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Mnenie [13.5K]
3 years ago
6

Which is an example of mechanical digestion that occurs in the human digestive system?

Biology
1 answer:
Effectus [21]3 years ago
3 0

Answer:

Saliva in the mouth acts to moisten and break apart food molecules

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Biology Grade 8
harkovskaia [24]

Answer:

cell=ova

plant=organism

tissue=group of similar cells

nose=organ

organelle=nucleus

5 0
2 years ago
The location of the neritic zone is determined by ______
EleoNora [17]
The answer is D. 
hope it helps:)
4 0
3 years ago
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Without adding specific regulatory proteins, how might you stimulate transcription from the gene of interest relative to the tra
german

Answer:

By transfecting small activating RNAs

Explanation:

Small activating RNAs (saRNAs) are an emerging class of non-coding RNAs (ncRNAs) that are capable of activating gene expression at transcriptional level. The saRNAs are small double-stranded RNAs (dsRNAs) that bind to promoter sequences in order to activate the expression of target genes. These molecules are structurally similar to small interfering RNAs (siRNAs), i.e., they also have a size of 21 nucleotides and two overhang nucleotides at the 3' end of both strands.

4 0
2 years ago
Which is an example of an insertion mutation that changes all of the amino acids that follow the mutation?
astra-53 [7]

Answer:


2) CAG - TTC - ACG mutates to CAG - TTC - ACC - ACG

Explanation:

Insertions are mutations in which extra base pairs are inserted into a new place in the DNA. The number of base pairs inserted can range from one to thousands!

In option no. 1: We see that there is not addition of a single or more than one base, but the new base sequence is different from the original sequence at three places i.e: TTA - CAC - G

In option no. 2: The insertion of three bases ACC has been made exactly after TTC, the whole sequence and arrangement of bases remain same except this insertion.


In option no. 3: The first base of the sequence T is replaced with A, and all other sequence is same. This type of mutation is called substitution in which one base is replaced by other.


In option no. 4: The last base of the sequence C is deleted, and is not present in new sequence. This type of mutation is called deletion in which a base is removed from the sequence.


Conclusion: Therefore, the best option is 2, in which whole codon is inserted in the DNA base sequence.



7 0
2 years ago
Read 2 more answers
How does xylem differ from phloem?​
Stella [2.4K]

Answer:

Xylem is different from phloem structurally and functionally

Explanation:

Xylem conducts water and minerals to the leaves where phloem transports the prepared food from leaves to different parts of plant body.

6 0
2 years ago
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