1. Yeast uses photosynthesis to provide its own energy. True or False 2. Yeast has chlorophyll. True or False 3. Given the statements below, choose the one that is true about one-celled living things. 1. Under normal conditions, yeast produces spores. 2. The adult stage for one-celled organisms is usually extremely long. 3. Algae can only be unicellular. 4. Because of its size, algae does not make much oxygen for the earth.

1. False

2. False

3. The adult stage for one-celled organisms is usually extremely long.

Explanation:

1. Yeast is a fungus that uses heterotrophic means of obtaining food. A yeast cell does not have the ability to perform photosynthesis (provide energy source) because it cannot make use of light energy from the sun. Hence, the answer is FALSE.

2. The cells of a yeast lacks chlorophyll pigment needed for the capturing of light energy. Hence, this statement is FALSE.

3. Yeast is a unicellular organism that reproduces via spores and budding. Budding is the asexual form of reproduction while they produce spores when stressed. However, the adult stage for one-celled organisms is usually extremely long.

b. to discover aspects of the natural world.

hopefully i .