1. Eukaryotic cells typically have all of the following cellular components: a)

Question

1. Eukaryotic cells typically have all of the following cellular components:

a) nucleus, mitochondria, chitin cell wall, ribosomes, plasma membrane, cytoplasm

b) mitochondria, peptidoglycan cell wall, nucleus, ribosomes, plasma membrane, cytoplasm

c) mitochondria, cell wall, nucleus, ribosomes, plasma membrane, cytoplasm

d) cytoplasm, nucleus, plasma membrane, capsid, mitochondria, ribosomes

2. ___________________ is a feature unique to Archaea.

a) A thick peptidoglycan cell wall

b) Ether linkage in plasma membrane isoprene lipids

c) Mitochondrial respiration under aerobic conditions

d) Endospore production under starvation or hyperthermophilic conditions

3. Viral capsid symmetry can be in the form of _________________.

a) icosahedral

b) complex

c) parallel

d) a & be) a, b and c

4. In sexual reproduction of the ascomycete fungi, typically 8 ______________ are produced in an ___________,of which many are located on the larger _______________ fruiting body

a) ascospores; ascocarp; ascus

b) ascospores; ascus; ascocarp

c) basidiospores; basidiocarp; basidia

d) asci; ascocarp; ascospore

5. In a mutualistic lichen relationship, a photosynthetic protist would be responsible for supplying_______________ to both members of the relationship.a) carbon in the form of fermentation products

b) water and soil nutrients

c) carbon in the form of photosynthetic sugars

d) structure and protection from harsh environmental conditions

6. Aseptate fungi are characterized by ____________________________.

a) a general lack of structure in a disconnected and unorganized mat of hyphae

b) a lack of septa between cell chambers within a strand of hyphae

c) a special condition where the septum splits the nucleus into two parts so that it can be shared between

cells

d) an overproduction of septa between the cells in a strand of hyphae

7. General virus classification, as specified by the International Committee of Taxonomy of Viruses, includes the following characteristics

a) Nucleic acid type, metabolic state of the viral host, symmetry of capsid

b) Symmetry of capsid, presence/lack of an envelope, geographic region of origin

c) Length of nucleic acid genome, symmetry of capsid, presence/lack of an envelope

d) Presence/lack of an envelope, symmetry of capsid, nucleic acid type8. In Gram-positive bacteria, peptidoglycan _________________, while in Gram-negative bacteria,peptidoglycan _________________.a) IS the cell wall; is a component of the cell wall along with the outer

8. In Gram-positive bacteria, peptidoglycan _________________, while in Gram-negative bacteria,peptidoglycan _________________.

a) IS the cell wall; is a component of the cell wall along with the outer membrane

b) is a component of the cell wall along with lipopolysaccharide (LPS); IS the cell wall

c) IS the cell wall; is a component of the cell wall along with teichoic acid

d) is a component of the cell wall along with lipopolysaccharide (LPS); is a component of the cell wall along

with the outer membrane

9. What is the genus name of the following organism? Escherichia coli O157:H7

a) coli
b) Escherichia coli

c) Escherichia

d) O157:H7

10. _________________________ are the key structural components of the peptidoglycan polymer found in the cell walls of bacteria.

a) teichoic acid and lipoteichoic acid

b) N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)

c) N-acetylmuramic acid (NAM) and teichoic acid

d) pseudomurein and periplasmodial sugars

Aseptate fungi are characterized by ____________________________.a) a general lack of structure in a disconnected and unorganized mat of hyphaeb) a lack of septa between cell chambers within a strand of hyphaec) a special condition where the septum splits the nucleus into two parts so that it can be shared between

cellsd) an overproduction of septa between the cells in a strand of hyphae7. General virus classification, as specified by the International Committee of Taxonomy of Viruses, includes thefollowing characteristics:a) Nucleic acid type, metabolic state of the viral host, symmetry of capsidb) Symmetry of capsid, presence/lack of an envelope, geographic region of originc) Length of nucleic acid genome, symmetry of capsid, presence/lack of an enveloped) Presence/lack of an envelope, symmetry of capsid, nucleic acid type8. In Gram-positive bacteria, peptidoglycan _________________, while in Gram-negative bacteria,peptidoglycan _________________.a) IS the cell wall; is a component of the cell wall along with the outer membraneb) is a component of the cell wall along with lipopolysaccharide (LPS); IS the cell wallc) IS the cell wall; is a component of the cell wall along with teichoic acidd) is a component of the cell wall along with lipopolysaccharide (LPS); is a component of the cell wall along

with the outer membrane

9. What is the genus name of the following organism? Escherichia coli O157:H7

a) coli
b) Escherichia colic) Escherichiad) O157:H7

10. _________________________ are the key structural components of the peptidoglycan polymer found in thecell walls of bacteria.

a) teichoic acid and lipoteichoic acid

b) N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)

c) N-acetylmuramic acid (NAM) and teichoic acid

d) pseudomurein and periplasmodial sugars

Explanation / Answer

1c) mitochondria, cell wall, nucleus, ribosomes, plasma membrane, cytoplasm

Cell wall is not made of peptidogylan in eukaryoted and structures like capsids are also not characteristic

2 b) Ether linkage in plasma membrane isoprene lipids

In archea the linkages are ether type where as in other bacteria it is of ester type. So this is a unique feature.

3 a icosahedral. The rest are not symmetry types

4b) ascospores; ascus; ascocarp

the ascus is the sexual spore bearing structure producing 8 ascospores. It is located in the fruiting body called ascocarp

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