2. In series, we add the resistance up
Use the formula V = IR to find the current.
R = 10+4 = 14, V=42
42=I (14)
I = 42/14 = 3 A
3. Closed
4. Answer B
This is because unlike poles attract and like poles repel.
Hope it helped!
Answer:
Malthus.
Explanation:
<em>Malthus formulated what is today known as the Malthusian catastrophe during which he explained that limited resources put a check on the population of humans. He further explained that limited resources will provoke competition.</em>
<em>Darwin later adopted the idea of competition to develop the theory of survival of the fittest, also known as natural selection.</em>
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Answer:
Gene expression
Explanation:
The information a living organism needs is embedded in the genes found in the genetic material (DNA) of that organism. These information, however, are stored in the DNA and needs to be used to produce useful products (usually proteins). This process is called GENE EXPRESSION. Gene expression occurs in two steps; transcription and translation.
Transcription is the process whereby the information in the DNA is copied into a RNA molecule. It involves synthesizing a complementary strand of mRNA from a DNA template. This mRNA is then used as a template to direct the production of sequence of amino acids, which determines the protein. Transcription occurs in the nucleus of eukaryotes while it occurs in the cytoplasm of prokaryotes. Translation occurs in the cytoplasm of both prokaryotes and eukaryotes.
Answer:
The ability of sequences within the leader mRNA to pair with one another and form stem-lopp structures
Explanation:
A form of feedback regulation controls the trp operon by regulating transcription termination, a mechanism referred to as Attenuation.
-In the presence of high concentrations of tryptophan, RNA polymerase ceases transcription shortly after initiation in a region called the leader sequence.
-If the concentration of tryptophan is low, transcription does not terminate until the entire operon is transcribed. The mechanism of attenuation links alternative RNA secondary structures to transcription termination.
-Immediately after transcription, RNA from the leader region folds into one of two alternative secondary structures.
-One of these structures is a transcription termination signal that stops RNA polymerase from continuing to the end of the operon.
-The alternative structure does not contain a transcription termination signal and allows transcription of a single mRNA that encodes all the structural genes.
-The decision as to which of the two alternative RNA structures formed is regulated by the concentration of tryptophan.
They have uncoiled to form long, thin strands.
Interphase is made up of G1, S, and G2 phases where S is the synthesis phase and G2 prepares the cell for mitosis/meiosis.
