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Anatomy and Physiology – Midterm Test – Complete Solutions – Exam Questions and Answers

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This document contains a midterm test for anatomy and physiology with complete solutions provided for each question. It covers core topics such as human body systems, cellular structure, tissues, organs, and key physiological processes. The material is designed to support exam preparation, self-assessment, and revision for students in nursing, biology, and health sciences programs.

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Anatomy and Physiology Midterm Test
✅✅-Define anatomy
study of structure and shape of body and its parts -

study of how body and parts work or function - ✅✅-Define physiology


✅✅
atom, molecule, macromolecule, cell, tissue, organ, organ system,
organism - -What are the levels of organization from atom to
organism?

- nucleus (p + n), electrons orbit

✅✅
-p+n
-p- -What is the structure of an atom? What does atomic mass
represent? What does atomic number represent?


✅✅
can form 4 covalent bonds - bond to self to form long chains, single,
double, triple - -What makes carbon so important in organic
molecules?


✅✅
NHCOPS - nitrogen, hydrogen, carbon, oxygen, phosphorus, sulfur -
-What are the 6 most common elements in the human body?

- ionic - attraction between ions (charged), 1 atom electron doesn't always
be the electron gained
- covalent - share valence electrons, can form single/double/triple bonds
- hydrogen - attraction between polar molecules, weak bonds, holds DNA

✅✅
and other molecules together, stabilize proteins, also known as electrostatic
bonds - -What are the 3 major types of bonds and their differences?
Be able to illustrate and explain examples of all 3.

- charged particle, formed as result of ionic bonding
- form from 1 atom gives up electron to air and 1 atom attracts an electron
from the air (not necessarily the same electron)

✅✅
- cation
- anion - -What is an ion? How do they form? What is the term that
refers to a positive ion? A negative ion?

- variants of an element which has different number of neutrons
- subtract atomic mass and atomic number/protons

✅✅
- used in nuclear medicine to target cancer cells and in imaging studies -
-What is an isotope? How do you determine the number of neutrons
in an isotope? What are some uses of isotopes in medicine?

acidity or alkalinity/base of a substance - ✅✅-What does pH measure?
- releases H+ ions in water, high concentration of H+ ions
- 0-6

,- sour, react with metals - ✅✅
-Explain acids in terms of H+ concentration.
What are their pH ranges? What are characteristics of acids?

- attracts H+ ions when placed in water, low concentration of H+ ions

✅✅
- 8-14
- bitter, slippery in feel (soap) - -Explain bases in terms of H+
concentration. What are their pH ranges? What are characteristics of
bases?


✅✅
load/unload H+ ions to keep pH balance and to prevent pH swings -
-What is the function of buffers?

lipids, proteins, carbohydrates, nucleic acids - ✅✅-What are the 4 major
macromolecules?

- energy storage (very rich, 2 times the energy then carbohydrates),
cushion organs, insulates body (such as whale blubber)
- carbon, hydrogen, and few oxygen which creates long hydrocarbon
chains (glycerol and fatty acid (long hydrocarbon "tail" with COOH group at
the "head") chains through dehydration synthesis)
- triglyceride (fat of 3 fatty acids link to glycerol), saturated fat (bonded C to
H w/ no C=C double bonds), unsaturated fat (C=C double bonds in fatty
acid), plant and fish fats, vegetable oils, phospholipids (glycerol, 2 fatty

✅✅
acids - 1 saturated and unsaturated, phosphate group), steroids (4 fused
carbon rings), cholestrol and sex hormones - -What is the function of
lipids and components (building blocks/subunits or monomers)? Give
examples of the monomers and polymers it forms.

- convert to usable energy, energy storage (2K calories), structural material
(for balancing water level in plants)
- carbon, hydrogen, oxygen (1:2:1), monomer - monosaccharides,

✅✅
polymers - polysaccharides
- glucose, sucrose, starch, glycogen, cellulose - -What is the function
of carbohydrates and components (building blocks/subunits or monomers)?
Give examples of the monomers and polymers it forms.

