Answer: Water.
Explanation: Water is a major constituent of all living organisms. The chemical formula of water is H2O, having two molecules of hydrogen (H) and one molecule of oxygen (O). Unlike other biological macromolecules found in living things such as carbohydrates, lipids and proteins which have carbon as their basic unit, water does not contain any carbon atom.
A student wants to cross parent mice to produce offspring with black fur and offspring with white fur. If black fur color (B) is dominant to white fur (b), what should be the genotypes of the parent mice?
Answer:
Bb and Bb
Explanation:
I used a Punnett Square.
The genotype of the parent mice should be (Bb), the offspring produced from the cross between Bb and Bb parents will produce mice with black and white fur in 3:1 ratio.
What is Genotype?
Genotype is the genetic makeup of an organism. Genotype describes an organism's complete set of genes. In mice, the black fur (B) is dominant over the white fur (b).
The cross between parent mice with genotype (Bb) i.e., heterozygous black fur will produce offspring with BB (homozygous black fur), Bb (heterozygous black fur), and bb (homozygous white fur) in 3:1 ratio.
The punnett square showing the cross between Bb × Bb is attached with the answer.
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What is the function of control rods in a nuclear reactor?
make radiation
control steam
make fuel
control reaction rate
The function of control rods in nuclear reactor is to control reaction rate
Explanation:
Control rods are an essential safety system of nuclear reactors. They are employed in nuclear reactors to maintain the "fission rate of uranium or plutonium". Their structures include chemical components such as boron, cadmium, silver, or indium, that are proficient in assimilating many neutrons without themselves fissioning.They form a fundamental element of an "emergency shutdown system "(SCRAM).A control rod is separated from or included into the reactor core to expand or reduce the reactivity of the reactor (increase or decrease the neutron flux). By the variances of the reactivity the changes of neutron power are delivered. This in turn influences the thermal strength of the nuclear reactor, the volume of steam produced, and henceforth the electricity is produced.Answer:
control reaction rate
Explanation:
i took the test
Below, the levels of organization in a multicellular organism are shown from least to most complex.
Which level of organization can be described as several different types of tissues working together to perform a common task?
Cell → Tissue → Organ → Organ System → Organism
Answer:Organ
Explanation:Organ are different tissue coming together to perform a specific function example is liver. Group of organ coming together forms an organ system and they do a specific task example of organ system is digestive system,nervous system.
Answer:
Organ
Explanation:
Organs are made up of several different types of tissues that function together to perform common tasks. An example of an organ is the stomach. Several different types of tissues make up the stomach, and each of the different tissues is composed of specific cell types. The stomach is also a part of the digestive system, which is an organ system in many organisms.
can someone please right 250 word paper about one of these systems
Digestive system
Respiratory system
Muscular and skeletal systems
Nervous system
Endocrine system
Reproductive system
Excretory system
Immune and lymph systems
Cardiovascular system
Answer:
Digestive system
Explanation:
It is comprised of Gastrointestinal Tract called a GI tract or digestive tract and the liver, pancreas and gall bladder.Certain hollow organs make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus.The digestion process takes place in the digestive system by transferring food particles to the GI tract. It begins in the mouth with chewing and ends in the small intestine. As it passes through GI tract it mixes with digestive juices causing large molecules of food to break down into small food molecules.
Which practice can be categorized as a sustainable practice?
Answer:
Which practice can be categorized as a sustainable practice?
Any practices that supports continuity is termed as sustainable such as personal hygiene which enables to curb the ;persistence of infectious diseases. Ordinarily, practicing personal hygiene is sustainable and would greatly reduce infectious diseases globally especially endemic areas.
Explanation:
The force of gravity on an object is the measure of the object's ________.
mass
weight
Answer:weight
Explanation:The gravitational force between a mass and the Earth is the object's weight. Mass is considered a measure of an object's inertia, and its weight is the force exerted on the object in a gravitational field. On the surface of the Earth, the two forces are related by the acceleration due to gravity: Fg = mg.
Answer:
Weight
Explanation:
just did the test on usatestprep
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Who do you think bombed Bill’s house, and why? (one to two sentences) What other types of explosion or fire evidence might you look for within the blast radius? (two to three sentences) Does this incident change your theory on Dr. Fisher’s murder? Explain. (three to five sentences)
The identity of the perpetrator cannot be determined without more information. Evidence of other types of explosions or fire can be found within the blast radius. This incident does not change the theory on Dr. Fisher's murder.
Explanation:Based on the information provided, it is difficult to determine who bombed Bill's house without more context or evidence. To investigate this incident, one might look for other types of explosion or fire evidence within the blast radius, such as remnants of explosives, accelerants, or ignition devices. However, without additional information, it is not possible to draw a connection between this incident and Dr. Fisher's murder.
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Describe an example of how the biosphere might be affected by a change in the hydrosphere in a natural way.
Answer:
Biosphere is affected directly by the change in the hydrosphere in a natural way for example: the rain that falls from cloud and again the cloud forms by the evaporation of water from the ocean.
Explanation:
Rain (hydrosphere) falls into the atmosphere from clouds forming the river water and streams in the biosphere.Plants and animals are dependent over this rain water for their survival in the form of drinking water for their growth.Water then evaporates from the rivers and oceans forming clouds when water vapor condenses.In this way living organism are highly affected by the natural process occurred in the hydrosphere.Which organisms supply energy for all the others?
Answer:
Algae
Explanation:
Along with plants and some bacteria and fungi, are autotrophs. Autotrophs are the producers in the food chain, meaning they create their own nutrients and energy. Kelp, like most autotrophs, creates energy through a process called photosynthesis.
Answer:
That's easy It's plant's.
Explanation:
Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.
2. What is a granum?
Answer:
The collective term for the stack of thylakoids within the chloroplast of plant cells.
Explanation:
The granum contains the light harvesting system composed of chlorophyll and phospholipids.
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Why must the quality and quantity of DNA in cells remain the same from generation to generation?
Explanation:
As all organisms depend on their DNA to live, and any changes in the amount or quality of DNA. It will lead to mutations or death of the organism. If DNA is changed then it will be difficult for the chromosomes to match up and offspring will not be produced. The quality must be maintained. Otherwise other system in the body will not work properly.The quality and quantity of DNA in cells remain the same from generation to generation - to produce offspring and proteins for survival.
Any kind of change either quantity or quality of DNA causes abnormality in the production of proteins or viable produce as genetic information is not as it is supposed to be.
Such changes are called mutation or chromosome abnormality.DNA quality could be changed by the nucleotides being in the wrong order or extra or fewer bases.This results in the coded instructions being wrong and faulty proteins are made or control switches being changed.The body can't function as it should.Thus, for a healthy offspring and body, the quality and quantity of DNA in cells remain the same from generation to generation
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Answer:
Kinetic energy and thermal energy
Explanation:
The water evaporating because of the sun is thermal energy and the water falling from the sky as rain is kinetic energy.
Fill in the blank. Water is considered a ________ resource.
Answer:
water is considered a renewable resource.
Answer:
Renewable, Natural, Limited resource.
Evidence: Farmers Burns and Dexter-Kemp are at their wits end. It has been a rough year farming
their crop of oranges. They have noticed an increase in insects climbing on their fruit. The veins on
the leaves are yellow and there is splotchy mottling all over the leaves. Some of the leaves are falling
off prematurely. After the fruit ripens, it starts to turn green.
What is the disease ?
Answer:
Citrus greening disease
Explanation:
The symptoms sound like citrus greening disease. This disease is characterised by yellowing of the veins in the leaves, splotchy mottling of the entire leaf, leaves that fall off too early, and fruit that can turn green and tastes bitter.
Citrus greening disease is caused by a bacteria, and transferred by insects such as the Diaphorina citri.
what will happen to you if you were cutoff from your peripheral nervous system
Answer:
Symptoms of PNS damage include problems with sexual function, bladder control, blood pressure regulation, digestion and loss of sensation in the hands and feet. ... The cells can revert back to an immature 'repair' cell due to their plasticity, therefore allowing them to repair damage to the PNS.
Fertilization _____.
creates a new cell with half the chromosomes of a gamete
creates four identical daughter cells
is process by which gametes are formed
is the union of an egg and sperm cell
Answer:
Fertilization is the union of an egg and sperm cell, process that occurs in sexual reproduction.
Explanation:
Fertilization or fecundation is a biological process that occurs in the context of sexual reproduction of living beings. It consists of the union of gametes, male (sperm) and female (egg), provided by the parents.
As a result of fertilization, the zygote is produced, a cell that will suffer successive divisions to form the embryo, the beginning of a new individual.
Both reproduction and fertilization are necessary processes for the perpetuation of a species.
The other options do not correspond to fertilization because:
create a new cell with half the chromosomes of a gamete (this process does not occur). Meiosis creates four identical daughter cells .Gametogenesis is the process by which gametes are formed.Learn more:
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Answer:
Fertilization is-
E. Is the union of an egg and sperm cell
Explanation:
Hope this helps have a wonderful day <3
Who knows about the reproduction and development of organisms test, can you tell me all the answers plzzz!
Answer:
im sure i could help with somethingXD
In a particular type of cat, coat color follows the dominant/recessive pattern of inheritance. The allele for a brown coat (B) is dominant to the allele for a white coat (b).
A cross between two white-coated cats would result in what?
Halp ;w;
Answer:
14hbybybybybtvtvtvtvtv
How many calls does the human body have and how many different types are there
Answer:
You have about 37.2 trillion cells in a human body and 200 different types of cells.
Explanation:
2. Which of the following nucleotide bases are BOTH pyrimidines?
A. cytosine and adenine
B. cytosine and guanine
C. thymine and guanine
D. uracil and adenine
E. cytosine and uracil
Answer: E
Explanation: The correct answer is cytosine and uracil. A pyrimidines are aromatic and polar each with different chemical group.
Answer:
E. cytosine and uracil
Explanation:
Pyrimidine is an aromatic compound similar to pyridine. The difference is that it has two nitrogen atoms at positions 1 and 3 in the ring.
The pyrimidine bases have the same six-membered ring structure with two N atoms at the 1,3-positions.
In addition, cytosine has a carbonyl and an amino group, while uracil has two carbonyl groups.
What are the ways that variety is produced in a population?
Answer:
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
Explanation:
About 300 million years ago, the land of earth was in a single mass known as Pangaea. About 150 million years ago Pangaea broke up into the land masses. Based on the diagram which species of animals are more likely to survive on continent ex after the break up of Pangaea then before it broke apart?
Organisms that required warm conditions will survive on continent X after the breakup of Pangaea than before it broke apart.
Explanation:
Pangaea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It is believed that Pangaea existed before the continents broke apart during the Triassic and Jurassic Periods.
An organism is a living thing that functions on its own. After the breakup of Pangaea, the organisms that required warm conditions survived on continent.
Why isn’t blended inheritance a good explanation of heredity
The problem with blended inheritance is that it cannot account for certain observations.
What is heredity?Heredity, also known as inheritance or biological inheritance, is the passing on of traits from parents to their offspring; the offspring cells or organisms acquire the genetic information of their parents through asexual or sexual reproduction.
One of the most serious problems with the blending inheritance hypothesis is that offspring are frequently intermediate in some traits between their parents.
This can result in populations becoming highly uniform over generations, with no new variation emerging.
The issue with blended inheritance is that it cannot explain certain observations, such as traits that sometimes skip a generation or how two people of medium height could have a child who grew up to be much taller than them.
Thus, the blended inheritance is not a good explanation of heredity.
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Describe three of the nonspecific defenses against infection.
Answer:
Explanation:
Nonspecific defenses include physical and chemical barriers, the inflammatory response, and interferons. Physical barriers include the intact skin and mucous membranes. ... An example of such a substance is lysozyme, an enzyme present in tears that destroys the cell membranes of certain bacteria.
When does glycolysis occur
Answer:
glycolysis occurs in the cytoplasm outside the mitochondria and requires no oxygen.
Explanation:
glucose is broken down into pyruvate, the initial reactions of the pathway produce triose phosphate that produces ATP.
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9. Which of the following is a true statement about lake-effect snow?
a) Lake-effect snow is caused when a tropical air mass from the United States moves over the warmer Great Lakes.
b) Lake-effect snow is caused when a continental polar air mass from Canada moves over the warmer Great Lakes.
c) Lake-effect snow is caused when an arctic air mass from Canada moves over the warmer Great Lakes.
d) Lake-effect snow is caused when a continental polar air mass from the United States moves over the warmer Great Lakes.
Temperature of sickle star
Answer:
6,792 K
Explanation:
2 Points
What happens during S phase?
Answer:
S phase is the DNA synthesis phase. During this portion of the cell cycle, the cell replicates its entire complement of DNA. It also forms the centrosome, which is the microtubule-organizing center that will eventually help the cell pull apart the DNA that will be divided between daughter cells.
Answer:
DNA is replicated.
Explanation:
Compare the surface-area-to-volume ratios of the three spheres representing cells. The diagram shows three spheres, A (r = 1mm, Surface area = 4π, Volume = 4/3 π); B (r = 2mm, Surface area = 16π, Volume = 32/3 π); C (r = 3mm, Surface area = 36π, Volume = 108/3 π) Which of the three cells, if any, has the greatest surface-area-to-volume ratio? A. The cell with radius 1 B. The cell with radius 2 C. The cell with radius 3 D. All three cells have the same surface-area-to-volume ratio.
Answer:
A. The cell with radius 1B
Explanation:
The first sphere's volume is 4/3 compared to 32/3 and 108/3
The surface-area-to-volume ratios of the three spheres representing cells. then The cell with radius 1B.
What is surface area?A three-dimensional object's surface area is the sum of all of its faces. Real-world applications of the concept of surface areas include wrapping, painting, and eventually building things to achieve the best possible design.
An object's surface area is the total area that all of its surfaces occupy. The formulas we will learn in this post make it simple to determine the various surface areas that various 3D shapes in geometry have.
Every geometric shape has a different surface area formula, but the goal of all of them is to determine the total area occupied by all of the objects' faces.
Therefore, The surface-area-to-volume ratios of the three spheres representing cells. then The cell with radius 1B.
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