Answer: 5%
Explanation:
The Prevalence rate is the term used to describe the percentage of a population that have contacted the disease being tested for. It is usually done over a certain period or a certain time.
The prevalence of TB in the screened community on January 1st therefore is;
= Number of infected/ No. of Tested residents
= 10/200
= 5%
Cytosine. This is because Guanine ALWAYS bonds with Cytosine in DNA
Answer:
Explanation:
First step
We can locate the problem and identifying it, there are tools to identify some computer problems or just we can use the logic.
Second step
Researching ways to solve the problem, we can find any solution on the internet, we can research in forums or technology platforms.
Third step
Trying a number of simple fixes initially, If we find different solutions, we can start to try with some of them.
Fourth step
Seeking help to solve the problem, if we could not resolve the problem, we can call technical service or any specialist.
Answer:
<em>B: The drug is a small charged molecule</em>
Explanation:
Substances can passively diffuse in and out of the cell via the cell membrane in two ways;
- Simple diffusion
- Facilitated diffusion
The cell membrane allows small molecules or ions to freely diffuse across it in response to concentration difference between the inner and outer parts of the cell membrane. This is known as simple diffusion.
In facilitated diffusion, special proteins in the cell membrane, known as channel/carrier proteins binds with molecules and facilitates their diffusion across the cell membrane by carrying them through special channels in the membrane.
Hence, to support the alternative hypothesis that the new drug will exhibit simple diffusion across the plasma membrane, the drug should be a small charged molecule.
<em>Correct option: B</em>
