You dissect a specimen of a vertebrate during an anatomy laboratory. It has the following characteristics: lungs, abundant blood capillaries under thin skin, a partially-divided heart, a pulmonary circuit, and four walking legs. What is this animal?

A. reptile
B. amphibian
C. marsupial mammal
D. placental mammal
E. lungfish


Answer: B

Biology & Microbiology

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Answer the following statement true (T) or false (F)

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Connective tissue includes adipose tissue, tendons, bone, cartilage, and blood. What do all these tissues have in common?  

A.  They all consist of few cells sparsely distributed in large amounts of extracellular material. B.  They all provide structural support to the body. C.  They are all hard tissues. D.  They all physically bind other tissues together.

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Describe the symbiotic relationships of tube-dwelling and burrowing worms

What will be an ideal response?

Biology & Microbiology

Which one of the following ions outside the neuron would make it very difficult for a depolarization to occur?

A) chloride B) potassium C) sodium D) manganese

Biology & Microbiology