Groups of cells that secrete substances are called:
A) organ systems. B) hormones. C) tissues. D) glands.
Answer: D
Biology & Microbiology
You might also like to view...
All the following antimicrobial agents work by inhibiting protein synthesis except:
A) chloramphenicol. B) erythromycin. C) imipenem. D) tetracycline.
Biology & Microbiology
Today nearly every nation in the world belongs to the United Nations
a. true b. false
Biology & Microbiology
Various modifications in leaves can make plants better adapted to their habitats. Which of the following is not an evolutionary modification of leaves?
A. floral leaves B. fruit-bearing leaves C. reproductive leaves D. spines E. insectivorous leaves
Biology & Microbiology
The planned process of cell suicide is called:
A) meiosis. B)mitosis. C) apoptosis. D) metastasis. E) malignancy.
Biology & Microbiology