Answer:
1. Autotrophs
2. The Sun
3. Consuming Other Organisms
Answer:
prokaryotic cells do not have a nucleus or membrane bound organelles.They also have small rings of double-stranded extra-chromosomal DNA called plasmids.
A tropical forest is a type of biome that shows a little or no change of season throughout the year.
<h3>What is Biome?</h3>
A biome may be defined as a very large area or an ecosystem that is characterized by a particular type of vegetation. Examples include Tropical rainforests, Grasslands, Coral reefs, etc.
Tropical forests include rain forests, dry forests, grasslands, and savannas. The dominant plants which are found in these tropical forests are phanerophytes, epiphytes, lianas, etc.
This biome consistently faces almost the same average intensity of sunlight throughout the year. Hence, the temperature fluctuation in this biome is very mild.
Therefore, a tropical forest is a type of biome that shows a little or no change of season throughout the year.
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Answer:
E2F transcription factors
Explanation:
The E2F transcription factors (TFs) encode intracellular factors associated with the control of the cell cycle. E2F are TFs that bind to promoter consensus sequences in order to activate transcription. These TFs control the expression of target genes involved in cell proliferation including, among others, genes for DNA replication and mitotic activation. Moreover, the E2F proteins also may act as a link between cell fate and the cell cycle. The retinoblastoma (Rb) is a protein that modulates the activity of the E2F family of TFs, and it has been shown that the Rb/E2F pathway is a key molecular mechanism associated with cell proliferation.
The answer is False. The mediastinum is not a cartilage that
forms the lower portion of the breast bone, the mediastinum is the middle part
of the chest cavity, which is located between the lungs of an individual. The
Mediastinum is the area located between the lungs, it contains organs such as
the heart and its large arteries and veins. It may also include the trachea,
the esophagus, the bronchi and last but not the least the lymph nodes.
