Question

cell structure and function
part a: assessments

1. label the cellular structures in figure 5.4.

(a)
figure 5.4 label the indicated cellular structures of the (a) illustration of a composite cell and (b) an image of a cell model,
using the terms provided for (b) only.

Explanation:

To solve this problem of labeling the cellular structures, we analyze the typical components of a eukaryotic cell (likely an animal cell with some features like microvilli at the apical surface):

Step 1: Identify Structure 1

Structure 1 appears as small dots (ribosomes) or possibly a vesicle? Wait, no—looking at the typical cell diagram, 1 is likely a ribosome (or maybe a lysosome? Wait, no, let's recall:

Wait, the diagram has:

• 1: Small circular structure with dots—likely ribosome (or maybe a lysosome? No, lysosomes are larger. Wait, maybe 1: Ribosome (or if it’s a vesicle, but more likely ribosome or maybe a lysosome? Wait, no, let's list standard cell structures:

Step 2: Structure 2

Structure 2 is a larger vesicle-like structure—likely a lysosome (contains digestive enzymes) or a secretory vesicle.

Step 3: Structure 3

Structure 3 is the stacked green structure—Golgi apparatus (modifies and packages proteins).

Step 4: Structure 4

Structure 4 is inside the nucleus (purple), the small dark dot—nucleolus (produces ribosomal RNA).

Step 5: Structure 5

Structure 5 is the red, oval structure—mitochondrion (produces ATP, energy).

Step 6: Structure 6

Structure 6 is the blue, folded membrane near the nucleus—rough endoplasmic reticulum (RER) (has ribosomes, makes proteins).

Step 7: Structure 7

Structure 7 is the blue, folded membrane without visible ribosomes—smooth endoplasmic reticulum (SER) (lipid synthesis, detoxification).

Step 8: Structure 8

Structure 8 is the dark line at the cell boundary—plasma membrane (or cell membrane, controls entry/exit).

Assuming standard labels (since the figure is a composite animal cell with microvilli at the apical surface):

1. Ribosome (or maybe a lysosome, but ribosomes are small dots; if it’s a vesicle, maybe a transport vesicle)
2. Lysosome (or secretory vesicle)
3. Golgi apparatus
4. Nucleolus
5. Mitochondrion
6. Rough Endoplasmic Reticulum (RER)
7. Smooth Endoplasmic Reticulum (SER)
8. Plasma Membrane

(Note: Without the exact "terms provided" for part (b), this is based on typical cell structure labeling. If terms were given, we’d match them, but since they’re not, we use standard cell biology labels.)

Answer:

1. Ribosome (or Lysosome/Transport Vesicle, depending on context)
2. Lysosome (or Secretory Vesicle)
3. Golgi Apparatus
4. Nucleolus
5. Mitochondrion
6. Rough Endoplasmic Reticulum (RER)
7. Smooth Endoplasmic Reticulum (SER)
8. Plasma Membrane

(Adjust based on the specific terms provided for labeling, but these are the standard identifications for such a cell diagram.)