Deserts are found around the globe, generally around a belt of 30 degrees north and south latitude where global wind patterns carry down dry air from the upper atmosphere.
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What do smooth muscle cells look like under a microscope? A.small,striated,and 1-2 nuclei per cell. B.long and thin with striations and multiple nuclei. C.smooth ,1 nuclei,and connected by gap junctions.
Answer:
your answer would be C
C.smooth ,1 nuclei,and connected by gap junctions.
Explanation:
This is because, the other options include it having striations, and it does not have that.
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Smooth muscle cells look like smooth, single nucleate, and connected by gap junctions under the microscope. Thus, the correct option is C.
What are Smooth muscle cells?
Smooth muscle cells are also called as involuntary muscle cells. These muscle shows no cross stripes under microscopic magnification. Muscle cells are made up of narrow spindle-shaped cells with a single, centrally located nucleus. Smooth muscle tissue, unlike the striated muscle, contracts slowly and automatically in the body.
At a cellular level, smooth muscle cells can be described as an involuntary, non-striated muscle cell. Smooth muscle cells consist of alternate thick and thin filaments which are not arranged into sarcomeres however it gives a non-striated pattern. On further microscopic examination, it appears homogenous.
Therefore, the correct option is C.
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A population of 1,000 squirrels live on a farm plot that has an area of 250 square feet. What is the population density?
Answer:
750 square feet
Explanation:
1,000-250=750
And this is the population density.
The population density is equal to 4 people/square feet.
What is the formula for calculating population density?The formula for population density is defined as the number of individuals divided by the area of land given.
Here, number of individuals = 1,000
Area of land = 250 square feet
So, 1000/250 = 4
Therefore, the population density is equal to 4 people/square feet.
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Tall oak trees are better able to compete for sunlight in crowded forests. short oak trees are at a
disadvantage. what type of selection appears to have made oak trees grow tall?
a. stabilizing selection
b. directional selection
c. disruptive selection
The type of selection that makes tall oka trees a better competitor for sunlight over short ones would be directional selection.
What is directional selection?It is a kind of natural selection in which individuals with traits at one extreme end of the population are better adapted to the environment.
In this case, tall and short oak trees are at the two extreme ends of the population mean with tall oak trees being able to better competitors for sunlight than the short ones.
The selection is, thus, directional, towards the tall trees rather than the average or the short ones.
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Based on the pyramid and what you know about iron, do you think you get
enough iron in your diet?
Answer:
Iron and area in the goal
What is the correct order of structures that a piece of food would encounter as it travels through the alimentary canal of a bald eagle?.
The correct order of structures is mouth, oesophagus, crop, stomach(proventriculus), gizzard, intestine, and anus.
The digestive tract of birdsThe digestive tract of birds starts from the mouth and ends at the anus.
As the food enters the oesophagus through the mouth, it is pushed down to the first stomach called the proventriculus.
Hydrochloric acid, mucus and a digestive enzyme, pepsin, are secreted by specialized cells in the proventriculus and start the process of breaking down the structure of the food material.
Food substances that are hard to digest are transferred to the gizzard. Nutrients are absorbed in the intestines and undigested food substances are removed through the anus.
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Who studied layers of rocks and fossils and had their studies helped change the age of the earth from 6,000 to 3 million years old?
Answer:
James Hutton he did it
When arginine is added to a culture already growing exponentially in a medium without arginine, what occurs?.
Answer:
When arginine is added to a culture growing exponentially in a medium without arginine, what occurs? Growth continues, but the production of enzymes required for the synthesis of arginine ceases
Explanation:
Energy in an ecosystem flows directly from _______. a. producers to tertiary consumers b. producers to secondary consumers c. tertiary consumers to secondary consumers d. secondary consumers to tertiary consumers please select the best answer from the choices provided a b c d
Answer:
A.
Explanation:
Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next.
Energy in an ecosystem flows directly from producers to tertiary consumers. So, the correct option is A.
What do you mean by Ecosystem?An Ecosystem may be defined as an area where organisms of different species are present together in a given time and interact with one another in order to survive.
In an ecosystem, producers produce the energy in the presence of sunlight through the process of photosynthesis. And then passes its energy to primary consumers (herbivores), then primary consumer passes their energy to secondary consumers (carnivores), then secondary consumers pass their energy to tertiary consumers. According to Lindeman, only 10% of energy get transferred to each trophic level.
Therefore, Energy in an ecosystem flows directly from producers to tertiary consumers.
