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GalinKa [24]
3 years ago
7

What characteristics of the molecules being transported determines how they will cross the membrane?

Biology
2 answers:
Lemur [1.5K]3 years ago
5 0

Answer:

C. Polarity and size

Explanation:

Three primary factors determine whether a molecule will diffuse across a cell membrane: concentration, charge and size.

forsale [732]3 years ago
4 0

Answer:

C. Polarity and size

Explanation:

The polarity and size of the molecules being transported determines, how they will cross the membrane.

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What is the cause of the hydranencephaly? Select one: a. Aqueductal stenosis b. Subaranchoid stenosis c. Overproduction of CSF d
Dennis_Churaev [7]

Answer:

The correct answer is d.

Explanation:

Hydranencephaly is a rare congenital anomaly characterized by the absence and replacement of the cerebral hemispheres by cerebrospinal fluid and necrotic remains, with preservation of the membranes (leptomeninges), within a skull of normal capacity and shape. It is the most severe form of cortical destruction cerebral bilateral and is considered an extreme form of porencephaly (focal cystic cavity). It mainly affects the territory of the internal carotid artery and middle cerebral artery, with preservation of the territories supplied by the vertebrobasilar arteries. The most accepted etiology is carotid vascular insufficiency, due to multiple causes (bleeding, placental thromboembolism, arteritis, vascular malformations, among others).

5 0
3 years ago
Which of the following hormones is directly
3241004551 [841]

Answer:

adrenaline is the hormone which is directly controlled by nervous system

7 0
2 years ago
The form of circulatory shock known as hypovolemic shock is ________. the form of shock caused by anaphylaxis any condition in w
WITCHER [35]

Answer:

The form of circulatory shock known as hypovolemic shock is the condition when the plasma level of blood and the body fluids level is decreased rapidly causing insufficient level of oxygen in the blood . the form of shock caused by anaphylaxis any condition in which blood vessels are inadequately filled and blood cannot circulate normally shock that results from large-scale loss of blood volume, or after severe vomiting or diarrhea always fatal

Explanation:

  • hypovolemic shock is one type of shock among different kinds of shock. it happens when body fluids or blood plasma level starts to decrease rapidly due to some internal or external injury such as bleeding, dehydration, burns, and severe vomiting, diarrhea.
  • later causes body fluid loss which decreases the o₂ level in blood.
  • this causes lack of o₂ supply in organs which is indeed a fatal condition.
5 0
3 years ago
The rise in manufacturing beginning in the early 1800s eventually resulted in __________ by 1848?
mamaluj [8]

Answer:

The correct answer is "The emergence of a larger middle class in the North".

Explanation:

The missing options of this question are:

A) The emergence of a larger middle class in the North

B) A decline in economic inequality in urban areas

C) An increased demand for agricultural workers in the Midwest

D) The improvement of working conditions in factories

The correct answer is "The emergence of a larger middle class in the North"

The period of 1800 to 1848 is characterized by being of economical growth due to the rise in manufacturing technology. Result of this economical growth, many families improve their economical conditions and by 1848 a larger middle class emerged in the North. However, eventually a laboring poor population started to growth as well.

6 0
3 years ago
Lesch-Nyhan syndrome is an X-linked, recessive condition caused by mutation of the HPRT1 gene responsible for purine metabolism.
Elanso [62]

Answer:

B. The father did not contribute a sex chromosome to his daughter due to nondisjunction of the sex chromosomes. The daughter is XO and her only X chromosome came from her mother, who was a carrier.

A.The mother's X chromosomes failed to separate during meiosis, and the daughter inherited two X chromosomes with the Lesch-Nyhan mutation. The father contributed no sex chromosomes.

Explanation:

As seen in the question above, a little girl was diagnosed with Lesch-Nyhan syndrome, which is an X-linked recessive condition caused by a mutation in the HPRT1 gene responsible for purine metabolism.

The little girl's parents do not have the syndrome, and no one in the little girl's paternal family presented this syndrome, however, we know that the maternal grandfather of the little girl's mother had the syndrome, which means that it was the mother's genetic material that contributed to the development of the syndrome in the little girl. This was because the little girl did not receive any X chromosomes from her father, but she inherited the two X chromosomes from her mother that coded for the Lesch-Nyhan mutation. This happened because the mother's X chromosome disjuction did not occur during meiosis I.

As shown above, the father did not contribute any sex chromosomes to his daughter, which means that the daughter is XO and her only X chromosome came from her mother, who was a carrier.

3 0
2 years ago
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