Before photosynthetic cells became abundant, were not widespread.
A. cells using aerobic respiration
B. chemoautotrophs
C. cyanobacteria
D. heterotrophs
E. cells using anaerobic respiration
A. cells using aerobic respiration
You might also like to view...
What is the function of the cell wall?
A. To provide the stiffness needed B. To help maintain the shape of the cell C. To provide protection for the cell D. All of the above are functions of the cell wall
Four of the five answers listed below describe the heterozygous condition. Select the exception
a. homozygous b. carrier c. heterozygotes d. hybrid e. Aa
A patient with leukemia has blood cells that are not dividing properly and are out of control. Treatment consists of a bone marrow transplant. How would this help?
What will be an ideal response?
Although antivenom can save lives, it can also cause what type of reaction in certain patients?
A) type II hypersensitivity B) autoimmune type III hypersensitivity C) nonautoimmune type III hypersensitivity D) type I hypersensitivity E) type IV hypersensitivity