21. A is the right answer because of the protein membrane active transport goes against but
facilitated with the ions and the protein it goes with the gradient.
22. b
The bag counts as a way that the starch can go through it, so the starch will go in and mix with
the ion creating a chemical reaction causing the solution inside the bag to go back and the
solution turn light yellow orange
23. D
During the S phase the or interphase the cell is getting ready to replicate.
24. D
There is a equal concentration of the molecule on both sides.
25. B Transcription has to be first in order for dna to translate to mrna, the mrna has to
transport the information to the ribosome, then amino acids have to be assembled by the
codon sequence of the mrna then protein forms and detaches from the ribosome.
26. A
It is B ecause it goes up due to the cell replicating so the volume is bigger then when it divides it
gets it’s normal size.
27. D
It is D because prokaryotes don’t have a nucleus.
28. A
ATP is a product of celluar respiration.
29. b
B is right because with the pairing of the bases there can’t be protein
30. a
A is right because they are the opposites of each other.
31. A
Ethanol is created when there is absence of oxygen with yeast and latic acid is produce when
there is an absence of oxygen in muscle.
32. B
Oxygen is a catylist of celluar respiration and carbon dioxide is one of the bioproducts.
33. B because h2o is a catylist and oxygen is a biproduct of light independent reations.
34 A
It lacks the mitochondria which cause them to only survive with a host and surviving without a
host is one of the factors of a living thing.
35 a
7 and 9 show the lines which represents the chromatids separating.
1.d
The molecules itself are not different but their dna is slightly different.
2. B
The dna comes is from the nucleus and it replicates in the nucleus then goes to the
mitochondria for celluar replication.
3. c
Down Syndrome is trisomal mutation, therefore there is three chromosomes instead of two.