<span>cytoskeleton is composed of globular proteins placed in a way similar to chains, ou queues. they are only few types of these globular proteins, and they dispose following precise patterns. actin and tubulin are made of actin subunits and a- and b-tubulin alternating subunits respectively.
antibodies are proteins too. they are composed by two regions. one is common to all antibodies, one is specific for interaction with a substrate through a mechanism of the kind key-and-lock.
to locate where actin and tubulin are in a cell, you can simply construct specific antibodies. you just have to keep the common part of the antibody and bind to it a chromophore (a molecule capadble of emitting fluorescence if irradiated with light at a specific wavelenght). then you have to bind to this part a suitable "lock" for actin or tubulin. you can only do this if you know the structure of actin and tubulin and their phisical properties, which can determine what kind of interactions they can establish with precise molecules.</span>
Answer:
respiration
Explanation:
the production of ATP requires O2. and by respiration, the O2 is provided.
Answer:
An enzyme helps catalyze a reaction by decreasing the free energy of the transition state. As a result, more product will be made because more molecules will have the energy necessary for the reaction to occur and the reaction will occur at a faster rate.
Explanation:
Answer:
The correct answer will be option-E
Explanation:
Hershey and Chase's experiment was performed to test whether DNA serves as the genetic material or protein.
To perform experiment they grew bacteriophage into radiolabeled phosphorus and sulfur compounds. The phosphorus is an integral part of the structure of DNA whereas proteins contain sulfur in their structure.
In the given condition if radiolabeled nitrogen is utilized then the experiment will fail as the structure of proteins also contains an amino group( NH₂) in their structure as well as DNA. The scientist will not be able to identify whether the DNA is the genetic material or protein.
Thus, option-E is the correct answer.
Answer:
An adaptation can be viewed as a trait that emerged and developed for a certain condition so as to increases the organism changes of survival or fitness.
For a trait to be called adaptive, it must have had a positive influence but not majorly a trait that develops in reaction to a certain selection pressure.
Categorically, a trait is seen as adaptation if it is the aftermath of selection, and adaptive if it is of favourable influence at the existing time.