9. If the Earth and the Moon were on the same orbital plane, how often would a lunar eclipse
occur?
A. Once a month at the First Quarter phase.
B. Once a month at the full Moon phase.
C. Once a month at the New Moon phase.
D. Once a month at the Third Quarter phase.
Answer:
.B
Explanation:
once at the full moon phase
A _____ is the part of the environment in which an organism lives.
Answer: habitat
Explanation:
It is the only one that makes sense
For a typical human aorta, the diameter of the lumen is 30 mm and the thickness of the wall is 4 mm. Assuming a blood density of 1.06 gm/cc and a viscosity of 0.035 Poise, calculate the Womersley number if the heart rate is 70 bpm. Diameters for the carotid and femoral arteries of a typical human are about 0.8 cm and 0.5 cm, respectively. Compute the Womersley numbers for each of the arterial segments for the same heart rate and explain if the flows can be assumed steady or not.
Answer:
Womersley numbers : 22.25 , 5.96 , 3.72
Explanation:
Calculate the Womersley number if the heart rate = 70 bpm
For the Human Aorta
∝ = r [tex]\sqrt{\frac{wp}{u} }[/tex] ------ ( 1 )
r = radius = 15 mm = 0.015 m
w = 2πf = 2 * π * 70 = 439.82
p = density of blood = 1060 kg/m^3
u = 0.035 P = 3.5 cp = 3.5 * 10^-3 Ns/m^2
Back to equation ( 1 )
∝ = 0.015 * [tex]\sqrt{\frac{439.82*1060}{60*3.5*10^{-3} } }[/tex] = ( 0.015 * √466209.2 / 0.21 ) = 22.35
For Carotid artery
r = 0.8 cm / 2 = 0.4 cm = 0.004 m
w = 2πf = 439.82
Womersley number = ( 0.004 * √466209.2 / 0.21 )
= 0.004 * 1489.981 = 5.96
For Femoral artery
r = 0.5 cm / 2 = 0.25 cm = 0.0025 m
Womersley number = 0.0025 * √466209.2 / 0.21 )
= 0.0025 * 1489.981 = 3.72
The flow is unsteady because of the varying Womersley numbers
Which event might disrupt a stable ecosystem?
A
Green plants use chlorophyll to produce food.
B
An invasive species enters the environment.
Consumers eat producers.
D
Predators kill prey.
Answer:
An invasive species enters the environment.
Explanation:
All other answers already naturally happen in an environment so they are stable. But if an invasive species enters, the ecosystem will be less stable because invasive species dominate ecosystems which isn't natural to the animals that live there. So for example, if someone introduced an invasive species to the ecosystem, it can cause many changes like if it was a predator, there'll be less primary consumers (the animals that eat plants) because the invasive species isn't natural to them.
Answer:
B
Explanation:
An invasive species enters the environment is the correct answer.
Which of the following is a model that
shows the amount of energy available as it
flows through an ecosystem?
A) niche
B) energy pyramid
C) carrying capacity
D) food chain
Answer:
b
Explanation:
energy pyramids show how the energy passes through the ecosystem
What would happen to this nitrogen cycle if a virus killed all the bacteria?
nitrogen would just keep on cycling
plants would take over for the bacteria
the cycle would stop because the plants can't take in atmospheric nitrogen
animals would grow more because there's no bacteria
Answer:
the cycle would stop because the plants can't take in atmospheric nitrogen
Which options are examples of innovations that increased the carrying capacity of Earth for people? THANKS!
Choose all that apply:
Advances in heating and cooling.
Having fewer children per family on average.
Advanced agricultural methods.
Medical advances.
Answer:
having fewerchildrens per family on avg
Analise as alternativas abaixo e assinale a INCORRETA sobre o sistema nervoso. *
Um neurônio motor atua nos músculos, recebendo estímulos.
Os receptores sensoriais percebem estímulos.
Na resposta involuntária, o estímulo recebido não é processado no cérebro.
Neurônios associativos conectam neurônios sensitivos aos neurônios motores.
Os nervos conectam o cérebro ao corpo.
Answer:
Na resposta involuntária, o estímulo recebido não é processado no cérebro. It's correct ✔
why might patients who go into remission get a different type of cancer?
Answer:
Remission can be partial or complete. In a complete remission, all signs and symptoms of cancer have disappeared. If you remain in complete remission for 5 years or more, some doctors may say that you are cured. Still, some cancer cells can remain in your body for many years after treatment.
Only producers/autotrophs
Products are carbon dioxide and water.
Products are glucose
and oxygen.
Reactants are carbon dioxide and water.
Reactants are glucose and oxygen.
Photosynthesis
Both
Cellular Respiration
Answer:
photosynthesis - Only producers/autotrophs, products are glucose and oxygen, reactants are carbon dioxide and water
cellular respiration - products are carbon dioxide and water, reactants are glucose and oxygen
crabtree effect on glycolysis
Answer: 'At high fructose concentrations, respiration is inhibited while glycolytic end products accumulate, a phenomenon known as the Crabtree effect. It is commonly believed that this effect is restricted to microbial and tumour cells with uniquely high glycolytic capacities (Sussman et al, 1980).
