Hair grows out of little pockets in your skin, called follicles. Here's how it happens:
Your hair begins growing from a root in the bottom of the follicle. The root is made up of cells of protein.
Blood from the blood vessels in your scalp feeds the root, which creates more cells and makes the hair grow.
The hair gets pushed up through the skin as it grows, passing an oil gland along the way. The oil gland adds oil to the hair and keeps it shiny and soft. It can make it greasy, too. That's why you need to wash your hair.
The hair dies by the time it is long enough to poke out through the skin. Yes, hair is dead. That's why it doesn't hurt to get a haircut.
Hair on the rest of your body goes through this same process, but the whole cycle only lasts for a month or so. That's why body hair does not grow very long in length like the hair on your head does.
Here are some facts about follicles and your hair:
You are born with all of the follicles you will ever have — about 5 million.
You have about 100,000 follicles on your scalp, which is the skin on your head.
Hair grows very fast and male hair grows faster than female hair. The only part of your body that grows faster is bone marrow, the soft stuff inside your bones. The hair on your head grows about 6 inches a year. So, even though it's one of the fastest-growing things on your body, it takes a while to grow it really long.
Some follicles stop growing hair as you get older. This happens more in some people than in others. That's why some people get thinner hair when they get older, or go bald.
Which of the following is NOT a difference between normal cell division and cancer
cell division?
O Normal cells recognize signals that tell them to stop and start the cell cycle, but cancer cells
do not
Normal cells can invade other tissues, but cancer cells cannot
In normal cells, DNA is replicated correctly, but in cancer cells DNA is mutated
O Normal cells communicate with each other, but cancer cells do not
In normal cells, DNA is replicated correctly, but in cancer cells DNA is mutated. This is not a difference between normal cell division and cancer cell division. Thus, option B is correct.
What is Apoptosis?
Apoptosis is the process in which cells are destroyed or killed for the purpose of controlling their development and growth. The normal cells follow this process but the cancer cell do not response to it and keep growing.
Normal cells can invade other tissues, but cancer cells cannot. In normal cells, DNA is replicated correctly, but in cancer cells DNA is mutated.The difference between a normal cell and a cancer cell is that a normal cells undergo while cancer cells don't Also, normal cells respond to signals while cancer cells don't.
Cancer cells are grow in the absence of signals telling them to grow. Normal cells only grow when they receive such signals. Ignore signals that normally tell cells to stop dividing or to die which is the process known as programmed cell death.
Therefore, In normal cells, DNA is replicated correctly, but in cancer cells DNA is mutated. This is not a difference between normal cell division and cancer cell division. Thus, option B is correct.
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According to the endosymbiotic theory, which organelles were believed to be once simple prokaryotic cells?
A. Mitochondria and Endoplasmic Reticulum
B. Endoplasmic Reticulum and Chloroplast
C. Endoplasmic Reticulum and Ribosomes
D. Mitochondria and Chloroplast
An element in a similar period to carbon would be______.
A. chlorine
B. magnesium
C. hydrogen
D. fluorine
Answer:
D
Explanation:
fluorine
Question 10 of 10
Three servants were punished after they tried to escape. Two were white, and
one was black. The white servants had their contracts extended; the black
servant was ordered to serve for the rest of his life. Why were the
punishments different?
A. Because of the initial length of the servants contracts
B. Because of the servants' race
O C. Because of the servants different skills
D. All of the above
SUBMIT
The coyote will become the apex predator and
greatly reduce the populations of foxes.
Gray Wolf
Elk
The coyote population will decrease because t
he gray wolf is the
coyote's main competition for food sources.
Insect
Beaver
Coyote
O
If another wolf is introduced to fit the same ni
che, the coyote population will decrease.
FOK
Plant
Fish
4.
As the number of coyotes increase, the numbe
r of beavers will decrease.
Observe the food web shown above. If the gray wolf became extinct,
what conclusion about the coyote population would not be valid
based on the relationships shown in the food web?
CLEAR ALL
Answer:
No, coyote will not become the apex predator.
Explanation:
No, coyote will not become the apex predator but greatly reduces the populations of foxes in order to reduce competition for available resources. Yes, The coyote population will decreases because t he gray wolf kills coyote to avoid competition for food resources. If another wolf is introduced to fit the same ni che, the coyote population will decrease because the wolf feeds on coyote. As the number of coyotes increase, the number of beavers will decrease because coyote feeds on beaver. If the gray wolf became extinct, the coyote population increases in that location due to no predator.
___ is the type of active transport that moves large molecules into the cell
A change in an organism’s body is a(n) ____________. A change in the environment is a(n) ___________.
A. association, condition
B. chemical signal, display
C. internal stimulus, external stimulus
D. instinctive, learned
Answer:
chemical signal and display
Explanation:
What are bio molecules?
Answer:
a molecule that is produced by a living organism.
Explanation:
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Parents and their offspring are usually very similar, but always slightly different. For example, certain moths can have offspring with either dark or light wings. Almost everything else about the moths is nearly identical, but the wing color and pattern may look very different. If the moths live in a forest with trees that have very dark bark, which newborn moth would have a survival advantage, the light winged moth or the dark winged moth? A) The dark winged moth, because its color will help it fly away from predators. B) The light winged moth, because its color will help it fly away from predators. C) The dark winged moth, because its color will help it blend with the environment. D) The light winged moth, because its color will help it blend with the environment.
Answer:
The answer is A.
Explanation:
Moth with dark wings under the tree with dark bark have a higher chance of surviving as its wings protect them from predator due to similar colour features.
Answer:The answer is C.
Explanation:If the bark is dark, then a dark winged moth will blend.
organisms may contain up to five levels of organization within their bodies. which level of organization is best represented by the liver
Answer:
Among the five levels,Liver shows third level of organisation. The 5 organisations in our body are cells--Tissues--Organs--Organ system--Human body.
HURRY PLEASE
Which event is most likely to produce air pollution that would be harmful to human health?
1. the spread of a forest fire to several thousand acres
2. steam rising from a grate in a sidewalk
3. the release of steam generated at a nuclear power plant
4. water evaporating from the surface of a swimming pool
Answer:
Number 1
Explanation:
The smoke from the fire will go everywhere and shortly but surely cause air pollution. hope this helped
Answer:
The spread of a forest fire because it would kill the trees that are producing a mass amount of oxygen for us to use. The Amazon rainforest for example makes up a whole 30% of Earth's entire oxygen supply.
Explanation:
Which food items can be broken down mostly into amino acids
Answer:
all bc it is
Explanation:
The total volume of plant cells is often significantly greater than the total volume in animal cells. The most reasonable explanation for this observation is that:_______
a. The total volume of plant cells is often significantly greater than the total volume in animal cells.
b. The most reasonable explanation for this observation is that plant cells have a much more highly convoluted (folded) plasma membrane than animal cells.
c. Animal cells are spherical, whereas plant cells are elongated. plant cells are capable of having a much higher surface-to-volume ratio than animal cells.
d. Plant cells contain a large vacuole that occupies much of the volume of the cell.
Answer:
d. Plant cells contain a large vacuole that occupies much of the volume of the cell.
Explanation:
The vacuole is a membrane-bound organelle which is often found in plant and fungi cells, as well as in certain bacteria, protists and animal cells. The vacuole is filled with water that forms a solution containing inorganic and organic compounds. The size of the vacuole may vary depending on the requirements of the specific cell type. In plant cells, vacuoles often occupy an important fraction of the overall cell volume and play key roles during growth and development, influencing diverse cellular functions ranging from photosynthesis to transpiration.
What happens to the Volume of gas when Thermal Energy changes?
Answer:
It increases.........
Answer: At high temperatures, the gas turns into a plasma
Explanation:
When you heat a gas, both its vapor pressure and the volume it occupies increase. The individual gas particles become more energetic and the temperature of the gas increases.
what’s the answer to this question?
Complete the following table that lists the effects of changes in membrane permeability and extracellular concentration for different ions: You should be able to predict the effect that each condition will have on the resting membrane potential. The membrane potential might be expected to depolarize (D), hyperpolarize (H) or not change (NC).IONS Chargepermeability (resting) Increase membrane permeability Increase extracellular concentrationsodium potassium chloride calcium
How does dr. Abooker hope to apply has work to human health
If the top level consumers were eliminated from a food web would the populations in the levels below them increase without bounds
Answer:
That isn't true
Explanation:
That is not true bc if the top level consumers were removed from the food chain, then the level below would become the top level of the food chain. If that happened then the level below the NEW top level of the food chain would still be getting eaten and the food chain still goes on, just with one missing level.
