The necessary substances that a cell can't make on its own are called

A) carbohydrates.
B) nitrogenous bases.
C) vitamins.
D) growth factors.
E) amino acids.


Answer: D

Biology & Microbiology

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

1. Although land plants, mosses are still tied to water because of their flagellated sperm. 2. The conspicuous green patches of mosses that you see in the woods are mostly sporophytes. 3. The conspicuous green parts of ferns that you see in the woods are mostly sporophytes. 4. Flowers, fruits, and endosperm are defining characteristics of the angiosperms.

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Plants adapted to high-nutrient environments have higher growth rates than plants adapted to low-nutrient environments

Indicate whether the statement is true or false

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Briefly describe how a seed develops from the ovule

What will be an ideal response?

Biology & Microbiology

All of the following are examples of domestic terrorism, EXCEPT the:

A) Oklahoma City bombing. B) Centennial Park bombing. C) World Trade Center attack. D) Atlanta abortion clinic attacks.

Biology & Microbiology