Pepsinogen is a chemical that is created by the cells that exist in the stomach. During digestion, pepsinogen is converted into pepsin by the acid in the stomach, and pepsin is responsible for breaking down the proteins in food. The formation steps are as;

Step 1: The DNA strands unwind, and RNA polymerase binds to the template strand.

Step 2: The synthesis of mRNA begins. The amino acids assemble to form peptide.

Step 3: The mRNA undergoes intron splicing and exits the nucleus.

Step 4: The tRNA moves through mRNA with the activated amino acids attached to it.

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5 0

1 year ago

In the alteration of generations life cycle the spore undergoes mitosis to become a A) gametophyte B) sproohyte C) spore D) game

Eva8 [605]

<span>A mature sporophyte produces spores by meiosis, a process which reduces the number of chromosomes to half, from 2n to n. Because meiosis is a key step in the alternation of generations, it is likely that meiosis has a fundamental adaptive function. The nature of this function is still unresolved (see Meiosis), but the two main ideas are that meiosis is adaptive because it facilitates repair of DNA damages and/or that it generates genetic variation. The haploid spores germinate and grow into a haploid gametophyte. At maturity, the gametophyte produces gametes by mitosis, which does not alter the number of chromosomes. Two gametes (originating from different organisms of the same species or from the same organism) fuse to produce a zygote, which develops into a diploid sporophyte.</span>

3 0

3 years ago

Human activity, such as the burning of coal and oil, refining petroleum in factories has impacted which of the following

Zarrin [17]

Answer:

carbon cycle

Explanation:

Carbon is an essential element in the bodies of living organisms. It is also economically important to modern humans, in the form of fossil fuels.

Carbon dioxide—\text {CO}_2CO

start text, C, O, end text, start subscript, 2, end subscript—from the atmosphere is taken up by photosynthetic organisms and used to make organic molecules, which travel through food chains. In the end, the carbon atoms are released as \text {CO}_2CO

start text, C, O, end text, start subscript, 2, end subscript in respiration.

Slow geological processes, including the formation of sedimentary rock and fossil fuels, contribute to the carbon cycle over long timescales.

Some human activities, such as burning of fossil fuels and deforestation, increase atmospheric \text{CO}_2CO

start text, C, O, end text, start subscript, 2, end subscript and affect Earth's climate and oceans.

4 0

3 years ago

Read 2 more answers

After creating a hypothesis, what is the next step in Mary and Jim's investigation?

vovikov84 [41]

They'll have to do the following 2 stpes:

- Look for evidence that suports their conclusion

- Do tests in order to prove their hypothesis

Hope it helped,

BioTeacher101

8 0

3 years ago

Read 2 more answers