A student investigated the diffusion of substances through Viking tubing, an artificial membrane
which has some of the properties of cell membranes.
The student made a bag of Visking tubing as shown in Fig. 4.1. The student added some iodine solution to the water in the test-tube
After 30 minutes at room temperature, the contents of the Viking bag were stained blue-black, but
the water outside remained a yellow colour

Match the following terms and definitions. 1. transcription when genes are neither dominant nor recessive and display a blending of traits in the phenotype 2. translation converting the genetic code into the language of proteins 3. monohybrid cross genes that are carried on the x chromosome 4. incomplete dominance the transfer of genetic code from dna to an rna molecule 5. sex-linked genes the breeding of two organisms which differ in a single trait

What best describes the dropping height of a ball that bounces back up to a height of 45 cm

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.