Answer:
Gas exchange between tissues and the blood is an essential function of the circulatory. The air contains oxygen that crosses the lung tissue, enters the bloodstream, and the alveoli are in direct contact with capillaries of the circulatory system. As water flows over the gills, oxygen is transferred to blood via the veins.
Explanation:
Answer:
DNA helicase separates the two strands of DNA at a replication fork.
Explanation:
To allow DNA replication, two DNA strands should be separated to serve as a template strand. DNA helicases are the enzymes that separate the two parental DNA strands in an energy-dependent way. DNA helicases move along the DNA and separate the two strands by breaking the hydrogen bonds between the complementary base pairs of two DNA strands. The energy released from ATP hydrolysis is used to break the hydrogen bonds.
Answer:
Alleles are passed from the parents' sex chromosomes to the sex chromosomes in the offspring.
Explanation:
Sex-linked traits are simply traits that are associated, or found with, a particular sex chromosome (so X or Y). The way that alleles are passed down is through fertilization, but before that, the actual gametes (sex cells) involved in fertilization have to be synthesized. And because a sex linked trait is linked with a particular sex chromosome, that trait gets put into a gamete with that sex chromosome and is in turn passed down to the sex chromosomes of the offspring.
Through partial melting of the subducting slabs
1) The main difference between a prokaryotic cell and a eukaryotic cell isD) the presence of a true nucleus.
2) Which type of cell contains DNA enclosed in a nucleus?
C) plasmid
3) Viruses CANNOT
B) live in bacteria.
Hope this helps.
