Question:- Intensity of sound has A. an object existence B. a subject existence C. no existence D. both subjective and objective existence
Answer:- Option A
Question:- Plants receive their nutrients mainly from A. chlorophyll B. atmosphere C. light D. soil
Answer:- Option D
Question:- Movement of cell against concentration gradient is called A. osmosis B. active transport C. diffusion D. passive transport
Answer:- Option B
Question:- Is active transport only against the concentration gradient?
Answer:- Active transport, this is the only transport method that can move species against their concentration gradient (from low to high concentration). Facilitated diffusion only moves species down their concentration gradient from high to low concentration.