The immunoglobulin known as ________ promotes the release of histamines and other agents that produce allergic symptoms.
A. IgG
B. IgE
C. IgM
D. IgA
Answer: B
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Plant defenses against herbivore grazing include
(a) thorns. (b) plant secondary compounds. (c) mobility. (d) both a and b.
A gland that produces alkaline secretions that function to activate sperm and reduce the acidity of the female reproductive system. _____
A) Endometrium
B) Testis
C) Cervix
D) Uterus
E) Oviduct
F) Ovaries
G) Vagina
H) Seminal vesicle
I) Penis
J) Prostate gland
K) Vas deferens
L) Glans penis
Jermaine and Shikia are healthy parents of three young children. The oldest two, Bethany and Amber, are healthy, and they are six and four, respectively. Their youngest child, Roscoe, was born with Peeling Skin Syndrome two years ago. Roscoe's skin constantly peels, and is red and itchy. If Jermaine and Shikia have another child, the probability that he or she will inherit the skin condition is
A) 1/8. B) 1/4. C) 1/3. D) 2/3.
Stem and root thickening in eudicots is
accomplished by ___ and is called ___ growth.
a. lateral meristems--primary b. lateral meristems--secondary c. apical meristems--primary d. apical meristems--secondary e. apical meristems--lateral