Answers
Answer:
Epidermis.
It is composed of keratinized, stratified squamous epithelium and is made up of 4 layers of epithelial cells depending on its location in the body. From deeper to superficial these layers are stratum Basale, stratum spinosum, stratum granulosum, and stratum corneum. The cells in all the layers except for stratum besele are called keratinocytes which is a cell that manufactures and stores the protein keratin.
Stratum Basale.
It is a cuboid-shaped stem cell that is a precursor of the keratinocytes of the epidermis. Two other cell types found in this basal cell are Merkel cells which function as a receptor and are responsible for stimulating sensory nerves that the brain perceives as touch. The second is melanocyte that produces melanin pigment which gives the skin its color.
Stratum spinosum.
It is spiny in appearance due to the protruding cell processes that join the cells via a structure called desmosome. The desmosome cell interlock with each other to strengthen the bond between the cell. Keratinocytes in the stratum spinosum stats synthesizing keratin and release water-repelling glycolipid that helps to prevent water losses from the body.
Stratum granulosum.
They are grainy in appearance due to further change in keratinocytes as they are pushes from the stratum spinosum. The cells become flat as their membrane thickens to allow the production of protein keratin which accolades as lamellar granules within the cells.
Stratum Lucidum.
It is a smooth and translucent layer of the epidermis situated above the stratum granulosum. Keratinocytes containing these cells are dead and flat. Stratum lucidum cells are packs with eleiden derived from keratohyalin which give these cells their transparency and provide a barrier to water.
Stratum corneum.
This is the most superficial layer in the epidermis and it prevents penetration of microbes and dehydration of underlying tissues.
Dermis.-This is the inner layer of the skin and has the following functions.
Reticular layer
Just below the papillary layer, we have a much thicker layer called the reticular layer composing of dense connective tissue. It contains elastin fibers providing elasticity to the skin enabling movement.
Hypodermis
Explanation:
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Related Questions
Please answer fast!
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Answer:
C
Explanation:
Two populations of birds with somewhat different coloration live on two different islands. When birds from the two populations are brought together, they produce young whose appearance is intermediate between the two parents. These offspring can successfully breed with each other or with birds from either parent population, and all offspring of these pairings appear intermediate to various degrees. According to the biological species concept, the two populations on different islands ___.
Answers
Answer:
represent a single species
Explanation:
According to the biological species concept, a species can be defined as a group of organisms that can potentially interbreed (i.e., mate) in order to produce viable and fertile offspring. Based on this concept, the cohesion forces that maintain the integrity of the species as a single group are 1-interbreeding between its members and 2-reproductive isolation mechanisms that prevent successful mating between organisms from different species. In this case, both bird populations represent the same species because when individuals of these populations are brought together they can interbreed to produce viable and fertile offspring.
1. How does the cell membrane allow animals to move without rupturing the cells in the body?
2. How does a cell membrane allow some molecules to pass right through the membrane?
3. Why is it important the some molecules (oxygen and carbon dioxide) be allowed to pass through the cell membrane without the use of a transport system?
4. How does the cell membrane allow the cell to reproduce into two separate cells?
5. In the lab, small bubbles would merge with the larger bubbles. How does this property of cell membranes demonstrate how a vesicle can transport substances from one organelle to another?
6. Cells require molecules that cannot simply pass through the cell membrane. Explain how the cell can use proteins to transport these molecules across the cell membrane.
Answers
.
Explanation:
1)The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell. Electron microscopic examinations of cell membranes have led to the development of the lipid bilayer model (also referred to as the fluid-mosaic model). The most common molecule in the model is the phospholipid, which has a polar (hydrophilic) head and two nonpolar (hydrophobic) tails.
2) simple diffusion across the cell plasma membrane. The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down the concentration gradient is , by simple diffusion.
3) some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to cross its hydrophobic or however, because they are charged the polar, they can't cross the phospholipid part of the membrane without help .
4) during fission a copy of the DNA is made and attached to the cell membrane as well. As this cell elongate in preparation for fission, the two DNA copies are pulled apart two opposite ends of the cell. New membrane material is deposited between the two ends of the cell, and a new wall grows between them .
5) UMASS STEM-ED From Bubbles to Cell Membranes Workshop. Bubble ... dynamic nature which can't be properly appreciated in a static textbook. ... the small thread through one of the straws.
6) example of passive transport and active transport across a cell membrane so, cell membranes are semipermeable meaning they have control over what molecules can or cannot pass through. Some molecules can just drift Inn.
What should an ecologist measure in order to construct a pyramid of biomass for an ecosystem? A. the biomass in each trophic level of the food web B. the total mass of all the organisms in a representative area of the ecosystem C. the total mass of all the organisms in the ecosystem D. the number of organisms in each trophic level of the food web
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Answer: When constructing a pyramid of biomass, the ecologist will produce a presentation of B.) the total mass off all the organisms in a representative area of the ecosystem.
Explanation: This type of ecological pyramid is determined by collecting organisms in each trophic level separately and finding their dry weight.
hope that helped! (:
Hi,
An ecologist measures in order to construct a pyramid of biomass for an ecosystem the total mass of all the organisms in a representative area of the ecosystem.
Therefore, Option B is correct.
Hope it helps you...
Answered by Benjemin ☺️
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How did Mendel prevent flowers from self pollinating in his experiments
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Help me with number 6 please its esay
Answers
Answer:
A
Explanation:
Learnt this 2 yrs ago in geography class
Answer:
a
Explanation:
Which of the following is NOT part of the cell theory?
a. There are many different types of cells with many different shapes and functions
b. The cell is the basic unit of life performing all necessary life functions
c. All living things are made of cells
d. All cells come from pre-existing cells
Answers
Answer:
Its a.
Explanation:
You got this
The inactive state of a seed or other plant part when conditions are not right for growth is ___.
1. Phototropism
2. Dormacy
3. Gravitropism
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A jogger has stepped in a pothole and sprained his ankle. What organ systems
have suffered damage?
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HELP ASAPP‼️‼️‼️‼️IT WOULD BE GREATLY APPRECIATED
Answers
Answer:
b
Explanation:
It's part of RNA
Answer:
B
Explanation:
When DNA goes to RNA, you have to find the matching pair. G goes to C, A to U, T to A, and C to G. Ask for any clarification!
URGENT PLEASEEEE
How and where is starch stored in the red cedar oak tree
ill mark brainliest to first good answer
Answers
Answer:
They are large molecules that blind readily with proteins , cellulose, starches and minerals.
Explanation:
it hides into leather
g Which on the list below is allowed in a Biohazardous waste ility of your PI or LSC to provide you with agent specific training in your lab: A. True B. False Work with microorganisms not known to cause disease in healthy adults is done at: A. Bio safety level 4 B. Bio safety level 3 C. Bio safety level 2 D. Bio safety level 1 Biohazardous waste boxes are provided by: A. Discounted pricing by Sourcing B. Work order by Facilities C. Custodial staff or EHS D. None of the above It is ok to use fuming chemicals in the biosafety cabinet because they are filtered and the air is cleaned before leaving the building: A. True B. False Before beginning work inside a Biological Safety Cabinet do all the following except: A. Disinfect the inside surface of the cabinet B. Turn on blower and let cabinet run for 15 minutes prior to work commencing C. Fill the cabinet with equipment and obstruct air flow D. All of the above You self-transport out of the USA all research samples without documentation: A. True B. False
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Answer:
True
False
Bio safety level 1
Custodial staff or EHS
True
All of above
True
Explanation:
Micro organisms are little organisms which are not seen by naked eyes. They can harm human and cause diseases in humans. The statement is true.
Which statement is correct?
A.
All organisms that can synthesize their food by means of photosynthesis are heterotrophic.
B.
All organisms that cannot synthesize their food by means of photosynthesis or chemosynthesis are heterotrophic.
C.
All organisms that cannot synthesize their food by means of photosynthesis are heterotrophic.
