A) organelles are the "organs of a cell"
B) metabolism is an organism's energy
C) homeostasis is a status of balance or equilibrium in an organism
D) I'm pretty sure you know what a cell is
Answer:
<u>The heavier the hummingbird, the fewer times its wing will beat per second. </u>
Explanation:
There is a negative slope in a graph respective to the components of the x and y axis. Therefore, heavier the hummingbird -> less beats per second.
Answer:
Correct, DNA is a negatively charged nucleic acid. This is because the phosphates present in the sugar-phosphate backbone are negative and hence, make the DNA acidic. That is why DNA is called deoxyribonucleic acid
In tests like gel electrophoresis, the DNA will move towards the positive end of the gel. This is because positive attracts the negative. A DNA sample can be separated on the basis of the negativity it possesses.
Sister chromatids have different alleles although carry same genes on same loci. So if it doesn't happen so, like if there are same alleles on sister chromatids then there is a problem in its formation. i.e., male and female alleles haven't contributed equally ( may be an error during their segregation process ). And obviously it doesn't happen in a real cell so we must understand this point. Because normally whenever it happens there's one half from the male and one half from the female. (i.e. maternal and paternal alleles contribute equally).
I hope you get the answer!!!