The ________ provide(s) an effective physical barrier to invasive microbes, while ________ provide(s) an effective chemical barrier.
A. lysosomes; ciliated cells
B. mucous membranes; stomach acid
C. perspiration on the skin; sebum from glands
D. normal flora; skin
Answer: B
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The gene for normal skin pigment (
A) can also code for the recessive trait of albinism (a). An albino man and a homozygous normal pigmented woman marry and have four children. What is the phenotype of the children? A) 75% normal skin pigment and 25% albino B) 100% normal skin pigment C) 50% normal skin pigment and 50% albino D) 25% normal skin pigment and 75% albino E) 100% albino
An inflammation of the tonsils is referred to as __________.
Fill in the blank(s) with the appropriate word(s).
When the testicles are too cold the _____ muscles in the spermatic cord contract drawing them closer to the warmth of the body.
A) Detrusor B) Cremaster C) Testicular D) Dartos E) Inguinal
Which type of tissue covers exposed surfaces of the body?
A) neural B) muscle C) connective D) epithelial E) supportive