An example of an organism with a genetic variation that could improve survival chances over time would be an ant that is resistant to pesticides (Option A)
Genetic variation refers to differences in the genetic material (DNA) among individuals within a species. This can arise due to several mechanisms, including mutation, recombination, and genetic drift. Genetic variation provides the basis for evolution by natural selection, as it allows for populations to adapt to changing environments and helps to ensure the survival of the species over time.
Genetic variation can also play a role in disease resistance, as some individuals may carry genetic variations that protect them from certain diseases. Additionally, genetic variation can impact physical and behavioral traits, such as eye color, height, and intelligence.
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Answer:Cell membrane
Explanation:Forms a boundary between a cell and the surrounding environment and controls the passage of materials into and out of the cell.
Answer:
Cell Membrane (These are from my personal Biology Notes)-
Explanation:
Found in all cells (FIAC)
Selectivity permeable
Embedded with proteins
Regulates what enters or exits the cell
Phospholipid bilayer
Polar: head is hydrophilic (Likes water)
Nonpolar: tail; hydrophilic
Breathing trouble
Cancer
Respiratory infection
Answer:
The correct answer is option , Breathing trouble
Explanation:
Opioids are narcotics that are prescribed by doctor during surgeries but addiction to its continued usage may result into weakening heart beats and slow breathing. The breathing issue arises when specific opioid receptor in the central nervous system (CNS) gets activated thereby affecting the respiratory rhythm. The respiratory rhythm in the CNS is controlled by pre-Bötzinger complex. Opiods also affects the functioning of lungs by slowing down its expansion and contraction mechanism .
I believe the correct answer is breathing trouble
Opioids are a group of molecules that produce an analgesic effect during pain and can be misused as drugs for a "good feeling." Just like any other drugs, they have to bind to receptors in order to produce an effect by entering into a cell and causing a chemical reaction. The specific receptors are called mu receptors in the brain.
The mu receptors are located in the brain and they line up to the hind part of the brain where there are sites called pons that function to control the autonomous nervous system that is responsible for involuntary activities like breathing and heartbeat. A good example of an opioid that is used for medicinal purposes is morphine that binds to its receptors to prevent the brain from recognizing pain. In the pons that control the autonomous nervous system, there is a complex called pre-Bötzinger complex that has the μ receptors for the opioids extensively. When a person takes the opioids, they attach to their receptors in order to produce an effect by acting as antagonists (opposing) to the pain molecules in blood. In so doing, they also antagonize the nerve cells that are found in the pre-Bötzinger complex. The end result is a suppressed autonomous nervous system. The lungs will have a problem expanding and relaxing, the heart rhythm will be irregular and the person if not given assistive care, may lose consciousness due to lack of oxygen supply to the brain. Cancer is a condition that is caused by alterations to the genetic material in an organisms causing cells to replicate uncontrollably. Respiratory infections are conditions where microorganisms enter into the tract and impair their functioning for example Streptococcus pyogenes bacteria entering your throat causing the condition called sore throat.
Level: High School
Subject: Biology
Topic: The brain
it is systematics 1 0 0 %
b. animal cells contain mitochondria. plant cells do not.
c. animal cells contain chloroplasts. plant cells do not.
d. plant cells are surrounded by a cell wall. animal cells are not.
The statement that correctly describes a difference between plant and animal cell is ; ( D )
Eukaryotic cells which includes plants and animals cells have similar characteristics and slight differences. The main difference between a plant cell and an animal cell is the presence of cell wall in plant cells ( for the purpose of rigidity and protection ) and the absence of cell wall in animal cells and this is because animal cells are not rigid in nature and the cell membrane provides protection and shape for the animal cell.
Hence we can conclude that the the difference between the plant cell and animal cell is, Plant cells are surrounded by a cell wall and animal cells are not.
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Answer:
D) Plant cells are surrounded by a cell wall. Animal cells are not.
Explanation:
Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out, thus animal cells do not have cell walls. So therefore, D is the correct answer.