WELCOME TO THIS GREAT EDUCATIONAL BLOG

Welcome to my Pre-Nursing Exam Prep blog. I hope it will help you prepare very well for the Pre-NLN entrance exam, popularly known as the PAX exam. This is one of the entrance exams required by some schools for those who want to pursue careers in the nursing field in the USA. I will attempt to break down the review materials into manageable parts so that you can systematically and efficiently prepare for the test with less stress. I will guide you to prepare for the entire content of the test. Hopefully, you will be able to pass after going through these series.


BEST OF LUCK!


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A 12-DAY APPROACH TO ACE THE EXAM

SCIENCE REVIEWThe topics that are generally covered in the test have been grouped into twelve instructional modules below. You will be tested only on the basic concepts of physics, chemistry and biology. Click on science topics and select any of the topics listed in the module to review.

Lesson 1:

Basic structure of atom

Types of tissues

Lesson 2:

Movement of substances across the cell membrane

Acids and bases, pH scale

Carbohydrates, proteins, lipids and nucleic acids

Lesson 3:

Basic structure of the eye

Basic structure of the ear

Nervous system

Lesson 4:

Circulatory system

Introduction to mechanics (motion/forces)

Electrical circuits

Lesson 5:

Balancing chemical equations and writing formulas

Essentials of photosynthesis and respiration

Classifying organic compounds

Magnetism

Electromagnetism

Lesson 6:

Interpretation of graphs and pictograms

Analyzing and making conclusions from experiments

Data analysis

Lesson 7:

Endocrine system

Digestive system

Genitourinary system

Lesson 8:

Reproduction in mammals

Basic parts of a flower

Reproduction in plants (the process of pollination

Genetics

Lesson 9:

Modes of heat transfer

Calculating heat energies and phase diagrams

Temperature conversions (Kelvin, Celsius, Fahrenheit)

Lesson 10:

Gas laws (Boyle, Charles, Gay-Lussac)

Types of energy (Potential, kinetic, etc…..)

Chemical bonds, equilibrium and equilibrium constants

Mixtures, types of solutions, solubility

Lesson 11:

Concepts of the food pyramid, food web and food chain

Light (diffraction, refraction, reflection, dispersion)

Basic concepts on waves

Sound waves

Catalyst and enzymes

Lesson 12:

Symbiosis

Ecology

The Electroscope

Radioactivity and half-life Tropism

Tropism

Sunday, March 28, 2021

TYPES OF JOINTS

Joints occur at regions where two bones meet. They are classified as

  • Immovable joints: Also known as fixed joints.  There is relatively no movement between the bones. There is no cartilage between the joints. Examples: Bones of the cranium and facial bones that articulate with the teeth
  • Movable joints: Also known as synovial joints. The bones of this joints are capable of movements. The bones are separated by cartilage called articular cartilage. The movement may be partial or freely moveable.
  • Partially moveable joints: Very limited range of movement.            Example: The joint between the vertebrae; The joints of the cranium; The joints of the hip bones.
  • Freely moveable joints: There are free movements between the articulating bones. The articular surfaces are covered with cartilage. This articular cartilage reduces the friction between the two surfaces of bones making the joint. It is covered by a synovial membrane which forms a closed sac. This sac contains a fluid called synovial fluid. The synovial fluid helps in lubricating the joint to reduce friction. 
Types of freely moveable joints 

Classification is based on the degree of movement that they allow. 

  • Hinge joints: These joints allow the backward and forward movement in only one plane. Examples: Elbow and knee joints
  • Ball and Socket joints: These joints allow movements in multiple planes. Examples: Shoulder and hip joints
  • Pivot joints:  Only rotational movements are possible in these joints. Examples: The joint between the first and second cervical (neck) bones.

