B , because there is more than one path of energy coming from the plants but if it’s not B then it’s A because arrows that are all over the place is what makes it a web
Answer:
The heart valves
Explanation:
The heart valves prevent blood from flowing in the wrong direction in the heart. The valves are held in the proper place because of the chordae tendinae.
I think the correct answer from the choices listed above is the first option. The sequence that is arranged from the simplest one to the most complex would be:
<span>squamous cell → epithelial tissue → skin → integumentary system → human
</span>
The sequence should start with a single cell, group of cells which makes a tissue, group of tissue, system and the whole body.
Answer:
BRCA1 and BRCA2 genes
Explanation:
The BRCA1 and BRCA2 genes are tumor suppressor genes that encode breast cancer susceptibility proteins involved in repairing double-strand DNA breaks (DSBs) by the mechanism of homologous recombination. This mechanism uses the sister chromatid of the homologous chromosome as template for repairing DSBs. It has been shown that mutations in BRCA1 and BRCA2 genes alter the molecular mechanism of homologous recombination DNA repair, thereby mutations are not repaired appropriately and persist in the DNA of tumor cells.
<span>Flowering plants (angiosperms) have a more reliable method of pollination than gymnosperms. Flowering plants use animals and insects while gymnosperms rely on wind for pollination. </span>
