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goldenfox [79]
3 years ago
5

When a woman goes into labor during childbirth, the cervix expands which sends a signal to the pituitary gland to release oxytoc

in which results in more contractions which results in more oxytocin being released and so on. What is happening during childbirth?
A) A negative feedback loop.
B) Cell regulation
C) A positive feedback loop.
D)A neutral feedback loop
Biology
2 answers:
FrozenT [24]3 years ago
8 0

Answer;

C) A positive feedback loop.

Explanation;

-Biological systems operate on a mechanism of inputs and outputs, each caused by and causing a certain event. A feedback loop is a biological occurrence in which the output of a system amplifies the system (positive feedback) or inhibits the system (negative feedback)

-Oxytocin is controlled by a positive feedback mechanism where release of the hormone causes an action which stimulates more of its own release. When contraction of the uterus starts, for example, oxytocin is released which stimulates more contractions and more oxytocin to be released.

Sauron [17]3 years ago
6 0
C) A POSITIVE FEEDBACK IS THE CORRECT ANSWER. WHEN CONTRACTIONS HAPPENIT IS TO HELP GET THE BABY OUT AND TO LET YOU KNOW WHEN THE BABY IS COMING SO WHEN CONTRACTIONS START IT MEANS YOU ARE GOING INTO LABER

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Which of the following statements correctly identifies the location of the hydrogens bonds in DNA
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Answer:

This question is incomplete as it lacks options. However, it can be answered based on general knowledge of the DNA structure.

Hydrogen bonds in a DNA are located between the nucleotides that holds the double stranded DNA molecules.

Explanation:

Deoxyribonucleic acid (DNA) is the genetic material in living cells. The DNA molecule is made up of nucleotides monomers. However, since the DNA molecule is double-stranded, the nucleotides are of two chains composed of four nucleotide subunits viz: Adenine (A), Thymine (T), Guanine (G) and Cytosine (C).

The two chains of nucleotides in a DNA molecule are called strands. Each strand is bonded to one another by the nucleotides using complementary base pairing i.e. A-T, G-C. The bonds between the nucleotidew of each strand is called HYDROGEN BOND.

Hence, HYDROGEN BONDS in a DNA molecule is located in between two nucleotides of each strand. That is, hydrogen bond holds Adenine to Thymine and Guanine to Cytosine.

3 0
3 years ago
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Scientists can use mutants to study metabolic pathways. These organisms have a mutation in a gene encoding a metabolic pathway e
lisabon 2012 [21]

Answer:

Pyruvate kinase

Explanation:

Yeasts convert glycerol and sugars into glyceraldehyde 3-phosphate (G3P) through independent pathways. Then, G3P forms pyruvate and, in some circumstances, pyruvate is converted in ethanol, which can be used as energy sources. If the mutation affects any reaction before G3P formation, it will only affect yeast growing either on sugar or pyruvate but not both.

Pyruvate kinase is the only enzyme on the list acting after G3P is formed and before pyruvate is formed. All other options are enzymes acting only in the formation of G3P from sugars. Meaning that only pyruvate kinase mutants will lack the ability to grow on both sugars and glycerol.

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3 years ago
What do you do if you suspect an unusual disease in a herd of animals? (choose the one best answer.)?
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Need answer choices
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3 years ago
A sperm fertilized an egg. Which two structures will the fertilized egg contact?
iVinArrow [24]

The lining of the uterus, and the fallopian tube.

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Many organizations release indexes used to measure the development of the world's countries. As we learned in this lesson, these
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Answer:

The correct answer is -  GDP nominal, human resources and right, and GDP per capita.

Explanation:

The three major and most reliable factors about determining the development of a country out of all the indexes are GDP nominal, the human rights index, and the GDP per capita.

The economy and production of a country can be shown by the GDP nominal if it is showing progress or declines.

The Average income of the citizen of the country is exhibited by GDP per capita to examine if the wealth of the country shares that gives an idea about rich, poor or the middle class.

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