Biology hard questions. As level before exam

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What are the 4 main factors affecting transpiration rate?
Light/ temperature/ humidity/ wind
1 of 6
What are the functions of the xylem and phloem tissues?
Xylem- transports water and mineral ions in solution Phloem- transports organic substances like sugars both up and down the plant
2 of 6
What is transpiration?
Transpiration is the evaporation of water from a plants surface
3 of 6
explain how the leaves of the plant can act as a source in translocation?
Leaves can act as a source because they are a part of a plant where solutes/products of photosynthesis are made
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Describe how DNA is stored in eukaryotic cells?
In the nucleus of eukaryotic cells, DNA is stored as chromosomes. It is linear. It is wound around proteins called histones. Mitochondria and chloroplasts also contain DNA
5 of 6
What is the role of tRNA in translation?
Reads the mRNA strand/ base pairs with codon / to determine which order the amino acids should be attached
6 of 6

Other cards in this set

Card 2

Front

What are the functions of the xylem and phloem tissues?

Back

Xylem- transports water and mineral ions in solution Phloem- transports organic substances like sugars both up and down the plant

Card 3

Front

What is transpiration?

Back

Preview of the front of card 3

Card 4

Front

explain how the leaves of the plant can act as a source in translocation?

Back

Preview of the front of card 4

Card 5

Front

Describe how DNA is stored in eukaryotic cells?

Back

Preview of the front of card 5
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