Answer:
Explanation:
The transformation of a zygote into an embryo adheres both to nature and to nurture: not only genetics but also environment determines the outcome. This idea has assumed many forms. A territory in the early sea urchin blastula contains clones of founder cells, and each clone contributes exclusively to one territory (Cameron & Davidson, 1991). Both the lineage of a founder cell, i.e. its nature, and the position of a founder cell, which determines how it is nurtured, contribute to its fate. Fertilisation, the topic of the first Forum, fixes the genes; interblastomere communication, the topic here, regulates gene expression. Blastomeres communicate like any other cell – via ligand-receptor interactions and through gap junctions. Saxe and DeHaan review these mechanisms. The definition of ligands and receptors becomes broadened in this context, and cell adhesions as well as gap junctions enter into the story. In spite of these entanglements, it appears that nature uses the same sorts of mechanisms to get cells to specialise that she uses to keep them talking. Thus, neurons and glial cells signal to one another via glutamate receptors and gap junctions (Nedergaard, 1994). Likewise, we expect neurotransmitters (and neurotransmitter transporters) to help signal differentiation. The biophysicist may ask whether electrical properties also play a role, but that we reserve for another Forum. If gap junctions figure in development as fusion pores that pass small molecules and electrical signals between blastomeres, another parallel suggests itself. Brian Dale asked in the first Forum: How does a spermatozoon activate an oocyte? This question, which concerns gamete communication, has produced two schools of thought and remains controversial (Shilling et al., 1994). Do sperm activate oocytes via contact-mediated mechanisms or through fusionmediated mechanisms? Or do both mechanisms occur, as they appear to in development?
What causes lactic acid fermentation?
A. too much ATP
B. an upset stomach
C. insufficient oxygen
D. too many mitochondria
C
Explanation:
Lactic fermentation can be caused by lack of oxygen inside of the muscle cells.
What percentage of renewable energy do apple retail stores run on?.
Answer:
100 percent renewable energyThe company recently shared new details about its $4.7 billion spend in Green Bonds to support environmental projects around the world. While running on 100 percent renewable energy for nearly three years, Apple has also been helping its suppliers reach their renewable energy goals.
A glucose molecule is the
Answer:
The answer is B) monomer of starch and cellulose.
How can you tell which side of the heart is the anterior surface and which side is the posterior surface
The anterior side of the heart is the side the uppermost point or peak is pointing to. The posterior surface lies opposite to the uppermost point.
What is heart?The heart is a fist-sized organ that is located around the chest region or breast bone that pumps blood to the body. It's the primary organ of the circulatory system. The heart have four main chambers made of muscle and powered by electrical impulses. The brain and nervous system influence heart's function.
Therefore, The anterior side of the heart is the side the uppermost point or peak is pointing to. The posterior surface lies opposite to the uppermost point.
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D) Fill in the blanks to contrast the
details in the poem and the story.
The details in the poem and the story
are different. In the poem, the narrator
A) gets along well with sis
B) is jealous about sis camp
C) thinks sis causes trouble
In the story, the brother, Joseph,
A) makes Megan angry
B) teaches Megan to relax
C) tells Megan not to cook
To complete the blanks, read carefully both the poem and the story and then analyze the interaction between the characters.
What is the difference between a poem and a story?A story is written in the most traditional writing form; while the poem is written in verses. Moreover, stories are likely to include more descriptions and narrative details, while poems often use elements such as metaphors, similes, etc.
How to analyze and compare the story and poem?This question requires you to identify the relationship between the narrator and sis, and Joseph and Megan to do this:
Read carefully both the story and poem.Identify and analyze the way the characters mentioned interact.Choose the best option for each question.Note: This question is incomplete because the story and poem are missing; due to this, I answered them based on general knowledge.
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Match the word with the correct definition
Answer:
1. e
2. f
3. h
4. a
5. g
6. b
7. i
8. d
9. c
Explanation:
Check out the attachment.
The infection that puts women at risk for cervical cancer is.
Which product is the result of mitosis?
two genetically identical nuclei
four sperm and four eggs
four genetically identical nuclei
two sperm and two eggs
Answer:
two genetically identical nuclei
Explanation:
The result of mitosis is two identical daughter cells, genetically identical to the original cell, all having 2N chromosomes.