Explanation: Sorry I dont really know a lot
Match the medical professionals to the disorders they are likely to treat. pancreatitis diabetes colon cancer peptic ulcer disease proctologist arrowRight hepatologist arrowRight gastroenterologist arrowRight endocrinologist arrowRight
Answer:
Proctologist > Diabetes
Hepatologist > Pancreatitis
Gastroenterologist.> Colon Cancer
Endocrinologist. > Peptic Ulcer Disease
A 4-base deletion in the AAUAAA sequence in the 3' untranslated region of an mRNA that eliminates the AAU, thereby preventing RNA Polymerase from polyadenylating the mRNA, would have the effect of:
Answer:
decreasing the number of copies of the polypeptide translated from this mRNA
Explanation:
Polyadenylation refers to the addition of multiple adenosine monophosphates (i.e., a polyA tail) to an RNA molecule, usually a messenger RNA (mRNA). Polyadenylation is catalyzed by an RNA polymerase called poly(A) polymerase (PAP), which adds adenine nucleotides to the mRNA. In eukaryotic cells, polyadenylation is required to produce a mature mRNA which is then used as template for protein synthesis during translation. This posttranscriptional modification (polyadenylation) is known to stabilize the mRNA by preventing its degradation by exoribonucleases, i.e., enzymes that degrade RNA molecules by removing terminal nucleotides from 3' and 5' ends. In consequence, it is expected that a mutation that prevents polyadenylation of a target mRNA decrease the number of copies of the protein translated from this mRNA.
How did the development of the sexual reproduction affect evolutionary change?
Prisms produce the colors of the rainbow through?
A. Reflection.
B. Refraction.
C. Scattering.
D. Absorption.
Answer:
It should be B
Explanation:
I hope this helps
I need help plz help me
Answer:
T and A are together
G and C are together
Explanation:
these pairs will always connect to each other
Please answer quickly
HELP!! Examine the model depicting the relationship between photosynthesis and cellular respiration. Select ALL of the choices that correctly pairs products and reactants with their place in the model. A) A: ATP B) B: water and oxygen C) B: water and carbon dioxide D D: carbon dioxide and ATP E) D: oxygen and glucose
There are ways to Examine a model. The options that correctly pairs products and reactants with their place in the model are;
A) A: ATP
B) B: water and oxygen
D D: carbon dioxide and ATP
What are products and reactants?A combination reaction is known to be a type of reaction where two reactants combine to form one product.
Oxygen and the halogens are known to be highly reactive elements and may undergo combination reactions with other known elements.
Learn more about products and reactants from
https://brainly.com/question/13677872
Answer:
ACE
Explanation:
what is angiosperm in plant
Answer: a plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.
Explanation:
Which is only active during a specific immune response?
O A. Neutrophils
O B. B cells
O C. Macrophages
O D. Lysozymes
Answer:
T Cells is another answer for this question!
Please help on #21 I’ll mark you as brainliest if correct
Answer:
I think the answer is J: desert.
Explanation:
In the grassland, rainforest, and swamp, it either rains frequently or is constantly surrounded by water. However, deserts rarely get any water. Also, not many desert plants have leaves, but instead have very large stems, like cacti and large sage bushes. Therefore, the desert would be the most important habitat this could take place.
Pls mark brainliest if possible!!! Have a fantabulous day!!!
I’m struggling with this practice problem help
Answer:
it think it C ^^^^^^^^^^^^
If two organisms have similar traits of DNA they probably
Answer:
4th Option, share a common ancestor.
Explanation:
If two organisms have similar traits of DNA they probably share a common ancestor is the most suitable option to fill the blank.
When the two organisms have similar traits of DNA they probably share a common ancestor.
Two organism have the same traits:When the genes are shared so it preserved the ancestor record where they share with each other and excludes the bacteria.
And, if the DNA is the same for two organism so they would share the a common ancestor.
hence, the last option is correct.
learn more about DNA here: https://brainly.com/question/20719741
if hypertonic has more solutes than hypotonic does hypertonic have more or less water?
Answer:
Explanation:
Hypertonic solutions have less water ( and more solute such as salt or sugar ) than a cell. ... Hypotonic solutions have more water than a cell. Tapwater and pure water are hypotonic. A single animal cell ( like a red blood cell) placed in a hypotonic solution will fill up with water and then burst.
One of a group of external regulatory proteins that stimulates the growth and division of cells is
Answer:
Cyclin-regulates the timing of the cell cycle. Normally, when cells touch, they stop growing. Growth factors-one of a group of external regulatory proteins that stimulate the growth and division of cells.
Explanation:
I hope it's help u
) Name the 3 polymers of carbohydrates and describe the structure and function of each of them.
Answer:
The correct answer is - starch, glycogen, and cellulose.
Explanation:
Polysaccharides are the name of the polymers of carbohydrates that have long chains of monosaccharides connected together. Carbohydrates like starch, glycogen, cellulose, are long polymers of monosaccharides.
Starch produced by plants and is a long-term storage form of sugar. Starch is also the major source of food and is made of two major polysaccharides amylose, linear polysaccharide of α-1,4-linked d-glucopyranose with a few branches of α-1,6 linkages, amylopectin, amylopectin possesses a branched structure with α1–4 as well as α1–6 glycosidic linkages.
Glycogen is a polymer of glucose residue with α-1,4 glycosidic bonds and after every 10 residues, there is branches off via α-1,6 glycosidic linkages. It is the second storage form of energy.
Cellulose is the structural polymer that is made up of unbranched chains of glucose molecules linked via beta 1-4 glycosidic bonds every second glucose is inverted in this polysaccharide.
Why do you think clothes wear-out faster if washed in hard water?
Answer:
Hard water can cause your dark clothes to fade faster than they should. ... Explanation:
You get those stains for the same reason you get similar-looking stains inside porcelain sinks and toilets – iron in the water. Household water containing a lot of iron may leave those stains on your clothes.
Can you guys help me
What happened to make the K-T boundary?
Answer:
A meteorite big enough to be called a small asteroid hit Earth precisely at the time of the K-T extinction. The evidence for the impact was first discovered by Walter Alvarez and colleagues. They found that rocks laid down precisely at the K-T boundary contain extraordinary amounts of the metal iridium
Explanation:
The number of electrons in atoms determine an elements ? properties
Answer: The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge.
Explanation: