Which group has six legs and two antennae?

a. crustaceans c. spiders
b. insects d. horseshoe crabs


B

Biology & Microbiology

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Which structure is an example of a tissue?

a. basal lamina b. skin c. neurons d. bone e. fibroblasts

Biology & Microbiology

Blood tests for cancer detect the presence of ____.?

a. cancer cells
b. DNA
c. carcinogens
d. tumor markers
e. enzymes

Biology & Microbiology

Gene regulation during development is _____, which means that _____

A. restrictive; genes are successively lost over time B. restrictive; genes lose developmental potential over time C. hierarchical; genes expressed at each stage control the expression of genes that act later D. hierarchical; genes are turned on in a specific sequence, starting with totipotent and ending with multipotent E. combinatorial; genes expressed at each stage control the expression of genes that act later

Biology & Microbiology

Kelp, a seaweed that is anchored to the seafloor by rootlike structures and can grow to heights of 60 m, is a kind of

A) water mold. B) brown alga. C) green alga. D) diatoms.

Biology & Microbiology