Which option correctly completes the fact: which cells help defend the body against infection?

✅ B. Cell membrane

a: Cell wall only | b: Cell membrane | c: Chromosome | d: Nucleolus Read more

✅ B. 200

Option A: 100 Option B: 200 Option C: 3000 Option D: 4000 Correct Answer : 200 Read more

✅ A. Cell

a: Cell | b: Organ | c: Organ system | d: Tissue Read more

✅ C. Iris

a: Optic nerve | b: Retina | c: Iris | d: Cornea only Read more

✅ A. Mitochondrion

a: Mitochondrion | b: Lysosome | c: Golgi apparatus | d: Ribosome Read more

✅ A. Vitamins

Option A: Vitamins Option B: Carbohydrates Option C: Proteins Option D: Metals Correct Answer : Vitamins Read more

✅ A. cuscuta

Option A: cuscuta Option B: rose Option C: ferns Option D: mosses Correct Answer : cuscuta Read more

✅ D. Oxygen

Option A: NADH Option B: Cytochrome a3 Option C: Water Option D: Oxygen Correct Answer : Oxygen Read more