Describe the characteristics of the keratinocyte membrane that restrict water movement across the membrane. If isolated keratinocytes are placed in a hypotonic solution for 24 hours, explain why there are likely to be far fewer cells at the end of this time than there were at the start.

Answers

Answer 1

Answer:

It has four layers and attach with each other with desmosome.

Explanation:

The keratinocytes are arranged in four different layers which are the stratum basale, stratum spinosum, stratum granulosum, and stratum corneum. These cells are attached with desmosome which is a membrane protein. The presence of these four layers made a barrier against damage done by heat, UV radiation, water loss, pathogens etc. There are fewer cells at the end of the time as compared to the start because may be of the water pressure on the membrane or these cells for a long time.


Related Questions

A fireman feels a door and it is hot from the fire on the other side due to blank

Answers

Answer:

A fireman feels a door and it is hot from the fire on the other side due to conduction. Explanation: One side of the door is touching the other, and it transfers heat. 16. The cause of weather systems on earth is convection and radiation.

Explanation:

Correct me if I am wrong?

But hope it helps you!

Explain two (each) methods of micro-organism control for Malaria and Rabies

Answers

Explanation:

Vaccination and use of quinine drugs

Land breeze happens at night.

A. True

B. False

Answers

the answer is A therefore it is true

Answer:

true

Explanation:

the answer is A

land breeze is the opposite of sea breeze.

sea breeze accurs during the day

Land breeze occurs during night

can someone help with this question its due in 10 minutes

Answers

Answer:

The waves have eroded the sand and then deposited some of it in the water.

Write the tRNA anticodons for the following strand of mRNA.
AGA GAU UCA GCU AGC ACG AUA

Answers

Answer:

UCU CUA CGA UCG UAU

Explanation:

Those are the answers above.

Chemostat culture with protozoa Tetrahymena thermophila protozoa have a minimum doubling time of 6.5 hours when grown using bacteria as the limiting substrate. The yield of protozoal biomass is 0.33 g per g of bacteria and the substrate constant is 12 mg l1 . The protozoa are cultured at steady state in a chemostat using a feed stream containing 10 g l1 of nonviable bacteria. (a) What is the maximum dilution rate for operation of the chemostat

Answers

Answer:

The correct answer is - 3.3 g/L.

Explanation:

It is known that if endogenous metabolism is not important then,

µnet = µmax = 0.693/doubling time.

Given:

doubling time = 6.5 hr, therefore,

µmax = 0.693/6.5 = 0.1/h

Formula:

First, maximum dilution rate Dmax,

Dmax = µmax*[S0]/{Ks + [S0]}.........(1)

Steady-state cell concentration, X

X = Yx/s{[S0] - KsD/(meumax - D)..........(2)

Solution:

Yx/s = 0.33 g/g-substrate;

Ks = 12 x 10-3 g/L; [S0] = 10g/L,

puting value in (1)

Dmax = 0.1 * 10 / (12 x 10-3 + 10)

= 0.1/h.

Now it is given that operating D is 1/2 of Dmax, therefore,

D in our case will be = 0.05/h

concentration of protozoa cells from equation (2).

Therefore, X = 0.33*{10 - 12 x 10-3 * 0.05/(0.1 - 0.05)} = 3.3 g/L.

Crossed extensor reflex is a

Answers

Answer:

The crossed extensor reflex is a type of motor response that occurs to tactile stimulation of a lower limb. This, like other reflexes, is an indication of the proper integration and development of the central nervous system.

Explanation:

Stimulation on one side of the body can produce, in addition to the ipsilateral response. The crossed extensor reflex is a type of motor response, reciprocal innervation is involved: the flexor muscles of the stimulated limb contract at the same time that the extensors of said limb are inhibited. Coupled with flexion of the stimulated limb, the reflex produces an opposite effect in the contralateral limb: the extensor muscles are activated and the flexors are inhibited, this cross-extension reflex increases postural support during withdrawal of the painful stimulus.

The interaction of the skeletal and muscular systems for movement is coordinated by which human body system.

A. Circulatory
B. Excretory
C.Respiratory
D.Nervous

Answers

Answer:

D: Nervous system

Hope this helps!

38. In asexual reproduction, a single
parent passes copies of all of its
genes to each of its offspring.
When is asexual reproduction in
plants advantageous?
F. when the environment is
unstable
G. when there is little competi-
tion for resources
H. when plants are well adapted
to the environment
I. when there are multiple dis-
ease agents in the environment

Answers

H. when plants are well adapted is the correct answer maybe

Asexual reproduction in plants is advantageous when plants are well adapted to the environment that is present in Option H, as plants that are well adapted to their environment are more likely to produce offspring that can thrive in that environment as well.

What is asexual reproduction?

Asexual reproduction allows for the efficient production of genetically identical offspring without the need for finding a mate or investing energy in gamete production, and this can be particularly advantageous in stable environments where there is little change and plants can thrive without the need for genetic diversity. In plants, asexual reproduction can occur through various means, including vegetative reproduction, where new plants are produced from parts of the parent plant such as stems, leaves, or roots.

Hence, asexual reproduction in plants is advantageous when plants are well adapted to the environment that is present in Option H.

Learn more about asexual reproduction here.

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why is the air temperature in the rain forest of Peru so warm?

Answers

Answer:

Because Peru is located between the equator and Tropic of Capricorn. Since it is in the tropics, one might expect Peru to be a country of extreme heat  and heavy vegetation.

Explanation:

TRUE or FALSE
Visible light has very short wavelengths.
If FALSE explain:


PLEASE HELP!!!

Thx

Answers

The answer is true: Visible light has very short wavelength

Cells convert food into usable energy in a structure known as the powerhouse of the cell, or the ________. vacuole vacuole chloroplast chloroplast nucleus nucleus mitochondria

Answers

Answer:

Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration. Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis

2. How much is the average temperature at depth of 10 km of earth surface?
A) 200 °C
C) 650°C
B) 900°C
D) 20°C​

Answers

How much is the average temperature at depth of 10 km of earth surface? Explanation: The heat is apparent from the increase in temperature of the earth with increasing depth below the surface. Although higher and lower temperature occurs, the average temperature at depth of 10 km is about 200oC.




Answer is 200 o c.

The average temperature at depth of 10 km of the earth's surface is 200°C. Thus, the correct option is A.

What is the average temperature?

An average temperature may be defined as the annual mean temperature of any geographical location which is estimated approximately by the average temperature of the maxima and minima for the warmest and coldest months of the year.

It is the principle that the increase in the depth below the surface of the earth ultimately leads to the rising of average temperature. This is due to the process of apparent heat.

It may be possible that higher or lower temperatures also occur. but the average temperature at depth of 10 km of earth surface should approximately remain 200°C. It is a factual type of question.

Therefore, the average temperature at depth of 10 km of the earth's surface is 200°C. Thus, the correct option is A.

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why many are dying because of having Co.vid Vaccine??​

Answers

Answer:

milllions of millions people

Honest answers please!! Which organisms' decline may reduce the curlew population? (1 point)
trees
O milkweed
O grasshoppers
O livestock

Answers

Answer:

Milkweed

Explanation:

Several species of milkweed are poisonous to range animals.

BRAINILEST PLEASE

The curlew population will be reduced by milkweed because some species of milkweed are poisonous to curlew.

What is a population?

A population is the total number of a species of organisms found in a particular habitat.

The population of organisms is affected by availability of:

food water matesas well as diseases

Milkweed is a plant specie.

The curlew population will be reduced by milkweed because some species of milkweed are poisonous to curlew.

Learn more about population at: https://brainly.com/question/1162019

 Pressure increases with depth toward the center of the Earth. In which layer would you expect the pressure to be the greatest?

Answers

Answer:

The pressure would be the greatest in the Outer core.

Answer:

hi

Explanation:

the presure would be gresest

temperature usually increase when water condenses. which behavior of water is most directly responsible for this phenomenon?

Answers

Answer:

the release of heat by the formation of hydrogen bonds.

Explanation:

Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).

Condensation can be defined as a process which typically involves the change in the physical state of matter from the gaseous phase into a liquid phase i.e water changing from gas (vapor in the air) into a liquid form.

Temperature usually increase when water condenses. This phenomenon is as a result of the release of heat (exothermic reaction) by the formation of hydrogen bonds in water i.e hydrogen-hydrogen bond in water molecules formed by the chemical elements; oxygen and hydrogen.

I will give Brainliest!!!!!!!

Answers

Answer:

synthetic:.

chemically processed

not environmentally friendly

durable

nylon polyester plastic

resistance to insect

natural

natural obtained

environmentally friendly

not durable

cotton

food for insect

I am not sure about wool and food for insect sorry

hope it helped

If all the offspring of a particular cross have the genotype Gg, what must the genotype of the parents be?

Answers

Answer:

GG and gg

Explanation:

Migrating fibroblasts can be treated with various chemical agents while they are migrating. Explain what you expect for each of the following conditions.
a. The cells are injected with large amounts of purified gelsolin, and the live cells are observed periodically.
b. The cells are treated with latrunculin A, the drug is washed out, and the live cells are observed periodically.
c. The cells are treated with a chemical fixative and prepared for electron microscopy. Their actin filaments are decorated with myosin S1 subfragments, and you examine in which direction the arrowhead-shaped decorations are pointing in the filopodia of the fixed cells.

Answers

Answer:

c

Explanation:

A rabbit population's birth rate is 200 rabbits born/year. The death rate is 150 rabbits dying/year.



Is the population of rabbits growing or shrinking? Explain by calculating the growth rate.

Answers

Answer:

It's growing

Explanation:

The growth rate is 50 rabbits per year

Crossing over plays a critical role in increasing the genetic variation among offspring of sexual reproduction.

a. True
b. False

Answers

Answer:

T

Explanation:

I Got It Right.

what is Classification?

Take 50 points​

Answers

Answer:Classification, in biology, the establishment of a system of categories on the basis of presumed relationships among organisms. The science of biological classification is commonly called taxonomy.

Answer:

Thanks

Explanation:

Thanks

What functions are performed by the large intestine's
normal flora?

Answers

These bacteria are important in digestion and in keeping your large intestine healthy. The good bacteria that live in your colon are called your normal flora. They help prevent bad bacteria from multiplying and causing problems.

Which best summarizes the article? achieve 3000 New Life at. Yellowstone

A. New life has appeared in Yellowstone 20 years after wildfires scorched the park

B. Wildfires burned 1375 square miles (4 856 square kilometers) in and around Yellowstone Park in 1988

C. Oficials in Yellowstone re examined a policy that allowed wildfires in the park

D. Drought once dried out trees in Yellowstone and helped fires spread out of control​

Answers

The answer for your question above is A

Which cell division phase is shown in the image?
A) metaphase
B) anaphase
C) prophase
D) telophase

Answers

Answer:

a

Explanation:

metaphase - the chromosome line up at the equator

Answer:

C. Anaphase

Explanation:

During anaphase, the chromatids line at the center

Scientists conduct many types of scientific investigations. Their efforts often include fieldwork, surveys, models, and experiments. Which statement about scientific investigations is true?




They rarely involve the collection of data under controlled conditions.

They follow exactly the same steps because there is only one scientific method.

They include multiple trials to increase the consistency of the data that are collected.

Their primary focus seldom includes comparing or describing the unregulated world.

Answers

C.)
Scientists must use multiple trials because one trial will never show the completed data.

Factors that control traits are called?

a. genes.
b. purebreds.
c. recessives.
d. parents

Answers

Answer:

A. Genes

Explanation:

PLEASE HELP!!
Which of these is necessary for gas exchange in the respiratory system?
a.At least 30% oxygen in the air
b.The exchange surface must be moist c.The air must be cooler than body temperature
d.The blood cannot be moving ​

Answers

Most likely A only because your respiratory system needs oxygen

How do you think Earth manages to have a continuous supply of oxygen, carbon dioxide, and nitrogen when they are constantly used by living things?

Answers

Answer:

It's all a part of a very complex cycle… one thing feeds into another making an almost infinite loop.

The problem with the existence of humans is that we are interrupting the cycle by pumping out carbon dioxide at unsustainable rates. Nitrogen based fertilizers are causing massive algal blooms causing fish die offs on unprecedented scales… but I digress.

Long story short: the Earth is a biosphere with a beautiful balance that it seems humans seem dead set (pun intended) to throw out of harmony into chaotic turmoil.

Explanation:

because yes

Earth manages to have a continuous supply of oxygen, carbon dioxide, and nitrogen when they exist constantly utilized by living things because it exists as part of a complex cycle named the nutrient cycle.

What is meant by nutrient cycle?The soil's minerals, decomposing leaves and wood, water from snowfall and rain, as well as species that live above and below ground (the soil is alive! ), all contribute to the nutrient cycle. Trees and other plants take up nutrients from the soil, both mineral and non-mineral, through their roots.These nutrients are kept in reserve by plants in their leaves, flowers, and other parts. When animals eat plants, the nutrients either go back to the ground or are delivered to the animals.Arthropods, earthworms, fungi, and bacteria in the soil break down dead plants and animals. The decaying matter is ground up and combined with the soil by arthropods and earthworms.Some of the more complicated substances can be disassembled and divided into smaller parts by fungi.

To learn more about the nutrient cycle, refer to:

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