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Contact [7]
3 years ago
9

Which of the following should be given to students before they begin a laboratory experiment? A) problems to practice the concep

ts in the experiment B) guidelines for safe laboratory practices and policies C) the manual fro repairing the laboratory equipment
Biology
2 answers:
alukav5142 [94]3 years ago
7 0

Answer:  B) Guidelines for safe laboratory practices and policies

Explanation: Before carrying out any experiment in the laboratory , students must be aware of the environment and ambience of the same.

Thus proper manual of guidelines and safety must be provided to the students so that any hazardous deed can be overcome.

Proper guidelines will help them to learn more about the equipment they are about to use in the laboratory .

The guidelines for safe laboratory practices and policies will help them to acknowledge and deal with any kind of unfavorable conditions if occur.

OleMash [197]3 years ago
5 0
B) guidelines for safe laboratory practices and policies
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In a healthy cell, the rate of DNA repair is equal to the rate of DNA mutation. When the rate of repair lags behind the rate of
kvv77 [185]

Answer:

The possible fate of the cell that it may turn cancerous.

Explanation:

The cells present in the body generally work in harmony. However, if a cell attains a mutation, it can make it proliferate in the case when it should not do, and make it thrive in the case when other cells are dying. Due to proliferation, the unusual cell produces more abnormal cells also known as cancerous cells. These cancerous cells become more favorable in comparison to the normal cells due to the phenomenon of natural selection. These cells eventually result in a lethal form of tumors.  

In the normal cells, the destructed gene or the damaged cells get repaired easily, in case if the damage is worse the cell dies. A protein known as p53 helps in repairing damaged cells or kills them if the damage is too severe. But in the case of cancer cells, the p53 protein does not work appropriately as they possess a mutated or changed form of p53 protein. Thus, in the case of cancerous cells, the rate of repair lags behind the rate of mutation, which makes the cancer cells thrive and increase in numbers resulting in further destruction.  

3 0
3 years ago
Can evolution be proven false?
Afina-wow [57]
I mean there is a lot of evidence that evolution has happen but i think if someone were to say it was false they would be getting into a religious beliefs. So I would say if you are using evidence than no it cannot be proven false. Hope this helps(;
6 0
3 years ago
Which individual are favored in natural selection?
Airida [17]

Hello! :)

It would take forever listing all the animals that have adaptations that helps them survive in their environment.

Natural selection is the process by which individuals with characteristics that are advantageous for reproduction in a specific environment leave more offspring in the next generation, thereby increasing the proportion of their genes in the population gene pool over time.

Hope this helped and I hope I answered in time!

Good luck!

~ Destiny ^_^

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2 years ago
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Explanation:

Proglottids are segments in cestodes that contain bot the male and female reproductive organs. These segments go ahead to make eggs and then dettach form the worm. They are excreted and become agents of infection on the next hoist. Proglittids formed near the neck of the worm are immature while those at the tail end are literally bags of mature eggs.

The scolex is the head of the worm that is attached to the host. It is also the part that ‘sucks’ nutrients from the host. It has hooks that it uses to anchor itself in the host. In some species, rather than hooks, there are suction-cups that use suction for anchorage.

Learn More:

For more on cestodes check out;

brainly.com/question/14565928

#LearnWithBrainly

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3 years ago
How many protons and neutrons does an oxygen atom have
Tresset [83]
The answer would be 8.
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