BIOLOGY COLLEGE

Structure moves up against epiglottis when food is swallowed to prevent passage of food into it.a. The larynx
b. The nose
c. The pharynx

Answers

Answer 1
Answer:

Answer:

The correct answer is A. The larynx moves up against epiglottis when food is swallowed to prevent passage of food into it.

Explanation:

The epiglottis is a moist, cartilaginous structure that is part of the cartilaginous skeleton of the larynx. It also marks the boundary between the oropharynx and the laryngopharynx. The epiglottis obstructs the passage of the bolus at the time of swallowing preventing it from going to the respiratory system.

Larynx closure occurs when the vestibular and vocal folds approach the midline during swallowing. Occasionally, when you eat very fast, solid foods or liquids can enter the larynx.

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why do the processes and events dating back to the big bang eventually led to the existence of life on earth​

Answers

Answer:

Stars are formed such that their death led to the creation of life.

Explanation:

The Big Bang theory was developed in 1927. This theory helps to understand how the universe was created. According to this theory, hydrogen gas was created through a process of expansion and explosion. As a result, stars are formed such that their death led to the creation of life.

Earth formed around 4.54 billion years ago which is equal to approximately one-third of the age of the universe.

what is the autonomic nervous system about? explain full details, like a reflection on it. I will give brainliest if answered correctly

Answers

the autonomic nervous system is responsible for regulating the activity of glands, smooth muscle, and cardiac muscle. its under involuntary control, meaning it works without us telling it to do so. it's divided into two divisions: sympathetic and parasympathetic. in sympathetic division, here, the preganglionic fiber is short and the preganglionic fiber is long. sympathetic division is very important during emergancy situationd and is commonly associated with "fight or flight" response. it accelerates the heartbeat, dilates the bronchi, and inhibits the digestive tract. the parasympathetic includes cranial nerves and fibers. it is often referred to as the "rest and digest division". here, the preganglionic fiber is long and the preganglionic fiber is short. it promotes responses associated with a relaxed state, such as pupil contraction, digestion of food, and a reduced heart rate.

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Salmon fish hatcheries add a harmless perfume (morpholine) to a stream when they release young fish. When the fish mature, they attract them back to the home stream by using this chemical (in nature the fish smell the unique odors of soil and trees along the home stream). In effect, the hatchery biologist is usingA. the fish's inborn instincts to relocate its own stream.
B. the fish's inborn instincts to relocate its own stream.
C. an experiment based on the ability of fish to learn by trial and error.
D. chemotropisms.

Answers

The options are not complete

Salmon fish hatcheries add a harmless perfume (morpholine) to a stream when they release young fish. When the fish mature, they attract them back to the home stream by using this chemical (in nature the fish smell the unique odors of soil and trees along the home stream). In effect, the hatchery biologist is using

A. the fish's inborn instincts to relocate its own stream.

B. the fish's inborn instincts to relocate its own stream.

C. an experiment based on the ability of fish to learn by trial and error.

D. chemotropisms.

E. Imprinting

Answer:

E. Imprinting

Explanation:

Imprinting is kind of rapid responsive learning occurring at a particular stage in life, whereby the organism establishes a behavioral pattern such as recognition or attraction to it kinship or a substitute.

In the Salmon fish hatcheries(a building where hatching of fish or poultry eggs is artificially controlled for commercial purposes), the addition of a harmless perfume (morpholine) to a stream when they release young fish is a substitute to the Salmon fish kinship. When the fish mature, i.e at a particular stage of their life, they attract them back(a form of attraction to it own kind) to the home stream by using this chemical.

What is ment by paranoid​

Answers

1 : characterized by or resembling paranoia or paranoid schizophrenia a paranoid psychiatric patient. 2 : characterized by suspiciousness, persecutory trends, or megalomania behaving in a paranoid manner with accusations of persecutions. 3 : extremely fearful was so paranoid that he was afraid to walk the streets.

Answer:

when you are seeing thing that is not there or when you are having illusions

Explanation:

Use the template of a replication fork to draw arrows that represent both continuous and discontinuous DNA synthesis. Draw one long arrow to show continuous DNA synthesis and three arrows to show discontinuous DNA synthesis. The arrows should point in the direction of nucleotide addition, and the three arrows showing discontinuous synthesis should be numbered 1, 2, and 3, in the order of fragment synthesis.

Answers

Answer: seen below

Explanation:

Deoxyribonucleic acid (DNA) synthesis is the biological process by which DNA molecule is created. In the cell, each of the two strands of the DNA molecule acts as a template for the synthesis of a complementary strand. This strands are separated during replication (DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule). DNA polymerase synthesizes the new strands by adding nucleotides that complement each (template) strand.

Deoxyribonucleic acid (DNA) synthesis is continuous because extension of a single ribonucleic acid (RNA) primer occurs without interruption into the replication fork as it continues to open to the right as seen on the diagram below. On the upper lagging strand which is the discontinuous synthesis, here synthesis is discontinuous, since new RNA primers must be added as opening of the replication fork continues to expose new template.

Stereoscopic vision, grasping hands and flat nails rather than claws seem to be good adaptations to living in trees. However, some scientists have hypothesized that these traits were more likely selected for catching small prey. Why?

Answers

Answer:

This is due to the general nature of the body's features.

Explanation:

The traits are important in the survival of the creatures. For example, a keen vision is needed to spot prey that is several meters or kilometers away. In addition, the claws serve different functions. For example, the claws are there to rest on the patch of the tree and hold firmly. In addition, the claws are for tearing prey. Further, the claws are for holding and lifting prey and suffocating it if necessary.

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