 

Thursday, March 25, 2021

ANALYSIS OF DATA TYPE OF QUESTIONS

 In the given hypothetical reaction: A+BAB, the reactants A and B are consumed while the concentration of product AB increases.  The reaction rate can be determined by measuring how fast the concentration of A or B decreases, or by how fast the concentration of AB increases.  The graph below shows a reaction profile in which the reactants (red) decrease in concentration as the products increase in concentration (blue).


RateWiki (1).jpg

Answer the following questions based on the information above.

1. At what time is the reaction in equilibrium?
    A. 6 s
    B. 10 s
    C. 8 s
    D. 9 s

2. What is the concentration of the product at equilibrium?
    A. 0.3 M
    B. 0.4 M
    C. 0.45 M
    D. 0.5 M

3. During which time interval is the rate of the forward reaction greater than the rate of reverse reaction?
    A. 0-9 s
    B. 9-10 s
    C. 10-15 s
    D. 15-25 s

4. During which time interval is the rate of the reverse reaction greater than the rate of the forward  reaction?
    A. 0-9 s
    B. 9-25 s
    C. 5-9 s
    D. 0-5 s

5. What is the concentration of the product at the beginning of the reaction?
    A. 1.0 M
    B. 0 M
    C. 1.15 M
    D. 0.5 M

6. What is the concentration of the reactants at the beginning of the reaction?
    A. 1.0 M
    B. 0 M
    C. 1.15 M
    D. 0.5 M


ANWSERS
1. D          2. C           3. A         4. B           5. B          6. C

Monday, February 8, 2021

ECOLOGICAL TERMS WORTH KNOWING

 TERMS USED IN ECOLOGY

abiotic

nonliving parts of the environment

autotroph

an organism that produces its own food; the source of energy for all other living things on earth

biodiversity

the variety of species in an area

biosphere

all of Earth's ecosystems, collectively; the biologically inhabited portions of Earth, including all of the water, land, and air in which organisms survive

biotic

the living parts of the environment

carnivore

an organism that survives by eating animals

carrying capacity

the largest population of any single species that an area can support

community

a combination of all the different populations that live and interact in the same environment

competition

the struggle between organisms for the same limited resources in a particular area

consumer

an organism that obtains its energy from producers

decomposer

an organism, generally a bacterium or fungus, that consumes (eats) dead organisms and organic waste

ecology

the study of how living things interact with one another and with their environment

ecological niche

the specific role played by an organism or a population of organisms in the ecosystem

ecological succession

the process by which an existing community is replaced by another community

ecosystem

all the living and nonliving things that interact in a specific area; a subdivision of the environment

energy pyramid

a diagram showing how food energy moves through the ecosystem

environment

every living and nonliving thing that surrounds an organism

food chain

a representation that identifies the specific feeding relationships among organisms

food web

a representation of many interconnected food chains that shows the feeding relationships among producers, consumers, and decomposers

habitat

the place where an animal or plant lives

herbivore

an organism that eats only plants

heterotroph

an organism that cannot make its own food; consumers

host

the organism in a parasitic relationship that provides a home and/or food for the parasite

limiting factors

any factor in the environment that limits the size of a population

parasite

an organism that survives by living and feeding on other organisms

population

all the individuals of a single species that live in a specific area

predator

an animal that hunts and kills other animals for food

prey

an animal that is hunted and killed by predators

producer

an organism that makes its own food from light energy and inorganic materials

scavenger

a carnivore that feeds on the bodies of dead organisms

biome

a climax community of plants and animals that covers a large geographic region

saprophytes

organisms that feed on dead and decaying organisms, includes heterotrophic plants, bacteria, and fungi

omnivores

animals that feed on both plants and animals

climax community

final stable stage in an ecological succession

energy flow

the movement of energy through an ecosystem

Friday, January 22, 2021

NURSING ENTRANCE EXAM ONLINE COURSE

 If you are looking for a good online course for nursing entrance exams, I recommend the Smart Edition Academy. They have video lessons and many full length practice test for TEAS, Hesi and the Kaplan Tests. You can check them out! Here is the link: 

https://www.smarteditionacademy.com/ref/19/