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Advocard [28]
3 years ago
7

Which of the following would most likely happen if the epithelial cells in the stomach failed to produce mucus? (2 points)

Biology
1 answer:
maksim [4K]3 years ago
4 0
<span>Gastric juice would digest the stomach lining, resulting in ulcers.

</span>
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What started the study of the field of genetic engineering?
Margaret [11]

Answer:

Genetic engineering has its grass roots from the recombinant technology.

Explanation:

Genetic engineering is seen to have started from a scientists activity which involved restriction enzymes and DNA ligases that were used by Paul Berg in 1972 to create the first recombinant DNA molecules. A monkey virus which is SV40 was combined with a lambda one. Following that, the results of the experiment and attempts were further investigated by other scientists and later, the first plant that underwent genetic engineering was the plant tobacco.

8 0
3 years ago
Write the complementary sequence for the following DNA sequence, in order from 3' to 5': 5′−CGATATTGAGCTAAGCTT−3′ Use all capita
sveta [45]

Answer:

3'-GCTATAACTCGATTCGAA-5'

Explanation:

The DNA is a macromolecule formed by two strands of polynucleotides forming a double helix.

These chains are composed of monomers called nucleotides, there are 4 different types in DNA, called nitrogenous bases: two purines, guanine (G) and adenine (A) and two pyrimidines, thymine (T) and cytosine (C). They are joined by covalent bonds in each chain.

These bases are complementary: G with C, and A with T between the two strands by hydrogen bonds making the double-stranded DNA molecule.

A sequence 5'-CGAT-3' is equivalent to a sequence written 3'-ATCG-5' , because the 5' and 3' notation defines the direction of reading. If one strand is noted 5' to 3', then the complementary strand will be from 3' to 5' in the same sense.

So, all we need to do is write the complementary bases from the 3' end to 5':

5'-CGATATTGAGCTAAGCTT-3'  

3'-GCTATAACTCGATTCGAA-5'  (answer)

5 0
3 years ago
The dropping of leaves in the fall is the tree's response to what stimuli
astra-53 [7]
I think its photosynthesis
8 0
4 years ago
Who first asserted that scientists should conduct repeated observations and practical experiments to answer specific questions?
Lostsunrise [7]
Francis Bacon is the correct answer.
5 0
4 years ago
Energy and Matter Energy cannot be created or destroyed. Explain how energy is conserved in cellular respiration. Include in you
wolverine [178]

Answer:

In the organism matter and energy also follows the law of conversion which means energy or matter can not be created or destroyed, it just changes its form in any system.

Cellular respiration is a catabolic reaction that converts chemical energy in the form of the energy that is used by the cell by breaking the complex sugar and other macromolecules into simple and smaller components and release waste products with the energy in ATP (a useable form of energy for the cell).

The energy stored in the bonds of the sugar and other organic molecules take place in this process converted into the chemical bond formed in ATP, is exactly the same only changed its form.

3 0
3 years ago
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