# Tutor profile: Vincent V.

## Questions

### Subject: Psychology

In the biopsychosocial model, why is it important to understand the social aspect of a person when utilizing this model in psychology?

Humans beings are naturally social creatures that are highly influenced by numerous social factors that have a direct effect on who they are. In order to truly understand an individuals well being it is important to understand the following: Culture, socioeconomic status, family norms, and social supports. Culture may explain thoughts, actions, norms, characteristics and behavior of a person. For example, eye contact in some cultures can be extremely offensive and in others it can be a sign of respect and attention. Culture can create family norms that may not seem "normal" in other cultures. Understanding the differences and where family norms originate are important for the overall holistic perspective of this model. Socioeconomic status can have an effect on an individual's ability to obtain enough resources, education, health care etc. This may determine someone's psychological/biological development, resilience, support, and trauma.

### Subject: Biology

What cell is responsible for myelinating the axons on the nerve cells in the Central Nervous System (CNS)?

When it comes to cells myelination, there are two types of cells that are responsible for myelinating the axon of nerve cell and they are: Oligodendrocytes and Shwann cells. The major difference in both of these cells is what part of the nervous system it myelinates. The Shwann cells myelinate the axons in the Peripheral Nervous System (PNS) and the Oligodendrocyte myelinates the axons in the Central Nervous System (CNS). Thus, the answer to the question would be Oligodendrocyte.

### Subject: Algebra

If y = 2x + 4 and x = 8, what is the value of 4y - 2? A. 68 B. 77 C. 78 D. 100

The first thing that we need to do is figure out what exactly the question is asking. So, let's write down what we have. Ultimately, we want to know what 4y - 2 so it will have a star next to it. y = 2x + 4 x = 8 *4y - 2 Let's start by looking at the first equation y = 2x +4 and see if we can solve it with the information the question gave us. In order to solve for "y" we need to know what the value of "x" is. The question tells us that the value of "x" is 8. We can plug 8 in for "x" and solve the equation: y = 2(8) +4 *Remember, we need to follow the order of operations in order to get the correct answer.* There are many acronyms for the order of operations so lets refresh our minds to what the order of operations are: Parenthesis, Exponents, Multiplication, Division, Addition and Subtraction. The order of operations tells us that we need to multiply before we can add anything. So lets multiply 2 x 8. This will give us 16. y = 16 + 4 We now can add the 16 and the 4 to get 20. y = 20 Now that we found the value of "y" we can solve our last equation that will give us the answer to the question. The last part of the questions ask us to find the value of 4y - 2. In order to solve this equation we will need to know the value of "y". We found the value of "y" to be 20 in our first equation we solved. Therefore, we can plug 20 in for "y" and solve. 4(20) - 2 Keeping the order of operations in mind, we will multiply 4 x 20 to get 80. We then can subtract 2 from 80 to get our answer of 78. 80 - 2 = 78 Thus our answer choice would be C.