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Why are you white? /j
Answer:
Michael Scott's Dunder Mifflin Scranton Meredith Palmer Memorial Celebrity Rabies Awareness Fun Run Pro Am Race for the Cure
Explanation:
What statements accurately describe matter? Check all that apply
The answer fam is........ Matter is made up of atoms, atoms cannot be divided If you have those answers then it's them my guy..
Answer:
matter is anything and everything. matter is what takes up space or anything has any amount of volume in it.
Explanation:
example of matter would be anything from a microscopic cell, to your pencil, to the ocean, etc. anything that takes up any amount of space.
1. Each person's DNA contains certain genes that code for specific traits. List at least 15 traits that make up your body's appearance. Your traits are things like eye color, arm length, or foot size
Freckles, hair color, complexation, hair line, dimples, ect.
Answer/Explanation:
HeightHair colorEar lobe shapeSkin colourHair line (widow's peak)Eye shapeHair textureDimplesCleft chin (butt chin)FrecklesNose shapeLength of second toeTeeth gapsBent vs straight pinkyPosition of eyebrowsVariation in DNA alters the sequence of genes that control many physical traits. Above are examples of traits where some of the genes controlling the traits are known
Please help me with this bio work thanks
In a nuclear reaction, the fuel pellets are split using what ? This also causes a chain reaction
Answer:
A nuclear reactor is driven by the splitting of atoms, a process called fission, where a particle (a 'neutron') is fired at an atom, which then fissions into two smaller atoms and some additional neutrons. ... Two examples of nuclear fissioning of uranium-235, the most commonly used fuel in nuclear reactors.
Explanation:
Which of the following is a main difference when comparing an animal cell and a plant cell?
Plant cells lack cell walls and form fixed shapes.
Animal cells have chloroplasts and mitochondria.
Animal cells lack cell walls and are irregular in shape.
Plant cells have one vacuole, produce chloroplast, but do not have mitochondria.
Answer:
I think the answer is animal cells lack cell walls and irregular in shape animals do not have chloroplast because they do not manufacture their own food so chloroplast is only found in plants plants have cell walls
Answer:
its C
Explanation:
what is the order of atp-adp cycle
Which process makes it possible for all the major organs of the body to be formed by week 10 of human
development?
O growth
O fertilization
O self-renewal
O differentiation
Answer:
Differentiation
Explanation:
The process that makes it possible for all of the body's major organs to be formed by the tenth week of gestation is known as differentiation.
4. If the lab technician mistakenly added glucose instead of lactose in the medium, how
would the results and your interpretation of the results differ?
4. During which part of Interphase does the cell grow?
Answer:
during the interphase or G1 phase or G2
Explanation:
the cell spends most of there lives there until it makes duplicates
As temperature changes, how does the movement of particles change? Why does this happen?
Answer:
As temperature changes particles movement slows down, because they are not used to certain temperatures.
Explanation:
All healthy, highly productive ecosystems provide which of these essential ecosystem services that involve gases in the atmosphere?
A. Increasing carbon dioxide levels in the atmosphere by the action of plants and animals.
B. Removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms.
C. Removing water vapor from the atmosphere and using it to support plant growth.
D. Removing methane from the atmosphere and storing its carbon and hydrogen in the tissues of organisms.
Answer:
All healthy and highly productive ecosystems provide the essential ecosystem services that consist in removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms (option B).
Explanation:
The carbon cycle involves the path that this element has between the biosphere and the atmosphere.
As part of the carbon cycle, the carbon dioxide (CO₂) produced by the combustion of fossil fuels or organic matter and by the elimination of animals passes into the atmosphere, and must be removed.
Photosynthesis removes CO₂ from the atmosphere and converts it into organic compounds that are stored in plants. Plants, vegetables and fruits consumed by animals contain carbon that is incorporated into other living beings.
In a healthy and efficient ecosystem, CO₂ is removed from the atmosphere to become part of living beings, as organic matter.
The other options describe processes that are not related to the actual question formulation:
A. Atmospheric CO2 does not increase due to the action of plants.
C. Water vapor is not removed to contribute to plant growth, but rather the plants absorb water from the soil.
D. Methane is not removed from the atmosphere or incorporated into living systems.