.png){kind=logo}
PDF Download
HESI A2 BIOLOGY (FOUND ON REDDIT) 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: Proteins
Answer:
They are Polymers of 20 molecules called Amino Acids. Enzymes are a type of protein, which catalyze different reactions or processes. Largest Biological Molecule
Question 2: Saturated fat
Answer:
Clogs arteries. No double bonds in their hydrocarbon tail. Solid at room temperature.
Question 3: Prokaryotic Cells
Answer:
Lack defined nucleus and do not contain membrane- bound organelles.
Question 4: Autotrophs
Answer:
is an organism that can feed itself i.e. produces its own food.
Question 5: Lycopods
Answer:
first plants that formed true leaves and roots.
Question 6: Binary Fission
Answer:
In this process, the chromosome binds to the cell membrane, where it replicates. The as the cell grows, it pinches in two, producing two identical cells.
Question 7: Omnivores
Answer:
Eat meat and plants
Question 8: Movement of a substance from High to Low?
Answer:
Active transport is the movement of molecules against their concentration gradient, such as when moving from low to high concentration.
Question 9: Virus
Answer:
Viruses can be composed of either DNA or RNA, but not both. If they are composed of RNA, they are called a retrovirus. Viruses are typically much smaller than bacteria Viruses are considered acellular because they do not have organelles or cytoplasm. All viruses are parasitic, as they depend on a host source to be able to reproduce
Question 10: Cytokinesis is
Answer:
The division of cytoplasm is known as cytokinesis. This stage begins when the mitosis is near completion and results in the formation of two daughter cells.
Question 11: Hydrogen and Helium
Answer:
The two most abundant elements in the chemical composition of the universe are:
Question 12: Sexual Reproduction (Meiosis)
Answer:
Produces 4 daughter cells 1/2 from mom 1/2 from Dad Begin as diploid end as haploid
Question 13: Heterotrophs
Answer:
is an organism that feeds on another organism i.e. cannot produce own food.
Question 14: Interphase (IPMAT)
Answer:
Chromosomes duplicate and cell prepares for division
Question 15: Scientific Method
Answer:
Observation Hypothesis Experiment Conclusion
Question 16: Isomers
Answer:
Galactose, D-glucose and fructose are examples of
Question 17: Stigma of a plant does what?
Answer:
The stigma collects pollen at pollination. Stigmas can either be long and thin or globe-shaped.
Question 18: Steps of Anaerobic Cellular Respiration
Answer:
Glycolysis and Fermentation
Question 19: Metabolism
Answer:
Sum of all chemical reactions that occur in an organism.
- High energy to low energy.
- All reactions are catabolyzed by enzymes
Question 20: Nucleus
Answer:
Contains DNA called Chromosomes.
Question 21: Function of the Stomach
Answer:
Digestion of nutrients
Question 22: Steps of Aerobic Cellular Respiration
Answer:
Glycolysis, Kreb's Cycle, Electron Chain Transport
Question 23: Free ribosomes
Answer:
Are found int he cytoplasm Question 24: Halophile archaebacteria only survive in which type of environment?
Answer:
Salt loving environment
Question 25: Rough ER
Answer:
Covered in ribosomes and is responsible for protein synthesis and membrane production.
Question 26: Mitochondria
Answer:
Found in Eukaryotic cells and are the site of cellular respiration
Question 27: During cellular respiration, NAD+ serves as
Answer:
a carrier of hydrogen atoms and electrons..
.png)