Author Archives: Anonymous
3.1.4 Anne and Mike want to have another child. Draw a gen…
3.1.4 Anne and Mike want to have another child. Draw a genetic diagram to show a cross between Anne and Mike. Include all the required steps and labels, plus the phenotype and genotype results and their ratios.Note: Diagrams must always be drawn by hand. Scan or take a clear photo of your diagram and upload it in this question, using the button below. (10)
Read Details2.2 Read the following article and answer the questions th…
2.2 Read the following article and answer the questions that follow: New bean varieties bred to beat the heat March 26 2015 at 12:11pm Scientists have bred 30 new varieties of “heat-beating” beans designed to provide protein for the world’s poor in the face of global warming. Described as “meat of the poor”, beans are a key food source for more than 400 million people across the developing world, but the area suitable for growing them could drop 50 percent by 2050 because of global warming, endangering tens of millions of lives, scientists said. Some of the 30 new types also have higher iron content to help increase their nutritional value, CGIAR, the research group backing the new discoveries, said in a statement. New heat-tolerant beans might be able to handle average global temperature increases of 4 degrees celcius. Bean growers in Latin America and sub-Saharan Africa – including Nicaragua, Haiti, Brazil, Honduras, Kenya, Tanzania, Uganda, and the Democratic Republic of Congo – are likely to be the worst hit by global warming, researchers said. Some of these countries, dependent on small farmers to feed themselves, are not in good positions to adapt to a warming planet. Clayton Campanhola, director of plant production and protection at the U.N. Food and Agriculture Organization, said the discovery of new “climate-smart” bean strains is a big deal. Adapted from: New bean varieties bred to beat heat (2021). Available at: https://www.iol.co.za/news/new-bean-varieties-bred-to-beat-heat-1837457 (Accessed: 21 June 2021).
Read Details1.3 Organisms are classified according to specific classi…
1.3 Organisms are classified according to specific classification schemes. Order the classification levels below starting with the least specific level to the most specific level: [A] (least specific) [B] [C] [D] [E] [F] [G] (most specific) (7)
Read DetailsSECTION A QUESTION 1 1.1 Ten multiple-choice questions…
SECTION A QUESTION 1 1.1 Ten multiple-choice questions are given below. Choose the most correct answer for each. 1.1.1 The diagram below shows part of a DNA molecule. CLICK ON THE BUTTON BELOW TO VIEW THE DIAGRAM: The correct labels for X, Y, and Z are: A. deoxyribose sugar, phosphate, and hydrogen bondB. phosphate, deoxyribose sugar, and hydrogen bondC. ribose sugar, nitrogenous base, and peptide bondD. phosphate, ribose sugar, and peptide (2)
Read Details1.3 Indicate whether each of the statements in COLUMN I ap…
1.3 Indicate whether each of the statements in COLUMN I applies to A ONLY, B ONLY, BOTH A and B, or NONE of the items in COLUMN II. COLUMN I COLUMN II 1.3.1 High CO2 levels in the blood will stimulate the brain’s… A respiratory centre. B cardiovascular centre. 1.3.2 Low water levels in the blood will lead to… A more ADH secreted by the hypothalamus. B less water reabsorbed from the filtrate. 1.3.3 High salt concentration in the blood will lead to… A the stimulation of the adrenal gland. B more aldosterone secreted in the blood. 1.3.4 A decrease in temperature will lead to… A blood being redirected to the surface of the body. B vasoconstriction. 1.3.5 Low thyroxin levels in the blood will lead to… A the pituitary being stimulated to secrete more TSH. B the thyroid gland producing less thyroxin. 1.3.6 Low glucose level in the blood will lead to… A the pancreas secreting glucagon. B glycogen converted to glucose. 1.3.1 [1] 1.3.2 [2] 1.3.3 [3] 1.3.4 [4] 1.3.5 [5] 1.3.6 [6]
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