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Life Science Ch 11
Life Science BJU - Ch 11
Question | Answer |
---|---|
How are two bacteria kingdoms different from the four other kingdoms? | They share the characteristic of being the only Prokaryotic organisms. They do not have a true membrane bound nucleus & also lack many of the organelles found in the Eukaryotic organisms. |
Describe the structure of a virus. | It is a nucleic acid core with a protein coat without a cell membrane, cytoplasm or organelles |
Why are viruses not classified into a kingdom? | they are non-living and not made of cells |
List the three shapes bacteria may have. | Coccus, Spirillum & Bacillus |
List three human foods that are produced with the help of bacteria. | Yogurt, pickles & cheese |
How do protozoa and algae differ? | P - are animal-like & a - is plant-like |
How would you distinguish a large colonial organism from a multicellular organism? | If a cell can not live a part from a group it is multicellular |
List 3 structures that a protist may have to help it move. | flagella, cilia & pseudopodia |
How does a euglena obtain energy? | By photosynthesis or by eating |
Contrast fragmentation and conjugation. | C - is a type of sexual reproduction and F - is a type of asexual reproduction |
What are the filamentous cells of a fungus called? | hyphae |
What are the spore-bearing structures of a fungus called? | gills |
Which of the two organisms in the symbiotic relationship known as a lichen benefit from the relationship? | Both - all of the organisms in a symbiotic relationship benefit |
Fungi and plant roots living together in a symbiotic relationship are called? | mycorrhizae |
Name a fungal product that you use. | Cheese |
protozoa | the more animal like protists - they can usually move themselves and capture prey |
algae | the more plant-like protists - they perform photosynthesis and are usually unable to move themselves |
colony | a group of unicellular protists living together though each is capable of living separately |
pseudopodia | the bulges of the cytoplasm |
fragmentation | a form of asexual reproduction of colonies |
conjunction | a type of sexual reproduction carried on by many protists |
hyphae | long filaments of fungal cells |
lichen | appearing as a single organism in fungus |
symbiotic | an occasion in which both species benefit from living together |
mycorrhizae | are the fungi that live in a symbiotic association with the roots of plants |
How rapid or slowly do bacteria reproduce? | With the proper conditions for growth, some bacteria are able to grow and reproduce every 20 minutes. - rapidly |
Bacteria reproduce asexually by ____________________. | binary fision |
How does a virus cause illness? | A virus infects a cell by attaching to it and injecting viral nucleic acid |
Are there any bacteria able to move themselves? | Yes |
What kind of food detritus feeders eat? | dead organisms |
What two characteristics do all protists have in common? | They all have nuclei and do not form water conducting tissues (unicellular) |
What two major groups are found in Kingdom Protista? | protozoa and algae |
Why is conjunction a type of asexual reproduction? | It is carried on by many protists |
List two structural characteristics that most fungi have. | hyphae and spores |
Lichens result from a symbiotic relationship between what two types of organisms? | Fungi and algae |
List 3 ways fungi are beneficial to us. | It decomposes, we have multimillion dollar industries based on fungi in their bi-products, they interacts with plants in beneficial ways |
True or False. Bacteria are considered to be prokaryotic organisms because they lake a true membrane-bound nucleus. | False? |
True or False. All bacteria have the potential to make people sick. | False |
Viruses have _______ cell membrane. | no |
Is not a defense against viruses? | Antibiotics? |
A rod-shaped bacterium is usually called a _______________. | bacillus |
Fragmentation and conjugation can occur in all ______________. | protists |
True of False. All types of fungi have hyphae, but not all species produce spores. | False |
Mycorrhizae are symbiotic relationships between fungi and a plant's _______________. | roots |
______________ is created with the help of fungi. | blue cheese, bread & penicillin |