30 pts please help: What could you detect using a magnet and iron filings?

Where is the pushing a pulling force of a bar magnet strongest?

Two magnetic poles that are the SAME each other

What does repel mean?
a. Magnets move towards each other
b. Magnets move away from each other
c. Magnets lose their magnetic pull

Which element is responsible for the magnetic force?
Iron
Gold
Aluminum

Does distance strengthen or weaken a magnets ability to attract?
(also has a make no difference option)

Which of these is NOT used to create a simple electromagnet?
Battery
Light Bulb
Copper wire

In an atom the electrons and protons are located in the nucleus True or False

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?