The reason that the mail bed appears pink is the presence of a larger number of melanocytes in the underlying dermis
Complete question:
True or False: The reason that the nail bed appears pink is the presence of a larger number of melanocytes in the underlying dermis.
Answer:
False
Explanation:
Nails are composed of the lamina, which is a smooth, shiny, translucent, and keratinized structure. The nails are born the nail matrix. The newly formed nail slice along the mail bed, which is the plane surface under the nails.
The nail bed places under the nail and is composed of a thin epithelium, with no granulous stratum, and a few layers of parakeratotic cells attached to the nail.
The nail matrix and nail bed have melanocytes. Half of the melanocytes of the matrix produce melanin, while melanocytes of the nail bed are inactive.
The nail bed is laying over many small vessels that nourish it and provides a pink color to the nails.
What is the function of histamine in inflammation
(Will mark as brainliest)
Answer:
Histamine increases the vasodilatation, and also increases the vascular permeability in the immediate transient phase of the acute inflammatory reaction. This histamine also acts as a chemical mediator in acute inflammation. The receptors of histamine is also involved in acute inflammatory reaction .
Sodium metal reacts whit hydrochloric acid to produce salt and hydrogen gas. What are the reactants in this chemical reaction
Answer:
Na (sodium) and HCl (hydrochloric acid)
Explanation:
The products are the salt and hydrogen gas
Whenever you see the word react it means those are the reactants (usually whatever compound comes before and after the word). Because they are reacting with each other.
Whenever they say "is produced" those are the products
what can be known about this situation?
Which situation do u mean?
During a dry year, which plant will most likely be able to survive in clay soil?
Answer:
A
Explanation:
Answer:4
Explanation:
Glucose is a molecule that can move across the cell membrane. If the
concentration of glucose is higher outside the cell than inside the cell, then
what will happen by the process of diffusion?
Yea so what do i do?
Answer:
The right answer is B. Glucose molecules will diffuse out of the cell
Explanation:
Diffusion refers to the natural tendency of a system to homogenize the concentrations of chemical species within it.
Which product forms from the reaction between nitrogen (N)
(CI)?
A. NCI
B. NCI
C. N2CI
O D. N2C1
Answer:
None of the above
Explanation:
Because as N has the valence of 3 when it reacts with Cl of 1 as valence they will form NCl3Answer:
The product of the reaction between nitrogen (N) and (CL) is nitrogen trichloride (NCl3)
Explanation:
Although by seeing the question's answer choices, I think it was an error to detect the question (image) by Brainly as 2 of the answers is written the same.
However, when nitrogen gas reacts with chlorine gas, the product is gaseous nitrogen trichloride (NCL3), I guess 1 of your answer must be NCL3.
10. Michelle and David have been dating for almost two years. One night they
decide to take it further than kissing. Michelle asks if he has a condom. He says
no and that he will just pull out before he ejaculates so she won't get pregnant.
This is a really good method to use if you do not have another contraceptive
available. *
True or false?
Explain the phenomenon you observe in the diagram. Provide as many details as possible to your explanation
Answer:
reflection
Explanation:
this is what is seen on the mirror
What does gene mutation mean?
Answer:
Gene mutation are changes in single DNA bases or small intragenic delentions and rearrangements.
When the stimulus voltage is increased, _______. When the stimulus voltage is increased, _______. sodium permeability into the cell decreases sodium permeability into the cell increases to overcome the potassium exiting a greater-than-threshold depolarization results a greater-than-threshold depolarization results and sodium permeability into the cell increases to overcome the potassium exiting.
Answer:
a greater-than-threshold depolarization results and sodium permeability into the cell increases to overcome the potassium exiting.
Explanation:
The occurrence of action potential requires the existence of active voltage-dependent channels to open and close in response to the membrane depolarization.
When depolarization reaches and supers the threshold point, voltage-dependent Na+ channels open and the ion gets into the cell. The entrance of Na+ decreases the electric charge difference between the cellular interior and exterior. Membrane depolarizes and produces the action potential that tends to reach a potential equilibrium for Na+ = +60mV. The higher the Na+ input is, the greater is the depolarization and the greater is the Na+ permeability.
Once Na+ channels are closed, voltage-dependent K+ channels open, increasing the membrane permeability to the ion, letting K+ get out of the cell, following the electrochemical gradient.