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Which division of the ANS causes a decreased heart rate, vasodilation of visceral blood vessels, and vasodilation of the skin's blood vessels
The parasympathetic nervous system division causes a decreased heart rate, vasodilation of visceral blood vessels, and vasodilation of the skin's blood vessels.
What is the function of parasympathetic nervous system?The parasympathetic nervous system is responsible for the rest and digestion response when the body is relaxed, resting, or feeding. The parasympathetic nervous system decreases respiration and heart rate and increases digestion.
So we can conclude that parasympathetic nervous system division causes a decreased heart rate, vasodilation of visceral blood vessels, and vasodilation of the skin's blood vessels.
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PLEASE ANSWER ASAP: Which statement correctly explains how nutrients and energy move through an ecosystem?
A.Energy and nutrients both flow in only one direction and are not cycled.
B.Energy is cycled and nutrients flow in one direction
C.Energy and nutrients are both cycled
D.Energy flows in one direction and nutrients are cycled
When it comes to the movement of nutrients and energy in the ecosystem, nutrients are cycled while energy moves in a specific direction.
Energy and nutrients in the ecosystemEnergy moves in the ecosystem from the producers to the consumers, and finally to the decomposers.
Nutrients, on the other hand, cycle between various components of the ecosystem - atmosphere, lithosphere, geosphere, hydrosphere, biosphere, etc.
Thus, energy flows in one direction while nutrients are recycled.
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What is the difference between the domains eukarya and bacteria.
Answer:
The main distinction between bacteria and eukaryotes is that bacteria lack a genuine nucleus and membrane-bound organelles, whereas eukaryotes have both.
Explanation:
^^
The breaststroke is started in the dive position in the water
Question 4 options:
True or false
The breaststroke is not started in the dive position in the water. Therefore, the statement is false.
What is breaststroke?The breaststroke is not started in the dive position in the water. It started in a stationary position with the swimmer, which faces forward and floats in the water.
The swimmer then takes a breath followed by the beginning of the stroke by pulling both arms back simultaneously and lifting their head and shoulders out of the water.
The legs are brought together by the swimmer andglides forward before the repetition of the arm and leg movements. It is the butterfly stroke because of the dive position, as the swimmer resurfaces both arms extended above the head to begin the stroke.
Therefore, the breaststroke is not started in the dive position in the water as it is started in a stationary position with the swimmer facing forward and floats in the water.
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Please help!!! Need the answerr
Answer:
C
Explanation:
Mined materials are used for different purposes
Mining is the process of removing valuable materials from the Earth's surface, including the oceans, hence option C is correct.
What is mining?Extraction of useful materials from the ground is known as mining. A few notable exceptions, a mineral is an inorganic substance found in nature that has a unique chemical composition, physical characteristics, or molecular structure.
Mined materials include coal, gemstones, and iron ore, to name a few. The raw substance used to make iron is called iron ore. Mining has existed since the primordial era.
In essence, it is the procedure used to extract valuable information from large amounts of data or data warehouses.
It is clear that the phrase itself is a little ambiguous. Coal or diamonds are the end product of the extraction process in the instance of mining for coal or diamonds.
Therefore, humans mine materials for different purpose.
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WILL GIVE BRAINLIEST IF UR RIGHT!
Which action is necessary to halt the decline in biodiversity?
continue mining practices as they are
continue using fossil fuels at the present rate
adopt ecological conservation practices
adopt laws that address issues of economy over environment
Answer:
"adopt ecological conservation practices"
Answer:
adopt ecological conservation practices
Explanation:
please i need the last brainliest
You push an object really hard but it does not move. Has “work” been done?
Yes
No
Answer:
No
Explanation:
Work is when motion is accomplished
Answer:
No
Explanation:
Obviously because if it doesnt move there has been no progress
crick originally thought that each type of nitrogenous base hydrogen bonded with its self (A-A, T-T, etc.) why was this incorrect? what makes this impossible?
True or False: Traits that are beneficial in one environment will always be beneficial in another environment
Answer:
False.
Explanation:
Natural selections favors traits that are beneficial in a specific environment. Traits that are helpful in one environment might actually be harmful in another.
ALL the following are REACTANTS to cellular respiration EXCEPT.
