Question

1. Which of the components could be observed using a microscope in a prepared slide of "Leaf" epidermal cells but not in a prepared slide of "human" cheek cells?
Cells-
1. Cytoplasm 2. nucleus 3. chloroplasts 4. Cell wall 5. Cell membrane

A. Component 2 and 3 only
B. Component 3 and 4 only
C. Components 1, 2, and 3 only
D. Components 1 and 5 only


2. According to FDA, "FDA and EPA continue to recommend that no more than six ounces of fish per week (of your 8 to 12 ounces weekly) should be white (albacore) tuna. Although canned light tuna is lower in mercury, albacore tuna has more of it...and if you or someone you know goes fishing in a lake, stream, or river, follow local fish advisories. If local advice isn't available, you should eat six ounces or less of these locally caught fish per week, and children should eat no more than one to three ounces per week. Then avoid eating other fish for the rest of the week." Why are these advisories in place?

A. Biofragmentation leads to higher toxicity in tuna
B. Bioluminescense leads to higher toxicity in tuna
D. Biomagnification leads to higher toxicity in tuna
C. Biostratification leads to higher toxicity in tuna


3. A student groups different types of cells as shown in the image up above. Which table headings should the student use for the two groups?

A. 1. Animal cells 2. Plant cells
B. 1. Prokaryotic cells 2. Eukaryotic cells
C. 1. Mobile cells 2. Motile cells
D. 1. Fungal Cells 2. Bacterial Cells



(Please if you don't know the answer and all you say in the comments is "idk" then don't comment unless you actually have what you believe the answers are, just try your best please, thank you)

Answer 1

1. The correct answer is option (B) Component 3 and 4 only. The difference between the plant cell and an animal cell is the presence of the cell wall and the plastids called the chloroplasts in the plant cells. Cytoplasm is the jelly like substance present in both the plant cells and animal cells. Nucleus is the brain of the cell regulating the metabolic activities of the plant and animal cell. Cell membrane is the semi-permeable membrane covering all the cells.

2. The correct answer is option (D) Biomagnification leads to higher toxicity in tuna. Biomagnification is the accumulation of toxic substances at different tropic levels of the food chain. Fishes are a target of biomagnification due to the intake of the methyl mercury in them.

3. The correct answer is option (B) 1. Prokaryotic cells 2. Eukaryotic cells. The image 1 is a prokaryotic cell and the image 2 is a eukaryotic cell. Prokaryotes are the cells with primitive nucleus. They do not have a well-defined nucleus and the membrane bound organelles. Eukaryotes are the cells with a well-defined nucleus and all the membrane bound organelles.