What central theme of biology helps explain why various cells can look so different from one another? see section 7.3 ( page 154) ?

Answers

Answer 1

The Cell theory states that.. 1)all living things are composed of one or more cells 2)cells are the smallest units of structure & function of living things 3)New cells are produced by preexisting cells The 2 Domains that include all organisms that are made of prokaryotic cells are- bacteria and archaea. these organisms are multicellular and may form colonies cytoplasm fluid part of the cell plasma membrane : membrane surrounding the cell ribosomes : solid,molecular organelles that make proteins Circular DNA molecule in prokaryotes where genes are found plasmids cell wall rigid structure around plasma membrane Used for swimming (moving) through a liquid flagellum used to adhere to surfaces (like your teeth) fimbriae as a cell increases in diameter, its volume increases more than its surface area. the surface area to volume ratio is reduced since the surface is where the cell exchanges substances w/its environment, the reduction in this ratio decreases the rate of exchange. thus making cell work less efficient

Related Questions

What is the strongest evidence suggesting that all modern day cells are related to one other?

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The answer could be the fact that all species posses 23 universal proteins. These proteins vary slightly in some DNA sequences but are pretty much the same. These proteins are responsible for tasks such as DNA replication and translation from DNA to proteins. These activities are crucial to all forms of life. The presence of these universal proteins suggest that modern life evolved from a single common ancestor.

A person throws darts at a dart board and the darts are spread all around the bullseye, but not grouped together in one general area. What statement best describes this situation? A) The dart thrower is accurate and precise. B) The dart thrower isn't very accurate or precise. C) The dart thrower is accurate but not very precise. D) The dart thrower is precise but not very accurate. Eliminate

Answers

B because he was precise to get them all in the same are but not accurate to get any in the bullseye

Answer:

Answer C)

Explanation:

The person throwing the darts it is not successful in reaching the intended target, but the darts are around the bullseye, therefore the person is accurate. This person is not precise because the darts are not close to each other. This difference between precision and accuracy its used for scientific purposes.

A 6-year-old child fell off his bike and scraped his knee. describe the first stage of wound healing.

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The first stage of wound healing is Inflammatory stage, characterized by dilation and increased permeability of capillaries, movement of white blood cells and plasma into the area, clot formation, and removal of foreign material and cell debris. A inflammatory stage is the body's natural way to injury and it is the stage where the characteristic signs of inflammation can be seen.

What is the role of decomposers in the cycling of matter in the biosphere?

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The decomposers maintain the natural balance of matter during the cycle in which inorganic matter is transformed into organic by the photosynthesis that will pass from one consumer to another in the food chains. When these and the producers die or eliminate of their body the products of waste these substances return to the soil the mineral matter.

Answer:

Nutrient Cycling

Explanation:

Decomposers break down dead organic material to release the nutrients and elements like carbon, oxygen, and phosphorus back into the soil.

All the members of a species within a particular area are referred to as a __________.

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they are referred to as a colony

The instructions for growth and development are in ________.

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The instructions for growth and development are in DNA. It is compose of molecules which is called nucleotides. Each nucleotide includes a phosphate group, a sugar group and a nitrogen base. There are four types of nitrogen bases. There are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.

What describes why wetlands are important to the water cycle

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Wetlands are important features in the landscape that provide numerous beneficial services for people and for fish and wildlife. Some of these services, or functions, include protecting and improving water quality, providing fish and wildlife habitats, storing floodwaters and maintaining surface water flow during dry periods. These valuable functions are the result of the unique natural characteristics of wetlands.

What kinds of environmental factors would cause such a crystal to form?

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Hot fluids cause the crystals to become very large

The _______________ completely covers the surface of the protoplasm.

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The plasma membrane completely covers the surface of the protoplasm.

The plasma membrane, or plasmalemma, is the structure that completely covers the surface of the protoplasm, serving as a protective barrier and regulating the passage of substances into and out of the cell.

The structure that completely covers the surface of the protoplasm is the plasma membrane, or plasmalemma. This membrane serves as a protective barrier that regulates the passage of substances into and out of the cell.

In some protozoans, a structure called the pellicle is present just inside the plasma membrane, providing additional rigidity.

Underneath the plasma membrane, ectoplasm and endoplasm form distinct layers of cytoplasm that contribute to complex cell shapes.

The cell wall is another structure described in plant, fungal, and some protistan cells; it is external to the plasma membrane and offers protection, support, and shape to the cell, but it is not the surface that covers the protoplasm in animal cells such as protozoans.

Instead, in protozoans, it's the plasma membrane that completely covers the protoplasm.

Choose which tissue type likely functions to add support to an organ.

Answers

The tissue type that most likely functions to add support to an organs is what you called hyaline cartilage. A hyaline cartilage is a matrix that is made up of chondroitin sulphate and type II collagen, both of which are also found in elastic cartilage.

