HESI A2 2024 BIOLOGY SECTION EXAM QUESTIONS

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HESI A2 2024 BIOLOGY SECTION EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -100 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Plant cells converts the suns light energy and uses it in the process of

Answer:

Photosynthesis

Question 2: Biology is

Answer:

The study of life and all living things (organisms)

Question 3: amount needed to increase temp is

Answer:

• gram of water by 1 Celsius degree is called a Calorie

Question 4: Catabolism

Answer:

Metabolic pathways that break down molecules, releasing energy.

Question 5: Things that dissolve in water are

Answer:

Solutes and polar

Question 6: What do other cells use to convert energy via both

Answer:

Aeróbic and anaerobic respiration Question 7: What are the four classes of organic compounds that are central to life on earth

Answer:

carbohydrates, lipids, proteins, nucleic acids

Question 8: What elements make up 96% of the mass of all organisms ?

Answer:

(C) Carbon , (H) hydrogen , (O) oxygen and (N) nitrogen

Question 9: All living things are made of

Answer:

cells originated from a pre existing cell. Smallest unit of living things . Needed for survival

Question 10: A solution is a

Answer:

Solute plus a solvent

Question 11: Order of more acidic ph from distilled water - 14

Answer:

• Water 7.5 blood 8seawater 9laundry bleach 11 ammonia 12. 13 oven cleaner 14 drain cleaner

Question 12: Water is a ____molecule and why

Answer:

Polar . Because it has a partial positive charge on one side and oxygen atom exhibits a partial negative charge on the other

Question 13: Every amino acid has four important parts around the central carbons an

Answer:

Amino group (-NH2) , a carboxly group (-COOH). A hydrogen (in most amino acids and an R group .

Question 14: Organism

Answer:

Living things that can sense and react to stimuli ( change, stress, or disruption) reproduction (duplicate) , grow and develop , essentially evolve, transform (utilize and convert ) energy and maintain internal balance (homeostasis)

Question 15: Order of more acidic ph from distilled water - 0

Answer:

• Water 6.
• Black coffee
• Beer
• Vinegar
• Cola
• Lemon
• Stomach acid 0z concentrated nitric acid

Question 16: Why do nurses need to know about elements ?

Answer:

Because we will be monitoring and replacing certain elements for the pt via IV oral or parenterally (around the gut ) and normal levels can cause stress in cells -> tissues -> organs -> body

Question 17: Water is an _____ molecule

Answer:

inorganic because it contains carbon

Question 18: active transport

Answer:

the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

Question 19: DNA instructions (genes)

Answer:

Proteins and fluids

Question 20: Cell division or reproduction

Answer:

Mitosis ( occurs in all cells except sperm and egg) and meiosis (sperm and egg )

Question 21: Humans are made of trillion of cells called

Answer:

Multicellular

Question 22: Within the cells are very talented task oriented

Answer:

organelles and electric charges both positive and negative

Question 23: Nurses need to know biology at what level and why

Answer:

Basic biology and a cellular level to regonise a change of problem and then implement a strategy to fix it.

Question 24: amino acids

Answer:

Are organic molecules that serve as building blocks of proteins . They contain carbon , hydrogen, oxygen and nitrogen atoms. There are 22 different amino acids found in proteins

Question 25: Feed back examples

Answer:

Body temp , BP control. , HR regulation , platelet aggregation, fight or flight

Question 26: DNA is not a problem unless

Answer:

the gene is expressed and the error is caused a change in the tener product (rna or protein )