Atoms gain electrons to form anions.
Atoms lose electrons to form cations.
Back in middle school, my chemistry teacher taught me a good way to remember whether an ion was a cation or an anion. When an atom loses an electron, it becomes positive, and when an atom gains an electron, it becomes negative.
Cation sort of sounds like “cat,” which is positive (Yay! Cats!).
Anions, on the other hand, sounds like “onion,” which is negative (Ew! Onions!).
There’s other ways of memorizing it, but this way was the easiest for me.
-T.B.
<span>you had some missing info...BUT, you are in luck, because I just took that test a few days ago.
Here is your answer:
</span><span>A.The molecule that carries information from the DNA specifying a polypeptide to ribosomes.
B. The synthesis of an RNA copy of a gene.
C. The synthesis of a specific sequence of amino acids on a ribosome.
D. A molecule found in the nucleus of cell that contains the cell's genome.
E. A molecule made of amino acids that correspond to the genetic information in a structural gene.
</span><span>A. mRNA
B.Transcription
C.Translation
D.DNA
E.Polypeptide</span><span>
</span>
Replication of DNA is basically copying DNA.
The possible answers are
<span>A.a drought reduces the toad population </span>
<span>B. an influx of soil nutrients results in increased grass growth </span>
C.a hawk species moves in that hunts toads
<span>D.the toad population increases after a warm, wet spring
The correct answer is D
The increase in numbers in the toad population after a warm and wet spring would mean that there are more toads that prey on the beetles and that they are limiting the beetle population by hunting them.</span>
Answer:
If the man has blood type A one of whose parents had blood type O then he must be having the genotype IAi and the woman with blood group AB would have genotype IAIB. So if they produce offspring than the putative genotype of the offspring would be IAIA, IAi, IAIB, and IBi.
IA i
IA IAIA IAi
IB IAIB IBi
Therefore out of four offspring, two offspring would be having A blood group, one offspring would have AB blood group and one offspring would have B blood group.
