The poly(a) sequence that is added to rna during processing: _________. select all that apply.
Mr. Bondi suggests there doesn't have to be some chaotic event, such as an explosion, to explain the origin of the universe. Our universe was and just is. It looks the same from every location and does not change. Mr. Bondi believes in the _____.
A.) oscillating universe theory
B.) inflation theory
C.) steady state theory
D.) big bang theory
Answer: C.) steady state theory
Explanation:
Steady State Theory is based on the so-called "Perfect Cosmological Principle," according to which the Universe is homogeneous, isotropic and immutable. This hypothesis did not deny the expansion of the universe but rather believe in the continuous production of matter to counterbalance the expansion observed, keeping the average density constant. This theory was proposed by Herman Bondi, Thomas Gold, and Fred Hoyle, in 1948. The steady-state theory has lost almost all its adherents when it was discovered the cosmic background radiation, which this theory could not explain.
How are hazards identified during mission planning?
Hazards are identified in mission planning through a process known as risk assessment, comprising of identification of hazards, assessment of risk, development of controls and evaluation of control effectiveness, with continuous evaluation ensuring effective hazard management.
Explanation:Hazards are identified during mission planning through a process known as hazard analysis or risk assessment. This involves reviewing all aspects of the mission, including its objectives, resources, and environmental conditions. It consists of four key stages: identification of hazards; assessment of risk; developing controls; and evaluation of control effectiveness.
For instance, if the mission is launching a satellite into space, potential hazards might include equipment failure, adverse weather conditions, or human error. Each of these risks is assessed in terms of its potential impact on the mission and the likelihood of its occurrence. Controls are then developed to help mitigate these risks, such as double-checking equipment, checking weather forecasts, and providing thorough training to all personnel involved.
Throughout this process, continuous evaluation is conducted to ensure that all identified hazards have been effectively managed, and the mission can be carried out safely and successfully.
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Chlorophyll b absorbs in green wavelengths of light that chlorophyll a cannot absorb. in this respect, chlorophyll b acts as
Chlorophyll b is an accessory pigment. Chlorophyll a is an essential pigment.
What are essential pigments?
The range of wavelengths that a pigment absorbs is known as its absorption spectrum. The absorption spectra of three important pigments involved in photosynthesis—chlorophyll a, chlorophyll b, and -carotene.
Chlorophylls come in five main categories: chlorophylls a, b, c, and d, as well as bacteriochlorophyll, a similar chemical found in prokaryotes. The two primary photosynthetic pigments in plants are chlorophyll a and chlorophyll b. Blue and red wavelengths are absorbed by chlorophyll molecules.
Therefore, Chlorophyll b is an accessory pigment. Chlorophyll a is an essential pigment.
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why does the meiosis produce cells with only half the amount of DNA? How does this aid in the formation of a healthy zygote?
Each day, Earth receives 10,000 times the total energy used by all human beings. The source of this energy is _____. the sun cosmic rays the moon ocean tides
Answer:
The correct answer is the sun.
The sun is the ultimate source of energy of a food chain. This energy is trapped by the green photosynthetic plants under the process of photosynthesis.
Plants only absorb 2-8% of the PAR (photosynthetically active radiation- 400 700 nm) fallen on earth.
In addition, only 10% of the energy is transferred from one trophic level to the next one and rest 90% is dissipated in metabolic process or heat.
It is the reason that earth receives 10,000 times the total energy used by human beings as we are present on I and II trophic levels in a food chain.
The oily secretion that lubricates the skin and inhibits growth of bacteria on the skin is called _____.
What is the source of oxygen in the epipelagic zone?
Photosynthesis and diffusion from deeper ocean zones
Photosynthesis and diffusion from the air
Respiration and diffusion from deeper ocean zones
Respiration and diffusion from the air
The correct answer is (B) Photosynthesis and diffusion from the air
Dissolved oxygen enters the water from photosynthesis and through air. The The aeration of water can be caused by wind. From the air oxygen diffuse into the water and gets mixed in the it through circulation. The oxygen is also produced as a waste product of photosynthesis from blue-green algae, phytoplankton, etc which is added in water.
Answer:
b
Explanation:
What makes up the largest portion of the hydrosphere
One difference between mitosis and meiosis is:
A. Mitosis produces cells genetically identical to the parent cell, but meiosis does not
B. Mitosis produces more daughter cells than meiosis
C. Mitosis produces haploid cells, but meiosis produces diploid cells
D. Mitosis requires only one parent cell, but meiosis requires two parent cells
Mitosis divides a parent cell into two identical daughter cells, each of which has the same amount of chromosomes. Meiosis, on the other hand, creates four distinct daughter cells, each of which has half as many chromosomes as the parent cell.
Answer : A, B
Does mitosis result in cells that are exactly like the parent cell?Daughter cells that are genetically identical to their parent cells are created during mitosis. The cell divides its copied chromosomes equally to ensure that each daughter cell has a full set before copying, or "replicating," its chromosomes.
A single cell divides into two identical daughter cells during the process of mitosis (cell division). facts Describe meiosis. A single cell splits twice during the meiotic process, resulting in four cells with half the original genetic material.
Despite being all haploid, the gametes created during meiosis are not all genetically identical.
The nuclei produced from meiosis are not genetically identical and they carry one chromosomal set only. This is half the number of chromosome sets in the initial cell, which is diploid.
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Why are 90% of sexually ambiguous newborns assigned to the category of "female" in societies with advanced medical technology?
Hippocampal cells that become active only when the subject is in particular locations are called spot cells. location cells. complex cells. place cells. simple cells.
Efflorescence that appears on the surface of a wall of brick, stone, or concrete masonry can be caused by
Efflorescence on masonry can be caused by the formation of salt crystals, water's freezing and thawing, and physical disturbances from plants and animals.
Efflorescence that appears on the surface of a wall of brick, stone, or concrete masonry can be caused by several factors, including the formation of salt crystals within the rock, environmental factors like freezing and thawing of water in cracks, as well as physical disturbances such as cracking from plant roots and exposure by burrowing animals. This process occurs when water moves through a wall bringing salts to the surface. As the water evaporates, it leaves the salt deposits behind, which can cause a white, powdery residue to appear on the surface.Efflorescence is a common phenomenon observed on the surface of various masonry materials such as brick, stone, or concrete. It occurs when water containing dissolved salts migrates through the masonry substrate. As the water reaches the surface and evaporates, it leaves behind the salt deposits, resulting in the formation of efflorescence.
Name the color of light that is least effective in photosynthesis.
A student is studying mitosis, in which a cell divides to form two cells. Which of these shows the CORRECT mathematical model for the process if Nold shows the number of chromosomes in the parent cell and Nnew shows the number of chromosomes the individual daughter cells?
A) Nnew = Nold
B) Nnew = Nold/2
C) Nnew = 2 × Nold
D) Nnew = 4 × Nold
The right answer is A) Nnew = Nold
Mitosis is a process of cell division that makes it possible to obtain from a mother cell two identical daughter cells to each other (and at the same time to the mother cell). So their chromosome number of the daughter cells is identical to those of the mother cell.
Which soil horizon will contain the greatest amount of organic material?\?
Why is cellular respiration important to the biosphere?
Seismic waves and water can weaken soil, causing it to move. This is called _____.
A.flooding
B.liquefaction
C.seismic shifting
D.earthquake erosion
this is called LIQUEFACTION
The correct answer from these choices is liquefaction.
What is the production of sperm cells called?
CHANCE TO GET BRAINLIEST Which term is also the "spruce-moose" biome that characterizes much of Canada? A. temperate forest B. tundra C. taiga D. grassland
The term that is used is "tiaga".
Explanation:
Tiaga is the russian name which is used for boreal forest and which is also called as "Spruce moose". The reason behind this is that characteristic animals of this biome also includes moose, that's why it is sometimes called spruce moose. This biome covers the area of province quebec of Canada.
The difference in height between successive high and low tides is called the tidal _____.
Explanation:
In sea levels, tides used to fall and rise due to the gravitational forces exerted by the rotation of Earth, Sun and Moon.
This difference in height between successive high and low tides is called the tidal range as it tells the exact amount of rise and fall.
The tidal range changes according to the change in location of Sun and Moon and it is not constant.
A student sets up a compost bin outdoors. Inside the bin microorganisms convert the student’s vegetable and paper scraps into rich fertilizer.Which of the following best describes the role that these microorganisms play in natural habitats?
A The microorganisms help balance the numbers of producers and consumers.
B The microorganisms help keep nutrients cycling through the ecosystem.
C The microorganisms turn solar energy into sugars.
D The microorganisms function as autotrophs.
Answer:
B The microorganisms help keep nutrients cycling through the ecosystem.
Explanation:
Microbes form a very important part of the ecosystem. Along with other decomposers like fungi they help to recycle the nutrients.
Microbes break down dead and decaying matter, plant litter and animal waste into smaller components for their own utilization. This decomposition process is accompanied by release of chemicals like nitrogen, phosphorus and carbon in soil and atmosphere which can be again used by plants and animals. Once these animals and plants die, they again go through the same cycle. Hence microorganisms help keep nutrients cycling through the ecosystem.
Which is the term for the group of proteins that organizes and condenses long strands of DNA into tight coils?
A. Telomeres
B. Centromeres
C. Chromatids
D. Histones
Histones is the term for the group of proteins that organizes and condenses long strands of DNA into tight coils.
DNA is made up of several chromosomes, made up of long strands of DNA coiled in a tight spiral with proteins called histones.
Histones are protein molecules found on chromosomes responsible for compacting DNA to fit in the nucleus.During cell division, chromatin coils into dense fibers that eventually coil around each other to form a tightly coiled chromosome, a bundle of DNA and histones.Therefore, we can conclude that histones is the term for the group of proteins that organizes and condenses long strands of DNA into tight coils.
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HELP ENVIRONMENTAL SCIENCE!!!!!!!!!!!
What was the most important result of the meireki fire of 1657 in edo?
a) it decreased the population of the city, thereby reducing timber demand
b) it cleared large tracts of the city for agriculture
c) it caused the ruling class to realize the dangers of deforestation
d) it decreased competition between the daimyos for resources
Option C i.e It caused ruling class to realize dangers of deforestation is the correct answer.
Meireki fire of 1657 in Edo caused huge loss of lives and two-third of the city got completely destroyed.
The most important result of the fire was that the ruling class realized the dangers of deforestation and began to make laws for the protection of forests and trees.
Many crops such as tomatoes and corn are now routinely genetically manipulated to become more resistant to disease and herbicides. what is one disadvantage of this genetic resistance?
As the crop of tomatoes and corn get genetically resistant to diseases and pest attacks, the other crops which grow along with the main crop specifically the weeds get destroyed. This is so because the pest that earlier attacked the tomatoes and corn now only have weeds and other unwanted plants that can be attacked and fed upon. This may disturb the micro ecosystem with in the agricultural field.
Which part of the brain is associated with ten of the 12 pairs of cranial nerves?
Changes in a person's height and weight during middle adulthood are accompanied by a decline in
The DNA sequence TTG is changed to TCG and produces a new protein. Which type of mutation is this?
Since the resulting nucleotide is offset from its initial sequence by only one parallel nucleotide we can definitely say it is Missense mutation. This sort of a mutation is known as a nonsynonymous mutation, there is only one direct substitution that occurs in the codon producing a different amino acid.
The nurse is caring for a client with burns receiving opioid analgesics and who is sedated. which medications should the nurse anticipate to be prescribed by the primary healthcare provider to overcome this side effect of the opioid analgesics?
You wake up early in the morning and your room is fairly dark. you look over and see your shirt hanging on a hook. you know it's your red shirt because you hung it up there before you went to bed, but in the dark you can't see its color. it looks dark gray to you. why is that?
Answer:
In the dim light, the cones in your eyes are ineffectual.
Explanation: