sci_mod10 Flashcards
A cell that has no organelles
Prokaryotic cell
A cell with organelles
Eukaryotic cell
An organism that causes disease
Pathogen
Organisms that break down the dead remains of other organisms
Decomposers
The process by which the stem of a plant can form new roots and develop into a mature plant
Vegetative reproduction
Name the five kingdoms.
The five kingdoms are: Monera, Protista, Fungi, Plantae, and Animalia.
An organism is made up of several eukaryotic cells and eats only dead organisms. To which kingdom does it belong?
Since it is made up of several eukaryotic cells, it is not in Kingdom Monera. Since it eats dead organisms, it is probably a decomposer. Thus, it is in kingdom Fungi.
An organism is made up of several eukaryotic cells and makes its own food. It has specialized structures that perform individual tasks. To which kingdom does it belong?
Since it is made up of several eukaryotic cells, it is not in kingdom Monera. Since it makes its own food, it is probably a plant. However, now that you know about algae, you have to be a bit concerned, because it might be algae and thus belong to kingdom Protista. However, algae does not have specialized structures, so this is not algae. It therefore must be in kingdom Plantae.
An organism is made up of one prokaryotic cell and eats only dead organisms. To which kingdom does it belong?
If it is a single, prokaryotic cell, it must be in kingdom Monera. The part about eating dead organisms is just there to fool you. Regardless of its eating habits, because it is a prokaryotic cell, it can only be a part of kingdom Monera.
An organism is made up of several eukaryotic cells and makes its own food. It has no specialized structures. To which kingdom does it belong?
Since it is made up of several eukaryotic cells and makes its own food, it is either algae or a plant. Since it has no specialized structures, it is algae. This puts it in kingdom Protista.
An organism is made up of one eukaryotic cell and eats other, living organisms. To which kingdom does it belong?
If it is a single, eukaryotic cell, it is most likely in kingdom Protista. If it ate only dead organisms, it could be a single-celled fungus. However, the problem says it eats other, living organisms. That means it is not in kingdom Fungi.
An organism is made up of several eukaryotic cells and eats only living plants. To which kingdom does it belong?
Since it is made up of several eukaryotic cells, it is not in kingdom Monera. Since it does not make its own food, it is not a plant and thus not in Plantae. Since it is more than one cell and is not algae, then it is not in kingdom Protista. It eats living plants, so it is not in kingdom Fungi, either. Thus, it must be in kingdom Animalia.
Why can dehydrated food be stored for a long time without worry of it being contaminated by bacteria?
Bacteria must have water to survive. Dehydrated food has almost all of the water removed, so bacteria cannot survive to grow and reproduce.
Why did people salt meat before refrigeration was available?
The presence of salt reduces the growth and reproduction of bacteria. Thus, salt protects meat from contamination by bacteria.
When you store food for a long time, why does covering it reduce the amount of bacterial contamination?
Bacteria can be introduced onto food or liquid by dust particles in the air. Covering the food keeps the dust particles off, preventing the addition of new bacteria onto the food.
