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Posted in Biology

1.compared to adults,a newborn breathes a. a quarter as ofter b.half as often c.the same amount d.four times as often 2.the cluster of air sacs at the end of each bronchiole is called a.bronchi b.traches c.alveoli d.bronchus 3.the flap of elastic cartilage that protect food from entering the larynx is called the a.epiglottis b.glottis c.larynx d.esophagus 4.when blood leaves the lungs it is a.oxygenated b.deoxygenated c.exchanging gases d.rich in carbon dioxide


Here are the answers to the given questions above:
1. Compared to adults,a newborn breathes a quarter as often. The answer is option A. A newborn breathes 30 to 60 times per minute and an adult breathes 12 to 20 breathes per minute.
2. T
he cluster of air sacs at the end of each bronchiole is called Alveoli. The answer is option C.
3. T
he flap of elastic cartilage that protect food from entering the larynx is called the epiglottis. The answer is option A.
4. W
hen blood leaves the lungs it is, oxygenated. The answer is option A.

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Explain why a population of Mouflon in the Indian Ocean descended from only two individual that had not experienced a loss of genetic diversity was so surprising to scientists.

When populations are dramatically reduced in size, the theory of genetic drift suggests that a loss of genetic diversity should be expected. In the case of the Mouflon, however, no such loss in diversity was observed. This result was extremely surprising to scientists because it meant that the theory of genetic drift does not always hold true.

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Biomes on Earth have exhibited changes throughout history that have been caused by a variety of factors. Over the past 50 years, the amount of tropical rainforest acreage found throughout the world has decreased from 14.8 billion acres to 8.6 billion acres due to deforestation. What factor is likely most responsible for the changes observed in the world’s rainforests?

Human activity is probably most responsible for the modifications witnessed in the world's rainforests.  

The humans thrive in the rainforests and affect it extremely. The activities like logging have resulted in the loss of almost 137 animal and plant species each day due to deforestation. The activities of humans like the production of toxic by-products, oil spills, and mining incidents, and the continuous dumping of wastes are endangering the rainforests and the species living in there.  

The humans also practice the slash and burn agriculture that then results in infertility of the soils and makes vegetation to stop growing. The lack of plants eventually results in an increase of carbon dioxide in the atmosphere, thus, causing global warming.  


Posted in Biology

Immature bone cells, or osteoblasts, manufacture a protein called osteoid as well as several hormones. Because of this, we would expect osteoblasts to contain numerous?

The correct answer that would best complete the given statement above would be the term RIBOSOMES. Since immature bone cells or osteoblasts manufacture a protein called osteoid as well as several hormones, we can expect that osteoblasts contain numerous RIBOSOMES. Ribosomes are a cell structure that makes protein. Hope this helps.

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1. Which of these is a physical property of wood? A. Wood can burn. B. Wood can rot. C. Wood does not rust. D. Wood is softer than coal.

I think the correct answer from the choices listed above is option D. A physical property of wood would be that wood is softer than coal. Physical properties can be observed or measured without changing the composition of matter. Hope this answers the question.

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Select the best description for each cycle: 1.Hydrologic A. photosynthesis and respiration 2.Rock B. erosion, deposition, metamorphism 3.Tectonic C. housed mostly in rock material 4.Carbon D. it's all about water 5.Nitrogen E. subduction, uplift, and mantle convection 6.Phosphorus F. it's all about special bacteria

The right matches are:

1.Hydrologic is matched with D. it's all about water

Hydrology is the science of the earth which is interested in the terrestrial branch of the water cycle, that is to say in the exchanges between the atmosphere, the terrestrial surface and its subsoil. We speak of hydrosphere to designate the part of the planet in which water is located.


2.Rock is matched with B. erosion, deposition, metamorphism

Rocks are natural materials generally solid and formed, essentially or entirely, by an assemblage of minerals, sometimes including fossils (especially in sedimentary rocks), glass resulting from the rapid cooling of a liquid (volcanism, friction .. .) or aggregates of other rocks. The rocks can be formed of a single mineral species (monomeral rocks) or of several (polymineral rocks):


3.Tectonic is matched with E. subduction, uplift, and mantle convection

Tectonics is the study of geological structures of kilometric scale and more, such as mountain ranges or sedimentary basins, and mechanisms that are responsible. This discipline is directly related to plate tectonics.

The lithosphere, the rigid outer shell of the Earth consisting of the crust and part of the upper mantle, is subdivided into plates, called tectonic or lithospheric plates.


4.Carbon is matched with A. photosynthesis and respiration

The 2 main carbon "reservoirs" most directly involved in this cycle are the atmospheric CO2 and the carbon constitutfs of living beings. During photosynthesis, CO2 and water combine (reduction reaction) under the effect of light energy (sun) to form carbohydrates.

Then, in all organisms, these carbohydrates are oxidized to reform water and CO2 during breathing. Part of the energy contained in carbohydrates is converted into ATP. Up to 35% of the CO2 fixed during photosynthesis is released during leaf respiration.