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The ____________ and brain make up the central nervous system. The spinal cord extends through the vertebral canal and is composed of an inner ____________ region and an outer ____________ . The spinal cord contains ____________ in the cervical and lumbar regions, which give rise to nerves that serve the upper and lower limbs.
The spinal cord and brain make up the central nervous system. The spinal cord extends through the vertebral canal and is composed of an inner gray matter region and an outer white matter . The spinal cord contains enlargements in the cervical and lumbar regions, which give rise to nerves that serve the upper and lower limbs.
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The stability of inheritance and variation between offspring from one generation to the next is explained by the field of
Genetics is the field of biology that deals with the study of what is transmitted in successive generations through genes.
What is genetics?It is the field of biology that studies how physical characteristics and traits are passed from one generation to another.
Therefore, it analyzes the stability and variation and how the inheritance of biology is transmitted from one individual to another, its main objective is to explain the way in which traits and various qualities are passed from parents to their descendants.
Therefore, we can conclude that genetics is the field of biology that deals with the study of what is transmitted in successive generations through genes.
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Brown coat color rabbits possess the dominant allele B, and white coat color rabbits possess the recessive allele b. If the frequency of the allele for white coat color is 0.04, what is the frequency of the dominant allele in the population?
Assuming Hardy-Weinberg equilbrium, we have
p + q = 1
where p = frequency of dominant allele and q = frequency of recessive allele. So
p = 1 - q = 1 - 0.04 = 0.96
Consequently we have
• p² = 0.9216 = frequency of hom ozygous domininant genotype
• pq = 0.0768 = frequency of heterozygous genotype
• q² = 0.0016 = frequency of hom ozygous recessive genotype
since
p² + 2pq + q² = 1
Select the correct answer from each drop-down menu.
Analyze the pedigree shown.
O
square = male
circle female
expresses
trait
10- does not
10- carries trait
express trait
The tralt in the pedigree above is
wand
Reset
Answer:
Looks like a recessive trait, since both halves of the shape needs to be filled to make the trait active.
The pedigree is explained in the image, and the male is represented by the square and the female is represented by the circle. Here is the sex linked recessive pedigree present in the image.
What does the pedigree explain?The pedigree explains the heritable pattern of traits, such as genetic diseases in males and females, as well as the chances of being diseased, such as with sex-linked recessive diseases, where males have a higher chance of being diseased than females. Here the image explains it is a sex-linked recessive disease because most females are carriers, which means they have a single copy of the recessive allele, but when they pass it on to their sons, they get fully diseased as they need a single recessive copy due to the presence of a single X chromosome.
Hence, the male is represented by the square, and the female is represented by the circle, and here is a sex linked recessive pedigree present in the image.
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PLEASE HELP I NEED THIS DONE!!!! 60 POINTS!!!!
Answer:
Below
Explanation:
1. Sedimentary rock
2. Metamorphic rock
3. Magma
4. Igneous rock
5. Weathering and Erosion Ign.
6. Weathering and Erosion Met.
7.Weathering and Erosion Sed
8. Compaction and Sedimentation.
9. Heat and pressure Sed.
10. Heat and pressure Ig
11. Melting
1. Sedimentary Rock
2. Metamorphic Rock
3. Magma
4. Igneous Rock
5. Weathering & Erosion (Ig)
6. Weathering & Erosion (Met)
7. Weathering & Erosion (Sed)
8. Compaction & Cementation
9. Heat & Pressure (Sed)
10. Heat & Pressure (Ig)
11. Melting
12. Cooling & Hardening
Hope this helps!
Glomerular filtration regulation involves intrinsic control which could best be described as ______.
The kidney's intrinsic capacity to control blood flow gives the ability to regulate glomerular filtration.
What is renal autoregulation?Renal autoregulation is a mechanism that allows the kidneys to maintain constant blood flow and glomerular filtration rate (GFR). This is hugely important to keep homeostasis for several reasons:
The right blood flow and GFR are necessary for excreting metabolic wastes, which avoids poisoning. It is key to maintain the electrolyte balance by finely regulating water and ions reabsorption.In case of high arterial pressure, autoregulation protects the glomerular capillaries from suffering an injury.Mechanisms involved in renal autoregulationTwo mechanisms take part in Renal autoregulation:
Myogenic response: preglomerular arterioles (especially at the level of afferent arterioles) can sense elevations in transmural pressure, which induces their contraction.Tubuloglomerular feedback: when the tubular fluid reaches the macula densa located in the distant tubule, the cells on it can detect changes in the concentration of sodium chloride, which is dependent on flow rate, and induce a modification in the diameter of the afferent arteriole.In conclusion, blood flow and glomerular filtration are two hugely important factors in renal function and both can be regulated by the kidney itself via two mechanisms.
