I believe that I have answered the following questions correctly, but would like some reassurance.
organisms that are used to decontaminate soils may
a. store contaminates in their tissues
b. release pollutants into the air
c. degrade the pollutants
d. be plants or microorganisms
**e. all the above**
polysaccharides are used by plants for
a. food storage
b. food storage and structural support
c. cementing cells together
d. structural support
**e. food storage, structural support, and cementing cells together**
Chemicals produced by one group of cells that affect other target cells are called
a. secretions
b. plymers
c. steroids
**d. signaling molecules**
e. enzymes
The endosperm of a plant
a. produces sperm cells
b. protects the young embryo within a seed
**c. is the food supply for the new sporophyte plant**
d. provides a connection between the ovary of a flower and a developing seed
e. composed of haploid tissue
They are all right. I take AP BIO.
To verify if your answers are correct, let's break down each question and the options:
Question 1: "Organisms that are used to decontaminate soils may" - The options are (a) store contaminates in their tissues, (b) release pollutants into the air, (c) degrade the pollutants, and (d) be plants or microorganisms. Your answer is (e) all the above.
Explanation: The correct answer is (e) all the above. Organisms used for soil decontamination can possess a combination of these characteristics. They can store contaminants in their tissues, release pollutants into the air, and degrade the pollutants. Plants and microorganisms are commonly utilized for this purpose.
Question 2: "Polysaccharides are used by plants for" - The options are (a) food storage, (b) food storage and structural support, (c) cementing cells together, and (d) structural support. Your answer is (e) food storage, structural support, and cementing cells together.
Explanation: The correct answer is (e) food storage, structural support, and cementing cells together. Polysaccharides, such as starch and cellulose, serve multiple functions in plants. They are used for food storage (as starch), structural support (via cellulose), and also for cementing cells together in certain plant structures.
Question 3: "Chemicals produced by one group of cells that affect other target cells are called" - The options are (a) secretions, (b) polymers, (c) steroids, (d) signaling molecules, and (e) enzymes. Your answer is (d) signaling molecules.
Explanation: The correct answer is (d) signaling molecules. Chemicals produced by one group of cells that influence or interact with other specific cells in the body are referred to as signaling molecules. These molecules play a crucial role in cellular communication and coordination within organisms.
Question 4: "The endosperm of a plant" - The options are (a) produces sperm cells, (b) protects the young embryo within a seed, (c) is the food supply for the new sporophyte plant, (d) provides a connection between the ovary of a flower and a developing seed, and (e) composed of haploid tissue. Your answer is (c) is the food supply for the new sporophyte plant.
Explanation: The correct answer is (c) is the food supply for the new sporophyte plant. The endosperm is a tissue found within the seed of a plant. Its primary function is to serve as a nutrient-rich food supply for the developing sporophyte (embryo) plant, ensuring its initial growth and development.
Based on your provided answers, it seems that you have correctly identified the correct options for all four questions. Well done!