Anatomy & Physiology Test Bank Chapter 3 EXAM LATEST 2023- 2024 ACTUAL EXAM 150+ QUESTIONS AND CORRECT ANSWERS/ALREADY GRADED A+

Anatomy & Physiology
Test Bank Chapter 3
EXAM LATEST 2023-
2024 ACTUAL EXAM
150+ QUESTIONS AND
CORRECT
ANSWERS/ALREADY
GRADED A+
1) About how many cells
constitute the body of an adult?
A) 50 to 100 million
B) 50 to 100 billion
C) 50 to 100 trillion
D) 50 to 100 quadrillion -
ANSWER-C
2) The body is made up of many
different cell types, from small
circular red blood cells to the
elongated smooth muscle cells
20X its size. Why is there such
variation in size and shape?
A) Different cell sizes are due to
nutritional differences.
B) Different variations in size
and shape allow differentiated
cell types to perform unique
functions.
C) Variations in cell shape and
size are due to chromosomal
differences between cells.
D) Cell size and shape does not
vary among cell types. -
ANSWER-B
3) The three major parts of a
cell are
A) the endoplasmic reticulum,
Golgi apparatus, and vesicles.
B) the nucleus, nucleolus, and
nuclear envelope.
C) microtubules, ribosomes, and
centrosomes.
D) the nucleus, cytoplasm, and
cell membrane. - ANSWER-D
4) A cell is surrounded by an
extremely thin, flexible
membrane. Why is the
membrane selectively
permeable?
A) It allows all substances to
pass through, making it easier
to absorb nutrients.
B) It allows all organic
substances to pass through, but
excludes all inorganic
substances that could be
harmful.
C) It allows some substances to
pass through and excludes
others based on size, polarity,
and other factors.
D) It does not allow any
substances to pass through as
they could damage the cell. -
ANSWER-C
5) Cell membranes are
described as a fluid mosaic that
maintains stability while still
allowing movement. What
component maintains most of
the flexibility of the membrane?
A) Phospholipid bilayer
B) Integral proteins
C) Polysaccharides
D) Carbohydrates - ANSWER-A
6) The major components of the
cell membrane are
A) lipids and carbohydrates.
B) proteins and carbohydrates.
C) lipids and proteins.
D) carbohydrates and
polysaccharides. - ANSWER-C
7) Which of the following
correctly describes the
structural organization of the
cell membrane?
A) A solid, rigid layer of
phospholipid with loosely
bound protein molecules
B) A bilayer of phospholipid
molecules in which protein
molecules are embedded and
can move
C) Rigid layers of protein
molecules in which
carbohydrate molecules are
suspended
D) Three layers; lipid on the
inside, protein in the middle,
and carbohydrates (and
polysaccharides) on the outside
- ANSWER-B
8) A protein that spans the cell
membrane is termed a(n)
A) receptor protein.
B) integral protein.
C) peripheral protein.
D) anchoring protein. -
ANSWER-B
9) Cellular adhesion molecules
are
A) peripheral proteins.
B) integral proteins.
C) lipids.
D) receptors. - ANSWER-A
10) When you scrape your skin,
white blood cells arrive to fight
infection. To slow down near
the site of the cut, they use
selectin, which provides
traction. Since selectin helps
white blood cells bind to a
surface, they are part of a
protein group known as
A) cellular adhesion molecules.
B) integral proteins.
C) cellular binding molecules.
D) receptors. - ANSWER-A