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romanna [79]
3 years ago
10

In general, life needs to maintain a pH level between _____.

Biology
2 answers:
earnstyle [38]3 years ago
7 0

Answer:

B 5-8

Explanation:

Dahasolnce [82]3 years ago
4 0
<span>B. Most organisms tend to be fairly neutral in their pH level. Neutral (or close to) pH levels would be in the range between 5 and 8. A pH level of 7.0 is truly neutral, so anything in that level would be considered close to the mark. 1-4 is highly acidic and has few organisms, while 9-14 would be highly basic/alkaline and also has few creatures.</span>
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TAG CTT GGC AT What kind of mutation is this?
Olenka [21]

Answer:

Point mutation

Explanation:

This kind of mutation is the change of one nucleotide in a sequence. The mutation causes a change in the translated amino acid at this position. If the change results in a codon that codes for the same amino acid, then there is no effect. However, a different amino acid may change the properties/characteristics of the translated protein causing some effect on the phenotype of the organism bearing the mutation.

4 0
4 years ago
The brilliant research scientist, Professor "Iron-Mike" Scrawll is studying a new pore-forming toxin from the pathogenic bacteri
Dafna11 [192]

Answer:

The correct option is C - Professor Scrawll applied 100 nM BurD to the cells for 24 hours, while Dr. Bogey applied 1 nM BurD to the cells for 12 hours.

Explanation:

The correct option is C - Professor Scrawll applied 100 nM BurD to the cells for 24 hours, while Dr. Bogey applied 1 nM BurD to the cells for 12 hours.

As the exotoxin, BurD is very stable and lyse the ankle cells very quickly, more concentration and more time of action should only lyse the cells. Perhaps Dr.Bogey's ankle cells were not lysed because the concentration she used was only 1nM compared to the 100nM concentration used by Dr. Scrawll, and the time period of incubation was only 12 hours compared to the 24 hours used by Dr. Scrawll.

Considering the other explanations given in the remaining options, the concentration and time of incubation used by Dr. Bogey are more than that used by Dr. Scrawll which should only have possibly lysed the cells. Moreover, contamination with bleach also should have only lysed the cells.

5 0
3 years ago
Which of these is the source of the variation in wing color within the Peppered Moth population?
omeli [17]

Answer:

Genetic variation

Explanation:

It could lead to natural selection, but natural selection isn't the cause. Many years down the road you could see a particular variation having a higher population, which is the result of natural selection/survival of the fittest via better camouflaging from predators.

4 0
3 years ago
Which of the following describe solutions to environmental problems in the region?
alekssr [168]
"Coordination of environmental efforts between industry, government, and citizens" is the one among the following choices given in the question that describe <span>solutions to environmental problems in the region. The correct option among all the options that are given in the question is the fifth option or the last option. I hope that this is the answer that has come to your desired help.</span>
6 0
3 years ago
Complete the following sentence.
elena-s [515]

Answer:

peristalsis

Explanation:

5 0
3 years ago
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