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ahrayia [7]
2 years ago
13

MORE POINTS, here you go, i Luv u all, have a nice day

Biology
1 answer:
Oxana [17]2 years ago
5 0

Answer:

hi

Explanation:

You might be interested in
Please help me as soon as possible!!!!
antiseptic1488 [7]

Answer:

The answers are:

Cell Wall:

  1. Gives plant cell its shape
  2. Rigid

Cell Membrane:

  1. Acts like a skin.
  2. More selectively controls what goes in and out of cell.
  3. Is not rigid.

Explanation:

  • The question entails the structural and functional differences of the cell wall and cell membrane.
  • The cell wall is a rigid and strong layer that covers the outside of plant cells. It is absent in animal cells.
  • The cell wall is largely composed of cellulose, hemicellulose and pectin in plants and peptidoglycan in bacteria. The cell membrane, on the other hand, is comprised of a lipid bilayer.
  • The strong and complex network of cellulose renders the cell wall rigid; whereas, as it is made up of lipid bilayer, the cell membrane is flexible and elastic.
  • Unlike the cell membrane, which allows the movement of selective substances, the cell wall does not allow any substances to pass through.
4 0
3 years ago
During a recent hurricane, 25 individuals of the same butterfly species were blown onto a barrier island in southern Florida. Pr
myrzilka [38]

Answer: Exponential

Explanation:

The main requirement for the population of a species to grow is food. When there is food, a organisms that are born will be able to live longer because food will be able to sustain them.

This is what happened with humans during the Neolithic Revolution when we began farming.

The general trend is that the more food that is available, the higher the population growth. When these butterflies arrived and found no competition for food, their population would increase in the highest way possible which is exponentially because there would be plenty of food to go around.

6 0
2 years ago
Read 2 more answers
A scientist is studying the inheritance of two characteristics in plants: red flowers (RR and Rr) , which are dominant to yellow
marin [14]

Answer:

The correct option is <em>B. Crossing- over </em>

Explanation:

In biology, crossing over can be described as a phenomenon by which homologous chromosomes exchange segments during the process of meiosis.

The unexpected results came because the DNA segment between the homologous chromosomes was exchanged during meiosis. The alleles got shuffled by this process and hence showed the unexpected results.

Crossing over and independent assortment are phenomenon which occurs only during the process of meiosis. These phenomenons cannot be observed during mitosis.

7 0
3 years ago
When nitrate is reduced to dinitrogen gas (n2), nitrogen is removed from the ecosystem and returned to the atmosphere through a
Zarrin [17]
The answer is:  "<span>denitrification" .
____________________________________________</span>
5 0
3 years ago
How to get high affinity antibody?
Anit [1.1K]

Human monoclonal antibody (mAbs) are emerging in the field of cancer therapy and have become an increasing proportion of new drugs that are recently approved. Although there are some methods to obtain antigen-specific mAbs from human B cells, it is generally impossible to directly immunize human beings with antigens of interest. For example, for infectious agents, those approaches are largely restricted. To solve these obstacles, two main approaches have been developed; either by humanizing antigen-specific antibodies from small experimental animals (which is laborious due to the great genetic differences from humans) or rely on the in vitro selection of antigen-specific binders from human antibody repertoires. However, the human mAbs developed by these methods are usually with low affinity.

We are now coming up with a much better idea that is humanizing non-human primates mAbs instead of murine mAbs. Due to the close genetic relationship with humans, immunized NHPs have more potential to be isolated with high affinity antibody to human target than other experimental species, such as mouse, rat and rabbit. In addition, with appropriate method, NHP antibodies are much<span> easier to be humanized</span> without any loss of affinity compared to widely used murine antibodies. 

Resource: http://www.creative-biolabs.com/High-Affi-TM-Human-Antibody-Discovery.html

4 0
3 years ago
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