Educational worksheet on differences between prokaryotic and eukaryotic cells.

Let’s go through each question one by one. I’ll explain how to find the answer step by step, so you can understand and learn.

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1. How many species are listed in Table 2?

Look at Table 2 — it has rows for different organisms:
- *Euglena viridis*
- *Spirogyra sp.*
- *Amoeba & Paramecium* (this is two species grouped together)
Wait — actually, looking closely: “Amoeba & Paramecium” is written as one row, but they are two separate organisms. However, in biology tables like this, if they’re listed together under one line, sometimes they’re counted as one entry — BUT the question asks for “species”, not entries.

Actually, let’s count the distinct names:

Row 1: Euglena viridis → 1 species
Row 2: Spirogyra sp. → 1 species (sp. means “species”, so it’s one type)
Row 3: Amoeba & Paramecium → that’s TWO species (Amoeba is one, Paramecium is another)
Row 4: Yeast → 1 species

So total = 1 + 1 + 2 + 1 = 5 species

But wait — maybe the table considers “Amoeba & Paramecium” as one group? Let me check the context. The summary says “Table 2. Number of species...”. And in the table, there are 4 rows. But the third row lists two organisms.

In science, when we say “number of species”, we count each unique organism name. So:

- Euglena viridis → 1
- Spirogyra sp. → 1
- Amoeba → 1
- Paramecium → 1
- Yeast → 1

That’s 5.

BUT — perhaps in this worksheet, they consider “Amoeba & Paramecium” as one item because they’re both protists and maybe being compared together? Hmm.

Looking again at the table structure — it has 4 rows. Maybe the teacher expects 4? But that would be incorrect biologically.

Wait — let’s read the table header: “Organism” — singular per row? No, row 3 says “Amoeba & Paramecium” — so it’s listing two.

I think the correct scientific answer is 5.

But let’s see what makes sense with the rest of the questions.

Alternatively — maybe “Spirogyra sp.” is not a specific species? “sp.” stands for “species”, meaning it’s an unspecified species of Spirogyra — still counts as one species.

Same with others.

I think it’s safe to say 5 species.

But let me double-check: sometimes in such worksheets, they might count rows. There are 4 rows. But row 3 has two organisms.

Perhaps the intended answer is 4? That doesn’t make sense.

Another way: look at question 7 — it mentions “four groups” — which matches the 4 rows.

Ah! Question 7 says: “You have learned about four major eukaryotic groups...”

And in the table, there are 4 rows — even though one row has two organisms, they might be grouping them as one “group” for classification purposes.

But the question is: “How many species are listed?”

Species are individual types.

This is tricky.

Let me think differently. In many school contexts, if a table lists “Amoeba & Paramecium” on one line, they might expect you to count it as one “entry”, but the question says “species”.

To avoid confusion, let’s count the number of distinct organism names mentioned:

1. Euglena viridis
2. Spirogyra sp.
3. Amoeba
4. Paramecium
5. Yeast

That’s 5.

I think the answer should be 5.

But let’s hold that thought and come back after doing other questions — maybe context will help.

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2. What is a difference between plants and animals in their energy acquisition?

Plants make their own food using sunlight — that’s photosynthesis. Animals eat other things — they consume food.

So difference: Plants are autotrophs (make their own food), animals are heterotrophs (eat others).

Answer: Plants produce their own food via photosynthesis; animals obtain energy by consuming other organisms.

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3. Which feature(s) do all eukaryotes share? List three.

Eukaryotes are organisms whose cells have a nucleus and other membrane-bound organelles.

Three shared features:

- Have a nucleus (contains DNA)
- Have membrane-bound organelles (like mitochondria, ER, etc.)
- Are made of one or more eukaryotic cells (not prokaryotic)

Also: they reproduce sexually or asexually, but that’s not universal. Better stick to cellular structures.

Standard answers:

1. Nucleus
2. Membrane-bound organelles
3. Linear chromosomes (or complex cell structure)

For middle/high school level, usually:

- Nucleus
- Organelles like mitochondria
- Cytoskeleton

But simplest: nucleus, organelles, and being multicellular or unicellular with complex cells.

Actually, all eukaryotes have:

- A true nucleus
- Mitochondria (almost all — some exceptions, but generally yes)
- Endomembrane system

For this level, I’d say:

1. They have a nucleus.
2. They have membrane-bound organelles.
3. Their cells are larger and more complex than prokaryotes.

