I WILL GIVE 25 POINTS IF YOU SOLVE THESE What is the main point of the passage?

A Food undergoes much physical, but little chemical change during its journey through the body.

B Food is chemically, but not physically altered by the body when eaten.

C Food goes through both chemical and physical changes when eaten.

D Food comes out the body in basically the same form it goes in.

Which of the following statements about the changes food goes through is correct?

A There is a chemical change when saliva moves from the salivary glands into the mouth.

B There is a physical change when saliva changes bread into sugars.

C There is a physical change when the teeth grind food into smaller pieces.

D There is a chemical change when the tongue forms the food into a wad.

3 According to the context of paragraph 3, the term vat refers to .

A the esophagus B a large vessel C a flap
D the villi

4 After the nutrients are extracted, where does the food go, waiting to be expelled?

A The large intestine

B The esophagus C The stomach D The mouth
5 Based on the sequence described in the passage, which part of the digestive system is labeled (3) in the diagram above?

A The stomach

B The esophagus

C The large intestine

D The small intestine

transcription is a process in which information is rewritten. it is something our cells must do, in a more specialized and narrowly defined way. in biology, transcription is the process of copying out the dna sequence of a gene in the similar alphabet of rna. it needs to happen in the nucleus because that's where the dna is. dna is always inside the nucleus unless the cell is dividing.

transcription is the first step in gene expression, which involves copying a gene's dna sequence to make an rna molecule. transcription is performed by rna polymerases. it has three stages: initiation, elongation, and termination. rna molecules must be processed after transcription in eukaryotes.

explanation:

long version:

the protein synthesis consists two processes which are, transcription and translation. transcription takes place in the nucleus. it uses dna as a template to make an rna molecule. rna then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. transcription is the first part of the central dogma of molecular biology: dna → rna. it is the transfer of genetic instructions in dna to messenger rna (mrna). during transcription, a strand of mrna is made that is complementary to a strand of dna.  

these three stages are:

  initiation: in which   is the beginning of transcription.occuring when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

    elongation: in which is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

    termination: in which is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.

segmented body, an exoskeleton made from chitin, and joint appendages.