Answer:
During the process of translation, the codon UAC sets up the open reading frame in the mRNA (messenger Ribonucleic acid). The codon UAC corresponds to ATG in the DNA. It codes for the amino acid methionine.
Explanation:
The determination of the open reading frame is important in the process of translation and protein formation. The start and stop codons determine the open reading frame. In DNA (deoxyribonucleic Acid), there are typically six reading frames. The correct frame is determined and the translation is started.
The ATG codon in the DNA sets the reading frame in most of the eukaryotes. Different frames can be started by beginning with either 'A', 'T', or 'G'.
Answer:
no
Explanation:
you have DNA in your cells its all one thing together but not the same i believe
<span> Many cells have specialized shapes that help accomplish the task of absorbing, excreting large amounts of materials. One important factor cell design for exchanging materials efficiently is to have a relatively large surface area compared to the volume of the cell. An intestinal epithelial cell, for example. Instead of being a large round blob, it is long and stretched out to have a large surface area where absorption and excretion can occur. I hope this helps.</span>
Answer:
C. tetanic contractions might occur, which would stop the heart's pumping action.
Explanation:
The absolute refractory period of the cardiac muscle action potential refers to the time interval when the voltage gated sodium channels are inactivated. The absolute refractory period lasts ~180 msec. The action potential lasts 200-220 msec.
The refractory period of cardiac muscle is dramatically longer than that of skeletal muscle. This prevents tetanus from occurring and ensures that each contraction is followed by enough time to allow the heart chamber to refill with blood before the next contraction.
In order words, It is important for the cardiac muscle cells to have a longer refractory period, because if they were short like the skeletal muscles, the heart could enter tetanic contraction/summation which is when muscle is stimulated so rapidly that it does not have a chance to relax at all between stimuli.
Q1. The main difference between flagella and pili in a prokaryotic cell is their length. Flagella are long and thin, whip-like appendages that extend from the interior of the prokaryotic cell. There are much fewer flagella than pili on the prokaryotic cell. Pili are short and hallow, hair-like appendages from the surface of the cell. They do not extend from the interior of the cell.
Flagella are made of protein flagellin while pili are made of protein pilin.
Flagella can be found in both Gram+ and Gram- bacteria while pili can be found only in Gram- bacteria.
A function of flagella is motility. Pili can perform motility but are rather responsible for attachment and genetic exchange.
Q2. Photoautotrophic organisms contain pigments that help them absorb the light of certain wavelength so they can make their own food (because they are autotrophs) in the process of photosynthesis. There are different types of pigments and it is hard to say if they are similar to chlorophyll or not. Because they do the same function, but also they differ in chemical composition.