Answer:
That B-form DNA helices have a pitch of approximately 34 angstroms
Explanation:
Rosalind Franklin was an X-ray crystallographer whose work contributed to the discovery of the molecular structure of DNA molecule by Watson and Crick. B-form DNA is the most common form of DNA, which consists of a right-handed double helix. B-form DNA was discovered by Watson and Crick based on the X-ray diffraction image of DNA (popularly known as image 51) obtained by Franklin. The pitch refers to the distance after every 10 base pairs along the DNA helix for one complete double-helix turn. This distance in the B-DNA helix is 34 Ångströms (i.e., 3.4 nanometers).
how does the soil environment support the earthworm in the students hand
What is the function of neurotransmitters?
a) to transmit nerve impulses to other nerves or organs
b) to stimulate the production of epinephrine
c) to transmit nerve impulses inside the nerve
d) none of the above
Serotonin (5-hydroxytryptamine, 5-HT) is a neurotransmitter with receptors (5-HT receptors) located in cells throughout the body.
a. True
b. False
Answer:
a. True
Explanation:
Serotonin receptors are G protein-coupled receptors involved in the modulation of both excitatory and inhibitory neurotransmission. Serotonin receptors are divided into seven classes (5-HT1 to 5-HT7) which can be in turn divided into several subclasses (A, B, C, etc.). Most of the serotonin receptors are located in the gut (about 90%), but they are also spread in other parts of the body, including the amygdala, the bed nucleus of the stria terminalis (BNST, also known as the extended amygdala), Merkel cells (skin), taste receptor cells (tongue), Raphe nuclei (brainstem), etc.
If dogs has 78 chromosomes in each somatic cell, how many chromosomes does each dog sperm have?
Is it possible for 2 dog spend cells to simultaneously enter a dog egg? Why or why not?
Answer:
1.Normal dog semen contains 300 million to 2 billion sperm. The quantity of sperm varies depending on the weight and size of your dog, with the bare minimum sitting at around 10 million sperm cells per pound of bodyweight.2.yes because The heat cycle of the female lasts from 18 to 21 days. ... Eggs remain fertile for about 48 hours. ... Dogs mature sexually earlier than they do emotionally.PLEASE HELP! Which of the following statements correctly describes the relationship between erosion and deposition?
A.
Erosion breaks rocks into pieces, and deposition moves the pieces.
B.
Deposition and erosion both involve the movement of small pieces of rock from one place to another.
C.
Erosion is the movement of small pieces of rock from one place to another, and deposition is when the rock settles in a new location.
D.
Deposition and erosion break rocks into smaller pieces, but the rocks remain in place.
2 / 14
Answer:
B
Explanation:
thsey both move or break rocks
A prospective groom, who is not affected by cystic fibrosis (CF), has a sister with cystic fibrosis, an autosomal recessive disease. Their parents are also not affected. The brother plans to marry a woman who has no history of CF in her family. What is the probability that they will have a child with CF? They are both Caucasian and the overall frequency of CF in the Caucasian population is 1/2500 - that is, 1 affected child per 2500 (assume the population meets the Hardy-Weinberg assumptions).
Answer: In punnett square number 1, we see the cross between AA and aa, and the result is 100% Aa individuals, so there is 0% chances of haveing a child with CF. In punnett square number 2, we see the cross between Aa and aa and there is 50% chances of having a child with CF (aa genotype).
p = 0.98
q = 0.02
p² = 0.9604
q² = 0.0004
2pq = 0.0392.
Explanation:
Due to technical difficulties, the explanation has been attached as a word document.
People often go to genetic counselors to have a ____________ drawn to trace a disease that they do not want to pass on to their children.
Answer:
Blood test
Explanation:
Which of these best predicts the length of time a star "lives" on the Main-sequence and the path it follows as it evolves over time?
its mass
its color
its name
its location
Answer:
its mass is the answer I just look up some research
The only connective tissue without fibroblasts is
(a) areolar connective tissue
(b) bone
(c) cartilage
(d) blood
Answer:
d d d d ................... blood
Please answer all questions! Thank you very much!
answer:
Create a PowerPoint presentation exploring the following prompt:
What is your pet project for the ocean? What concerns you most about our oceans? What would you like to see change in how we treat our oceans? What would you like to do to help save the oceans?
