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3 years ago

What was simulated in the Miller-Urey experiment?

Biology

2 answers:

Sergeu [11.5K]3 years ago

6 0

Explanation:

c. high winds. is the answer

ruslelena [56]3 years ago

3 0

Answer:

b. lightning bolts

Explanation:

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A pathogenic strain of bacteria has become resistant to an antibiotic that once could kill it. What has happened to these bacter

Andrews [41]

The answer is -Only the few bacteria that were immune to the antibiotic survived and reproduced, making all their offspring immune to it as well.

Bacteria (or any other organism) are not able to make changes to their DNA in order to protect themselves or to learn to remove the receptors on their cell surfaces. If they were able to produce toxins against the antibiotics, they would all survive.
These leave the second choice as the correct answer. This is the real situation, and is a good example of natural selection.

6 0

3 years ago

Which of the following sequences shows a frameshift mutation compared to the wild-type mRNA sequence?

Butoxors [25]

Option C:

B. wild-type 5-AUGCAUACAUUGGAGUGA-3 mutant 5'-AUGCAUACAUCUGGAGUGA- 3'

Explanation:

A frameshift mutation is a genetic mutation such that the triplet nature of gene expression by codons, the insertion or deletion occurs in such as way that it alters the complete sequence of 3 codon sets and can change the reading frame, resulting in a completely different translation from the original.

As it is pertinent to understanding that all genes are normally translated in sets of 3 codons, which typically describes and explain a unique amino acid sequence. Thus, if a frame shift mutation occurs, it can affect many amino acid sequences and finally the entire protein.

If we look at option B:

wild-type 5-AUG CAU ACA UUG GAG UGA-3

mutant 5’- AUG CAU ACA UCU GGA GUG A-3’

An insertion of a base Uracil showed at the end of 3rd codon which affected and altered the whole sequence of codon triplets. This changed all next codons and finally all next amino acids will be altered.

8 0

3 years ago

Nitrogen is a critical component of what organic compounds?

BartSMP [9]

Answer:

Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.

Explanation:

(I just copy and paste from google)

3 0

3 years ago

Read 2 more answers

I would really appreciate some help with this science question!

jasenka [17]

so you’d need to find the amount of gallons your family uses in 11 minutes and subtract 73000 from that number

i used the same formula, came up with 80300 gallons a year, and subtracted 73000 from it to get

7300 gallons are saved by reducing showering time by one minute

6 0

3 years ago

1.Write the part of the brain that preforms each of the functions shown below.

Damm [24]

The parts of the brain of a living organism which perform each of the functions are listed as follows:

Hypothalamus: it regulates sleep.

Optic nerve: it connects brain and eyes.

Cerebellum: it controls balance.

The frontal lobe: it controls thinking.

The brain stem: it controls breathing and heart rate.

The nucleus accumbens: it is the pleasure center.

<h3>What is a brain?</h3>

A brain can be defined as an organ of soft-nerve tissue that is found within the skull of vertebrates, and it's mainly responsible for the coordination of nervous activities, sensation and intellect in living organisms.

Based on scientific records and information, the two (2) sides of the brain (symmetrical left and right hemispheres) are able to communicate through the corpus callosum.

In conclusion, we can infer and logically deduce that the parts of the brain of a living organism which perform each of the functions are listed as follows:

Hypothalamus: it regulates sleep.

Optic nerve: it connects brain and eyes.

Cerebellum: it controls balance.

The frontal lobe: it controls thinking.

The brain stem: it controls breathing and heart rate.

The nucleus accumbens: it is the pleasure center.

Read more on brain here: brainly.com/question/1287304

#SPJ1

7 0

2 years ago