Answer:
Epinephrine initiates a signal transduction pathway that involves the production of cyclic AMP (cAMP) and leads to the breakdown of glycogen to glucose, a major source of energy for cells. But glycogen breakdown is only part of the fight-or-flight response that epinephrine brings about; the overall effect on the body includes increased heart rate and alertness, as well as a burst of energy. Given that caffeine blocks the activity of cAMP phosphodiesterase, propose a mechanism by which caffeine ingestion leads to heightened alertness and sleeplessness.
Explanation:
A wasp is a flying insect. In wasps, wing length is coded for by a single gene. Two scientists studying wasps hypothesize that short wings are recessive to long wings. Which of the following observations best supports this hypothesis?
A. Wasps with long wings are less likely to survive.
B. Wasps with long wings can produce offspring with short wings.
C.Wasps have wing lengths ranging from very long to very short.
D.Wasps with short wings prefer to mate with wasps with long wings.
Answer:
answer c is your answer final answer
Answer:
Your Answer Is C
Explanation:
Wasps have wing lengths ranging from very long to very short.
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Artesian springs bring pressurized groundwater to the surface through which feature of Karst topography?
streams
caves
fissures
igneous rock
Answer:
The correct answer is D) Fissures
Explanation:
Karst is a topography or landform that is created by the dissolution of soluble rocks beneath the surface by waters from the surface or below.
Fissures are formed when because of earth movements there is the occurrence of a long, narrow opening, in the earth.
Artesian springs refer to the water coming out through these cracks or openings in the earth onto the surface of the Karst topography.
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Option F. It is moist and cool with decaying debris.
Answer:
F. It is moist and cool with decaying debris.
Explanation:
I know this because an earth room always needs their supplement from the dirt in order to stay moist and wet during any weather.
What are the two stages of cellular respiration
Answer:
animal cell.
Explanation:
plant cell.
3) Write 3 sentences that explain how limiting factors can change the carrying capacity of
an ecosystem?
Answer:
Limiting factors determine carrying capacity. The availability of abiotic factors and biotic factors dictates how many organisms can live in an ecosystem. Carrying capacity is also impacted by the availability of decomposers. ... Humans can also alter carrying capacity.
When the cells start multiplying at an abnormal rate it leads to complications in our body.What could be the reason for this?Find Out
Answer:
the reason is often cancer.
Explanation:
cancer cells multiply rapidly and cause tumors
Which cells in the body are targeted by HIV?
red blood cells
platelets
B cells
T cells
The genetic code was elucidated through the use of polyribonucleotide's synthesized either enzymatically or chemically in the laboratory. Given what we now know about the genetic code, how would you make a polyribonucleotide that could serve as an mRNA coding predominantly for may Phe residues and a small number of Leu and Ser residues?
What other amino acid(s) would be encoded by this polyribonucleotide, but in smaller amounts?
Answer:
The genetic codes are responsible for coding the amino acids. The messenger RNA (ribonucleic acid) consists of triplet codons, which is responsible for the synthesis of respective amino acid sequences. The UUU codes for the phenylalanine amino acids. Similarly, the incorporation of 5 mixtures such as ADP, GDP, CDP, and UDP can alternatively produce the mRNA polymer with the serine and lysine residue in a small amount.
EXPLANATION:
The genetic codes are responsible for coding the amino acids. The messenger RNA (ribonucleic acid) consists of triplet codons, which is responsible for the synthesis of respective amino acid sequences. The formation of the RNA stand is done by using ADP, GDP, CDP, and UDP (adenosine, guanosine, cytosine, and uridine diphosphate). It requires no template for the formation of polymers. Therefore incorporation of UDP is done by the incorporation of polynucleotide phosphorylase, which will result in the formation of poly U. The UUU codes for the phenylalanine amino acids. Similarly, the incorporation of 5 mixtures such as ADP, GDP, CDP, and UDP can alternatively produce the mRNA polymer with the ser and lysine residue in a small amount. For example in the stretch of polynucleotide UUU presence of one of the following codon UUA, UUG, CUU, CUC, CUA, CUG as well as UCU, UCC, UCA, UCG, and AGU can synthesize leucine and serine residues. (UUC)n can synthesize the polymer of phenylalanine, serine, and incorporation of few A and G will synthesize leucine. However, the presence of A, C, and G can also synthesize a small amount of tyrosine, isoleucine, and cysteine residue.
What can leaves do that roots cannot?
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carry out photosynthesis
Answer:
2 carry out photosynthesis
Roots in the ground, it cannot.
Which of the following best describes the function of the Golgi apparatus within plant and animal cells?
No links please!
Answer:
The Golgi apparatus
Explanation:
The Golgi apparatus packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination.
Explain how where a person lives might affect his or her mood.