A
Glucose
B
Oxygen
C
Carbon dioxide
D
All the above
Answer:
the correct answer is A glucose
Which of the following environment changes is most difficult to survive
Answer:
Transition from a meadow to a forest
Explanation:
In any population, some individuals will have more kids than other individuals (just by chance). Some of those individuals will be "lucky" and survive. Explain the cartoon and how it shows this idea.
Answer:
By people stepping on the little bugs, it kills them. and when they are born some will die and others won't
Explanation:
The cartoon refers to the principle of natural selection, which operates in many species, including bugs.
When individuals of a species reproduce, their offspring inherit certain traits or characteristics that can be advantageous or disadvantageous. In the case of bugs, some may have stronger exoskeletons, faster reflexes, or better camouflage, which can help them survive being stepped on or avoid being noticed by predators.
As a result, those bugs with advantageous traits are more likely to survive and reproduce, passing on their favourable characteristics to the next generation, while those without these traits are more likely to die. This is an example of natural selction.
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What is Mendelian inheritance
Part F
The rate at which an object weathers is determined by many different variables. For example, compare the two ancient
Egyptian structures below.
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:
One thing that can speed this is up is a building not being vacant or being in direct sunlight for far too long.
I think this is what you need, right?
Proteins are produced in the cell's ____.
Answer:
Amino acid cells
Explanation:
Protein is produced in cells amino acids go to DNA then RNA
------------------------⚡ Awesome ⚡------------------------12.
A lizard species mostly eats fruit from one
particular type of tree. If a virus kills most of
these trees, which individual lizards will most
likely survive?
A.
lizards that can climb higher in the fruit trees
B.
lizards that have darker coloration
C.
lizards that can find other types of food
D.
lizards that produce more offspring
Absorption of glucose from the gut lumen depends on.
Answer:
protein and starch
Explanation:
the absorption depends on protein and starch
Do you think that the number of birds that are killed by wind turbines each year is acceptable? Why or why not? State your opinion and give reasons to support it. Answers must be at least three sentences.
Answer:
One of the most commonly repeated criticisms of wind power is that it kills birds. The giant spinning turbines are basically bird death traps—and often they cut through prime flying space, making the carnage even worse. At least that's the story. But how many birds really do die?
If you look around for statistics about bird deaths from wind turbines get you wildly different numbers. Some say just 10,000 birds a year
Explanation:
One of the most commonly repeated criticisms of wind power is that it kills birds. The giant spinning turbines are basically bird death traps—and often they cut through prime flying space.
What are the benefits of wind power?The majority of wind power or wind energy is generated through the use of wind turbines. Wind power is a popular, long-lasting, and renewable energy source that has less of an environmental impact.
The process by which the wind is used to generate mechanical power or electricity is referred to as wind power or wind energy. The kinetic energy of the wind is converted into mechanical power by wind turbines.
This motion energy, or wind flow, is utilized by humans for numerous purposes: flying a kite, sailing, and even making electricity. The process by which the wind is used to generate energy is both referred to as "wind power" and "wind energy."
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removal of heavy metals from the soil can be done by trees.justify
please answer fast! 69 points
Answer:
The answer is D
Explanation:
Renewable resources need to be protected
Answer:
Renewable resources need to be protected.
Explanation:
Many resources deplete if handled irresponsibly. Renewable resources will endure a lot longer if used correctly and effectively. People may reduce their waste and use natural resources effectively by practicing conservation.
If a square-eyed, orange pet mates with a round-eyed, green pet, can they have any round-eyed orange
offspring? Explain
Yes, round-eyed orange offspring is formed because this round eyed feature is present in one of the mating organisms.
Can offspring of round-eyed orange produced?
If a square-eyed, orange pet mates with a round-eyed, green pet, they can also have round-eyed orange offspring because this round eyed feature is present in one of the mating organisms.
So we can conclude that round-eyed orange offspring is formed because this round eyed feature is present in one of the mating organisms.
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PLEASE ANSWER ASAP: In the food chain- grass ---> grasshopper ----> bird ------> snake
Who would be affected the most?
Answer:
All would be affected but the snake would probably be most effected
Explanation:
If the bird was removed from the chain, the snake would have no valid food source leading to a decrease in population for the snakes.
Although the population of the grasshopper would increase because there is no birds to eat the grasshoppers the snake would probably still be most affected because they would all die off as they would have no valid food source
