I think the correct answer from the choices listed above is option A. Both proteins and complex carbohydrates are polymers of smaller subunits. They <span>are substances whose molecules have high molar masses and are composed of a large number of repeating units.</span>
Answer:
There are many points at which eukaryotic gene expression can be controlled, through pretranscriptional control, transcriptional control, and posttranscriptional control
Explanation:
The pretranscriptional control determines the accessibility of chromatin to the transcription machinery. It is affected by supercoiling and methylation. It is also known as epigenetic regulation, and it does not depend on the sequence but on the conformation of the DNA.
While transcriptional control determines the frequency and / or speed of transcription initiation through the accessibility of the start sites, the availability of transcription factors and the effectiveness of promoters.
The post-transcriptional control is the one that is exercised once the transcript has finished synthesizing. It can be of several types:
• Maturation control: As the RNA adjustment can be made.
• Transport control: Most RNA has to go out to the cytoplasm to perform its function. For this they have to cross the pores of the nuclear membrane, where you can select the RNAs that will be transported and those that will not.
• Stability control: The half-life of RNA can be regulated by the expression of RNAs or mRNA stabilizing proteins in the cytoplasm.
• Translational control: It is exercised on the frequency with which the mRNAs begin to be translated. It can also affect the frequency with which proteins mature and the availability of enzymatic effectors.
Answer:
Figure A: active transport
A pond organism that is unicellular, contains membrane-bound organelles and possesses a flagellum is a PROTISTA. It is a unicellular kingdom.
The Protista kingdom is composed of eukaryotic single-celled unicellular organisms.
Flagellated protists are microorganisms having a tail-like projection known as flagellum.
The flagellum is a structure used for motion, thereby, in general, flagellated protists are found in moist environments (e.g., ponds, fresh-water, etc).
Learn more about the Protista kingdom here:
brainly.com/question/5186929
Homozygous traits are either a combination of the same two dominant alleles or the same two recessive alleles. A hybrid trait is also known as a heterozygous trait, and is the pairing of a dominant and recessive allele.
