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topjm [15]
3 years ago
13

There are four steps in bacterial conjugation. The second step is missing in this list

Biology
2 answers:
OleMash [197]3 years ago
6 0
B. After the pilas connection between the two bacteria, the cell wall is nicked, whereby the DNA of one cell is transferred to the other.
Furkat [3]3 years ago
6 0

Answer:

2. The Fusion of cell membranes and transfer of single strand of plasmid DNA of donor cell.

Explanation:

When one bacterium transfers its genetic material through direct contact to others. The bacterium transfers its genetic material called <u>donor cell</u> and one serves it called <u>recipient cell.</u>

There are mainly four steps in this process-

1. Connecting sex pilus to recipient cell by donor cell.

2. The Fusion of cell membranes and transfer of single strand of DNA to the recipient cell.

3. Each bacterium cell makes a complementary DNA strand.

4. Both bacterium cells separates.

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A certain area received a large amount of rain and some of it remained on top of the soil. What happened to the rest of this wat
ValentinkaMS [17]

In the large rainfall is some water remains in the top of the soil the rest of this water is seeped into the ground.

<u>Explanation:</u>

  • Mainly the absorption of water by the ground depends upon the nature and the fertility of the soil.  
  • When the ground receives the water it mainly accounts for the absorption and then there will be a runoff. The absorption helps to raise the level of groundwater for future usage.
  • The amount of water that can get into the soil mainly depends upon the permeability of the soil surface. The water which can't infiltrate in the soil runs off into the water bodies.  
  • The water is an essential requirement for survival and the existence of biological organisms.
7 0
3 years ago
What are the end products of the electron transport chain?
solong [7]

The end products of electron transport chain are:

Water

Adenosine triphosphate (ATP)

Explanation:

  • Most of the free energy released during the oxidation of  glucose to CO₂ is retained in the reduced co-enzyme NADH and FADH₂, generated during the kreb's cycle.
  • Electron are released from these co-enzymes and are eventually transferred to an oxygen molecule to form water.
  • These transfer of electron from co-enzymes to oxygen molecule occurs through a series of protein complexes in the mitochondrial membrane. And the process is termed as Electron Transport Chain.
  • The large amount of free energy is released during the oxidation of NADH and FADH₂ is used in the production of ATP
6 0
3 years ago
What does a human neuron use to send a signal to the brain in response to a stimulus such as touch?
Vinvika [58]

Answer:

D.electrical signals and chemical neurotransmitters

Explanation:

chemical transmitters are the language that neurons use to connect eachother.

5 0
3 years ago
Describe the role of producers in a food web. Are producers the basis of all food webs? Justify your answer. please help me!!!
Thepotemich [5.8K]

Answer:

The producers play main role in the food chain and food web as well. These organism make food by the help of the process known as photosynthesis.

Only producers have the ability to make food by trapping sunlight. All the living source needs energy to survive.

The source of food is producers so living things cannot survive without food. So there producers are considered as the main component of food chains and food web.

hence, they play a very vital role in the environment.

6 0
3 years ago
Read 2 more answers
What stage of mitosis is depicted by the image above?
Naya [18.7K]

Answer:

telophase

Explanation:

because the chromatids are pulled to the opposite sides

8 0
2 years ago
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