2 Wood e
Nean X M Inbox
usatestprep. com/modules/combined/ca. php?testid=1741&strand-8692& ;id=BM2197410&assignment_id:416 54411.
Copper No reaction even when gently heated
Little initial reaction
More vigorous reaction when heated
Iron
Positive test for hydrogen gas
Solution turned from colorless to yellow
Vigorous initial reaction; rapid evolution of gas.
Positive test for hydrogen gas.
Magnesium
All of the magnesium seemed to disappear
Solution remained colorless.
Initial reaction produced rapid evolution of gas; less vigorous than magnesium
Zinc All of the zinc seemed to disappear.
Solution remained colorless.
Formulas
Students in Ms. Brown demonstrated several chemical reactions but the data did not represent the law of conservation
of matter in any of the four experiments. Kai and Maria are about to add 3 grams of magnesium (Mg) to a test tube of
30 grams of hydrochloric acid (HCI). They covered their container with a balloon as a seal. If the girls expect a
chemical change as well as evidence of the law of conservation of matter, choose ALL of the predictions that are
appropriate?
6)
A)
There will be a rapid evolution of gas. ,
B)
The mass of the products will equal 339.
O
The solid magnesium metal will disappear.
D)
The balloon covering the container will expand.
E
There will be a dramatic change in temperature,
O
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hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest

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.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products