Answer:
3 would have purple petals, 1 would have white
Explanation:
To prevent cells from either shrinking or swelling you should keep them in an isotonic solution. Isotonic solution is a solution with equal amount of solute and solvent. Therefore, when cells are placed in such a solution they will not lose or gain water, as opposed to hypertonic (more solute than solvent) and hypotonic (more solvent than solute) solutions.
Answer:
Regarding translation the following statements is <u>false</u>: The mRNA strand is read from 3' to 5' direction during translation.
Explanation:
The <em>primary structures</em> for protein synthesis are the ribosomes, organelles composed by the <em>association of proteins with rRNA and tRNA</em>. During translation, mRNAs are read in the 5´ to 3´ direction, and tRNA transfer amino acids to build the polypeptide chain. The <em>protein is synthesized</em> from the amino terminus<em> to </em>the carboxy terminus. Each amino acid is <em>specified by a </em>codon formed by three bases in the mRNA. mARNs have a<em> </em>start and end codon that tells the ribosome where to start and stop adding amino acids. When the ribosome reaches the end codon, it means that protein synthesis is finished.
Answer:
Six hours
Explanation:
Given that;
A microbiologist inoculates a flask of broth with 1 ml of 100 bacterial cells/ml
Also, the generation time of the species is 1 hour and there is no lag phase
i.e there is no period where the individual bacteria are maturing, this will enhance a faster replication
So , since the generation time is 1 hour and we are being given 100 bacterial cells/ml
∴
After 1 hour = replication of the bacterial cells would have been doubled to =200 bacterial cells
2nd hour = 400 bacterial cells
3rd hour = 800 bacterial cells
4th hour = 1600 bacterial cells
5th hour = 3200 bacterial cells
6th hour = 6400 bacterial cells
∴ We can see that at the 6th hour, the culture has contained more than 6,000 cells/ml
Answer:
Because it takes some time to adapt to the new level of light in the environment
Explanation:
- The pupil of our eye functions to control the light that enters our eye by contracting or relaxing.
- When we are in bright place, the pupil contracts to limit the light in our eye lens.
- When we move to a dark room, the pupil takes some time to expand and due to this only limited amount of light enters our eye lens which might not be enough to see properly in the dark place.
- Unlike human beings some animals have more effective pupil with which they can stalk their prey in low light too.