What is different about the gases you inhale and exhale? Be specific.
Answer:
you inhale oxygen and exhale carbon dioxide.
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A flask containing photosynthetic green algae and a control flask containing only water are exposed to a cycle of 12 hours of light and 12 hours of darkness. Which of the following statements best describes how the relative dissolved oxygen concentration in the flask with algae will compare to the control flask?
A. The dissolved oxygen in the flask with algae will not be different from the control flask at any time.
B. The dissolved oxygen in the flask with algae will always be higher.
C. The dissolved oxygen in the flask with algae will be higher in the light, but lower in the dark.
D. The dissolved oxygen in the flask with algae will always be lower.
E. The dissolved oxygen in the flask with algae will be higher in the light, but the same in the dark.
The option that correctly describes the relative dissolved oxygen concentration in the flask with algae will compare to the control flask is C. The dissolved oxygen in the flask with algae will be higher in the light but lower in the dark.
What factors can increase the amount of dissolved oxygen in water? Temperature, pressure, salinity and biological organisms are the major contributing factors that affect dissolved oxygen. If the medium contains a photosynthetic plant that too in the presence of light, then this will increase the dissolved oxygen. On the other hand, increased salinity and warm water decrease the amount of oxygen dissolved in water. As given above, the flasks containing the green algae and water are given 12 hours of light and then put 12 hours in darkness. The flask that contains the algae contains more dissolved oxygen during the light hours as algae are photosynthesis in nature and thus, they will do photosynthesis during 12 hours of lighting. But, the control flask contains only water and thus, there will be no addition of dissolved oxygen.Thus, we can conclude that flask that contains algae have more amount of oxygen dissolved than the control flask containing only water. During 12 hours of darkness, no photosynthesis occurs and hence algae containing flask will have a lower amount of dissolved oxygen.
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Match the following terms to their definitions. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Words can be used more than once. ResetHelp Diverging circuit Converging circuit Reverberating circuit Parallel after-discharge circuit 1. : One incoming axon triggers responses in ever-increasing numbers farther and farther along the circuit. 2. : May be involved in complex, exacting types of mental processing. 3. : Involved in control of rhythmic activities such as breathing. 4. : Involved in activating fibers of a skeletal muscle such as the biceps muscle. 5. : Different types of sensory input can have the same ultimate effect.
Answer:
1. Diverging circuit.
2. Parallel after-discharge circuit.
3. Reverberating circuit.
4. Diverging circuit.
5. Converging circuit.
Explanation:
A sensory system can be defined as components of the central nervous system (CNS) which comprises of the brain, neural tissues or pathways and sensory neurons responsible for sensory functions, perception and processing sensory informations such as sound, light, heat, etc.
Basically, the central nervous system (CNS) interprete the neural signals that are generated from stimuli that are detected by the sensory system. The five (5) main sense organs in the sensory system are: skin, tongue, ears, nose and the eyes.
Generally, the nervous system found in living organisms such as humans, comprises of two (2) major components or systems; a central nervous system (CNS) and a peripheral nervous system (PNS).
A neural circuit can be defined as a group of neurons in the body of a living organism which are interconnected by synapses to perform specific functions when they're activated.
There are four (4) main types of neural circuits used for performing specific neural functions in the body of a living organism, these includes;
1. Diverging circuit: one incoming axon triggers responses in ever-increasing numbers farther and farther along the circuit. For example, a neuron that stimulates thousands of cells such as sensory pathway to the central nervous system (CNS).
2. Parallel after-discharge circuit: may be involved in complex, exacting types of mental processing. For example, it used in reflex arcs, mathematics and logic.
3. Reverberating circuit: involved in control of rhythmic activities such as breathing and as such it's repetitive in nature. For example, short-term memory, sleep cycle, etc.
4. Diverging circuit: involved in activating fibers of a skeletal muscle such as the biceps muscle.
5. Converging circuit: different types of sensory input can have the same ultimate effect. For example, the regulation of the somatic motor neuron.
how would decerasing the time it takes you to run a certain distance affect your speed ?
It would mean you are moving faster than you already were.
motion
Easy if you run fast, you will get around faster, but if you crawl, then you'll be slower
what is the function of phloem?
Take 50 Points
Answer:
[tex]\huge\boxed{Answer\hookleftarrow}[/tex]
⎆ Phloem is the structural part of the plant that helps in the transportation of food materials from the green parts of the plants (leaves ⇻ where the food is made) to different parts of the plants.
____________________
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Which of the following processes releases energy to be used by a cell
Answer:
A phosphate group is removed from ATP to form ADP
ATP usually releases energy by breaking down the weak phosphate cell present. The energy released due to the breaking down of the phosphate cell is then utilized. The ATP is converted to ADP. Whenever a cell feels the necessity for energy it releases a phosphate to gather the energy.
What does each region of the kidney have in it?
Answer:
Outer cortex, Middle Medulla, and Renal Pelvis.
They all have a lot of Blood vessels(something they share in common).
Explanation:
The kidney is made up with three regions; the outer cortex, the middle medulla (with the renal pyramids) and the inner-most renal pelvis.
6. Which of the following is a nonmetal?
a. Fe
b. AI
C. N
d. Si
Answer:
C nitrogen!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Suppose a reptile damages one of its kidneys, and the
kidney is not able to function.
The levels of which material within the reptile's body
would most likely be affected?
Answer:
Nutrients
Explanation:
I say nutrients because the kidneys job is to seperate the toxins from the nutrients in your body.
Answer:
The answer is B Nutrience
Explanation:
If I could take a screen shot I would show you I got it wright on edg 2021
Please help I’ll mark you as brainliest if correct
the answer for this question is B/3
PLZ HELP will mark brainliest
The chart below shows the primary energy production methods in two locations.
Location Energy production method
A burning of fossil fuels
B geothermal energy
If both the locations produce the same amount of energy, which of these statements best describes the difference between the two locations?
Location A experienced higher installation costs for energy than Location B.
Location B experienced higher installation costs for energy than Location A.
Location A uses a lesser amount of electricity than Location B.
Location B uses a lesser amount of electricity than Location A.
Answer:
Location B experienced higher installation costs for energy than Location A.
Explanation:
This is correct because with geothermal energy, it is still being experimented with, so the power plant installation will be more costly. It is also correct because the knowledge on geothermal energy is not as significant compared to fossil fuel. Because the world used to mainly use fossil fuels, we know more about it. So, the production of a geothermal plant has to be exact and will be more costly. I also got this right on my quiz.
Hope this helps!
The statement 'Location B experienced higher installation costs for energy than Location A' is correct about energy production methods.
What are renewable sources of energy?Renewable sources of energy are energies that may be obtained indefinitely from the environment.
The renewable sources of energy have important benefits associated with the obtention of clean energy.However, these sources of energy (e.g. geothermal energy) exhibit high installation costs.In conclusion, the statement 'Location B experienced higher installation costs for energy than Location A' is correct about energy production methods.
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A population of 1,000 healthy, at risk people is monitored for one year starting on January 1st, and the development of cases of chicken pox is noted. No one has chicken pox at the start of the investigation. Twenty people develop chicken pox on June 30th and forty people develop chicken pox on September 30th. Twenty-four people were lost to follow-up on March 31st, and twenty-four people were lost to follow-up on November 30th. None of those lost to follow-up had developed chicken pox prior to becoming lost. Assume that you can get chicken pox only once.
Required:
What is the cumulative incidence of chicken pox in this population during the one-year period from January 1st through December 31st?
Answer:
[tex]\mathbf{cummulative \ incidence = \dfrac{60}{1000}}[/tex]
Explanation:
We recognize that total occurrence equals new cases of disease over time divided by the number of people at risk at the onset.
