Answer:
Option 2
Explanation:
I did not see the video referenced, but an invasive species is not always brought by people. Furthermore generally there are no limiting factors because it has no natural predators in the environment and often uses up all the resources in that particular environment. Hope this helps!
Microorganisms can be divided into two groups:
1. Archea
• Archea are prokaryotic unicellular organisms without cell nucleus or other membrane bound-organelles.
• Their membrane is built from ether lipids, which differs them from bacteria’s cell membrane.
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2. Bacteria
• Bacteria are also unicellular prokaryotic organisms.
• Bacterial cell membranes are made from phosphoglycerides with ester bonds. Bacterial genome is in a form of circular chromosome.
• They reproduce by binary fission or by budding.
Besides, prokaryotes (Archea and Bacteria) a large number of eukaryotes are also microorganisms. Unicellular eukaryotes contain organelles such as the cell nucleus, the Golgi apparatus and mitochondria. Usually, they reproduce asexually by mitosis. An example of eukaryotic microorganism is Protist.
Answer:
- Congress passed the Clean Water Act into law.
- The National Environmental Policy Act was passed, which led to the formation of the EPA.
Explanation:
Tumor-suppresor genes inhibit cell division in the cell-cycle to repair DNA that is damaged or abnormal chromosomes to stop the mutation of such genes which causes pathology in the body.
Answer:
The correct answer would be D. The central nervous system processes stimuli information the body receives, and the peripheral nervous system senses stimuli and carries out the reaction.
Nervous system is made up of highly specialized cells termed as neurons or nerve fibre which are capable of detecting, receiving, and transmitting different kind of stimuli.
It can majorly divide into:
Central nervous system (CNS): It consists of brain and spinal chord which are the information processing and controlling center of the body.
Peripheral nervous system (PNS): It consists of the all the nerves of the body associated with central nervous system. It is composed of two types of nerve fibres: afferent nerves (sense stimuli and carry impulses from tissues to the CNS) and efferent nerves (carry regulatory impulses from CNS to the target tissues).
