To compare: The structure of planarian and earthworm with regard to their: digestive tract, body cavity and the segmentation. Concept introduction: The Planaria is a flatworm that is included in phylum Platyhelminthes . They have no body cavity as they are flat. They resemble ribbon shape and are about 1mm to 20 m. They have incomplete digestive system . They show bilateral symmetry. Many species of flatworms are parasitic in nature. The flatworms are bilaterally symmetrical animals. The Earthworm is included in phylum Annelida which is the group of animals that are included in the invertebrates. These are the true segmented worms that have flexible body and no hard skeleton is present in their body. They have closed circulatory system, small brain, nervous system and excretory system. They do not have legs. Their body cavity is filled with coelom. Their size range from 1 mm to 3 m. They are found in various habitats like in soil, at the bottom of the ocean or in fresh waters.

Question

19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000

Answer 1

Question

Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

Chapter 18, Problem 17TYK

Summary Introduction

To compare: The structure of planarian and earthworm with regard to their: digestive tract, body cavity and the segmentation.

Concept introduction: The Planaria is a flatworm that is included in phylum Platyhelminthes. They have no body cavity as they are flat. They resemble ribbon shape and are about 1mm to 20 m. They have incomplete digestive system. They show bilateral symmetry. Many species of flatworms are parasitic in nature. The flatworms are bilaterally symmetrical animals.

The Earthworm is included in phylum Annelida which is the group of animals that are included in the invertebrates. These are the true segmented worms that have flexible body and no hard skeleton is present in their body. They have closed circulatory system, small brain, nervous system and excretory system. They do not have legs. Their body cavity is filled with coelom. Their size range from 1 mm to 3 m. They are found in various habitats like in soil, at the bottom of the ocean or in fresh waters.

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19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000

Match the letter labels in the figure below to the terms. Some letter labels are not used. MNNNNNNIN M C B A M D F E H K G 8

The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions. 1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction? 2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe: a) What molecule do you recommend for the trial. Why? b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for? 3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale. 4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale. Mutation 1 Mutation 2

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Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

Chapter 18, Problem 17TYK

Summary Introduction

To compare: The structure of planarian and earthworm with regard to their: digestive tract, body cavity and the segmentation.

Concept introduction: The Planaria is a flatworm that is included in phylum Platyhelminthes. They have no body cavity as they are flat. They resemble ribbon shape and are about 1mm to 20 m. They have incomplete digestive system. They show bilateral symmetry. Many species of flatworms are parasitic in nature. The flatworms are bilaterally symmetrical animals.

The Earthworm is included in phylum Annelida which is the group of animals that are included in the invertebrates. These are the true segmented worms that have flexible body and no hard skeleton is present in their body. They have closed circulatory system, small brain, nervous system and excretory system. They do not have legs. Their body cavity is filled with coelom. Their size range from 1 mm to 3 m. They are found in various habitats like in soil, at the bottom of the ocean or in fresh waters.

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Answer 3

Question

Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

Chapter 18, Problem 17TYK

Summary Introduction

To compare: The structure of planarian and earthworm with regard to their: digestive tract, body cavity and the segmentation.

Concept introduction: The Planaria is a flatworm that is included in phylum Platyhelminthes. They have no body cavity as they are flat. They resemble ribbon shape and are about 1mm to 20 m. They have incomplete digestive system. They show bilateral symmetry. Many species of flatworms are parasitic in nature. The flatworms are bilaterally symmetrical animals.

The Earthworm is included in phylum Annelida which is the group of animals that are included in the invertebrates. These are the true segmented worms that have flexible body and no hard skeleton is present in their body. They have closed circulatory system, small brain, nervous system and excretory system. They do not have legs. Their body cavity is filled with coelom. Their size range from 1 mm to 3 m. They are found in various habitats like in soil, at the bottom of the ocean or in fresh waters.

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Answer 4

Question

Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.

Chapter 18, Problem 17TYK

Summary Introduction