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Answer:
B. All organisms that cannot synthesize their food by means of photosynthesis or chemosynthesis are heterotrophic.
Explanation:
There are three ways for a plant to obtain their food, photosynthesis, chemosynthesis, and heterotrophic. Photosynthesis is when the plant makes it's own food. If it can not get it's food from chemosynthesis or photosynthesis, it has to be an heterotrophic plant. The answer to the question is B. All organisms that cannot synthesize their food by means of photosynthesis or chemosynthesis are heterotrophic.
Which of the following accurately describes an example of a vestigial structure?
After the loss of a single eye, with one eye still present, a patient is still able to see with one eye. The patient complains of
reduced vision and depth perception after recovery.
A patient is having severe abdominal pain due to a ruptured appendix. The patient has an appendectomy, in which the
appendix is removed. The patient recovers and notices no life changes due to this surgery.
O A patient has a benign mass on the head of the pancreas. The mass is removed, along with a portion of the pancreas. This
results in reduced insulin production in the patient, causing them to be incapable of using glucose for energy, without the
aid of medication. The patient will be required to take an insulin shot once daily.
O A patient has heart disease, and therefore needs a heart transplant. The patient's heart is then removed and replaced with
a functioning mechanical heart. The patient will remain on organ transplant rejection pills for the remainder of his/her life.
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Answer:
A patient is having severe abdominal pain due to a ruptured appendix. The patient has an appendectomy, in which the
appendix is removed. The patient recovers and notices no life changes due to this surgery.
Can buoyancy act between bodies in contact or not in contact??
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Answer:
Buoyancy is a force. It is an contact force. But why? Because it is a force that acts between two objects, opposite a body force.When is genetic drift a major factor in evolution
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please help
this is any multicellular living thing that obtains energy from sunlight or makes it own food
= ??
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Someone help me give me the answer
Answers
All camels are basically similar in structure. They have developed adaptations for coping with both heat and dehydration.
Which of the following does not benefit the camel as a means of preventing dehydration?
a.Camels can extract water from their solid wastes.
b.Camels' ears are lined with fur to keep out sand and other blowing matter.
c.Their kidneys are capable of concentrating urine to reduce water loss
d.Camels are able to locate water in any environment.
Answers
Answer: b
Explanation:
Camels ears are lined with fur to keep out sand and other blowing matter
The Cambridge family includes the unusually shaped Arabian camel (Camelus dromedarius), also referred to as the one-humped camel. This animal is perfectly suited to the harsh desert climate and high levels of heat stress. Thus, option B is correct.
What camels are adaptations for heat and dehydration?Camels have evolved to survive in extremely hot and cold climates.In contrast to many other mammals, camels store the majority of their body fat in their humps, which allows for better thermoregulation. It makes it easier for them to release heat from their body in hotter climates. Camels rarely perspire.
Camels are ideally suited for desert survival. They have developed wide, flat feet to disperse their weight across the sand, among other adaptations. Thin fur everywhere to allow for rapid heat loss, and dense fur on the top of the body for shading.
Therefore, The kidney may be able to retain water if the generation of cholesterol is reduced. Camels produce pee that is highly concentrated, retaining the maximum amount of water.
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Health researchers measure how often people exercise and how often the same people come down with the flu. The researchers find a negative correlation between the amount of weekly exercise and the number of flu symptoms in an individual. Based on this information, which of the following can we assume are TRUE?
a. People who exercise more tend to have the flu less often.
b. People who have the flu more often tend to exercise less.
c. Exercising causes people to be more healthy and less susceptible to the flu.
d. People who get sick do not have time to exercise.
e. Since exercise reduces the flu, this is really positive correlation because the result is good.
f. Since the flu is a bad thing, this makes it a negative correlation.
Answers
Answer:
a, b, and c
Explanation:
Generally, correlation measures the strength of the relationship that exists between two variables. A positive correlation means that the two variables have the tendency to either increase or decrease together while a negative correlation means that the two variables tend to move in opposing directions, that is, as one is increasing, the other is decreasing and vice versa.
