Answer:
Basal stem cells for keratinocytes
Explanation:
Keratinocytes are epidermal cells located in the outermost layer of the skin (i.e., the epidermis). Moreover, the cells located in the basal layer of the skin are known as basal keratinocytes or basal cells. These basal cells are proliferative cells that undergo differentiation in order to form suprabasal epidermal layers. Merkel cells are neuroendocrine cells that are located in the basal layer of the skin (scattered among basal keratinocytes), which are attached to surrounding keratinocytes by intercellular junctions called desmosomes.
Down syndrome is a genetic disorder that is also called trisomy 21. A person with Down Syndrome has an extra copy of chromosome 21. What can you infer is most likely the genetic mutation that results in Down syndrome?
A: Nondisjunction during meiosis
B: Complete duplication of chromosomes during polyploidy
C: Translocation during genetic replication
D: Crossing over during meiosis
Answer:
A : Nondisjunction during meiosis
Answer:
Nondisjunction during meiosis, resulting in uneven distribution of chromosomes
Explanation:
I took the test and got it right good luck!
What happens first at each origin of replication?
enzymes eat nucleotides
enzymes unwind DNA
enzymes remove bases
enzymes kill viruses
Answer:
cell division takes place
Answer:
enzymes unwind the DNA at each origin of replication
If you were working for a pharmaceutical company as part of a drug discovery team, which of these enzyme inhibitors would you suggest as a productive avenue for drug development? Group of answer choices a compound that inhibits enzymes by significantly changing the pH throughout the body a drug to treat diabetes that irreversibly inhibits an enzyme in the metabolic pathway to synthesize glucose a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract a compound that acts as a competitive inhibitor for a digestive enzyme produced only in the presence of certain foods
Answer:
The correct answer is - a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract.
Explanation:
In the given all the situation or conditions that is practical and possible it the drug that develop to treat high blood pressure by reversibly inhibiting an enzyme that catalyzes the chemical that leads to constirctions of the blood vessels.
These chemical cause blood vessel constrict and that leads to high blood pressure therefore inhibiting such enzyme that use to produce these chemical is a practicle solution for high blood pressure.
Which of the following adaptations would you expect to find in an animal in the taiga biome, but not in the alpine? a. hibernation b. migration C. large lungs d. large paws
You would expect to find C. Large Paws in the taiga biome, but not in the alpine.
Answer:
D- Large pawls
Explanation:
edg
Question 5
20 pts
If enzymes could not be used during a reaction, which of the
following could be added to a system to make the reaction occur?
O energy (possibly heat)
water
0 product
O substrate
Answer:
substrate is wright
hope it may help you
What are the two function of sweat
Answer:
Its main function is to control body temperature. As the water in the sweat evaporates, the surface of the skin cools. An additional function of sweat is to help with gripping, by slightly moistening the palms.
Explanation:
Human-to-human transmission of plague is usually by Group of answer choices unsanitary conditions. the respiratory route. dog flea. rat flea. wounds.
Answer: The correct answer is respiratory route.
Explanation: Disease can be transmitted from human to human through respiratory route. This can occur when the infected person cough or sneeze into the air , some particles of the pathogens are released and there is any human around the infected person when he sneez or cough, the person tend to get infected by inhaling or breathing in the infected air.
If two individuals were heterozygous for freckles, which are a dominant autosomal trait, what percentage of their offspring would you expect to have freckles
Answer:
75%
Explanation:
Firstly, an autosomal dominant trait is a trait the becomes expressed in the presence of only one affected allele, which is the dominant allele. Freckles is said to be an autosomal dominant trait meaning that the presence of the dominant allele (F) makes a person have the condition.
According to this question, If two individuals that are heterozygous for freckles cross i.e. Ff × Ff, the following proportion of offsprings will be produced: FF, Ff, Ff and ff (see punnet square).
From the genotypic observation of the produced offsprings:
FF, Ff - possess freckles
ff - do not possess freckles
Since, 3 (FF, Ff and Ff) of 4 offsprings possess freckles, the percentage of offsprings expected to have the condition will be:
3/4 × 100 = 75%
What was Anton van Leeuwenhoek contribution in the development of cell theory
Answer:
animalcules
Explanation:
that is it i think
In what order does blood flow through the body and heart? A. Right atrium, left atrium, lungs, right ventricle, left ventricle, body. B. Right atrium, left ventricle, lungs, left atrium, right ventricle, body. C. Right atrium, right ventricle, lungs, left ventricle, left atrium, body. D. Right atrium, right ventricle, lungs, left atrium, left ventricle, body.
Answer:
answer is D
l
Explanation:
Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body's tissues through the aorta.
The statement that describes the order blood flows through the body and the heart is:
Right atrium, right ventricle, lungs, left atrium, left ventricle, body.What is blood?It is a red liquid with different shades that varies according to the amount of oxygen it has inside, that is, hemoglobin.
Characteristics of blood circulationIt is a necessary substance for oxygenation to occur between cells, as well as to regulate blood pressure.Each side of the heart is divided into an upper chamber called the atrium and a larger, lower chamber called the ventricle.The blood flows since it has left the right ventricle, has been oxygenated by the lungs and has returned to the left atrium through the pulmonary veins, it is carried to the left ventricle.Therefore, we can conclude that the main function of the blood is to ensure that oxygen and nutrients are distributed between the cells of each organism.
Learn more about blood circulation here: https://brainly.com/question/3346248
Someone, please help!
Answer:
Step 2: The right ventricle pumps the oxygen poor blood to the lungs via pulmonary valve. Step 3: The left atrium receives oxygen -rich blood and pumps it to the left ventricle. Step 4: The left ventricle pumps the oxygen-rich blood via aortic valve, submitting this blood through the entire body.
Explanation:
Use this website if you need more information. Good luck.
https://wa.kaiserpermanente.org/kbase/topic.jhtml?docId=tx4097abc
Is the cell an open or closed system? Explain your
answer using at least one example of a cell
organelle and its function
· In an open system matter and energy can be transferred
· In a closed system only energy can be exchanged
· In an isolated system neither matter nor energy can be exchanged
· The cell has to be an open system because it needs to exchange matter and energy and the only way to do so is through an open system
· As an open system the cell allows nutrients to enter the cell and waste products to exit the cell
· The cell does this through the use of a semi-permeable membrane
· It needs nutrients in the forms of glucose, ions and many other molecules.
· The nutrients can come into the cell through either passive or active transport
· In passive transport the nutrients naturally move from a higher concentration gradient to a concentration gradient.
· During active transport the particle need to move against the concentration gradient. To do this the cell needs energy to transport the materials. The energy comes in the form of ATP.
Which is NOT involved at the beginning
of a nerve impulse?
A. reaching the threshold
B. a strong stimulus
C. sodium leaving the cells
D. negative charge inside the cell
Links and random responses will be reported
Answer:
Explanation:
it would be c////////////////////
The characteristics of certain cell divisions are described in the following table.
Cell Division Characteristics
Characteristic Description
1 Takes place in skin cells
2 Forms cells that are identical to parent cell
Which type(s) of cell division do the two characteristics represent?
Both characteristics represent meiosis.
Both characteristics represent mitosis.
Characteristic 1 represents meiosis and characteristic 2 represents mitosis.
Characteristic 1 represents mitosis and characteristic 2 represents meiosis.
Answer:
both characteristic represent mitosis
The characteristics of certain cell divisions are described in the following table, the two characteristics represent is both characteristics represent mitosis.
What is mitosis easy definition?Mitosis is a Method in which a single cell divides into two identical daughter cells (cell division).
In this cell divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.
Thus, option "B" is correct, Both characteristics represent mitosis.
To learn more about the mitosis click here:
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CON
In this experiment, you will use a track and a toy car to
explore the concept of movement. You will measure the
time it takes the car to travel certain distances, and then
complete some calculations. In the space below, write a
scientific question that you will answer by doing this
experiment.
) Intro
Done
mous Activity
Answer:
How can we change the speed of a toy car on a racetrack to describe the car’s motion
Explanation:
A teacher gave the lab group shown below an "unsafe practice" warning. What is most likely the basis for the teacher's warning?
Write two adaptations of a plant leaf for the above mentioned function.
Answer:
Reduced number of stomata Reduces the transpiration rate Waxy leaf cuticle Impermeable to water, which stops evaporation
Explanation:
Answer:
hi
Explanation:
A water pipe bursting in the winter is a result of which type of weathering?
A. Biological
B. Exfoliation
C. Chemical
D. Freeze-thaw
Hurry!
Answer:
D
because water expands when it freezes
Which layer of Earth has the highest temperatures at 5000-6000 Celsius?
Answer:
Inner Core
Explanation:
The inner core is the most inner layer of the earth. The inner core contains iron, the iron in the inner core is not pure (so not just iron) scientists believe it contains sulfur and nickel and also smaller amount of other elements. The inner core is extremely hot it is somewhere between 9000 and 13000 degrees Fahrenheit (5000 and 7000 degrees Celsius).
explanation credit to: katnissdiv1 on weebly
In the dihybrid cross,
of the parents had black fur and black eyes.
The offspring
.
Answer: The offspring can have both 100% black fur and eyes or it can vary
In the dihybrid cross,
✔ both
of the parents had black fur and black eyes.
The offspring
✔ varied.
-
The predicted values for the four phenotypes form a
✔ 9:3:3:1
ratio. The simulated values
✔ approximately
match this predicted ratio.
On Edge.
[tex]what \: is \: photosynthesis \: {?} [/tex]
[tex]\sf\purple{Photosynthesis}[/tex] is a process by which phototrophs convert [tex]\sf\pink{light\:energy}[/tex] into [tex]\sf\red{chemical\:energy}[/tex] .
The word “photosynthesis” is derived from the [tex]\sf\blue{Greek}[/tex] words "phos" (which means “light”) and "σύνθ-εóîς" (which means “combining together.”) And so it means “combining together with the help of light.”
