BIOLOGY HIGH SCHOOL

Cleansing the venipuncture site before collection of blood culture specimens usually involves the use of: isopropyl alcohol and peroxide ethyl alcohol and peroxide isopropyl alcohol and chlorhexidine gluconate ethyl alcohol and chlorophenol

Answers

Answer 1
Answer:

Answer:

C) isopropyl alcohol and chlorhexidine gluconate

Explanation:

The World Health Organization (WHO) guidelines mandate that the venipuncture site be cleaned with an alcohol swab of 70 percent alcohol.

Document H3-A6 is also recommended by the Clinical and Laboratory Standards Institute (CLSI) that skin disinfection with 70% isopropyl alcohol or ethanol is required before venipuncturing tosterile the skin surface. chlorhexidine gluconate  is a good repacment of isopropyl alcohol, hence used at venipuncture site.

Hence, the correct option is C.

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1. How many different phenotypes are possible in the offspring of two parents with genotypes AA and aa, where A is the dominant allele for a trait and a is the recessive allele for the same trait? onetwo three four 2. A woman buys red-flowering and blue-flowering plants of the same species and plants them in her garden. The plant undergoes both self-fertilization and cross-fertilization. The woman collects seeds and plants them the following spring. What can the woman expect to observe in the flowers of the new generation of plants if the gene for flower color is codominant? (1 point) plants with red flowers and plants with blue flowers plants with both red and blue flowers plants with red flowers, plants with blue flowers, and plants with purple flowers plants with purple flowers 3. What is formed at the end of meiosis? two genetically identical cells four genetically different cells four genetically identical cells two genetically different cells 4. Which of the following is true concerning DNA replication? The original DNA molecule remains intact, although it acts as a template for the formation of a copy that contains two new antiparallel strands. The leading strand is copied in the 5’ to 3’ direction and the lagging strand is copied in the 3’ to 5’ direction. Both strands are copied to form Okazaki fragments, which are later annealed by DNA ligase. The replication process proceeds on both strands in the same direction, which requires that RNA primers bind to the lagging strand. 5. Which of the following will be directly affected in a bacterial cell that has a mutation in its gene for RNA polymerase? Which of the following will be directly affected in a bacterial cell that has a mutation in its gene for RNA polymerase? transcription translation gene regulation

the digestive organs are an example of a(n) ____________ in that they are multiple, different organs working together to carry out a similar function.

Answers

The answer is organ systems. An organ system is a group of organs working hand in hand to execute a certain task in the body or a common task in the body.

Final answer:

The digestive organs are an example of an organ system in biology, where different organs work together to carry out a similar function.

Explanation:

The digestive organs are an example of an organ system in biology. An organ system is a group of organs that work together to perform a specific function. In the case of the digestive system, it includes organs such as the mouth, esophagus, stomach, small intestine, large intestine, and liver.

Each organ in the digestive system has a specific role in the overall process of digestion. For example, the mouth is responsible for chewing and starting the breakdown of food, while the stomach performs the chemical digestion of proteins. The small intestine is where most of the nutrient absorption takes place, and the large intestine is involved in reabsorbing water and forming feces.

All of these organs work together in a coordinated manner to ensure that food is properly digested and nutrients are absorbed. This is an essential process for obtaining energy and nutrients from food.

Learn more about organ system here:

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In Indian cuisine, sometimes a papaya is added to make meat cook faster. Which of the following is a plausible explanation of why this method speeds the chemical changes that occur during cooking?

Answers

The papaya, especially the green one, is used as a tenderizer in boiling red meat. This is because of the property of papaya's skin and leaves contain enzymes called papain. When this papain get contact to red meat the connecting tissue of the meat easily breaks down

Kevin has his mother’s blue eyes and her shyness, which can both be attributed to __________.a. habits
b. heredity
c. environment
d. culture

Answers

the answer is B. Heredity
The correct answer would be heredity. As Kevin was getting his genes - Blue eyes are usually less likely to brown eyes in the equation. Anyway, if Kevin's mother had a very strong gene for the blue eyes dna strand , then Kevin would get the blue eyes. As Kevin was growing up, he most likely tried to be like a familiar figure. Which in this situation is his mother.  

A plant can produce either purple flowers or white flowers. What is the probability of purple-flowered offspring if two plants that are heterozygous for purple flowers are crossed?

Answers

Answer:

A heterozygous trait contains two different allelic forms of a gene in which one is a dominant allele and one is recessive allele. If there is a crossing between two plants that are heterozygous for their trait then the probability of expression of the dominant allele is 3/4.

So according to this question plants are heterozygous that means the genes would be like Pp and Pp. Here P indicates the purple color allele which is dominant and p indicates recessive white color allele.

Therefore cross between these two will give genotypes PP, Pp Pp, and pp. So according to the law of dominance that says dominant allele will express itself, therefore, probability of purple-flowered offspring is 3/4 because 3 out of four genotypes have the dominant allele.
You would have a 3 out of 4 chance of getting a purple flower if purple is the dominant trait.  

~I love biology!!

If you flip two coins, the probability that both will come up heads is _____.

Answers

Answer:

If you flip two coins, the probability that both will come up heads is 25%.

Explanation:

Probability is the chance that one or more events occur. In this case, the individual event is the coin flip. When you flip a coin, the probability that will come up heads is 0.5 or 50% because you have two choices with the same probability (50% heads, and 50% tails).

However, the question is related to multiple events. The events can be independent (the result of one event does not affect the result of the other) or dependent (the result of one event affects the result of the other). In this, because you are flipping two coins, events are independent; therefore the probability of each event is the same (0.5 or 50%)

To calculate it:

Probability of heads1 x Probability of heads2 = Probability of 2 head

0.5 x 0.5 = 0.25

to convert into a percentage:

(0.25/1) x 100 = 25%
It is a 25% chance of both of them being heads.

What is qualitative and quantitive data?

Answers

qualitative is the quality of something such as your senses; the look, feel, smell or even the taste of an object like its color
quantitative: is number like pounds or amount
Qualitative is "qualities like color and the 5 senses and quantitative is measure and  amount.
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