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Ray Of Light [21]
3 years ago
6

List 2 examples of a human's first line of defense:

Biology
1 answer:
Verizon [17]3 years ago
5 0

Answer:

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.

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An elderly client newly diagnosed with systolic hypertension asks her health care provider why this happens. which response is m
Roman55 [17]
The response that is most accurate is that; with age, your arteries lose their elasticity and are replaced with collagen, which makes your arteries stiffer. Systolic hypertension or pressure is an elevated systolic blood pressure. If the systolic blood pressure is elevated (above 140) with a normal (<90) diastolic blood pressure, it is called the isolated systolic hypertension. 
3 0
2 years ago
During ________ the chromosomes, which were distinct and condensed, begin to spread out into a tangle of chromatin. a nuclear en
polet [3.4K]
During telophase in mitosis or meiosis II, where chromosomes which were previously distinct and condensed, de-condense and spread out into a tangle of chromatin. At the same time, the nuclear envelope re-forms around each cluster of chromosomes in each of the daughter cells, and spindle fibres disintegrate.

Chromosomes are unlikely to de-condense and spread out into a tangle of chromatin during telophase I (i.e. Telophase of Meiosis I), since Meiosis is still ongoing, and the genetic material should be in its condensed form during Meiosis II as well. 

Hope this helps! :)
8 0
2 years ago
Read 2 more answers
How does the amount of the Sun's energy the Earth receives change throughout the year?
azamat

Answer:

b

Explanation:

the summer solstice is in June and it lasts until September, therefore while it's summer in the Northern hemisphere, its winter in the Southern.

8 0
3 years ago
Neurons may be classified according to several characteristics. Which of the following is correct? A. Group A fibers are mostly
den301095 [7]

Answer:

Option (B).

Explanation:

Neurons or nerve cell are the basic structural and functional unit of the nervous system. Fibers are the thread like long projection of the nerve cells.

Neurons are classified into three fibers- Group A fibers, B fibers and C fibers. The group C fibers cannot capable of doing the saltatory conduction of the nerve impulse because they are unmyelinated.

Thus, the correct answer is option (B).

3 0
3 years ago
Explain the difference between selective breeding and genetic engineering in the development of food crops with desirable traits
Brums [2.3K]

Selective breeding is the traditional method for improving crops and livestock, such as increasing disease resistance or milk yield.

Genetic engineering is a faster way, which transplants genes for a desired characteristic into an organism. However, genetic engineering offers many potential benefits but carries the risk of unexpected harmful effects.

6 0
3 years ago
Read 2 more answers
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