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Katarina [22]
3 years ago
15

How many genders are there?

Biology
1 answer:
Burka [1]3 years ago
8 0
There are two genders.
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What does a pyramid of biomass represent? A. Range of food webs found in one trophic level B. Percentage of energy that's passed
Klio2033 [76]

The pyramid of biomass represents a range of food webs found in one trophic level

A pyramid of biomass refers to graphical representation of biomass that is present per unit area of all the various trophic levels of the ecosystem.

<h2>Further Explanation</h2>

The graphical representation shows the relationship between biomass and trophic level that quantify the biomass that is present in each trophic level of energy community at a given period of time.

There are two types of pyramid of biomass, they include

  • Inverted pyramid of biomass  
  • The upright pyramid of biomass  

Inverted pyramid of biomass: a very good example of inverted pyramid can be seen in a case of pond ecosystem, where major producers in the ecosystem (mass of phytoplankton) will be lower than the mass of heterotrophs, such as insects.  

The upright pyramid: The first thing on the upright pyramid is the producers, such as plants. The plants are present at the bottom level of the pyramid and followed by consumers.

Within the pyramid, the highest level is occupied by the carnivores; they are the lowest quantified amount of biomass. In upright pyramid the total weight of the producers is far more than when the weights of all the consumers are combined.  

However, the main issues with the pyramid of biomass are that every trophic level of the pyramid seems to have more energy than it does.

LEARN MORE:

  • pyramid of biomass brainly.com/question/12655542

KEYWORDS:

  • pyramid of biomass
  • trophic level
  • consumers
  • graphical representation
  • ecosystem
8 0
3 years ago
Read 2 more answers
Archimedes principle​
prisoha [69]

Answer:

Archimedes principle

Explanation:

Any object, totally or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object.

7 0
3 years ago
How many elements are in this formula? How many molecules?
Mariana [72]
I only know this so far-

4 elements
Nitrogen (N)
Hydrogen (H)
Sulfur (S)
Oxygen (O)

8 0
2 years ago
Read 2 more answers
When the land or oceans are heated unevenly<br> form.
Mamont248 [21]

Answer:

What's your question?

Explanation:

4 0
3 years ago
A plasmid contains the gene for tetracycline resistance and a lacz gene that has a restriction site in it. Foreign dna has the s
tester [92]

Answer:

The colonies are carrying the resistance genes from plasmids

Explanation:

Bacteria can acquire beneficial characteristics that they didn’t have. One way for these is through plasmids, which ones are little fragments of DNA that usually contains resistance genes (for antibiotics, disinfectants, heavy metals, etc.) or other capacities, like the ability to use some substances (for example sugars).

In this specific situation, we already know that the plasmid carrying genes for tetracycline resistance and the <em>lacZ</em> gene.  

A little explanation:

Tetracycline is an antibiotic that inhibits bacterial growth and kills the bacteria.  The bacteria can “fight” to this antibiotic if it has a resistant gene, the result is that the antibiotic can’t affect the bacteria and survive.  An analogy is like a Police Officer (bacteria) that have a bulletproof vest (tetracycline-resistant gene) so the bullets (tetracycline) didn’t affect the police.

In the case of X-gal, is a compound consisting primarily in one sugar called galactose. Not all bacteria can eat galactose, they need an enzyme called β- galactosidase (comes from <em>lacZ</em> gene) that helps the bacteria “eat” the sugar (cuts the sugar in little pieces so the bacteria can eat).  

Then, as the bacterial colonies can grow in the medium with tetracycline and X-gal,  we know that those bacteria are carrying the resistance genes for tetracycline (does not affect the bacteria) and the <em>lacZ</em> gene (bacteria produce β- galactosidase that cuts galactose). These genes are coming from the plasmids because we already know that the plasmid carries these genes and not from the exogenous DNA.  

7 0
3 years ago
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