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HESI A2 Biology Study Guide 2025 – Complete Exam Review

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HESI A2 Biology Study Guide 2025 – Complete Exam Review

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Hesi A2
Course
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Institution
Hesi A2
Course
Hesi A2

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Uploaded on
December 20, 2025
Number of pages
9
Written in
2025/2026
Type
Exam (elaborations)
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Terms in this set (108)


Alleles Alternative versions for a gene

simple organic compound containing both a carboxyl (—COOH)
Amino Acids and an amino (—NH2) group. They are bonded together by a
peptide bond and are the building blocks of proteins.




Chromosomes start to SEPARATE.
"Chromotids" seperate chromosomes
Anaphase



Asexual Reproduction (Mitosis) Produces 2 daughter cells. "Everything stays the same"

ATP is able to power cellular ATP + H2O → ADP + Pi + Energy
work by undergoing a certain
reaction. Which of these chemical
equations best represents this
reaction?

Autocrine The hormone which acts on the same cell that produced

Autotrophs is an organism that can feed itself i.e. produces its own food.

In this process, the chromosome binds to the cell membrane,
Binary Fission where it replicates. The as the cell grows, it pinches in two,
producing two identical cells.

Are found attached to the endoplasmic
reticulum (ER)
Bound ribosomes



The breaking of the terminal 7.3 K calories
phosphate of the ATP molecule
releases about how many K
calories of energy?

Long chains, or polymers of sugar. Most importantly form the
Carbohydrates
backbone of DNA and RNA.

Cell Fundamental unit of biology

Cellular Respiration Formula C6H12O2 + 6O2 ------> 6CO2 + 6H20 + Energy (ATP)

Contains all the DNA material necessary for the regeneration of
the cell, as well as all instructions for the function of the cell. Every
Chromosomes
organism has a characteristic number of chromosomes specific to
the particular species.

, Paramecium, Vorticella and Stentor exhibit their locomotion with
Cilia
the help of ___________.

Codon Every group of three bases along the stretch of RNA

This step is technically separate from mitosis, and occurs when the
Cytokenesis
cell pinches in two, forming two separate identical cells.

Cytokinesis occurs late in the process
of mitosis and is marked by a single cell
Cytokinesis
splitting into two daughter cells.



The division of cytoplasm is known as cytokinesis. This stage
Cytokinesis is begins when the mitosis is near completion and results in the
formation of two daughter cells.

2 diploid daughter cells from mitosis

Cytokinesis (Mitosis)



The cytosol is the fluid in which
organelles of the cell reside. This is
Cytosol often confused with cytoplasm, which is
the space between the nucleus and the
plasma membrane.

animals which feed on detritus (organic debris from decomposing
Detritivores
plants and animals) Earthworm is a common detritus feeder.

DNA replication is called each helix that is created contains one strand from the helix from
semiconservative because which it was copied

During cellular respiration, NAD+ a carrier of hydrogen atoms and electrons..
serves as NAD+-----NADH

Attached to the nucleur membrane and
consists of two continuous parts.
Endoplasmic reticulum



Epistasis is the interaction between two
alleles which have different effects in
Epistasis
combination than individually.



Membrane-enclosed nucleus and series of membrane-bound
Eukaryotic Cells organelles that carry out the functions of the cell as directed by
the genetic information contained in the nucleus.

Those hormones which secrete their essential product by way of a
Exocrine action duct to some environment external to itself, either inside the body
or on a surface of the body

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