and then PCR for your promoter to specifically look at changes at that gene compared to normal cells. To test DNA methylation, you could perform bisulfite sequencing.

To see how transcription is affected, you could extract RNA from the tumor and normal cells, and compare the levels of RNA between the two samples by qRT-PCR

3 0
3 years ago
As many as _____ percent of cases of erectile disorder are caused by medical conditions such as cardiovascular disease, multiple
pshichka [43]
35 percent of cases of erectile
4 0
3 years ago
What are the reactants and products of photosynthesis and cellular respiration?
antoniya [11.8K]
Photosynthesis:
   1) Reactants = CO2, Water, Sunlight
   2) Products   = O2, Glucose, 

Cellular Respiration:
   1) Reactants = O2, Glucose
   2) Products   = CO2, Energy (in ATP)

Hope this helps!
6 0
3 years ago
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