Question

Which term means a group of similar cells combined to perform a common function?

Answer 1

Correct Answers:

Tissue.

Rationale :

💎 A tissue is defined as a group of similar cells that work together to perform a specific function.

💎 Examples include muscle tissue, epithelial tissue, nervous tissue, and connective tissue.

💎 Organs are composed of several different tissues working together for a larger function.

💎 Systems are groups of organs, and an organism is a complete living being.

💎 Therefore, the correct term for a group of similar cells with a shared function is tissue.

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Answer 2

Correct Answers:

Phenotype.

Rationale :

🔷 The phenotype of an organism refers to its observable characteristics or physical appearance.

🔷 It is determined by the interaction between genetic makeup (genotype) and environmental factors.

🔷 Examples include eye color, height, or blood type expression.

🔷 “Genotype” refers to the actual genetic code, while “homozygote” and “karyotype” describe genetic composition forms or chromosome appearance.

🔷 Thus, phenotype correctly represents the visible traits of an organism.

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Answer 3

Correct Answers:

ATP.

Rationale :

🟢 The mitochondrion is known as the “powerhouse of the cell” because it produces adenosine triphosphate (ATP).

🟢 ATP is the primary energy currency that powers cellular processes.

🟢 This energy is produced during cellular respiration, which converts glucose and oxygen into ATP.

🟢 Mitochondria also regulate cell metabolism and energy distribution.

🟢 Therefore, ATP is the energy product that gives mitochondria their nickname.

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Answer 4

Correct Answers:

Flagellum.

Rationale :

🔶 The flagellum is a whip-like tail that enables sperm cells to move or swim.

🔶 It provides motility necessary for sperm to reach and fertilize the ovum.

🔶 “Cilium” are shorter hairlike structures used for movement in other cells (e.g., respiratory tract).

🔶 “Centriole” and “centrosome” help in cell division, not locomotion.

🔶 Therefore, the flagellum is the correct structure responsible for sperm motility.

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Answer 5

Correct Answers:

Obtain energy in the form of ATP.

Rationale :

🔵 The main purpose of cellular respiration is to convert glucose and oxygen into ATP, providing usable energy for the cell.

🔵 The process occurs in the mitochondria and involves glycolysis, the Krebs cycle, and the electron transport chain.

🔵 It releases energy, carbon dioxide, and water as by-products.

🔵 It does not produce oxygen; rather, it uses oxygen in aerobic respiration.

🔵 Therefore, the correct purpose is to obtain energy in the form of ATP.

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Answer 6

Correct Answers:

Oxygen.

Rationale :

💎 Aerobic respiration requires oxygen to break down glucose and produce ATP efficiently.

💎 Oxygen acts as the final electron acceptor in the electron transport chain within the mitochondria.

💎 The process yields up to 36–38 ATP molecules per glucose, far more than anaerobic respiration.

💎 Without oxygen, cells shift to anaerobic respiration, producing lactic acid instead.

💎 Therefore, oxygen is the essential molecule for aerobic respiration.

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Answer 7

Correct Answers:

Hydrogen.

Rationale :

🔷 DNA strands are held together by hydrogen bonds between complementary nitrogenous bases.

🔷 Adenine pairs with thymine via two hydrogen bonds, while cytosine pairs with guanine via three hydrogen bonds.

🔷 These weak bonds allow DNA strands to separate easily during replication and transcription.

🔷 Sodium chloride, potassium bromide, and copper are ionic or metallic compounds, not biological bonds.

🔷 Therefore, hydrogen bonds are responsible for holding the DNA double helix together.

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Answer 8

Correct Answers:

Cell wall.

Rationale :

🟢 The cell wall is a rigid outer structure found in plant cells, providing support, shape, and protection.

🟢 It is primarily composed of cellulose, which gives strength and prevents bursting under osmotic pressure.

🟢 The cell membrane lies beneath it and controls substance entry and exit.

🟢 “Xylem” is a vascular tissue, and “chloroplast” is responsible for photosynthesis.

🟢 Therefore, the cell wall is the correct structural and supportive component of a plant cell.

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Answer 9

Correct Answers:

Stage.

Rationale :

🔶 On a light microscope, the stage is the flat platform where the slide is placed for observation.

🔶 It often has clips or a mechanical stage to hold and adjust the slide position.

🔶 The lens magnifies, the base provides stability, and the arm supports the microscope body.

🔶 The stage allows proper alignment of light and focus through the specimen.

🔶 Thus, the stage is the correct part for slide placement.

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Answer 10

Correct Answers:

Phospholipids.

Rationale :

🔵 The cell membrane (plasma membrane) consists of a phospholipid bilayer with embedded proteins.

🔵 Each phospholipid molecule has a hydrophilic head and hydrophobic tail, forming a selective barrier.

🔵 This structure allows semi-permeability, controlling the movement of substances in and out of the cell.

🔵 Proteins and carbohydrates are also present but in smaller proportions — they assist with signaling and transport.

🔵 Therefore, the phospholipid bilayer forms the main structure of the cell membrane.

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QLexNursing

1 :
Which term means a group of similar cells combined to perform a common function?

2 :
Which genetic descriptor refers to an organism's actual appearance?

3 :
What does the mitochondrion produce that causes it too often be called the powerhouse of the cell?

4 :
What structure allows sperm cells to move?

5 :
What is the purpose of cellular respiration?

6 :
Aerobic respiration occurs in the presence of what necessary molecule?

7 :
What type of bond in the base of the DNA nucleotides holds the strands together?

8 :
What part of a plant cell acts as a barrier and provides support to the cell?

9 :
On what part of a light microscope is the slide placed?

10 :
The cellular membrane consists of a bilayer of which substances?

QLexNursing

1 : Which term means a group of similar cells combined to perform a common function?

2 : Which genetic descriptor refers to an organism's actual appearance?

3 : What does the mitochondrion produce that causes it too often be called the powerhouse of the cell?

4 : What structure allows sperm cells to move?

5 : What is the purpose of cellular respiration?

6 : Aerobic respiration occurs in the presence of what necessary molecule?

7 : What type of bond in the base of the DNA nucleotides holds the strands together?

8 : What part of a plant cell acts as a barrier and provides support to the cell?

9 : On what part of a light microscope is the slide placed?

10 : The cellular membrane consists of a bilayer of which substances?

1 :
Which term means a group of similar cells combined to perform a common function?

2 :
Which genetic descriptor refers to an organism's actual appearance?

3 :
What does the mitochondrion produce that causes it too often be called the powerhouse of the cell?

4 :
What structure allows sperm cells to move?

5 :
What is the purpose of cellular respiration?

6 :
Aerobic respiration occurs in the presence of what necessary molecule?

7 :
What type of bond in the base of the DNA nucleotides holds the strands together?

8 :
What part of a plant cell acts as a barrier and provides support to the cell?

9 :
On what part of a light microscope is the slide placed?

10 :
The cellular membrane consists of a bilayer of which substances?