- involved in almost everything - enzymes (lower activation energy),
structure (keratin, collagen), carries and transports (membrane channels),
receptors and binding (defense, antibodies), contraction (actin and myosin),
signalling (hormones)
- monomer - amino acids (20) [carbon, amino group, carboxyl group (acid),
R group (side chain - variable group creates unique chemical properties of
the amino acid)], polymers - polypeptides; proteins can be 1 or more
polypeptide chains folded and bonded together; large and complex
molecules give it a 3d shape

, ✅✅
-egg, jello, meat - -What is the function of proteins and components
(building blocks/subunits or monomers)? Give examples of the monomers
and polymers it forms.

- store and transmit hereditary information (egg/sperm, making proteins)
- nucleotides [3 part - nitrogen base {purines - Adenine (A), Guanine (G) -
single ringed; pyrimidines - Cytosine (C), Thymine (T - DNA), Uracil (U -
RNA) - double ringed)} , pentose sugar (5 carbon - ribose in RNA and

✅✅
deoxyribose in DNA, phosphate group (PO4 group)]
- RNA and DNA - -What is the function of nucleic acids and
components (building blocks/subunits or monomers)? Give examples of the
monomers and polymers it forms.

- water attracts to itself
- water attracts to anything charged
- most important - uneven sharing valence electrons, partial negative
charge near oxygen atom + 2 partial positive charge near hydrogen atom
- large amount of heat to change from liquid to gas, evaporating off skin to
cool
- polar makes good solvent for ionic and polar substances, hydrophilic
attracts to water, water molecules separate ionic bonds since surround by
H2O, essential for body - medium for metabolic process, allow dissolved

✅✅
reactants to collide and form products, dissolve waste products to be flush
out as urine - -Explain the properties of water, including cohesion,
adhesion, polarity, heat of vaporization and solvent properties?


✅✅
small, simple - no membrane bound organelles, no nucleus, bacteria -
-Characteristics of prokaryote


✅✅
larger, complex - membrane bound organelles, nucleus,
plants/animals/fungi/protista - -Characteristics of eukaryote


✅✅
DNA, cytoplasm, cell membrane, contains ribosomes/cytoplasm/DNA/cell
membrane as organelles - -Characteristics of eukaryote and
prokaryote

- membrane compose of protein and lipid molecules
- outside layer of cell
- protects cell, regulate passage of material in and out of cell, act as a

✅✅
selective permeable membrane, allow cells to receive/transmit signals -
-What is the structure, location and function of plasma/cell
membrane?

- network of protein filaments (microfilaments and microtubules)
- in cytoplasm along cell membrane

, ✅✅
- provide shape and internal organization (protein filaments), movement -
-What is the structure, location and function of cytoskeleton?

- membrane enclosed
- in eukaryotic cells, central region of cell
- control center of cell - contains code to turn on/off genes, contain DNA

✅✅
and code instructions for making proteins and other molecules -
-What is the structure, location and function of nucleus?

- dense, nonmembranous body composed of protein and RNA

✅✅
- in nucleus/nuclei
- where ribosome assembly begins - -What is the structure, location
and function of nucleolus?

- internal membrane system - interconnected membrane bounded sacs and
canals, cylindrical
- evenly distributed in cytoplasm

✅✅
- collections of enzymes that perform tasks - synthesis of membrane (lipids)
and detox of drugs - -What is the structure, location and function of
smooth endoplasmic reticulum?

- internal membrane system - interconnected membrane bunded sacs
(vesicles) and canals, has ribosomes
- in cytoplasm close to nucleus and golgi

✅✅
- involved in protein synthesis, transports molecules from 1 cell part to
other - -What is the structure, location and function of rough
endoplasmic reticulum?

- stack of closely flattened spaced membranes sacs (like pancakes)
- near rough ER and nucleus

✅✅
- modify, sort and package proteins and other material from ER for storage
in cell/secretion outside cell ships proteins to final spot - -What is the
structure, location and function of golgi?

- small membranous sacs
- in cytoplasm
- full of digestive enzymes, break down lipids and carbohydrates and

✅✅
proteins to small molecules used by cell, breakdown organelles outlived
their usefulness - -What is the structure, location and function of
lysosomes?

- small particles of RNA and protein molecules
- attach to rough ER or in cytoplasm

✅✅
- form proteins - make and assembles on them through following mRNA
from nucleus - -What is the structure, location and function of
ribosomes?

Información del documento

Subido en
28 de abril de 2026
Número de páginas
31
Escrito en
2025/2026
Tipo
Examen
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