The closure of Na+ channels and opening of K+ channels are responsible for membrane repolarization.
What is the human female reproductive cycle regulated by?
hope this helps
Answer:
The menstrual cycle is regulated by hormones. Luteinizing hormone and follicle-stimulating hormone, which are produced by the pituitary gland, promote ovulation and stimulate the ovaries to produce estrogen and progesterone.
which of these is a way the immune system works with other body systems?
A. It replaces skin cells
B. It produces osteoblasts
C. It filters mucus
D. It filters blood
Answer:
B
Explanation:
B
Explanation:
A. It replaces skin cells
Hope it is helpful to you
Based on the article "Will the real atomic model please stand up?," why did J.J. Thomson experiment with cathode ray tubes?
Answer:
To determine that electric beams in cathode ray tubes were actually made of particles
Explanation:
I hope this is correct, if it isn't then feel free to let me know and I will correct it. I'm sorry in advance if it is incorrect.
What could a human living now and a horse living thousands of years ago
have in common?
A. They need the same amount of energy to survive.
ООО
B. They have the exact same DNA
C. They are made of some of the same matter.
D. They both get their energy directly from the sun
Answer:
they both get their energy directly from the sun
the scientific method uses observation and what other process to answer a question
→ The correct answer that would answer the given question above would be EXPERIMENTATION. The scientific method uses observation to gather information, and to answer the questions based on the information gathered, this would involve experimentation. This is the testing of the information so that it would given a clear evidence on the answer.
I hope it's helps ╮(＾▽＾)╭
#CarryOnLearningAn object is placed at 0 on a number line. It moves 3 units to the right, then 4 units to the left, and then 6 units to the right. What is the displacement of the object?
Answer:
5
Explanation:
Distance is how far something goes and Displacement is how far it is from 0 or from the starting point. Additionally, displacement is a vector so it has a direction, in this case, left or right. To make this shorter let's just find displacement. So you're at 0 and you go 3 units to the right and so you're at positive 3 on the line. Next, you move 4 units to the left so now you're at -1. Finally, you move 6 units to the right and now you're at postive 5. Now you're +5 units away from 0 and so +5 is your displacement (5 units to the right is also correct)
Answer: +5 units or 5 units to the right (as long as it has a sign or a direction it's correct)
Healthy biodiversity provides
A. Protection of water resources
B. soils formation and protection
C. Nutrient storage and recycling
D. all of the above
The density of a white dwarf is
Answer:
The density of a white dwarf is 1 x 109 kg/m3.
Explanation:
A typical white dwarf is half as massive as the Sun, yet only slightly bigger than Earth. An Earth-sized white dwarf has a density of 1 x 109 kg/m3. Earth itself has an average density of only 5.4 x 103 kg/m3. That means a white dwarf is 200,000 times as dense.
1 x 10⁹ kg/m³ is the density of white dwarf. It is 200000 times denser than Earth. And it is the second densest object we know after neutron star.
what are end-product of digestion of starch,proteins and fats.
Answer:
proteins - amino acids
fats - fatty acids and glycerol
starch - glucose
I hope this information was of any use to you.
Answer:
can you fart on my face
Explanation:
plz
1. True-or-false: All of the substances present in nature are made up of less
than 100 types of particles. These particles are called molecules.
Answer:
False
Explanation:
there are billions of known molecules.
Within a plant cell, the glucose formed as a result of
photosynthesis may be used directly as
1) an energy source during cellular respiration
2) an enzyme for intracellular digestion
3) an absorber of radiant energy
4) a source of molecular oxygen
Answer:
an energy source during cellular respiration
Scrambled Sentence
terrestrial are Earth-like Mercury, Venus, Earth, Mars planets such as and planets
2) Scrambled Sentence
called gas giants Jupiter, Saturn, Uranus, are jovian planets and Neptune God-like also such as
Type the correct sentence on the line below.
Answer:
Terrestrial planets are Earth, Mercury, Venus, Earth, Mars.
Explanation:
Terrestrial planets are Earth, Mercury, Venus, Earth, Mars planets whereas Jupiter, Saturn, Uranus and Neptune are Jovian planets which is also called gas giants. Terrestrial planets means that the planets have rocky soil which is hard in nature while on the other hand, a gas giant is a big planet that is composed of mainly hydrogen and helium element so we can conclude that terrestrial planets are different from gas giant in their soil composition.