5.Nitrogen is matched with F. it's all about special bacteria

Special bacteria pick up nitrogen and release it in a form that can be assimilated by the plant

To be absorbed by the plant, the nitrogen present in the atmosphere in N2 form must undergo biological transformation processes carried out by microorganisms called nitrogen-fixing bacteria. These nitrogen-fixing bacteria have the main function of capturing the nitrogen present in the air, but also in the soil (thus limiting the losses in the aquifers), and to return it to the plant in an available and assimilable form. Nitrogen in soil is in NO3- form (soil nitrate) and nitrogen in air is in N2 form (atmospheric nitrogen).


6.Phosphorus is matched with C. housed mostly in rock material

Global phosphate mineral resources are estimated at more than 300 billion tonnes in 2014 (US Geological Survey). The largest sedimentary deposits are found in North Africa (Morocco), China, the Middle East and the United States. The exploited phosphorus deposits come mainly from sedimentary or marine deposits, but also magmatic deposits or guano from exotic marine birds.


Posted in Biology

The organism shown in the drawing usually reproduces through the _________ process called binary fission. A) asexual B) heterosexual C) isosexual D) sexual

The best and most correct answer among the choices provided by the question is the first choice or letter A. The organism shown in the drawing usually reproduces through the asexual process called binary fission. I hope my answers has come to your help. God bless and have a nice day ahead!

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Posted in Biology

Is blood sugar regulated by positive or negative feedback?

Blood Sugar regulates by negative feedback in order to keep the body in Homeostasis. 

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The slowest type of mass movement, which involves the lifting and contracting of soil particles over time, is called a.) a rockslide b.) an earthquake c.) creep d.) rockfall

HI there

i believe the answer is creep creep takes a long time to do its job so i believe this is your answer

hope this helped you!

Posted in Biology

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For the answer to the question above, A carnivore is an animal that gets food from killing and eating other animals. Carnivores generally eat herbivores, but can eat omnivores, and occasionally other carnivores. So my answer would be the third choice. Carnivore, Consumer.

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Posted in Biology

Bryophytes are also called

They are also called "Land Plants" that are non-vascular!

Hope this helps!

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That body parts are called "Homologous Organs" which are similar in origin & structure.

Hope this helps!

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Posted in Biology

What might happen to a person whose nervous sand endocrine systems fail to maintain homeostasis?

A failure of homeostasis -- the balance of essential physiological states -- means disaster for the organism. Failure to maintain body temperature leads to hypothermia or heatstroke. Failure to maintain energy balance can result in obesity and diabetes. Failure to maintain calcium balance in the blood leads to hypocalcemia or hypercalcemia. Failure to maintain water balance results in dehydration or hyperhydration. 

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The right option is; B.  

A virus that causes a common cold best describes a rhinovirus.

A rhinovirus is any of many common infectious viruses in humans and the primary cause of the common cold. Rhinoviruses can be transmitted directly from person to person through contaminated objects or through aerosols of respiratory droplets. Other diseases such as ear infections, sore throats and infections of the sinuses may also be caused by rhinoviruses.

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In the carbon cycle, how is carbon removed from the atomsphere

Oxygen from the atmosphere  is combined with carbohydrates to liberate the stored energy. Water and carbon  dioxide are byproducts. Notice that photosynthesis and respiration are essentially the opposite of one another. Photosynthesis removes CO2 from the atomsphere and replaces it with O2.

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Mr. Jones has blood type B and Mrs. Jones has blood type AB. What is the probability that they will have a child with blood type A if both of Mr. Jones’s parents were AB?

If both of Mr Jone's parents were AB, then the possible blood types of their children would be AA, AB, and BB. This means that Mr Jones has a pure type B blood. Using the Punnett square to determine the possible blood type of their children
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A | AB | AB
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The possible blood types of their children are AB and BB. So there is 0 probability that they will have a child of blood type A.

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Cold air has lower barometric pressure because it is less dense than warm air. A. True B. False

False is more likely the right answer. I've studied in biology in college. Your welcome:)

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A bird stalks, kills, and then eats an insect. Based on its behavior, which pair of ecological terms describes the bird? herbivore, decomposer producer, heterotroph carnivore, consumer autotroph, herbivore

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Explanation:

The carnivores are the animals that feed on the smaller organism for their energy. They can be as small as a bird and as bid as a lion.

Consumers are the organism that feed on the producers for their energy needs. Here, the bird is omnivores that feed on insect as well as on plants for their energy needs.

A bird feeding on insect is an example of consumer, carnivore.

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Generally, the leaves are green colored, due to the presence of chlorophyll, but during the fall, the amount of chlorophyll is decreased and the carotene gives a orange or yellow color to the leaves.

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The correct answer that would best complete the given statement above would be the first option. The responsible management (use and conservation) of the earth's resources indefinitely using science-driven policies and practices is called an environmental conservation trust. Hope this answer helps.

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Posted in Biology

The cell's internal transport system consists of a series of sacs and tubes collectively called

Though I am unsure of the answer myself, I've recently studied cells in school. I believe that the series of sacs and tubes are collectively called the endoplasmic reticulum, located mostly near the nucleus in the center of the plant or animal cell.

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