But to list three concrete features:

✔ Nucleus
✔ Mitochondria (for energy production)
✔ Golgi apparatus or endoplasmic reticulum (but maybe too detailed)

Better:

All eukaryotes share:

- A defined nucleus containing DNA
- Presence of organelles enclosed in membranes
- Ability to perform mitosis (cell division)

But for simplicity, common answers are:

1. Nucleus
2. Organelles (like mitochondria)
3. Complex cell structure

I think for this worksheet, acceptable answers are:

- Nucleus
- Membrane-bound organelles
- Larger cell size compared to prokaryotes

But let’s pick three standard ones:

Answer:
1. They have a nucleus.
2. They have membrane-bound organelles (such as mitochondria).
3. They have linear DNA organized into chromosomes.

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4. According to Table 2, which domain do these organisms belong to? Why?

The organisms listed: Euglena, Spirogyra, Amoeba, Paramecium, Yeast.

All of these are eukaryotes — they have nuclei and organelles.

Domains of life: Bacteria, Archaea, Eukarya.

Since they are eukaryotic, they belong to Domain Eukarya.

Why? Because they have cells with a nucleus and other membrane-bound organelles, which defines the domain Eukarya.

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5. Name the kingdom(s) to which these organisms belong based on your observations from Table 2.

Let’s classify each:

- *Euglena viridis*: Often classified in Protista (though some put it in Plantae due to chloroplasts, but traditionally Protist)
- *Spirogyra sp.*: Green algae → Kingdom Protista (sometimes Plantae, but in many curricula, algae are Protists)
- *Amoeba*: Protista
- *Paramecium*: Protista
- *Yeast*: Fungi

So kingdoms represented: Protista and Fungi

Note: Some systems classify green algae under Plantae, but in introductory bio, especially with amoeba and paramecium, they’re all grouped under Protista except yeast.

So answer: Protista and Fungi

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6. According to Table 2, which domain do these organisms belong to? Why?

Wait — this is same as question 4? Probably a typo in the worksheet.

Question 4 and 6 are identical.

Maybe question 6 is meant to be something else? Looking back at user input:

User pasted:

> 4. According to Table 2, which domain do these organisms belong to? Why?
> ...
> 6. According to Table 2, which domain do these organisms belong to? Why?

Yes, duplicate.

Probably a mistake. Perhaps question 6 was meant to be about kingdom or something else.

But as written, same as 4.

So answer same: Domain Eukarya, because they are eukaryotic organisms with nuclei and organelles.

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7. You have learned about four major eukaryotic groups: Animalia, Plantae, Fungi, and Protista. Based on your Answer Sheet, how would you classify Euglena, Spirogyra, Paramecium, Amoeba, and Yeast? Complete the chart below.

We need to assign each to a kingdom.

From earlier:

- Euglena → Protista (has characteristics of both plant and animal, but traditionally protist)
- Spirogyra → Protista (green alga, often placed in Protista in schools)
- Paramecium → Protista
- Amoeba → Protista
- Yeast → Fungi

So chart:

| Organism | Kingdom |
|-----------------|-----------|
| Euglena | Protista |
| Spirogyra | Protista |
| Paramecium | Protista |
| Amoeba | Protista |
| Yeast | Fungi |

Note: Some might argue Spirogyra is Plantae, but since the worksheet includes it with amoeba and paramecium, and calls them "protists" implicitly, Protista is fine.

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8. Write down three groups that distinguish bacteria from fungi. Support your answer with examples from Euglena, Spirogyra, Paramecium, Amoeba, and Yeast.

Bacteria vs Fungi:

Differences:

1. Cell type: Bacteria are prokaryotic (no nucleus); Fungi are eukaryotic (have nucleus). Example: Yeast (fungus) has nucleus; bacteria do not.

2. Cell wall composition: Bacteria have peptidoglycan; Fungi have chitin. Example: Yeast cell wall contains chitin; bacterial cell walls contain peptidoglycan.

3. Nutrition: Bacteria can be autotrophic or heterotrophic; Fungi are heterotrophic absorbers (secrete enzymes, absorb nutrients). Example: Yeast absorbs nutrients; some bacteria photosynthesize.

But the question says “distinguish bacteria from fungi” and support with examples from the listed organisms — but none of the listed organisms are bacteria! Euglena, Spirogyra, etc., are all eukaryotes.

Problem: The organisms given are all eukaryotes, so we can't directly compare to bacteria using them.