What was the purpose of Hardy and Weinberg´s work?
A) To learn where genetic information is stored
B) To count the total number of alleles in the world
C) To learn how to control the mating of organisms
D) To determine how allele frequency changes
Answer:
Is D
Explanation:
check picture so match the answer
Which example of a food production method is sustainable?
A. Planting a monoculture crop over large areas of land
B. Using no-till farming practices to decrease erosion
C. Using enough pesticides to reduce bee populations
D. Irrigating soil until it becomes waterlogged
1) What is the control group? 2) What is the experimental group? 3) What is the independent (manipulated) variable? 4) What is the dependent (responding) variable? 5) What should Tina's conclusion be?
Complete question:
Tina asks the question “Does caffeine increase the heart rate of an earthworm?” In Test 1, she measures the heart rate by looking at the earthworm under a microscopes, the earthworm has a heart rate of 50 bpm (beats per minute). In Test 2, she places a few drops of caffeine on the earthworm’s skin and measures the rate again. In this test, the heart rate is 68 bpm.
1) What is the control group?
2) What is the experimental group?
3) What is the independent (manipulated) variable?
4) What is the dependent (responding) variable?
5) What should Tina's conclusion be?
Answer:
Individuals from test 1Individuals from test 2CaffeineHeart rateTina´s hypothesis is correct. Caffeine increases the heart rate of an earthworm.Explanation:
During an experiment, data from an experimental group is compared with the data from a control group. Both groups are selected from the same pool or population, so they are identical in all aspects except for the independent variables.
The control group is used to identify any other factors influencing the results obtained in the study, apart from the modified variables of the treatment.
The experimental group is the one affected by the experimental procedure or treatment. The researcher voluntarily changes the independent variables in the experimental group to observe how they affect the group under study. These variables are kept constant in the control group, not influencing the results, while the experimental group receives the treatment. There can be several experimental groups.
Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter. Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually represented using the letter Y. Controlled variable: Refers to the variables that have no influence on the results. These variables do not affect the change in the dependent variable values.1) What is the control group?
Individuals from test 1 compose the control group. They are not affected by the treatment. Tina just uses them to measure the normal heart rate and to compare them with individuals from test 2.
2) What is the experimental group?
Individuals from Test 2 compose the experimental group. They are affected by the treatment. Tina drops caffeine on their skin to see how it affects the worms.
3) What is the independent (manipulated) variable?
Caffeine is the independent variable. Tina manipulates the number of drops she places on the worm´s skins.
4) What is the dependent (responding) variable?
Heart rate is the dependent variable. Tina evaluates how the heart rate changes in individuals with or without caffeine.
5) What should Tina's conclusion be?
Caffeine increases the heart rate of an earthworm. It changes from 50 to 68 bpm. Tina´s hypothesis is correct.
Label the lettered phases of the cell cycle according to the diagram in Figure. 1-1.
Figure 1-1
A =
B =
C =
D =
Answer:
Explanation:
A = G1 phase (Growth phase)
B = S phase ( Growth and DNA Synthesis)
C = G2 phase (Growth and final preparations for division)
D = Mitotic phase (Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis)
name the gland that produces the hormone that stimulates growth
A. pituitary gland
B. thyroid
C. adrenal glands
D. pancreas
Answer:
a ........Pituitary gland
I point
Bactrian camels, drcanedarves, llamas, and alpacas are all members of the same taxonomic farníly, Camelidae. Members of this family all have two tores, no homes,
true canine teeth, and a split upper lip. The family Camelidae originated in North America. The physical features of animals in this family and the family's
goopraphical origin provide evidence that all these animals -
have slowly evolved to become herbivores
live in the same type of ecosystem
have a common ancestor
exchanged DNA at some point in the past
Answer:
Have a common ancestor
Explanation:
All of these animals share many distinct traits ,while being in many different areas of the world
PLEASE HELP ME I NEED ASAP.
Complete the following table on the different types of microscopes.
Answer:
A compound light microscope is a microscope with more than one lens and its own light source. In this type of microscope, there are ocular lenses in the binocular eyepieces and objective lenses in a rotating nosepiece closer to the specimen.
The scanning electron microscope (SEM) produces images by scanning the sample with a high-energy beam of electrons. As the electrons interact with the sample, they produce secondary electrons, backscattered electrons, and characteristic X-rays.
Explanation:
