Answer: The body makes sure that food does not get into the lungs because the epiglottis closes the air pathway so that food will not enter it.
Answer:
food getting to the lungs will be aspiration
Explanation:
A flap of tissue called the epiglottis sits over the top of the trachea. This flap blocks food and drink from going down into the trachea when you swallow hence preventing food from getting into the lungs
give me brainiest please
A friend who is not taking your Biology course fills a cup with ice and then a drink. The friend asks you why the ice in the cup is floating, and you are able to say that Group of answer choices water vapor is less dense than liquid water. ice is denser than liquid water. convection currents caused by temperature differences push upwards on the ice. the molecules are closer together in ice than in liquid water. the molecules are farther apart in ice than in liquid water.
Answer:
the molecules are farther apart in ice than in liquid water.
Explanation:
The correct answer would be that the molecules of water are farther apart in ice than in liquid water.
Water molecules in ice form are usually less dense than water molecules in liquid form. The water molecules in ice usually arrange themselves in a lattice form, unlike the random form in liquid water. This arrangement makes water molecules in ice to be more evenly spread out than in their liquid counterpart. Thus, ice is usually less dense than liquid water and will obey the principle of flotation by floating on water.
The ice in the cup is floating is due to: the molecules of water are farther apart in ice than in liquid water.
The density of a substance is the mass of the substance per unit of its volume. The formula to calculate the density is :
[tex]D = \frac{m}{v}[/tex], where D = density, m = mass of the substance, and v = volume
The density is the factor that determines if a substance will float or sink. The less-dense substance floats whereas, the more-dense object sinks.When water freezes to form ice then water molecules show expansion to create an open cage-like structure.This cage-like structure decreases the density of ice than the water so mass ice will have more volume as compared to liquid water.Thus, the ice floats on water - the molecules of water are farther apart in ice than in liquid water.
Learn more about the density:
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write in short about medical occupation
A vocation characterized by a specialized body of knowledge of medicine that its members must teach and expand, by a code of ethics and a duty of service that put patient care above self-interest, and by the privilege of self-regulation granted by society.Occupational medicine (also known as “occupational health”) is focused on the treatment of work-related injuries and illnesses. Physicians trained in occupational medicine diagnose and treat work-related injuries much more effectively than most primary care physicians.
True or false? Phototropism only happens after plants move from darkness into the light.
Group of answer choices
False
True
Answer:
phototropism only happens after plants move from darkness into the light (false)
Answer:
The answer is false.
Explanation:
atrial fibrillation, a dangerous form of irregular heartbeat is associated with the intake of _____.
Answer:
Palmitic acid
Explanation:
Intake of palmitic acid is associated with atrial fibrillation.
Palmitic acid - is a saturated long-chain fatty acid and a straight chain saturated fatty acid with a 16-carbon backbone. Palmitic acid is found naturally in palm oil and palm kernel oil, as well as in butter, cheese, milk and meat. It is a conjugate acid of a hexadecanoate.
Hexadecanoate - is a long-chain fatty acid anion that is the conjugate base of hexadecanoic acid (palmitic acid).
According to the body-cover theory of phonation, which part of the vocal fold is not considered to be a portion of the cover
Answer: B. Thyroarytenoid muscle
Explanation:
The options include:
A. Epithelium
B. Thyroarytenoid muscle
C. Superficial layer of the lamina propria
D. Intermediate layer of the lamina propria
The cover-body theory of vocal fold vibration was published by Hurano in 1974 and he described the morphological structure of the vocal folds. He also divided them into the body and cover layer biomechanically.
The main substance of the vocal fold is regarded as the thyroarytenoid muscle. The muscle provides most of the mass of the vocal cord.
17._________contains plenty of salt.It is found in the seas and oceans.Seawater is also called.
18.________.
19._________is found beneath the earth's surface.it comes from water that seeps into the ground.it is considered the cleanest water and contains plenty of dissolved minerals which the human body needs.
20.________ is also called surface water.This is found in opem but small bodies of watee loke rivers,lakes,creeks,and ponds.surface water comes mostly from rain.
Choices
Hard water
Sea water
fresh water
ground water
Answer:
17. Sea Water
18. Salt Water (Hard Water)
19. Ground Water
20. Fresh Water
Most body water comes from:moisture absorbed through the skin.fluids we drink.the food we eat.metabolism.
Answer:
fluids we drink.
Explanation:
Most body water comes from fluids we drink such as water, juices etc. Our body obtains water by absorbing it directly from the digestive tract. A small amount of water is produced in the metabolism of food particles. Our body loses excess amount of water by excreting it in the form of urine from the body. Kidney is the organ that filters waster materials and excess water from the blood and remove it from the body.
Which base does Adenine pair with in RNA?
A. Uracil
B. Guanine
C. Thymine
D. Cytosine
Answer:
A. Uracil would be the answer.
For a reaction, A H= 2 kJ. For which value of TA Sis the reaction spontaneous?
Answer:
option a is the answer I think so
Answer:
option a
Explanation:
For which value of TA Sis the reaction spontaneous?
why do wild plants need to reproduce sexually as well as asexually ?
Please answer correctly
Answer:
Wild plants would need to reproduce sexually so that there can be variation throughout the species to reduce the number of plants being at risks to certain diseases if the environment is changing. However, the wild plants need to produce asexually if the environment is stable.
Wild plants need to reproduce sexually as well as asexually in order to create variation within a species and lower the number of plants that are susceptible to specific illnesses in a changing environment.
What are wild plants?Wild plants would need to reproduce sexually. However, if the environment is stable, wild plants must reproduce asexually. Since male and female gametes are not mixed, asexual reproduction produces plants that are genetically similar to the parent plant and increases survival.
A seedling formed from a seed matures more slowly and is less robust than a cutting or bud is taken from an older plant.
Therefore, in order to diversify within a species and reduce the number of plants susceptible to specific diseases in a changing environment, wild plants must reproduce both sexually and asexually.
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which anwser choice best describes a community
Answer:
Community Definition. A biotic community, also known as a biota or ’biocoenosis’, is the group of organisms that live...
Types of Community. There are two main types of community. A major community is the smallest ecological unit which is...
Characteristics of a Community. The features within communities are highly variable, and there are a number of
Explanation:
on which surfaces did you move the box?
Answer:
The force of friction between the two surfaces will increase if the two surfaces are pressed harder against each other. Heavy box will press the floor surface harder as compared to the lighter box. That means the force of friction will be more between the heavier box and surface than between the lighter box and surface. Thus, larger force will be needed to push the heavier box than to push the lighter one.
A phage is improperly assembled, so that it does not receive DNA within its head. What effect will this have on the phage
Answer:
The phage will not be able to infect a bacterial host cell.
6CO2 + 6H2O → C6H12O6 +602
In this chemical reaction H2O is a...
A. reactant.
B. product,
C. photosynthesis.
Answer:
water is a reactant because it reacts with carbon dioxide to form the products above
Tom is having difficulty dorsiflexing and inverting his right foot. Which muscle is most likely involved in this problem
Answer:
It should be the tibialis anterior
Explanation:
I hope this helps!
the basic structural and functional unit of the living organism is
Answer:
cell
Explanation:
The cell is the fundamental unit of structure and function in living things. All organisms are made up of one or more cells. Cells arise from other cells through cellular division.
Select all that apply Select all true statements about the Glomeromycota. Multiple select question. They are plant pathogens and parasites. They do not undergo sexual reproduction. They lack nuclei. They form arbuscular mycorrhizae.
Answer:
They do not undergo sexual reproduction.
They form arbuscular mycorrhizae.
Explanation:
Glomeromycota form arbuscular mycorrhizae and they do not undergo sexual reproduction.
Glomeromycota is one of the divisions of fungi that can be found in soils where they form symbioses(association where both glomeromycota and the plant benefits) with the roots of the plants. They can also be found in wetlands. An example of glomeromycota is Acaulospora.
They are also called mycorrhiza. They reproduce through asexual reproduction.
Which method of waste treatment is LEAST harmful to the environment?
Answer:
c
Explanation:
because burning burying and landfill are all harmful
A population of birds lives on a small island. Another population of the same species lives on the mainland. The
distance between the island and the mainland is too great for birds to fly back and forth. Recently, a series of
sandbars and tiny islands have formed between the island and the mainland.
Answer:
The birds can now reach the Island.
Explanation:
The birds can now reach the Island because there is a sandbars and tiny Islands where they can rest for sometime as well as feed on the insects present at that sandbars and tiny Islands. Before these sandbars and tiny islands, the birds can't reach to the mainland due to large distance between Island and mainland so they have no capability to fly such large distance until the tiny Island and sandbars are appeared in the ocean.
Answer: an increase in gene flow between the bird populations
Explanation: :)
What's different about the 4 dams
Answer:
dams could mean the bridges
dams could be mean like something real good
It could also dams as in girl eg-damsel in distress, dams was a old word used in the 70s for girls
After nervous stimulation stops, calcium ions returning to the sarcoplasmic reticulum prevent ACh in the synaptic cleft from continuing to stimulate contraction True False
Answer:
False.
Explanation:
Neurotransmitter release occurs from the nervous terminal or varicosities in the neuronal axon. When an action potential reaches the nervous terminal, the neurotransmitter is released by exocytose. The molecule binds to its receptor in the postsynaptic neuron, triggering an answer. As long as the signal molecule is in the synaptic space, it keeps linking to its receptor and causing a postsynaptic response. To stop this process the neurotransmitter must be taken out from the synaptic space. There are two mechanisms by which the neurotransmitter can be eliminated:
• Enzymatic degradation/deactivation: There are specific enzymes in the synaptic space, which are in charge of inactivating the neurotransmitter by breaking or degrading it. The enzyme acetylcholinesterase prevents ACh from continuing to stimulate contraction.
• Reuptake: Receptors located in the presynaptic membrane can capture de molecule to store it back in new vesicles for posterior use. These transporters are active transport proteins that easily recognize the neurotransmitter.
Parte de la variabilidad genética que aporta la meiosis se produce en la
Answer:
Se produce durante la profase 1 de la meiosis, y en ella se da un entrecruzamiento entre una de las dos cromátidas de los cromosomas homólogos, por lo que las cromátidas resultantes son diferentes entre sí y de las originales.
Explanation:
What is the approximate age of the ash footprints at Laetoli? (Hint: what is the radiometric age of Laetoli?)
Answer:
The correct answer is - 3.66 million years ago.
Explanation:
Laetoli, located on the Eyasi Plateau which is known for the remains or footprints of the oldest hominin that were formed and preserved by a series of events - a volcanic eruption, a rainstorm, and another ashfall.
The remains and footprints were discovered at 1978 and are attributed to Australopithecus afarensis. The age of this remaining footprint can be estimated with the help of the radiometric method of the remains which tells that the footprints are 3.66 million years ago formed.
Identify the producer in the following food chain: Oak tree, Caterpillar, Blue Jay, Bobcat
A. Caterpillar
B. Oak tree
C. Blue Jay
D. Bobcat
7. Give two examples of biochemical reactions and explain how an organism uses ATP within the reactions.
Answer:
Because of its energy supply, ATP is necessary for all biological reactions.
ATP is employed both in salt and potassium pumping operations and in the cellular breathing mechanism.
Explanation:
The breakdown of glucose, which frees the cell's energy for life functions, is an example of a catabolic response. Endothermic reactions are called anabolic processes in organisms. The connection between amino acids and a protein is an example of an anabolic response.
If a cell needs energy, this link breaks into adenosine diphosphate (ADP) and a free molecule of phosphate... With an excess power of the cell, this energy is stored by creating ATP from ADP and phosphate. For any muscular contraction, ATP is needed for metabolic reactions.
-To break down one glucose into pyruvate molecules in Glycolysis 2 ATP molecules 4 ATP molecules are produced for a net addition of 2 ATP molecules.
-An inorganic carbon is converted into sugar by ATP in photosynthesis.
Cell replication is important for reproduction of body cells and reproduction of gametes. Which type of reproduction occurs only in gametes
Answer:
meiosis
Explanation:
meiosis occurs in reproductive organs
Which of these is an example of an adaptive (or specific) immune response?
A.
A person's immune system responds to an insect bite by increasing blood flow to the area and causing it to become inflamed.
B.
A person's immune system recognizes that a bacterial infection is present and signals the hypothalamus to increase body temperature.
C.
A person's immune system recognizes viral particles due to a previous vaccine and creates antibodies to fight off the resulting infection.
D.
A person's immune system responds to dirt entering the eye by increasing tear flow and flushing the dirt out of the eye.
Answer:
I'm not quite sure but I believe the answer is C.
Explanation:
Flat bones have surfaces composed of ______ bone with internally placed ______ bone. Multiple choice question. compact, spongy
Answer: compact, spongy
Explanation:
Flat bones have surfaces composed of (compact) bone with internally placed (spongy) bone.
Flat bones are typically thin, although they're often curved. Some examples of flat bones are the cranial in the skull, scapulae which is known as the shoulder blades, ribs, and sternum. They're an attachment for muscles and are used in the protection of internal organs.
which best describes a difference between transcription and dna replication
How do you measure the area of the peepal leaf?Explain
Answer:
Lay the leaves to be measured on a 1-cm grid and trace their outlines. Count the number of square centimeters. Estimate the area of the partial squares. ... Do not include the area of the stem (petiole) in your calculations.
