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Vikki [24]
2 years ago
7

Which of the following would not result in the dilation of the feeder arterioles and opening of the pre capillary sphincter in s

ystemic capillary beds
a. a decrease in local tissue O2 content
b. an increase in local tissue CO2
c. a local increase in histamine
d. a local increase in ph
Biology
1 answer:
motikmotik2 years ago
5 0

Answer:

Option (C).

Explanation:

The dilation of feeder arterioles carry blood directly into the blood vessels. The pre capillary sphincter in the systemic capillary beds can open due to the different factors.

The local release of histamines do not cause the dilation of feeder arterioles and does not cause the opening of systemic capillary beds. Histamine chemical is involved in the immune response of the body.

Thus, the correct answer is option (C).  

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The nutritional energy content (in Calories) present in 86g of broccoli with 2.6g of protein, 6g of carbohydrates, and 0.3g of f
Nimfa-mama [501]

Answer:

40 Cal

Explanation:

Data provided in the question:

Protein present in the broccoli = 2.6 g

Carbohydrates present in the broccoli = 6 g

Fat present in the broccoli = 0.3 g

Now,

We know,

Energy provided by protein and carbohydrates = 4 Cal / g

and,

Energy provided by Fats = 9 Cal / g

Therefore,

Total nutritional energy content = ∑(Amount × Energy provided)

= ( 2.6  × 4 ) + (6 × 4) + (0.3 × 9)

= 10.4 + 24 + 2.7

= 37.1 Cal    

rounding off the answer to nearest 5 ≈ 40 Cal

6 0
2 years ago
Calix’s karyotype showed that he has a genotype of XXY. Explain how nondisjunction caused Calix to be XXY.
Juli2301 [7.4K]

Answer:

A XY or XY gamete fuses with a normal gamete (X or Y)

Explanation:

Meiotic nondisjunction is the phenomenon whereby chromosomes fail to separate during meiosis I or II. Meiotic nondisjunction leads to the formation of abnormal gametes I.e. gametes with additional or missing chromosomal piece.

The fusion of these abnormal gametes produced by nondisijuction with a normal gamete (X or Y chromosome). This leads to a condition called ANEUPLOIDY, which is a chromosomal disorder. In the case od Calix, XXY is an ANEUPLOIDY state that could have resulted because there was a fusion between a XX gamete and Y gamete or XY and X. The XY or XX gametes are produced as a result of nondisijuction.

4 0
2 years ago
Imagine that you are asked to measure the rate of respiration for a 25 g reptile and a 25 g mammal at 10 degrees Celsius. Predic
Airida [17]
The body temperature of the mammal will be higher than that of the reptile. this is because the mammal body temperature does not depend on its environmental temperature while a reptile does not have a stable body temperature and depend on the temperature of its environment.
8 0
2 years ago
Brain cells and red blood cells receive most of their energy directly from ________________.
Sveta_85 [38]
Ii thinks they get there energy from proteins

3 0
2 years ago
Since broth cultures of bacteria can reach high numbers of cells quickly, a series of answer experiments (one word) is required
nexus9112 [7]

The answer is Dilutions

Bacterial culture is one of the laboratory examination that could be used to determine if a specimen contain bacteria. But it will hard to count the colony if the bacteria count is too high.

That is why the specimen of the culture need to be diluted to reduce the bacteria count of the specimen, so the result will be easier to count. The unit used would be colony forming unit(CFU) per milliliter.

4 0
2 years ago
Read 2 more answers
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