The light reactions of photosynthesis supply the Calvin cycle with (d) ATP and NADPH.
Light reactions are photochemical reactions which are directly driven by light. They are responsible for the synthesis of ATP as well as NADPH.
Light reactions take place in the membranous system that is present within the chloroplasts. The membrane system consists of grana, the stromal lamellae and the matrix stroma.
The products of light reaction include ATP, NADPH as well as O₂. However, ATP as well as NADPH are used in driving the processes which result in the production of sugars, whereas O₂ diffuses out of the chloroplast.
To learn more about light reactions here
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If a scientist observes an enzyme polypeptide chain arranged in spiral turns that rise upward and are held in place by hydrogen bonds he/she is looking at a tertiary structural arrangement.
Answer:
A. is correct. Ra - rv - L - la - lv - b
Explanation:
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The answer is definitely B. Host
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Answer:
O Vestigial organs show that whales may have evolved from a common ancestor shared with land-dwelling animals
Explanation:
Vestigial organs are defined as the organs which are no longer beneficial for survival.
Whales can be observed with tiny, unused hip and pelvis bones which are vestigial organs for them as they are no longer beneficial for their survival. The vestigial organs are the evidence of evolution in organisms and in whales also these vestigial organs says that whales and land-dwelling animals may have common ancestors. Later on with evolution some land-dwelling animals might move to water systems and hip and pelvis bones become vestigial organs for them which along with time decreasing in the future offspring.
Hence, the correct answer is "Vestigial organs show that whales may have evolved from a common ancestor shared with land-dwelling animals".