Now, the researchers find a negative correlation between the amount of weekly exercise and the number of flu symptoms in the subjects. This means that the more the exercise, the lesser the number of flu symptoms and the lesser the exercise per week, the more the flu symptoms. Hence, the assumptions that can be made directly or indirectly from the findings include
People who exercise more, get sick or have flu less often.People who have the flu more are most likely exercising very little or not at all.Exercising causes people to be more healthy and less susceptible to the flu.The correct options are a, b, and c.
how does the issues/ problem affect the government
Answers
Binding of the lac repressor protein to the lac operator is regulated allosterically. This means that the presence of a specific small molecule that binds to the lac repressor controls whether the repressor can bind to the lac operator, and therefore whether the operon is turned on or off. Can you sort the following conditions based on whether they are associated with the lac operon being turned ON or turned OFF?
a. Allolactose is absent
b. Allolactose is present
c. RNA polymerase cannot transcribe the operan genes
d. The lac repressor protein cannot bind to the lac operator
Answers
Answer:
a. OFF
b. ON
c. OFF
d. ON
Explanation:
Allosteric regulation is a process by which a particular molecule activates or inhibits an enzyme, by binding to a site different from the active site of the enzyme. Allolactose is a disaccharide that binds to the allosteric site of the lac repressor protein, triggering a conformational change in the protein that prevents the binding of this repressor to DNA. Moreover, RNA polymerase (RNA pol) is an enzyme required for the process of transcription, and therefore when this enzyme cannot bind to operon genes the lac operon is being turned OFF. Finally, the lac operator is a nucleotide sequence where RNA pol binds, and the lac repressor binds to the lac operator in order to block the transcription of the lac operon.
Helppp me!!!!! ASAP
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MM=strong
Ii= intelligent
During spring in Colorado, ice on the mountain tops melts into water. Some of this water gets trapped in cracks in the mountain rocks. With winter, the water in the cracks refreezes into ice. When water freezes, it expands. This often will cause the cracks in the rocks to grow, and eventually, pieces of rock break off. What type of weathering is taking place?
A.
specific heat
B.
chemical
C.
biological
D.
physical
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Answer:
Physical
this type of weathering is known as freezing and thawing
Please look at the picture and answer ASAP
Answers
10. Imagine a seesaw, like on a children's playground. Which of the following drawings of a seesaw best represents equilibrium? Explain. help pleaseee
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Answer:
the first one
Explanation:
equilibrium- a state of physical balance.
so the first one looks the most balanced on both sides
Also if you look up "equilibrium seesaw" you see pictures that look similar to the first one
Help please with 4 super easy
Answers
Answer:
A Air pressure
Explanation:
What is one of the causes of mechanical weathering?
A. acid rain
B. oodation
C. animal actions
D. carbon dioxide
Answers
Answer:
answer is A hope it helps if it dont what can i help you with later.
Explanation:
Question 4 (2 points)
(03.05 LO
Which statement is true? (2 points)
Geothermal power is generated from moving water
Oil, a renewable resource, is processed to make
jet fuel
Wind power can turn turbines to generate electrical power
d
Propane, a renewable resource, is used in some heating systems.
Answers
Answer:
B is true
i took the test
Oil is a renewable energy resource. It is processed to make jet fuel. Thus, the correct option is B.
What are renewable energy resources?Renewable energy is the energy which is derived from natural sources which are replenished at a higher rate than they are being consumed. Sunlight and wind are the two such sources of energy which are constantly being replenished from the planet. Renewable energy sources are present in plentiful amounts and are found all around us.
Jet fuels are the energy fuels which are typically made by the blending and refining of various crude oils such as petroleum distillation products including naphtha, gasoline, or kerosene in order to meet the specific military or commercial specifications required.
Therefore, the correct option is B.
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Answer and I will give you brainiliest
Heeeeelp please
Answers
A, B, and AB
Explanation:
In a Punnett Square, individuals could be carriers for O but they could still be a result of AB blood.
Hopefully this is the correct answer you were looking for