In planarian flatworms, which organ(s) rids the body of excess water and soluble wastes?
A. Coelom
B. Malpighian tubule
C. Nephridia
D. Protonephridia
E. Kidney
Answer: D
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Fossils in the deepest layers of sedimentary rocks are typically ____ compared to fossils in the more shallow layers
a. relatively large and fragile b. those that resemble living organisms c. those that resemble dinosaurs d. larger and more complex e. relatively small and simple
Following a medical examination, an individual discovers that she has a large tumor located in the area of the brain known as the reticular formation, located in the lower part of the brain stem
Which symptoms would this person experience as a consequence? A) difficulty swallowing and breathing B) inability to feel pain C) inability to maintain balance D) difficulty concentrating in a noisy room
Which of the following states (in modern terms) that a diploid cell has two alleles of every gene-one on each homologous chromosome-that are distributed into separate gametes during meiosis?
A. Law of segregation B. Monohybrid cross C. Law of independent assortment D. Testcross E. Allelic inheritance
The principal components of cell membranes are:
A) carbohydrates. B) proteins. C) nucleic acids. D) phospholipids. E) sterols.