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Hi I new to brainly
what dose paws off mean???
Answer: to stimulate your self
What term refers to the process by which cancerous cells spread throughout the body? a) malignant
b) metastasis
c) benign
d) mitosis
Answer:
I believe the correct answer is B) metastasis
genetic disorders can result when chromatids fail to separate properly during which phase is this a problem
Answer:
anaphase II
Explanation:
Nondisjunction in meiosis II results from the failure of the sister chromatids to separate during anaphase II.
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Which portion of a neuron receives a signal from a receptor or other neurons?.
Answer:
Dendrites - specialized to receive neuronal signals.
The square of a number is 81 less than 18 times the number. Find the number
Answer:
The answer is 9
Explanation:
9~2=81
9<18>9
the square root of 9 is 81 and 9 is less than 18
In order for the egg to reach the uterus, contractions need to occur on the uterine wall to move the egg. What two systems work together to make this
happen?
A) Reproductive and Integumentary
B) Immune and integumentary
C) Circulatory and Digestive D) Reproductive and Muscular
The peristaltic movement of colonic contents triggered by the gastrocolic reflex approximately 1-3 times per day is called
Which phylum is characterized by animals that have a segmented body?.
What kind of cross is used when one of the parents has an unknown genotype?.
Answer:
Test/Back Cross ( a method used to determine the unknown genotype of organsm by crossing it with recessive phenotype)
Answer:
[tex]beinggreat78~here~to~help![/tex]
The term is called a test-cross. This method is used to determine the genotype of someone whose genotype is unknown. For instance, we can see the person's eye color, which is Hazel, but we cannot identify which genotype they have because they have mixed eye colors. You would have to test or back cross to discover their genotype.
In ivan pavlov’s classic experiments, what type of stimulus was the bell?.
Answer:
because he was good
Explanation:god gave him powerful
Five hundred cockroaches of one species were sprayed with a new insecticide. Twenty-four hours later nearly all the cockroaches were dead. A few, however, survived. This outcome illustrates which one of darwin’s key ideas about natural selection and variation?.
Answer:
This shows that over time, some insects can become "pesticide-resistant" meaning that pesticides don't affect them anymore. And this only happens every few generations. Therefore, each generation is being naturally selected and accumulating variations that make them resist the chemicals. This shows that each cockroach's genes are changing to give them variation from the rest of the population.
I hope this helps!
please help with question 6!!
Answer:
Electrical energy
Explanation:
The point of panels is conduct energy from the sun and convert to electrical energy without producing pollution. Therefore, the answer is electrical energy.
Nuclear energy can only be find in explosives or stars.
Kinetic energy is the energy of an object's motion due to the object's motion.
The rate at which an object weathers is determined by many different variables. For example, compare the two ancient Egyptian structures below.
Compare the obelisk from the temple of Luxor in Egypt (left) and the Egyptian obelisk called Cleopatra's Needle in New York (right).
Both structures were carved in Egypt from the same type of rock more 1,000 years ago. However, the obelisk in New York, which was transported there from Egypt in 1881, has since experienced a much higher rate of weathering. What factors likely sped up the weathering process for the structure that was moved to New York?
Answer:
I just answered this question in your other submission of the question. You can look at it if you want!
The obelisk from the temple of Luxor in Egypt (left) and the Egyptian obelisk called Cleopatra's Needle in New York (right).In New York temperature is low,considerable cloudiness with occasional rain showers.
What are factors that can speed up the process of weathering?The amount of rainfall and the temperature can influence how quickly rocks weather. The pace of chemical weathering is accelerated by high temperatures and heavier rainfall. 2. Compared to comparable rocks living in cold, dry climates, rocks in tropical regions exposed to heavy rainfall and high temperatures weather far more quickly.
Chemical weathering is accelerated by moisture. Hot, humid regions are the ones that weather the fastest. In hot, dry areas, it happens extremely gradually. Ice wedging is not possible without temperature variations.
Significant influences in weathering include physical forces like temperature and humidity, chemical forces like oxidation and carbonation, and biological forces like animal and human activity-related burrowing.
Thus,In New York temperature is low,considerable cloudiness with occasional rain showers.
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What type of fossilization results when the whole animal is preserved?
Answer:
ice /freezing fosilization results when the whole animal is preserved
A shorter orbit around the Sun means _____.
Question 2 options:
A shorter day
A shorter year
Fewer moons around the planet
Please help with this question I have
