Determine whether each statement is true (T) or false (F). Place your answer in the
blank space given.
a. F. W. Went isolated the chemical substance responsible for
communicating stimulus information.
b. The chemical substance responsible for communicating stimulus
information is a hormone.
c. Charles and Francis Darwin confirmed that the tip of a plant stem is
responsible for initiating the phototropic response.
d. When the tip of a stem is covered with a transparent cap, the stem bends
toward the light source anyway.
e. When the base of a stem is covered with an opaque shield, the stem
bends away from the light source.
f. An example of another control mechanism is that some plants require
more than 12 hours of darkness to produce flowers.

a. F. W. Went isolated the chemical substance responsible for

communicating stimulus information- TRUE

b. The chemical substance responsible for communicating stimulus

information is a hormone- TRUE

c.Charles and Francis Darwin confirmed that the tip of a plant stem is

responsible for initiating the phototropic response- TRUE

d.When the tip of a stem is covered with a transparent cap, the stem bends

toward the light source anyway- TRUE

e. When the base of a stem is covered with an opaque shield, the stem

bends away from the light source- FALSE

f. An example of another control mechanism is that some plants require

more than 12 hours of darkness to produce flowers- TRUE

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.