What organelle is primarily responsible for producing ATP in eukaryotic cells?
The mitochondria
What gas is primarily exchanged in the alveoli of the lungs?
A. Oxygen and carbon dioxide
B. Nitrogen and argon
C. Oxygen and nitrogen
D. Carbon dioxide and hydrogen
A. Oxygen and carbon dioxide
What is defined as people who share similar physical characteristics?
A. Ethnicity
B. Race
C. Culture
D. Mores
B. Race
The heart
What element gives blood its red color when it binds with oxygen?
Iron
In the electromagnetic spectrum,_____.
A. infrared energy has the shortest wavelength
B. infrared radiation has more energy than red radiation
C. visible light provides the energy for photosynthesis
D. near-infrared radiation provides the energy for photosynthesis
C. Visible light provides the energy for photosynthesis
Which structure in the heart prevents the backflow of blood?
A. Aorta
B. Valves
C. Atrium
B. Ventricle
B. Valves
How can birth order influence a child's development?
A. It has no effect on behavior or personality
B. It dictates the child's future success
C. It may shape their interpersonal skills
D. It only affects the youngest child
C. It may shape their interpersonal skills
What does the root "derm" mean in medical terms?
The skin
What organ in the human body can regenerate itself after being partially removed?
The liver
During meiosis I in humans, homologous chromosomes separate. If nondisjunction occurs here for chromosome 21, what condition might result in a gamete and later in the zygote?
Down syndrome (Trisomy 21)
Which organ is primarily responsible for detoxifying chemicals and metabolizing drugs?
A. Stomach
B. Pineal gland
C. Liver
D. Pancreas
C. Liver
Which basic assumption of growth indicates that development processes are ongoing?
A. Progress orderly from simple to complex
B. Continuous processes
C. Highly individualized rate
D. Affect all body systems
B. Continuous processes
What does the suffix "-itis mean"
Inflammation
What vitamin do humans primarily gain from sun exposure?
Vitamin D
In order for DNA molecules to undergo recombination, _______.
A. they must be from the same species
B. their strands must separate as in replication
C. they must be cut and spliced at specific nucleotide sequences
D. one of the two DNA strands must be degrade
C. they must be cut and spliced at specific nucleotide sequences
What is the function of articular cartilage?
A. Connects muscle to bones
B. Reduces friction at joints
C. Produces blood cells
D. Stores fat
B. Reduces friction at joints
Which term describes unequal eye movement?
A. Strabismus
B. Nystagmus
C. Astigmatism
D. Amblyopia
B. Nystagmus
The term "nephrology" refers to the study of what organ?
The kidneys
(nephr- = kidney, -ology = study of)
What is the only muscle in the human body that is attached at just one end?
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with white flowers produces 3/8 tall purple, 1/8 tall white, 3/8 dwarf purple, and 1/8 dwarf white. What is the genotype of the parents?
A. Dd Pp x Dd pp
B. Dd Pp x Dd Pp 
C. DD Pp x dd Pp
D. Dd pp x dd Pp
A. Dd Pp x Dd pp
What is the primary makeup of the hypodermis?
A. Collagen fibers
B. Epithelial cells
C. Adipose tissue
D. Skeletal muscle
C. Adipose tissue
How many breaths per minute is considered normal for infants?
A. 20-30 breaths per minute
B. 30-60 breaths per minute
C. 40-70 breaths per minute
D. 50-80 breaths per minute
B. 30-60 breaths per minute
What does the term "hepatosplenomegaly" mean?
Enlargement (-megaly) of the liver (hepato-) and spleen (spleno-)
What is the rare genetic condition that makes it impossible for people to feel physical pain?
Congenital Insensitivity to Pain (ICP)