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Crank
3 years ago
14

1) What is a sphincter muscle?

Biology
1 answer:
serious [3.7K]3 years ago
7 0

Answer:

1-A ring-shaped muscle that relaxes or tightens to open or close a passage or opening in the body.

2-Sphincters are specialized muscles that are located at the upper esophagus (upper esophageal sphincter (UES) and the gastroesophageal junction

Explanation:

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Which of the following is not a body segment of the fruit fly embryo?ThoraxAbdomenHeadAntenna
AfilCa [17]

Answer: Antenna

Explanation:

The morphogenesis is a process by which the egg get transformed into a matured adult insect. The egg transform into several transitional stages such as embryo, larva, pupa and finally to adult insect.

The fruit flies undergoes three development stages during morphogenesis  these includes the egg, larvae and pupa. The fruit flies can develop into adult within 1-2 weeks at room temperature. The egg as well as larval stages takes a span of eight days whereas the pupal stage takes six days for development.

The embryo enclosed inside the egg exhibit three important parts the head, thorax and abdomen the antenna is the structure which develop in adult flies.

8 0
3 years ago
Which statement best summarizes the importance of meiosis to reproduction?
Marrrta [24]
Where are the statements, huh wait what
6 0
4 years ago
Below is a fragment of a DNA strand. A single primer is pictured below the strand in the gray box. 3'-ATACGACTAGTCGGGACCATATC-5'
Free_Kalibri [48]

Answer: 5'-TATGCTGATCAGCCCTGGTATAG-3'

Explanation:

DNA consists of 4 nucleotides; Adenine (A), Thymine (T), Cytosine (C) and Guanine (G), which serve as it's building block. The nucleotides are linked by 3', 5' phosphodiester bonds.

Phosphodiester bonds are bonds that join two nucleotides together.

Guanine (G) which always pairs with Cytosine (C) and Adenine (A) always pairs with Thymine (T). Percentage of A usually equals that of T while that of C usually equals G. This is known as Chargaff's rule.

So, to write the sequence of the complementary strand, you interchange the nucleotides with their corresponding partner.

5 0
4 years ago
All research data must be recorded _____.
Lunna [17]

Answer:

accurately that is the answer

Explanation:

6 0
3 years ago
For an organism to survive, it must acquire energy. What is an example of acquiring energy?
Vilka [71]
1.) eating an apple because it is gaining energy from eating the apple
2.) communicate verbally. That doesn’t help them survive when it comes to the organism itself
3.) True, to maintain structure you must stay healthy
4.) A, because they are healing the part where the structure was damaged.
5.) B, because cells have distinct structures and set of functions.
6 0
3 years ago
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