Biology, 04.02.2020 18:57 gabbys2002

Hydrocarbon-containing natural resources burned for energy

Answers: 2

Show answers

Answers

Answer from: Quest

step 1: initiation

initiation is the beginning of transcription. it occurs 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.

step 2: elongation

elongation 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.

step 3: termination

termination 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.

Answer from: Quest

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion. lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection. sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin. goblet cells - secrete mucus for protection.

Answer from: Quest

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.

Answer from: Quest

Yes yes yes very good

Other questions on the subject: Biology

Biology, 22.06.2019 08:30, victory08

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

Answers: 2

continue

Biology, 22.06.2019 13:00, superbatman9193

Which level of taxonomy has the fewest organisms?

Answers: 3

continue

Biology, 22.06.2019 15:00, afrimart1

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?

Answers: 1

continue

Biology, 22.06.2019 15:30, gracebuffum

The hardy-weinberg principle is that genetic frequencies in a population? will remain stable from generation to generation will always be changing will not be affected by environmental changes are always in a 3: 1 ratio

Answers: 3

continue

You know the right answer?

Hydrocarbon-containing natural resources burned for energy...