With sufficient stimulation, mature sperm<span> travel </span>from<span> the epididymis </span>through<span> the vas deferens, a muscular tube, which propels </span>sperm<span> forward </span>through<span> smooth muscle contractions. I hope this helps :D</span>
Answer:
Replication proceeds in both directions from a single origin of replication.
Explanation:
The origin of replication is the DNA sequence where the process of DNA replication begins. Prokaryotes such as <em>E. coli</em>, mostly have smaller genome sizes as compared to the eukaryotes and have a single origin of replication. The DNA helicases serve to unwind the DNA at the origin of replication and create replication forks.
The origin of replication is an AT-rich sequence where DNA is easily denatured to produce single strand bubbles or the replication loops. Both the separated DNA strands are replicated simultaneously. The replication is bidirectional which means that both ends of the separated DNA loop have active replication forks. The process of DNA replication continues until both the replication forks meet to replicate the complete DNA.
Hello, I figured that the question was missing its options so I went online to find them. Here they are:
All of the following are true of the thymus gland, except that:
A) activates B cells.
B) reaches its greatest relative size during the second year of life.
C) involutes after puberty.
D) produces T cells.
E) lies in the anterior mediastinum
Answer:
The correct answer is: A) activates B cells.
Explanation:
The thymus is a lymphatic organ that is located in the anterior superior mediastinum (a compartment in the thoracic cavity), in front of the heart, with the function to mature T cells (one of the types of lymphocytes, white blood cells very important for the functioning of the immune system).
The thymus is more active and bigger during childhood, when puberty hits it involutes and its functional tissue is replaced with adipose tissue (fat).
<u>B cells are not activated in the thymus, they mature in the bone marrow</u>.
Communism in a command market. <span />
Answer: Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants (Figure 5.5). After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.
HOPE THIS HELPS