Mathematically:
[tex]\mathbf{cummulative \ incidence = \dfrac{New \ cases \ of \ disease \ occurrence}{Number \ of \ population \ at \ risk \ at \ onset}}[/tex]
Given that:
Number of the population at risk = 1000 individuals
New cases during Jan 1 - Dec 31 = 60 because;
At 20 occurred on June 30 & 40 on Sept. 30) & no new cases were identified after that:
∴
[tex]\mathbf{cummulative \ incidence = \dfrac{60}{1000}}[/tex]
Please answer I will give u brainliest
Answer:
stationary front
Explanation:
the correct answer is stationary front
Which of the following is equivalent to 36 + 8
Answer:
i- its 44, my mans just add up the answers and see which one equals 44
Explanation:
Which is the most likely cause of tropical storms?
A - Water runoff from the land fuels storm clouds.
B - High Pressure air causes storm clouds to form.
C - Sea breeze close to shore push storm clouds together.
D - Warm water evaporates, rises quickly, and interacts with a colder air mass
A person who has allergies has a compromised immune system because the body's immune system
attacks its healthy cells.
overreacts to an antigen.
steals nutrients from healthy cells.
responds to mutagens.
Answer:
B
Explanation:
Which of the following is true about pea
plants?
A. They produce a small number of offspring.
B. They produce asexually.
C. Their female parts can be artificially pollinated.
D. They don't have many contrasting characters.
The statement true about pea plant are as,
They produce a small number of offspring.Their female parts can be artificially pollinated.What is artificial pollination?The pollination which is carried by human is called artificial pollination.It is used to pollinate plants when natural pollination is insufficient and undesirable.The artificial pollination consider as mechanical technique.There is no requirement of insect and weather.The example of plant in which artificial pollination can occur is kiwifruit.To learn more about artificial pollination here.
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The cell theory states that all cells arise from existing cells. Which scientist first
determined this part of the cell theory?
A. Hooke
B. Schleiden
C. Schwann
D. Virchow
Answer: C. Theodore Schwann
Explanation: The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life.
You want to build a house in an area with a maximum amount of species diversity. For building the house you have to clear up to 3/4th of the forest cover. How do you think this will affect the water runoff?
Answer:
The runoff will increases.
Explanation:
The runoff will be adversely affected if the 3/4th of the forest cover is removed because forest cover lowers the intensity of runoff by absorbing most of the water. The construction of house will increase the runoff due to little vegetative cover for the absorption of water and more water will runoff on the surface that will leads to flood condition in the lower elevated region of that area. The vegetative cover of the forest helps in preventing the flood condition by absorbing the runoff water.
Imagine five forest communities, each with 100 individuals distributed among four different tree species (W, X, Y, and Z). Which forest community would have the most relative abundance?
50W, 25X, 15Y, 10Z
70W, 10X, 10Y, 10Z
25W, 25X, 25Y, 25Z
40W, 30X, 20Y, 10Z
Answer:
the 3rd one would be most relative
Explanation:
The forest community each with 100 individuals distributed among four different tree species (W, X, Y, and Z) would have the most relative abundant option as correct 25W, 25X, 25Y, 25Z.
Diversity is described because of the unique types/sort of lifestyles paperwork gift at the earth. Diversity plays an amazing position with the aid of using Maintain the stability of nature, law of weather, cleansing of air and water, carbon sequestration and international weather change, organic productivity, vitamins cycling, stabilize earth from erosion, and lots greater function.
Mainly variety relies upon Species richness and species evenness.Species richness is the entire quantity of various species present. Species Evenness is the abundance of every species in a community.What is species?Species are frequently described as the biggest organization of organisms wherein any people of the ideal or mating kinds can produce fertile offspring, normally through reproduction. Other approaches to defining species encompass their karyotype, DNA sequence, morphology, behavior, or ecological niche.
Thus it is clear that forest communities would have the most relative abundance are 25W, 25X, 25Y, 25Z.
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