24jin fungl, food materials are digested A) 2Within food vacuoles B) Outside the
ID: 205913 • Letter: 2
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24jin fungl, food materials are digested A) 2Within food vacuoles B) Outside the body C) Intracellularly D] By mitochondria E) By the host organism 25) Proksryote otingefons. These secondary rings of DNA are called genomes often include a central ring of DNA that carry genes involved in" A) flagella B) pili C) endospores D) ribosomes E) plasmids and their energy from . 2)Chern aut trphic bacteria obtain their carbon from A) COP.. sunlight 27) Fungi A) are similar to bacteria because fungi are composed of prokaryotic cells B) are similar to bacteria because fungi use extra cellular digestion to obtain their nutrients C) are similar to green plants because fungi produce chlorophyll. D) differ from members of the animal kingdom because fungi are autotrophic. E) and green plants have cells that are surrounded by a cell wall made of cellulose. 28) What kind of entity is a lichen? A) an association between a fungus and a brown alga. B) an association between a multicellular protest related to the brown algae and a bacterium. C) an association between a fungus and cyanobacteria or green algae. D) an association between a bryophyte and a fungus E) an association between a bryophyte and a bacterium.Explanation / Answer
24) In fungi, food materials are digested: B) Outside the body.
Fungi secrete digestive enzymes to break down the substrate on which they grow. These enzymes split large complex nutrient molecules to simpler and smaller units that can be absorbed across the cell membrane, allowing the fungi to utilize these nutrients. This is sometimes referred to as osmotrophic nutrition. These fungi are saprophytes while some are parasites where they rely for nutrients on the host on which they grow. In both cases the food materials are digested outside body.
25) Prokaryote genomes often include a central ring of DNA that carry genes involved in "contingency" functions. These secondary rings of DNA are called: E) plasmids.
Plasmids are small DNA molecules within the cell, which are physically seperated from the main chromosome, and are still capable of autnomous replication.
26) Chemoautotrophic bacteria obtain their carbon from _________ and their energy from ____________ .: B) CO2.....reactions involving inorganic chemicals.
Autotrophic bacteria obtain the carbon they require for survival and growth directly from CO2. Photoautotrophic bacteria derive their energy from sunlight while chemoautotrophic bacteria obtain their energy from oxidation of inorganic compounds.
27) Fungi B) are similar to bacteria because fungi use extracellular digestion to obtain their nutrients.
Fungi are eukaryotic as all cells have a well defined nucleus with chromosomes and nuclear membrane, and are often multicellular. They are similar to green plants because they have cell walls, which are made up of chitin unlike cellulose. They do not have chlorophyll. Hence they are not photoautotrophic. But they are chemoautotrophic. Again not all members are autotrophic, some are parasitic as well.
28) What kind of entity is a lichen? C) an association between a fungus and cyanobacteria or green algae.
Tha main body of lichen is made up of fungal filaments, which surround algal or cyanobacteria cells which are photosynthetic.
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