Exam 1 Questions & Answers 2024
What type of bond attracts one water molecule to another? - ANSWER-A Hydrogen Bond
When a woman is giving birth, the head of the baby pushes against her cervix and stimulates the release
of the hormone oxytocin. Oxytocin travels in the blood and stimulates the uterus to contract. Labor
contractions become more and more intense until the baby is expelled. This is an example of
__________. - ANSWER-Positive Feedback
Which of the following gives a cell structural support, determines the shape of a cell, and directs the
movement of substances through a cell? - ANSWER-The Cytoskeleton
__________ differ from one another in their number of neutrons and atomic mass - ANSWER-Isotopes
The sternum (breastbone) is __________ to the vertebral column. - ANSWER-Anterior
Three common components of a feedback loop are _________, __________, and __________. -
ANSWER-receptor, integrating (control) center, effector
Which of these is an example of active transport? - ANSWER-Transport of Na+ from a place of low
concentration to a place of higher concentration
A red blood cell is placed in a hypertonic solution. This means the concentration of solutes in the
solution is __________ than the concentration of solutes in the intracellular fluid, and will cause the cell
to ______________. - ANSWER-higher, shrink
Chemicals in a solution can move down a concentration gradient. This means the chemical will move
from the area of __________ concentration to the area of _________ concentration. - ANSWER-high,
low
, During exercise, one generates excess heat and the body temperature rises. As a response, blood vessels
dilate in the skin, warm blood flows closer to the body surface, and heat is lost. This is an example of
__________. - ANSWER-Negative Feedback
What function would immediately cease if the ribosomes of a cell were destroyed? - ANSWER-Protein
Synthesis
The study of how the body functions is called __________. - ANSWER-physiology
The plasma membrane is mostly made of molecules that have hydrophilic heads and hydrophobic tails.
These molecules are called _________. - ANSWER-Phospholipids
A surgeon needs to be familiar with different versions of anatomy. This is because of the phenomenon of
_____. - ANSWER-Anatomical Variation
Cytokinesis overlaps with which phase of mitosis? - ANSWER-Telophase
Sodium has an atomic number of 11 and an atomic mass of 23. Sodium has __________. - ANSWER-12
neutrons and 11 protons
The fluid outside of a cell is called __________. - ANSWER-extracellular fluid
The term _____________ refers to a membrane that allows some things to pass through it, but not
others - ANSWER-Selectively permeable
Metabolism is the sum of all __________ __________ change. - ANSWER-Internal, chemical
Cells undergo division when which of the following conditions have been met? - ANSWER-They have
grown large enough and replicated their DNA
T/F The frontal plane passes vertically through the body or an organ and divides it into equal right and
left portions - ANSWER-False