A marine biologist is examining the effects of oil pollution on a population of birds known as seagulls (Larus canus). She is particularly concerned that oil pollution may reduce the number of eggs raised in a seagull nest. During one breeding season, she counted the number of eggs present in a sampling of six seagull nests near each of the 14 refineries throughout the state. She discovered that seagulls laid and raised an average of four eggs per season. To confirm her hypothesis, the researcher must now examine seagull nests that have not been exposed to oil pollution. The researcher believes she is correct, and so expects to find D) 4-6 eggs per nest.
Answer:
The restriction endonucleases in bacteria (b) they provide a defense mechanism against infection by viruses
Explanation:
The restriction endonucleases is a protein that is produced by the bacterias that interacts with the DNA of them and gives protection to the bacterial cell by defending against viruses.
Is important to remember that viruses go into different organisms just with a copy of DNA that wants to replicate inside of them creating more and more copies until it breaks the hosting cell and this is how the infection spreads. This protein restricts (that's the reason of its name) or stops the replication stage of the virus DNA by cutting it into many pieces stopping in this way the spread of the infection and the death of the bacteria.
(30%) gorilla babies die within the first few months of their lives because of inherent weakness of the infant or disease.
What is inherited disease?
Genetic factors play a role in almost all health conditions and traits, but there are some conditions in which genetic alterations play a role in almost all of the causes that cause the condition.
Genes are passed from parent to child, so are DNA changes within the gene. DNA changes can also occur spontaneously, first appearing in children of unaffected parents. This is called a new mutation, and the word mutation means change.
Therefore, (30%) gorilla babies die within the first few months of their lives because of inherent weakness of the infant or disease.
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Answer:
3. Slurred speech
Explanation:
Phenytoin is an anticonvulsant, anti-arrhythmic and muscle relaxant that affects ion channels. Its use is limited due to its many adverse effects, it can cause signs and symptoms depending on its doses, for the example given,<em> a level between 30-40 mcg/mL </em>can cause ataxia (lack of muscle control), <em>slurred speech,</em> nausea, and vomiting.
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