Question

9) Streptomyces differs from Actinomyces because Streptomyces A) is an archaea. B) produces conidia. C) forms filaments. D) is a strict aerobe. E) is a bacterium. 10) Which of the following statements regarding lichens is FALSE? A) Lichens are a mutualistic relationship between a fungus and a protozoan. B) Lichens represent a mutualistic relationship between a fungus and an alga. C) Lichens are often the first life form to colonize rock or soil. D) The algal partner produces carbohydrates that are absorbed by the fungal partner. E) The fungal partner provides a means of attachment and protects the algal partner from desiccation. 11) Which of the following statements is FALSE? A) Fungi produce sexual spores. B) Fungi produce asexual spores. C) Fungal spores are used in identification of fungi. D) Fungal spores are highly resistant to heat and chemical agents. E) Fungal spores are for asexual or sexual reproduction. 12) Which of the following groups of algae does NOT produce compounds that are toxic to humans? A) diatoms

          9) Streptomyces differs from Actinomyces because Streptomyces
A) is an archaea.
B) produces conidia.
C) forms filaments.
D) is a strict aerobe.
E) is a bacterium.
10) Which of the following statements regarding lichens is FALSE?
A) Lichens are a mutualistic relationship between a fungus and a protozoan.
B) Lichens represent a mutualistic relationship between a fungus and an alga.
C) Lichens are often the first life form to colonize rock or soil.
D) The algal partner produces carbohydrates that are absorbed by the fungal partner.
E) The fungal partner provides a means of attachment and protects the algal partner from
desiccation.
11) Which of the following statements is FALSE?
A) Fungi produce sexual spores.
B) Fungi produce asexual spores.
C) Fungal spores are used in identification of fungi.
D) Fungal spores are highly resistant to heat and chemical agents.
E) Fungal spores are for asexual or sexual reproduction.
12) Which of the following groups of algae does NOT produce compounds that are toxic
to humans?
A) diatoms

Show more…

9) Streptomyces differs from Actinomyces because Streptomyces
A) is an archaea.
B) produces conidia.
C) forms filaments.
D) is a strict aerobe.
E) is a bacterium.
10) Which of the following statements regarding lichens is FALSE?
A) Lichens are a mutualistic relationship between a fungus and a protozoan.
B) Lichens represent a mutualistic relationship between a fungus and an alga.
C) Lichens are often the first life form to colonize rock or soil.
D) The algal partner produces carbohydrates that are absorbed by the fungal partner.
E) The fungal partner provides a means of attachment and protects the algal partner from
desiccation.
11) Which of the following statements is FALSE?
A) Fungi produce sexual spores.
B) Fungi produce asexual spores.
C) Fungal spores are used in identification of fungi.
D) Fungal spores are highly resistant to heat and chemical agents.
E) Fungal spores are for asexual or sexual reproduction.
12) Which of the following groups of algae does NOT produce compounds that are toxic
to humans?
A) diatoms

Added by Angel G.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Sri K

11/06/2022

Step 1

Both are filamentous, Gram-positive bacteria, so "is a bacterium" and "forms filaments" are not distinguishing. Streptomyces characteristically form aerial hyphae that bear chains of spores (conidiospores, often called conidia) and are obligate aerobes; Show more…

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Transcript

00:01 Here we have multiple questions.

00:02 Let us start with the first one.

00:05 The first one is related to the streptomysis and actinomyces.

00:10 Whether these two are aeropes or anaeropes.

00:14 Streptomyces and lactinomyces, these two are bacteria that can form mycelial structure, that is a branched structure, very much similar to fungal hyphae, or fungal mycelia.

00:39 Hence the name mises.

00:43 In both the cases we find this term mises.

00:47 Because their structure is similar to fungal mycelium.

00:50 Streptomysis includes arrangement of chains, arrangement of cells in the form of chains.

01:07 Actinomyses even, it also appears like a branched fungal hyphae.

01:16 Now, considering the options given to us, streptomyces, how it differs from actinomyces means, streptomyces is a strict aerobligate aerob.

01:32 In presence of oxygen only streptomyces can survive.

01:36 In the absence of oxygen, absence of oxygen streptomysis cannot survive or you can consider that it will die.

01:50 This bacteria is used for production of antibiotics like streptomycin.

01:58 Even actinomysitis is also used for production of antibiotics.

02:03 Based on this, the answer for the given question is, option, it is a strict aerobisisisis is a strict error.

02:20 Hence the answer is, for the first question answer is option d, streptomysis is a strict arrow.

02:27 In the second question we have lichens.

02:33 Likens are made up of algae and fungi that exist with the help of symbiasis or mutualism.

02:47 They can grow even on rocks.

02:51 Likens are first indicators of pollution, air pollution because lichen cannot survive in pollution...

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