The following statements relate to typical nuclear division in human cells:1 mitosis results in variation within the species2 meiosis results in the production of genetically identical cells3 mitosis results in…
In mice the recessive form of a gene causes the death of the fetus if present in the homozygous state. Mice heterozygous for this gene were crossbred. What percentage of…
The following statements are about hormone levels and their effect:1 Increasing levels of insulin cause an increase in blood glucose levels.2 Increasing levels of oestrogen increases the thickness of the…
The three statements below are about exhaling.1 The ribs swing down and inwards during exhaling.2 The diaphragm muscles contract during exhaling.3 The pressure in the lungs increases during exhaling.Which statements…
Listed are the electronic configurations for the atoms of different elements. Which one represents the most reactive non-metal? Answer: 5) C As you go along a period, reactivity of non-metal…
Smoking cigarettes can lead to emphysema. This occurs because. Answer: 5) A Emphysema is a condition in which lungs and air sacs are damaged, causing breathlessness. Breathlessness is caused by shortage…
During the electrolysis of hydrochloric acid, positively charged hydrogen ions move towardsthe cathode at a rate of 1018 ions per second. Negatively charged chloride ions movetowards the anode at the…
The colors of three indicators are shown. Equal volumes of these three indicators were mixed and the mixture was added to a solution of pH 5.0. What color would be…