I would say "B', as polar bears don't actually have to get in water at all!
The correct answer is option D, that is, mitochondria and chloroplasts.
Mitochondria and chloroplasts are the two organelles witnessed in the eukaryotic cells. The majority of eukaryotic cells exhibit mitochondria, while chloroplasts are only found in plants.
Apart from the nucleus, mitochondria and chloroplasts are the only organelles that comprise their own genetic material. They both possess their own DNA, and therefore, both the organelles utilize their own DNA to generate various enzymes and proteins needed for their normal functioning.
The name for the protective structure that forms around and embryo is called an placenta
Answer:
This question lacks options, they are:
a)Cold forest
b)Tropical forest
c)Temperate forest
d)Cloud forest
e)Alpine forest
The answer is B. Tropical forest
Explanation:
Tropical forest is one of the forests found in nature. The tropical forest receives the best environmental conditions in terms of vegetation growth. Hence, it is said to contain the most diverse organisms in nature. This means that tropical forests holds more species of terrestrial organisms than any other forest or biome.
Therefore, tropical forests are believed to contain 50% of the Earth's terrestrial plants and animal species due to their biodiversity richness.
Answer:
Gene regulation in eucaryotic cells represents mechanisms that influence gene expression.
Explanation:
This gene expression is regulated via repressors or activators of transcription.
Gene expression is a process that contains information from a transcript gene and translates it into a functional gene product. End products of gene expression are proteins.
Gene regulation is a process that cells and viruses are using to regulate the transformation of gene information into gene products.
Transcription factors are those proteins that regulate gene transcription. Those factors help the real genes to enter the right cells in the body.
The expression of eukaryotic genes is controlled by transcription. This transcription is controlled by proteins that are connecting to regulatory sequences and change the RNA activity. Gene regulation process is developed by combining different proteins of regulation.
