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An electronics company is hiring a part-time programmer to better calibrate one of its electronic devices. Four candidates for the position have stated how long it would take them to complete the project and what their hourly fee would be.

A 3-column table with 4 rows. Column 1 is labeled Programmer with entries Yogin; Amaya; Candice; Sheldon. Column 2 is labeled Fee per Hour with entries 40 dollars; 35 dollars; 32 dollars; 45 dollars. Column 3 is labeled Total Time with entries 12; 10; 15; 8.
Which programmer would be the most cost-effective choice for completing this project?
A homozygous yellow seeded plant is crossed with a heterozygous yellow seeded plant what will be the genotypes and phenotypes of the offspring?


 

QUESTION 5: PAIN

Draw a schematic diagram of the spinothalamic pathway and annotate it by indicating where and how the different drugs work.                                        (10)

Root cells in a plant completely lack chloroplasts, whereas leaf cells have many chloroplasts. Which difference will be seen in these two types of cells?



What is the effect of climate change on primary production of terrestrial ecosystem


Draw the structure of lac operon and its action when the following conditions are prevailing in the media: increased glucose, low glucose, higher c-AMP, low c-AMP, higher glucose, and high c-AMP, low glucose and High c-AMP, Higher glucose and higher allolactose?


Why was the belief in spontaneous generation an obstacle to the development of microbiology as a scientific discipline.
(c) A housewife immerses slices of mango in concentrated

sugar solution for preservation.

Explain why the mango slices can be kept for a longer period.

[3 marks]

(d) Explain why an athlete is advised to take an isotonic drink after a long distance run.
2. Diagram 2.1 shows the condition of a plant cell after been immersed in solution X for 30 minutes. Rajah 2.1 menunjukkan keadaan satu sel tumbuhan selepas direndam di dalam larutan X selama 30 minit.

Diagram 2.1 Rajah 2.1

(a) (i) Based on Diagram 2.1, name the condition of the cell. Berdasarkan Rajah 2.1, namakan keadaan sel itu.

(ii) Explain your answer in (a)(i). Terangkan jawapan anda di (a)(i).

[1 marks] [1 markah]

In a particular species of plant, tall is dominant to short, and orange petals are dominant to the recessive white colour. Use T and t to symbolize the alleles for height, and F and f to symbolize the alleles for flower colour. A homozygous tall white flower is crossed with a flower heterozygous for both traits.

1.1 List the genotypes of the parents. 


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