The provided question is not complete as it lacks the appropriate choices for the answer, however, the correct choices are:
Which of the following will NOT prevent many bacterial infections?
a. allowing foods to cool completely before refrigerating
b. washing hands and surfaces with soap and water
c. storing food in a refrigerator
d. heating objects to very high temperatures
Answer:
The correct answer would be - allowing foods to cool before refrigerating.
Explanation:
Bacterial infections can be prevented by many processes such as washing hands with soap and water thoroughly for a minimum of twenty seconds. Storing food in the refrigerator helps the food to be fresh and infection-free from various microbes.
Heating the food, water, and tools to very high temperature helps in killing the bacteria present in these and leads to bacterial infection. Cooling the food before storing it in the refrigerator may cause bacteria to infect the food.
Answer:
Sample A: 21.3%A, 28.7% G and 28.7% C
Sample B: 27.7% A, 22.3% G and 22.3% C
Explanation:
According to Chargaff's rules of base pairing, the amount of adenine in a DNA molecule equals the amount of thymine, and the amount of G=C.
Sample A
Contains 21.3% T, so it also contains 21.3% A. Therefore A+T= 42.6%
100% - (A+T) = (G+C)
100% - 42.6% = 57.4%
G+C add up to 57.4% of the DNA in sample A. And because G=C, there's 28.7% G and 28.7% C.
Sample B
Contains 27.7% T, so it also contains 27.7% A. Therefore A+T= 55.4%
100% - 55.4% = 44.6%
G+C add up to 44.6% of the DNA in sample B.
And G=C, so there's 22.3% G and 22.3% C.
Answer:
Although the blood of the fetus and the mother does not mix, Simple diffusion across the membrane of the placenta occurs.And since diffusion is the movement of ions and gaseous molecules across the membrane from the higher concentration of the mother blood to the lower concentration of the fetus, toxic chemical are conveyed across.,
Explanation:
The woman with ptosis and her father have the genotype Pp, while her mother has pp. If she marries a man with normal eyelids (pp), there is a 50% chance that their children will inherit the dominant P allele and have ptosis.
The subject here is centered around genetics, specifically, a dominant genetic disorder called ptosis. The woman with ptosis would have a genotype of Pp, because she inherited one ptosis allele (P, for dominant) from her father and one normal allele (p, for recessive) from her mother. Hence, her father's genotype was also Pp, and her mother's was pp.
If the woman marries a man with normal eyelids (genotype pp), each child would have a 0.5 (or 50%) probability of inheriting the dominant P allele from the mother and thus, having ptosis. This is because each child will get a p allele from the father (since he can provide only that), and either a P or p allele from the mother with the probabilities being 50% for each. Hence, for these offspring, their potential genotypes can be Pp (ptosis) or pp (normal).
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Answer:
When we make an inference, we draw a conclusion based on the evidence that we have available. ... Examples of Inference: A character has a diaper in her hand, spit-up on her shirt, and a bottle warming on the counter. You can infer that this character is a mother.
Explanation:
Help me plzzzz
Answer:
Your answers are:
1. Igneous
2. Sedimentary
Answer:
1. Igneous
2. Metamorphic