Final answer:

The connective tissue, specifically types such as cartilage and bone, is designed to provide support and maintain the structural integrity of organs. They offer flexible and rigid frameworks respectively and withstand various physical stresses to maintain organ stability.

Explanation:

Tissue Type That Functions to Add Support to an Organ

The connective tissue is the type that likely functions to add support to an organ. Within the human body, there are various types of connective tissues that each play a crucial role in supporting and maintaining the structure of organs. A particular form of supportive connective tissue includes both cartilage and bone. Cartilage provides a flexible yet strong framework that can resist compression, making it an essential component in joint areas and the growing portions of bones. Bone, on the other hand, offers a rigid structure due to its mineralized matrix, allowing for the protection of internal organs and enabling posture maintenance.

Dense connective tissue proper, also functions as supportive tissue. It is richer in fibers and is found in tendons and ligaments where strength along one axis is especially important. It is also seen in organ capsules and artery walls where strength in multiple directions is needed.

The supportive role of connective tissues is integral to the functionality of organs, ensuring they can withstand various physical stresses and maintain their shape. Knowledge of how these tissues contribute to organ stability is a critical aspect of understanding human anatomy and physiology.

A/an _____ is a sudden and widespread outbreak of disease within a population or area.

Answers

Epidemic- is a sudden and widespread outbreak of disease within a population or area..

An epidemic is a sudden and widespread outbreak of disease within a population or area.

What is epidemic?

An epidemic is defined by the Centers for Disease Control and Prevention (CDC) as an unexpected increase in the number of disease cases in a specific geographic area. Epidemics include yellow fever, smallpox, measles, and polio.

An infectious disease epidemic can occur if the virus, bacteria, or other cause of the disease has recently become stronger, is introduced somewhere it has never been before, or discovers new ways to enter the bodies of those affected.

An epidemic is defined as an increase in the number of cases of a disease that is greater than what is normally expected in that population in that area.

Thus, a sudden outbreak of disease is an epidemic.

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What is some 3 facts about toluache xuchal\?

Answers

xuchal is something that will make someone pass out (sleeping)
Xuchal is made from ground seashells and tobacco
Xuchal is used as a sleeping potion

This works much better, and after drinking from a xuchal contaminated pond, the pack of dogs quickly falls asleep

In which tissue system would you find root hairs and the epidermis? A. Vascular tissue B. Dermal tissue C. Apical meristem D. Ground tissue

Answers

its C hope this helps

the answer is B. DERMAL TISSUE

Give an example that illustrates the involuntary control of cardiac muscle tissue

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There are two types of muscles, voluntary and involuntary. In order to answer this question, you need to know the difference between the two. Voluntary muscles are ones that you can control. For example, by doing a push up or waving your arms around you are using your muscles voluntarily. In contrast, involuntary muscles are ones that you cannot control. You heart contains muscle tissue that cannot be controlled voluntarily. One example that illustrates the involuntary control of cardiac muscle tissue is the shortening in the bands of muscle in your heart, resulting in a decrease in chamber size, which then ejects blood to the pulmonary and systemic vessels.

A researcher knows the geographic range of a population of butterflies. given only this information, what else can she deduce about this butterfly population?

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A geographic range of an animal can give us a lot of information, for example:

- the climatic conditions it adapted to: does it like wet or a dry environment? Does it like heat?
-the parasites/predators that these butterflies may encounter - by knowing who else lives in that area, we can guess what can threaten the butterflies
-similarly, we can guess what food is available to the butterflies.

You are jogging with a friend on a nearby trail one summer, after about 45 minutes he complains of dizziness and feels sick to his stomach. what might be wrong with your friend and what should you do to treat his symtoms

Answers

He might be dehydrated, give him some cool water to drink and let him rest a little before getting treated.

He was playing for a long period, his body might be dehydrated and should give him water to drink and let him rest before getting treated.

What do you mean by dehydration?

When an individual of any age group lose more amount of fluid from his body than he takes in, his body does not have enough amount of fluid to do normal function.

This condition is known as Dehydration.

The most common cause of dehydration are sweating, severe diarrhea and vomiting.

Severe condition of dehydration is mostly seen in young children and older adults which is more dangerous.

The most common treatments for dehydration are rehydrating methods with more amount of liquid intake, electrolyte replacement and treating diarrhea or vomiting, if needed.

During summer body get dehydrated if adequate amount of water is not taken.

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When justin was injured in a car accident, he lost consciousness for 10 minutes. he had sustained numerous lacerations, a right femoral contusion, and, most importantly, had a large open wound on his head. when he arrived at the emergency room, the attending physician immediately ordered which neuroimaging technique to rule out any damage to the soft tissue of the brain?

Answers

This would require an MRI. By using the magnetic waves, the doctor can figure out which tissues in the brain sustained damage (if any). In addition, the MRI can produce images that would not be as easily shown by CT scans.

Which type of homogeneous mixture cannot be filtered and does not scatter light?

