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from my answer sheet, it is C

yeah idk :/ but i dont think natural selection is a "response" tho.

Question: In a species of plants there are three possible flower colours: red, blue and purple. When plants with red flowers are crossed with plants with purple flowers the resulting offspring have either red flowers or purple flowers. What is this mode of inheritance called? A) Sex linkage...

yep that's correct

Here is a question: Evolution: A) is a gradual change in the chemistry of the environment B) is a gradual change in the physical makeup of the environment C) is the response of organisms to changes in the environment where the fittest survive D) was invented by Charles Darwin and has been in...

For this subject: Deep understanding of dotpoints + past papers = band 6. Memorising dotpoint content + past papers = band 5. (doing past papers includes looking at the MARKING GUIDELINES!)

lol i didnt know cytotoxic T cells can become memory T cells. hmm pretty interesting

Do T cells or T helper cells become memory T cells? I am not sure :(

Feshwater fish's gills are impermeable to water

Yeah i just found that macrophages do exist in the lymph nodes too !

Never mind i got it now :)

Can someone confirm whether phagocytosis occurs in the lymph nodes? From what i have read so far, only B and T lymphocytes are located in the lymph nodes and not phagocytes (which can perform phagocytosis).

Yeah same with the notes that i found.. only mentions that artifical blood cost more than using donated blood but doesn't provide any further justification. However, after reading your reasoning, i think you could be right with the high cost of dobated coming from getting it sorted into its...

Nice man band 6 responses (imo) right there :). By the way, what does it mean by artificial blood is cheaper to synthesis compared to using real blood? why is there a cost for using real blood? :o

Cohesion refers to attraction of water molecules and adhesion refers to water molecules attracting to the lignin walls that makes up the xylem tubes. ;)

thank you :D

i agree with bluegas :)

Induction motorrr

Question: how are stem cells produced in our body?

A pulse oximeter is an instrument that can be used to measure the oxygen saturation levels in the blood. It can be clipped onto a finger and, by passing a beam of infrared light through the finger, the amount of infrared light absorbed can be used to measure the saturation level of harmoglobin...