BIO 182 Exam 1 ALL QUESTIONS AND CORRECT ANSWERS LATEST UPDATE THIS YEAR NEW!!.

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BIO 182 Exam 1 ALL QUESTIONS AND CORRECT ANSWERS

LATEST UPDATE THIS YEAR NEW!!



QUESTION: What accounts most directly for the extremely fast growth of a fungal mycelium?

A) rapid distribution of synthesized proteins by cytoplasmic streaming

B) a long tubular body shape

C) the readily available nutrients from their ingestive mode of nutrition

D) a dikaryotic condition that supplies greater amounts of proteins and nutrients - ANSWER-A)
rapid distribution of proteins by cytoplasmic streaming leads to the ability for fast growth of
mycelium.




QUESTION: The vegetative (nutritionally active) bodies of most fungi are A) composed of
hyphae.

B) referred to as a mycelium.

C) usually underground.

D) Three of these responses are correct.

E) Two of these responses are correct - ANSWER-D) all three are true




QUESTION: Both fungus-farming ants and their fungi can synthesize the same structural
polysaccharide from the β-glucose. What is this polysaccharide?


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A) amylopectin

B) chitin

C) cellulose

D) lignin

E) glycogen - ANSWER-B) chitin is the polysaccharide




QUESTION: Immediately after karyogamy occurs, which term applies?

A) plasmogamy

B) heterokaryotic

C) dikaryotic

D) diploid - ANSWER-D) karyogamy is the process by which nuclear fusion occurs and diploid
cells are temporarily produced




When a mycelium infiltrates an unexploited source of dead organic matter, what are most likely
to appear within the food source soon thereafter?

A) fungal haustoria

B) soredia

C) fungal enzymes

D) increased oxygen levels




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E) larger bacterial populations - ANSWER-C) fungal enzymes break down all material that is
encountered (external digestion)




QUESTION: karyogamy - ANSWER-Fusion of two haploid nuclei to form a diploid nucleus. Occurs
in many fungi, and in animals and plants during fertilization of gametes




QUESTION: Which description does not apply equally well to both sexual and asexual spores?

A) have haploid nuclei

B) represent the dispersal stage

C) are produced by meiosis

D) upon germination, will subsequently undergo S phase and mitosis - ANSWER-C) asexual
spores are not produced by meiosis rather through a processes carried our by "spore producing
structures"




QUESTION: Plasmogamy can directly result in which of the following?

1. cells with a single haploid nucleus

2. heterokaryotic cells

3. dikaryotic cells

4. cells with two diploid nuclei

A) 1 or 2

B) 1 or 3


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C) 2 or 3

D) 2 or 4

E) 3 or 4 - ANSWER-C)




QUESTION: All protists are

A) unicellular.

B) eukaryotic.

C) symbionts.

D) monophyletic.

E) mixotrophic. - ANSWER-B) all protist are a member of the eukaryotic domain




QUESTION: According to the endosymbiotic theory of the origin of eukaryotic cells, how did
mitochondria originate?

A) from infoldings of the plasma membrane, coupled with mutations of genes for proteins in
energy-transfer reactions

B) from engulfed, originally free-living proteobacteria

C) by secondary endosymbiosis

D) from the nuclear envelope folding outward and forming mitochondrial membranes

E) when a protoeukaryote engaged in a symbiotic relationship with a protocell - ANSWER-B)
endosymbiotic theory describes the modality of obtaining eukaryotic cellular components from
prokaryotic cell


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