BIO 202 ACTUAL TEST PAPER ACCURATE
QUESTIONS AND CORRECT ANSWERS
GRADED APLUS
●● different allés result in different traits because
Answer: the amino acid sequence of the resulting protein is different
●● what are chromosomes composed of
Answer: dna and histone proteins
●● the transport of molecules against a concentration gradient across the
membrane that requies an input of energy is called
Answer: active transport
●● starch and cellulose
Answer: are polymers of glucose
●● which of the following statements is true for lipids
Answer: lipids mix poorly with water
●● how do phospholipids interact with water molecules
Answer: the polar heads interact with water; the nonpolar tails do not
, ●● saturated fats
Answer: contain more hydrogen than unsaturated fats that consit of the
same number of carbon atoms
●● phospholipids and triglycerides both
Answer: have a glycerol backbone
●● Homo sapiens have 23 pairs of chromosomes. this implies that
Answer: 46 double-stranded DNA molecules are present in each somatic
cell
●● which of the following is true of unsaturated fats
Answer: they have double bonds in their fatty acid chains
●● the membranes of winter wheat are able to remain fluid when it is
extrmely cold by
Answer: increasing the proportion of unsaturated phopholipis in the
membrane
●● according to the fluid mosaic model, a membrane
Answer: is composed of a fluid bilayer of phospholipids with embredded
amphipathic protiens
QUESTIONS AND CORRECT ANSWERS
GRADED APLUS
●● different allés result in different traits because
Answer: the amino acid sequence of the resulting protein is different
●● what are chromosomes composed of
Answer: dna and histone proteins
●● the transport of molecules against a concentration gradient across the
membrane that requies an input of energy is called
Answer: active transport
●● starch and cellulose
Answer: are polymers of glucose
●● which of the following statements is true for lipids
Answer: lipids mix poorly with water
●● how do phospholipids interact with water molecules
Answer: the polar heads interact with water; the nonpolar tails do not
, ●● saturated fats
Answer: contain more hydrogen than unsaturated fats that consit of the
same number of carbon atoms
●● phospholipids and triglycerides both
Answer: have a glycerol backbone
●● Homo sapiens have 23 pairs of chromosomes. this implies that
Answer: 46 double-stranded DNA molecules are present in each somatic
cell
●● which of the following is true of unsaturated fats
Answer: they have double bonds in their fatty acid chains
●● the membranes of winter wheat are able to remain fluid when it is
extrmely cold by
Answer: increasing the proportion of unsaturated phopholipis in the
membrane
●● according to the fluid mosaic model, a membrane
Answer: is composed of a fluid bilayer of phospholipids with embredded
amphipathic protiens
