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kiruha [24]
3 years ago
9

Please help me out! What would an environmentally friendly system look like?

Biology
1 answer:
slamgirl [31]3 years ago
7 0

Answer:

No harm upon ecosystems or the environment, prevention of any harmful contributions to air, water and land pollution.

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Who devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations?.
Dominik [7]

Landsteiner Bertillon devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations.

<h3>What about blood group?</h3>
  • According to the presence or absence of antibodies and hereditary antigenic compounds on the surface of red blood cells, blood is classified according to its type.
  • Depending on the blood group system, these antigens could be proteins, carbohydrates, glycoproteins, or glycolipids.
  • The genes that a person got from their parents determine what blood type they have.
  • There are numerous systems for classifying blood types, but ABO is the most popular one.
  • The ABO group is divided into four main categories: A, B, O, and AB.
  • There are eight more blood types within these groupings.
  • Each of the eight blood types has a particular ability to save lives.
  • The majority of people (37% of the population) have the blood type O+, which is the most prevalent. This indicates that there is a greater need for this blood type for blood transfusions.

Learn more about blood group here:

brainly.com/question/15289194

#SPJ4

6 0
1 year ago
1. Which of these describes the role of DNA in a cell? *
kondaur [170]

Answer:

c. DNA provides the information to make proteins for the cell.

3 0
3 years ago
Which types of mutations in the lac operon stop Escherichia coli from utilizing lactose as a carbon source? a) promoter deletion
Sladkaya [172]

Answer:

D.) repressor DNA-binding site mutation

Explanation:

lacl prevents the repressor polypeptide is a mutant that prevent operon from binding lactose, and thus will bind to the operator and be non-inducible.. This mutant will represses the lac operon whether lactose is present or not and the lac operon will not be expressed. It is also called“super-supperesor".

The lacI locus – One type of mutant allele of lacI (callled I-) prevents the production of a repressor polypeptide or produces a polypeptide that will not allow to bind to the operator sequence.

This is also a constitutive expresser of the lac operon because absence of repressor binding permits transcription.

7 0
3 years ago
If air pressure is getting lower what would happen to torricelli's mercury barometer?
Tcecarenko [31]
It will get lower since the pressure around the barometer gets lower

7 0
3 years ago
The layer of photoreceptors and other neurons at the back of the eye is called the _____________. iris retina cochlea optic nerv
riadik2000 [5.3K]
Photo receptors are attached to the retina and are most numerous specifically at the fovea
4 0
3 years ago
Read 2 more answers
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