Animal cells need oxygen most directly to: A) Produce ATP B) Secrete enzymes C)
ID: 274083 • Letter: A
Question
Animal cells need oxygen most directly to: A) Produce ATP B) Secrete enzymes C) Produce DNA D) Produce protein s need 34. Osmosis is water movement from: A) Hypotonic environment to a hypertonic environment C) Low free-water solution toward a high free-water D) Solution with more salt to a solution with less salt solution 35. Prokaryotic cells include A) Bacteria and animal cells a) Bacteria and plant cells C) Bacteria and Achaea D) Achaea and fungi 36. Prokaryotic cells lack: A) DNA B) Proteins C) Internal compartmentalization D) Ribosomes 37. What do wax and testosterone have in common? A) They are both hormones B) They are-both proteins C) They are both steroids D) They are both lipids 38. Chitin and cellulose are examples of: A) Structural polysaccharides B) Storage polysaecharides C) Monosaccharide D) Disaccharides A) This statement is true because water moves by diffusing up a gradient B) This statement is true because water moves osmotically up a concentration 39. Water tends to move up a concentration gradient (Not reviewed)? gradient C) This statement is false because water diffuse down concentration gradient D) This statement is false because water moves osmotically down concentration gradient 40. When molecules dfise asieckx across plasma membrane, some energy is expended (Not reviewed):Explanation / Answer
33. The answer is A) Produce ATP.
In animals the main source of ATP is aerobic respiration, and the oxygen acts as a termial electron acceptor during this, and leads to the formation of ATP.
34. The answer is A) Hypotonic environmen to a hypertonic environment.
The moment of solvent molecules from low concentrated environment (hypotonic) to high concentrated environemnt (hypertonic) through a semi permeable membrane is called osmosis.
35. The answer is C) Bacteria and Archea.
Because the organism which belongs to these two classes doesnot have any distinguishble nucleus.
36. The answer is C) Internal comparatmentalization such as cell organalles etc.
37. The answer is C) They are both steroids.
38. The answer is A) Strucutral polysaccharides.
Chitin acts as a structural component in fungus where as the cellulose acts as a structural component in plant cellwall.
39. The answer is B) This statement is ture because water moves osmotically up a concentration gradident.