Answer:
When they go through something horrible for example (death,relationship break ups, and friendships ending etc.) that can affect their personality and their emotional stability they can also change to a whole different person.
Microbiology refers to the study of
A. Microorganisms including bacteria, viruses and parasites
B. All multi-cellular organisms
C. All eukaryotic organisms
d. Microorganisms including all plants, animals and fungi
Capillaries are very thin, narrow blood vessels that allow for the transfer of oxygen, carbon dioxide, and nutrients. The image shows
how normal red blood cells and sickle-shaped red blood cells flow through a capillary,
Use information in the image to describe two ways that the sickle cell gene mutation affects the ability of red blood cells to perform
their normal function
Answer:
less packaging of oxygen
Explanation:
normal RBC (red blood cells) have a large surface area for oxygen packaging due to its biconcave shape but when mutation occurs the RBC being produced by the short bones is sickle shaped reducing surface area of haemoglobin exposed, responsible for packaging oxygen so tissues don't get right amount of oxygen
what is basement membrane? and what is it made up of ? in detail plss help
The zygote is an example of a
cell in humans.
O A. pluripotent
O B. totipotent
O C. placental
O D. multipotent
Answer:
I think it it c
Explanation:
if not I'm sorry
The zygote is basically an example of totipotent cell in humans. The correct option is B.
What is totipotent cell?Cell potency refers to a cell's capacity to distinguish into various types of cells. The greater a cell's potency, the more cell types it can differentiate into.
A totipotent cell is a single cell that, when given the proper motherly assistance, can give rise to a new organism.
A totipotent cell is one that can generate all extraembryonic tissues, as well as all body tissues and the germline.
The term "totipotent" refers to a cell that has the ability to split and produce all differentiated body cells, both embryonic and extraembryonic.
Zygotes and spores are instances of totipotent cells in animals.
Thus, the correct option is B.
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Please answer the questions that have “type here”
Earth science
Answer:
Earth science or geoscience is the study of the Earth's structure, properties, processes, and four and a half billion years of biotic evolution. Understanding these phenomena is essential to the maintenance of life on the planet. There are four basic areas of Earth science study:
Geology: Science of the EarthMeteorology: Science of the AtmosphereOceanography: Science of the OceansAstronomy: Science of the Universe
Question 2
Which is a plausible solution to human activities contributing to increasing amounts of carbon dioxide in the atmosphere?
А
Use only alternative energies for the production of electricity
B
Require all new automobiles manufactured to run on electricity rather than gasoline.
с
Plant more trees and decrease deforestation practices so that more carbon dioxide can be absorbed from the atmosphere.
D
Require everybody to use mass transportation or methods of transportation that do not require burning fossil fuels, such as riding bicycles,
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Answer:
hmm
Explanation:
On Earth, human activities are changing the natural greenhouse. Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.
Plausible solution to human activities contributing to increasing amounts of carbon dioxide(carbon emission) in the atmosphere are :
Use only alternative energies for the production of electricityCarbon emission (greenhouse gas emissions) from human activities strengthen the greenhouse effect, causing climate change. They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution.
Alternative energy is energy that is collected from renewable resources that are naturally replenished on a human timescale, hence contributing to betterment of environment.To know more about carbon emission here
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A scientist gathers data on the growth of a population over time. A graph of the data is shown below.
Which statement below best describes the graph at point X?
A. The population is declining
B. The population is increasing
C. The population has reached the carrying capacity of the ecosystem
D. The population has exceeded the carrying capacity of the ecosystem
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A mycologist is a specialized plant pathologist dealing in soil bacteria.
True
False
Answer:
false
Explanation:
I think mycologist is about mushrooms and yeast.
Answer:
False
Explanation:
Mycology is the study of fungi, not soil bacteria.
List developmental changes in animals
Name one function of the respiratory system other than gas exchange?
Answer:
another function of respiratory system is
it allows to breathe
6. Compare the DNA of an offspring to the DNA of its parents.
Answer: In DNA the parent duplicates itself through a process known as mitosis. Any offspring is going to have the same exact DNA as the parent. (same characteristics, everything).
The comparison of the DNA of an offspring to the DNA of its parents is determined by the fact that every offspring gets 50% of its genome from each parent, but it is always a different 50%.
How does the DNA of parents compare to that of offspring?In the process of sexual reproduction, meiosis produces haploid gametes that fuse during fertilization to produce a diploid zygote. In other words, an offspring inherits half of the genetic material from each parent. The children resemble their parents, but they are not identical to them.
During the process of meiosis, gametes get a random chromosome from each pair. This means that there are over 8 million possible DNA combinations from 23 chromosome sets. Due to this, the difference in the genetic material or DNA sequences is occurred due to the process of variations between them while DNA copying.
Therefore, the comparison is made due to the mechanism through which every offspring gets 50% of its genome from each parent, but it is always a different 50%.
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