The process of photosynthesis occurs in [tex]\sf\green{green\:plants}[/tex] (the primary producers in a food chain) and a few other autotrophic organisms such as cyanobacteria, purple bacteria and green sulfur bacteria.
Following is the photosynthesis [tex]\sf\purple{formula}[/tex] :
︎︎︎ 6 [tex]CO_{2}[/tex]+ 6 [tex] H_{2}O[/tex] —> [tex] C _{6} H_{12} O_{6}[/tex] ([tex]\sf\blue{glucose}[/tex]) + [tex] 6 O_{2}[/tex] ([tex]\sf\pink{oxygen}[/tex]).
[tex]\large\mathfrak{{\pmb{\underline{\red{Mystique35 }}{\red{❦}}}}}[/tex]
which type of gas or gasses are ressponsible for the start of life on earth
Answer:
Before life began on the planet, Earth's atmosphere was largely made up of nitrogen and carbon dioxide gases. After photosynthesizing organisms multiplied on Earth's surface and in the oceans, much of the carbon dioxide was replaced with oxygen.
Explanation:
please mark me as brinalist
Describe the thickness of the uterus lining during
menstruation process.
Answer:
As the cycle progresses and moves towards ovulation, the endometrium grows thicker, up to about 11 mm. About 14 days into a person's cycle, hormones trigger the release of an egg. During this secretory phase, endometrial thickness is at its greatest and can reach 16 mm.
Explanation:
Answer:
During this timeframe, the uterus is in the proliferative phase. Estrogen induces growth of the functional layer of the endometrial lining, which enables it to grow from about 1-3 mm post cycle to 6-8 mm approximately. Days 12-16 of the menstrual cycle At this point, the endometrial layer is about 6-8 mm thick.
Explanation:
In cats, orange vs black fur is controlled by a single x-linked gene. The orange and black alleles are codominant; the intermediate phenotype is tortoiseshell.
-------------------------------------------------------------------------------------------------------------------
A mother and father cat have 6 kittens: two orange females, two tortoiseshell females, and two black males.
a. What is the mother cat's phenotype?
a) black
b) orange
c) tortoise shell
d) impossible
b. What is the father cat's phenotype?
a) black
b) orange
c) tortoise shell
d) impossible
c. What is the fourth possible phenotype for their offspring?
a) black female
b) orange male
c) tortoise shell male
d) they already had all the offspring with possible phenotypes
Answer:
a. b) orange
b. c) tortoiseshell
c. d) they already had all the offspring with possible phenotypes
Explanation:
The pharynx is the structure in the body that serves as a pathway of both air and food. How does the body make sure that food does not get into the lungs?
Answer: The body makes sure that food does not get into the lungs because the epiglottis closes the air pathway so that food will not enter it.
Answer:
food getting to the lungs will be aspiration
Explanation:
A flap of tissue called the epiglottis sits over the top of the trachea. This flap blocks food and drink from going down into the trachea when you swallow hence preventing food from getting into the lungs
give me brainiest please
Q10. Which of the following animal names should be present in the Red Data book?
Indian Monkey, Cow, Black bug, deer, Asiatic lion
i think asiatic lion in my veiw
Red data book contains the list of endangered species. Asiatic lions are declared as endangered because of their small population size.
What is Red data book ?A Red Data Book is a record of all the animal, plant, and fungal species that are in risk of extinction in a certain nation or state. The Red Data Book was created by the International Union for Conservation of Nature to protect endangered rare plant and animal species.
The Red Data Book aids in providing thorough information for studies and research on the animal species and subspecies that are in risk of extinction. The Red Data Book is one of the most significant concepts in the study of animal biodiversity.
Therefore, name of Asiatic lions, being endangered is in Red Data Book.
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A group of environmental activists in West Virginia wants to save a large forest. Which act will help them in this activity?
Answer:
The correct answer is - Eastern Wilderness Areas Act.
Explanation:
The Eastern Wilderness Act is an act to be which is thought one of America's greatest conservation achievements. This act heled in creating our National Wilderness Preservation System such as west Virginia forests from over ogging and destroying the forests. This act is mainly introduced to eastern region of the country in 1975 january. It is allowed in 13 states of eastern united states.
Thus, the correct answer is - Eastern Wilderness Areas Act.
‼️⁉️need answer ASAP ‼️⁉️Which property describes a mixture? Cannot be separated by physical methods. It has a Single Chemical composition. It cannot have more than one state of matter. It cannot be described by a chemical symbol or formula.
Answer:
Explanation:
id :- 257 473 5835 password:- 1234
Answer:
D.
Explanation:
Which part of the eye is simply an opening through which light passes?
iris
lens
pupil
retina
Answer:
Retina
Explanation:
The opening in the middle of the iris through which light passes to the back of the eye. Retina.
i really need help... i skipped my lessons and i will mark brainliest and im giving 50 pts for answers.
Answer:
What exactly are we supposed to help you with?
Explanation:
I am concerned.
