The sinoatrial node consists of modified _______ tissue.

A. nervous
B. muscular
C. epithelial
D. connective
E. adipose


B. muscular

Biology & Microbiology

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What distribution pattern is the most common in the natural world?

a. random b. uniform c. clumped d. stratified or layered e. homogeneous

Biology & Microbiology

Stomach emptying is controlled by ____ moving down the stomach wall

a. gastrin b. waves of peristalsis c. spinal cord reflexes d. HCl secretions e. rugae

Biology & Microbiology

Smaller than diatoms, the ________, which include tiny cyanobacteria, haptophtyes, and coccolithophores, make up the largest biomass in temperate and tropical water

Fill in the blank(s) with correct word

Biology & Microbiology

Diagram a flower, labeling the parts and identify the function of each labeled part from the following

list: a) reproduction male, b) reproduction female, c) attracting a pollinator, d) point of attachment of flower parts, and e) protection for a bud. What will be an ideal response?

Biology & Microbiology