Answers

A solution cannot be filtered, and does not scatter light

Explain the advantage for melanin granules being located in the deep layer of the epidermis

Answers

UV radiation has a penetration power that can go down to the dermis, when UVA, or to the deepest layer of the epidermis, when UVB. UVA and UVB are the type of radiation that's the most potentially dangerous for DNA damaging to happen. Melanin absorbs the UV rays reducing the damage that these may produce to the living cells of the dermis and deeper, just bellow these granules.

A new element has been discovered. Newelementium has 40 more protons than radon. It also has the same number of protons and neutrons. What would newelementium’s atomic number and atomic mass be? (Use the periodic table)

Answers

80.............................................

Answer:

Atomic number would be 126 and atomic mass 252.

Explanation: The atomic number is the number of protons in the nucleus of an atom. This number is the position they occupy in the periodic table.

On the other hand, the atomic mass is obtained by adding the number of protons and neutrons of a given nucleus.

Consequently, if Newelementium has 40 more protons than radon and acoording to the periodic table radon has 86 protons, the atomic number is calculated as follows:

1. 86 + 40 = 126

Newelementium would have 126 protons, therefore its atomic number would be 126.

Since Newelementium has 126 protons and the same number of neutrons, its atomic mass would be:

2. 126 (protons) +126 (neutrons) = 252

Newelementium atomic mass would be 252.

what are some possible factors that must remain constant during testing

Answers

- food intake before testing
-light
- time of day
-sleep
- age

A group of college students working on a project on bio-gas have found some bacteria in the bio-gas plant. These bacteria can utilize methane as their source of energy and do not need oxygen for their survival. What kind of bacteria could they be?

Answers

The kind of bacteria is called archaebacterial. Hope this helped:)

Answer: Anaerobic methanotrophs.

Explanation: These bacteria belong to the group of Archae. Methanotrophs are those organisms that use methane as sole source of energy. They are present near the environments where methane gas is present such as marshes, wetlands, and rice paddy.

Methanotrophs that do not need oxygen for their survival are known as anaerobic methanotrophs. Thus, the given bacteria are anaerobic methanotrophs.

What is the most common inorganic compound in living things?

Answers

Carbon, it's in most things on earth living and non

Which of the following is the most distal part on a human arm?
A. Shoulder
B. Upper arm
C. Lower arm
D. Hand

Answers

i am pretty sure is letter D. Arm

a that the answer i dont have a long answer

why did the Egyptians build pyramids for their pharos?

Answers

Egyptians built pyramids for their pharoahs because they wanted to bury their pharoahs, and they believed that with proper burial, the pharoahs were able to go to the afterlife

hope this helps

When one-month-old mai is sleeping, it often looks like she is smiling. this is an example of a _____ smile?

Answers

The appropriate response is the reflexive smile. Smiling amid earliest stages changes its importance over the primary year. The grins that infants show amid their first weeks constitute what is called reflex grinning and for the most part happen without reference to any outside source or jolt, including other individuals.

A client with rheumatoid arthritis arrives in the clinic stating, "i don't take any medications because they are too expensive." the client reports that family members are arranging for the medications to be obtained from another country. what is the nurse's best response

Answers

The nurse's best response is to point out that many medications can be obtained for a couple of dollars from walmart, and the client and his family should look into other options before shipping in medication from another country, because this is costly and unneccessary. No one should have to go without medication, and there are affordable cost options.

I need help on this paper for my honors bio matching the cell organelles to the description

Answers

4. Should just be Chloroplasts: Carbohydrates are made through Photosynthesis, which happens in the Chloroplasts.

7. The Phospholipid bilayer. Of course, it could just be the cell membrane, which has the double layer of phospholipids. Depends.

9. Umm, ribosomes and ER. But you already used these... Can you use these multiple times?

10. Mitochondria. (Well it could also be chloroplasts...)

11. I'm assuming the central vacuole, the center of the cells.

15. The nucleolus.

16. Endoplasmic Reticulum again...

17. DNA, Ribosomes... Cell membrane...

18. Chloroplasts

Do you have a bank for this?

Sorry if this isn't clear.

you spend c dollars on t number of t shirts. what is the dependent variable

Answers

The dependent variable, in this particular problem, is "c". The cost of the shirts DEPENDS on the number of t-shirts you buy.

Power and legitimacy existing together in a state is defined as

Answers

Answer:

AUTHORITY

Explanation:

APEX 100%

Power and legitimacy existing together in a state are defined as an authority.

What are the characteristics of authority?

The characteristics of authority are as follows:

It possesses the sequence of legal rights. The link of authority is incomplete without decision-making.Implementation is the characteristic that fulfills all the requirements essential for authority.

According to the context of this question, power is acquired along with legitimacy in order to introduce the knowledge and information that an individual possesses for delivering the characteristics of authority. The power of authority is given to individuals or groups of individuals in the form of position.

Therefore, power and legitimacy existing together in a state are defined as an authority.

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