FACTORS AFFECTING THE RATE OF CHEMICAL REACTIONS

Set Notations and Real Numbers

What are Polynomial Functions?

ANSWERS TO QUESTIONS OF THE DAY - APRIL 1, 2024

 1. Which of the following structures is not found in a prokaryotic cell?

A. Ribosomes 

B. Plasma membrane 

C. Nucleus 

D. Cell wall 

 

2. Which structure helps transport substances in the cell? 

A. vesicles 

B. vacuole 

C. lysosomes 

D. cytoskeletal fibers. 

 

3. mRNA Leaves the nucleus through the  

A. chromatin 

B.  nuclear pores  

C. nucleolus  

D. chromosomes. 

 

4. How is the nucleus the control center of the cell? 

A. By producing signaling molecules. 

B. By modifying all biomolecules into energy. 

C. By housing DNA 

D. By synthesizing energy in the form of ATP. 

 

5. Which part of an animal cell would breakdown harmful bacteria which has entered the cell? 

A. lysosomes 

B.  Mitochondria 

C. smooth endoplasmic reticulum  

D. rough endoplasmic reticulum 

 

6. When the cell is not dividing, DNA is seen within as ________________ ? 

A. chromatin 

B. the nucleolus 

C. a double Helix strand 

D. chromosomes 

 

7. If a poison specifically destroyed the ribosomes of a cell, what is the main reason that the cell would die?  

A. the cell would not be able to digest any unwanted bacteria. 

 B. there would be no more nutrients transported into the cell.  

C. the cell would not be able to make any new proteins. 

 D the cell would no longer be able to move. 

 

8. Which statement below does not apply to cytoskeleton? 

A. In animals, it is used to support the shape 

 B. anchors organelles but allows them to move 

 C. network of protein fibers within the cytoplasm.  

D. examples are actin, microtubules and vacuoles 

9. Compared to prokaryotic cells, which are the following is true about eukaryotic cells. 

A.  eukaryotic cells are smaller. 

B. eukaryotic cells have no plasma membrane 

C. eukaryotic cells have a nucleus. 

 D eukaryotic cells have a capsule. 

 

10. If eukaryotic cells lacked Golgi apparatus, which of the following will be true? 

A.  It could not package proteins. 

B.  It would not have genetic information. 

C.  It could not maintain its shape.  

D.  It could not make energy. 

PRACTICE QUESTIONS FOR THE DAY-APRIL 1, 2024

ANSWERS ARE PROVIDED IN THE NEXT POST

1. Which of the following structures is not found in a prokaryotic cell?

A. Ribosomes 

B. Plasma membrane 

C. Nucleus 

D. Cell wall 

 

2. Which structure helps transport substances in the cell? 

A. vesicles 

B. vacuole 

C. lysosomes 

D. cytoskeletal fibers. 

 

3. mRNA Leaves the nucleus through the  

A. chromatin 

B.  nuclear pores  

C. nucleolus  

D. chromosomes. 

 

4. How is the nucleus the control center of the cell? 

A. By producing signaling molecules. 

B. By modifying all biomolecules into energy. 

C. By housing DNA 

D. By synthesizing energy in the form of ATP. 

 

5. Which part of an animal cell would breakdown harmful bacteria which has entered the cell? 

A. lysosomes 

B.  Mitochondria 

C. smooth endoplasmic reticulum  

D. rough endoplasmic reticulum 

 

6. When the cell is not dividing, DNA is seen within as ________________ ? 

A. chromatin 

B. the nucleolus 

C. a double Helix strand 

D. chromosomes 

 

7. If a poison specifically destroyed the ribosomes of a cell, what is the main reason that the cell would die?  

A. the cell would not be able to digest any unwanted bacteria. 

 B. there would be no more nutrients transported into the cell.  

C. the cell would not be able to make any new proteins. 

 D the cell would no longer be able to move. 

 

8. Which statement below does not apply to cytoskeleton? 

A. In animals, it is used to support the shape 

 B. anchors organelles but allows them to move 

 C. network of protein fibers within the cytoplasm.  

D. examples are actin, microtubules and vacuoles 

9. Compared to prokaryotic cells, which are the following is true about eukaryotic cells. 

A.  eukaryotic cells are smaller. 

B. eukaryotic cells have no plasma membrane 

C. eukaryotic cells have a nucleus. 

 D eukaryotic cells have a capsule. 

 

10. If eukaryotic cells lacked Golgi apparatus, which of the following will be true? 

A.  It could not package proteins. 

B.  It would not have genetic information. 

C.  It could not maintain its shape.  

D.  It could not make energy. 

THE ANATOMY OF THE TOOTH AND PRACTICE QUESTIONS

MULTIPLE CHOICE QUESTIONS ON THE TEETH

 1. Which of the following is the hardest substance in the human body?

 A) Enamel          

 B) Dentin 

C) Pulp 

D) Cementum

Answer: A) Enamel

Rationale: Enamel is the outermost layer of the tooth, and it is the hardest substance in the human body. It protects the tooth from wear and tear caused by chewing and other activities. Dentin is the layer under the enamel and is less hard than enamel but still quite durable. Pulp is the soft tissue located in the center of the tooth, while cementum is the layer of connective tissue that covers the root of the tooth.

2. What is the function of the periodontal ligament? 

A) It provides shock absorption during chewing 

B) It nourishes the tooth and keeps it healthy 

C) It anchors the tooth to the jawbone 

D) It protects the tooth from wear and tear

Answer: A) It provides shock absorption during chewing

Rationale: The periodontal ligament is the tissue that attaches the cementum to the bone that surrounds the tooth. It provides shock absorption during chewing and helps to keep the tooth stable. It does not nourish the tooth or protect it from wear and tear, and while it does anchor the tooth to the jawbone, this is not its primary function.

3. Which type of tooth is responsible for cutting and tearing food? 

A) Incisors

B) Canines 

C) Premolars 

D) Molars

Answer: A) Incisors

4. Which type of tooth is responsible for grinding and crushing food? 

A) Incisors 

B) Canines 

C) Premolars 

D) Molars

Answer: D) Molars

5. Which layer of the tooth contains nerves and blood vessels? 

A) Enamel 

B) Dentin 

C) Pulp 

D) Cementum

Answer: C) Pulp

6. What is the term for the hard deposit that forms on teeth due to a buildup of bacteria? 

A) Plaque 

B) Tartar 

C) Decay 

D) Cavity

Answer: B) TartarWhat is the term for a tooth that has not emerged from the gumline? A) Impacted B) Decayed C) Infected D) Abscessed

Answer: A) Impacted

7. What is the term for the loss of tooth structure due to acid produced by bacteria? 

A) Plaque 

B) Tartar 

C) Decay 

D) Cavity

Answer: C) Decay

8. Which type of tooth is often referred to as the "eye tooth"? 

A) Incisor 

B) Canine

C) Premolar 

D) Molar

Answer: B) Canine

9. What is the term for the surgical removal of a tooth? 

A) Extraction

 B) Filling 

 C) Root canal

 D) Crown

Answer: A) Extraction

10. What is the term for a dental restoration that covers the entire surface of a tooth? 

A) Filling 

B) Crown 

C) Bridge 

D) Implant

Answer: B) Crown

11. What is the term for a tooth that is not properly aligned with the other teeth? 

A) Impacted 

B) Decayed

C) Malocclusion 

D) Abscessed

Answer: C) Malocclusion