Perhaps it's a trick, or misphrased.

Maybe it means: use the knowledge from the table to contrast bacteria and fungi, and mention that the listed organisms are not bacteria.

But let’s interpret: “support your answer with examples from [list]” — but since none are bacteria, perhaps we say that all listed are eukaryotes, unlike bacteria.

Better approach:

Three differences between bacteria and fungi:

1. Cellular organization: Bacteria are prokaryotes (no nucleus); fungi are eukaryotes (have nucleus). Among the listed organisms, Yeast is a fungus and has a nucleus, while bacteria lack one.

2. Cell wall: Bacterial cell walls contain peptidoglycan; fungal cell walls contain chitin. Yeast (fungus) has chitin in its cell wall.

3. Reproduction: Bacteria reproduce by binary fission; fungi reproduce by spores or budding. Yeast reproduces by budding.

And note: None of the organisms in Table 2 are bacteria — they are all eukaryotes, which helps distinguish them from bacteria.

So answer:

- Bacteria are prokaryotic; fungi are eukaryotic. Example: Yeast (listed) is eukaryotic, so not a bacterium.
- Bacteria have peptidoglycan in cell walls; fungi have chitin. Yeast has chitin.
- Bacteria divide by binary fission; fungi by spores/budding. Yeast buds.

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9. In plant sciences, groups like Angiosperms, Gymnosperms, Ferns, Mosses, Algae, etc., are used to classify plants. In animal sciences, groups like Mammals, Birds, Reptiles, Amphibians, Fish, etc., are used. Is yeast a plant or an animal? Explain why or why not.

Yeast is neither a plant nor an animal.

It is a fungus.

Reasons:

- It does not photosynthesize (so not plant)
- It does not move or ingest food like animals
- It absorbs nutrients from environment (saprophytic)
- Has cell wall made of chitin (plants have cellulose, animals have no cell wall)
- Reproduces by budding or spores

So, yeast belongs to Kingdom Fungi, separate from Plantae and Animalia.

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10. You have learned about four major eukaryotic groups: Animalia, Plantae, Fungi, and Protista. Based on your Answer Sheet, how would you classify Euglena, Spirogyra, Paramecium, Amoeba, and Yeast? Complete the chart below.

This is same as question 7.

Probably duplicated.

So same answer:

| Organism | Kingdom |
|-----------------|-----------|
| Euglena | Protista |
| Spirogyra | Protista |
| Paramecium | Protista |
| Amoeba | Protista |
| Yeast | Fungi |

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Now, going back to question 1: How many species?

Given that in question 7 and 10, they list five organisms, and ask to classify them, it implies there are five distinct species.

Also, in the table, although "Amoeba & Paramecium" is one row, it represents two species.

So I think 5 is correct.

Perhaps the worksheet intends 4, but scientifically, it's 5.

I'll go with 5.

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Final Answers compiled:

1. 5
2. Plants make their own food via photosynthesis; animals consume other organisms for energy.
3. - Have a nucleus
- Have membrane-bound organelles
- Have linear DNA in chromosomes
4. Domain Eukarya, because they are eukaryotic organisms with cells containing a nucleus and organelles.
5. Protista and Fungi
6. Same as 4: Domain Eukarya, because they are eukaryotic.
7. Chart:
Euglena - Protista
Spirogyra - Protista
Paramecium - Protista
Amoeba - Protista
Yeast - Fungi
8. Three differences:
- Bacteria are prokaryotic; fungi are eukaryotic. Yeast (from list) is eukaryotic.
- Bacteria have peptidoglycan cell walls; fungi have chitin. Yeast has chitin.
- Bacteria reproduce by binary fission; fungi by budding/spores. Yeast buds.
9. Yeast is neither plant nor animal; it is a fungus. It doesn't photosynthesize, has chitin cell wall, absorbs nutrients.
10. Same as 7.

But since the user might expect concise final answers, and the format requires only final answer at the end, I'll summarize the key answers as per the questions.

However, the instruction is to provide final answer after reasoning, and since there are multiple questions, I need to output all answers.

But the "Final Answer" section should contain the answers to all parts.

Perhaps list them numerically.

Given the complexity, I'll write the final answers clearly.

Note: For question 1, I'm confident it's 5.

Let me confirm with a different angle: in Table 2, the "Number of Species" column is empty, but the organisms are listed. Counting distinct biological species: 5.

Yes.

So here are the final answers: