Gene variants that arise by mutation and exist at the same relative locations on homologous chromosomes are called alleles. Heterozygosity and homozygosity refer to individuals having two different or identical alleles of a gene on their homologous chromosomes, respectively.
Explanation:Gene variants that arise by mutation and exist at the same relative locations on homologous chromosomes are called alleles. In diploid organisms, two different versions of a gene on their two homologous chromosomes result in being heterozygous for that trait. Conversely, when an organism has two identical alleles of a gene on their two homologous chromosomes, they are considered homozygous for that trait.
Which statement about the pancreas is not true?
A. It is an endocrine organ in the abdomen.
B. It release chemicals into the digestive system.
C. It releases insulin to increase glucose levels.
D. It release hormones into the bloodstream.
The incorrect statement is C, stating that insulin is released to increase glucose levels. Insulin actually helps to lower blood glucose levels by encouraging cells to absorb glucose.
Explanation:The statement about the pancreas that is not true is: C. It releases insulin to increase glucose levels. The pancreas indeed functions as both an endocrine and exocrine gland. As an endocrine gland, it releases hormones like insulin and glucagon into the bloodstream. Insulin's role is to decrease blood glucose levels by facilitating the uptake of glucose into cells. Conversely, glucagon works to increase blood glucose levels by stimulating the liver to convert glycogen to glucose.
As an exocrine gland, the pancreas secretes digestive enzymes into ducts that lead to the gastrointestinal tract, aiding in the digestion of food. Moreover, the pancreas produces bicarbonate to neutralize the acidity of the contents entering the small intestine from the stomach.
Describe the two types of vascular tissue
Answer:
1; Xylem 2; phloemExplanation:
Susan is planting her garden and choosing plants at the local plant nursery. She tells the clerk that she wants to plant perennials in her front garden bed. How often is Susan expecting the plants that she chooses to germinate and flower? A. Grow into larger, permanent trees and shrubs
B. Sprout every year for two years
C. Sprout every year, year after year
D. Sprout this year and need to be replanted
Answer:
C. Sprout every year, year after year
Explanation:
The perennial plants are the plants that live for more then two years, thous some may argue that they are plants that live more then three years. Whichever the case, they are not short-lived plants, but are capable of surviving for numerous years, unlike the annuals and biennials. Theoretically, the shrubs and trees would fall into this category, but they are classified separately, and this term is not used for them, but for smaller plants that do not have or have very little woody parts. These plants tend to sprout every year, and even though they seemingly die in the autumn, their roots are alive, and they emerge and grow again in the spring, sprouting again. That process repeats itself for numerous years.
Answer:
The correct answer will be option C.
Explanation:
Perennials the plants which grow for more than two seasons form the grown parts of the same plant.
The seeds of the plants are not to be sown every year as they sprout from the same part of the plant called root after they die out during winter. After winter the same root again forms the plants like observed in flowering plants of Hibiscus and Daisies.
Thus, option C-sprout every year, year after year is the correct answer.
What happens as electrons move along the chain of molecules known as the electron transport chain?
They gain energy, which causes ATP molecules to lose phosphate groups.
They gain energy, which causes H *ions to join with oxygen to produce water.
They lose energy, which is then used by the cell to make ATP.
They lose energy, which is then used to break down ATP.
Answer:
The correct answer is the third statement.
Explanation:
ETS or electron transport chain is the last stage of aerobic cellular respiration that leads to the formation of a huge amount of adenosine triphosphate also known as ATP which is the energy currency of the cell.
It occurs in the inner mitochondrial membrane. Electrons are passed through various protein complexes present in the inner membrane of mitochondria.
As electrons pass through the electron transport chain, electrons move from a higher to a lower energy level and are ultimately passed to oxygen.
During this process, Energy release in the electron transport chain is trapped as a proton gradient. Due to this concentration gradient, ATP synthase is a final protein complex, forms ATP.
Thus, the correct answer is the third statement.
Which of the following is NOT a piece of evidence of evolution?
what effects would el nino most likely have on organisms?
El Niño would lead to the death of organisms or populations, El Niño would cause organisms to move in search of food and better conditions.
Hello. This question is incomplete. The full question is:
"What effects would el niño most likely have on organisms? check all that apply :
el niño would lead to the extinction of a species. el niño would lead to the death of organisms or populations. el niño would cause changes in the genetic makeup of organisms, el niño would cause continents to move to different parts of the planet. el niño would cause organisms to move in search of food and better conditions."
Answer:
El Niño would lead to the death of organisms or populations. El Niño would cause organisms to move in search of food and better conditions.Explanation:
El Niño is a climatic phenomenon that has many effects on nature. Basically, this phenomenon is characterized by the promotion of trade bliss from the east towards the west. When this occurs, the result is an accumulation of hot water in the upper layer of the Pacific oceans. With the increase in water temperature, evaporation becomes much higher than normal, forming large clouds laden with water vapor in this region, which will result in a strong rainy season.
El niño can affect the fauna of this region in a great way, some examples that can happen are:
El Niño would lead to the death of organisms or populations. El Niño would cause organisms to move in search of food and better conditions.How is anaerobic respiration affect by changes in temperature ?
Based on the conditions of early earth, what conclusions you draw about the amount of anaerobic respiration that was occurring at Earths beginning ?Explain your answer
If there was a sudden drop in the temperature after the evolution of the first living cells,
predict how that might have affected the changes in the atmosphere and the evolution of cyanobacteria and other autotrophs. Explain your answer.
Answer:
The rising temperature will increase the rate of anaerobic respiration, up to a point. Beyond that the heat will start putting a stress on the organismand the rate will go down. More heat will eventually kill the organelles.
Macromolecules that contain carbon , hydrogen and oxygen in a 1:2:1 ratio is called ?
Answer/Explanation: Carbohydrates contain carbon, hydrogen and oxygen atoms with the ratio of hydrogen atoms to oxygen atoms in the ration of 2 hydrogen atoms to 1 oxygen atoms (2H : 10) such as in sucrose or table sugar C12H22011. It is Carbohydrates are a ready source of energy.
Macromolecules that contain carbon, hydrogen and oxygen in a 1:2:1 ratio are called carbohydrates.
Which group of molecules has a ratio of 1 carbon 2 hydrogens 1 oxygen?
Carbohydrates are a group of organic compounds containing a ratio of one carbon atom to two hydrogen atoms to one oxygen atom.
Do all carbohydrates have a 2:1 ratio?Carbohydrates are a class of chemical compounds composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio, respectively.
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why does competiton happen?
A: Different organisms have different needs
B: There are limited resources in an ecosystem
C: There are no predators in an ecosystem
D: Organisms do not need the same resources
(I think it's B but I'm not sure)
which kind of electrical charge is found on a hydrogen atom of a polar water molecule
Answer:
it would have a positive charge.
What is the answer for B?
Answer:
wheres b?
Explanation:
Which three steps describe how an animal obtains and uses energy for growth?
First, an animal eats another organism. Then, food is built into larger molecules. Next, the animal's cells use molecules to
make new cells.
First, food is built into larger molecules. Then, the animal eats another organism. Next, the animal's cells use molecules to
make new cells.
First, an animal eats another organism. Then, food is broken down into smaller molecules. Next, the animal's cells use
molecules to make new cells.
First, food is broken down into smaller molecules. Then, the animal eats another organism. Next, the animal's cells use
molecules to make new cells.
Answer:
Your answer will be : option (C)
First, an animal eats another organism. Then, food is broken down into smaller molecules. Next, the animal’s cells use molecules to make new cells.
Explanation:
Growth can be defined as the increase in the size and change in shape of a developing organism that directly depends upon the increase in the number and size of the cells that makes up an organism.
First, an animal eats another organism. Then, food is broken down into smaller molecules. Next, the animal’s cells use molecules to make new cells are three steps which describes how animals obtains and uses energy for growth because it directly related to the definition of growth in an organism.
Answer:
Explanation:
First an animal eats another organism;
its body digests the nutrients and the mollecules;
the mollecules are used by the body to generate energy to grow
A graph______________.
check all that apply
is a visual representation of any differences or changes among groups
helps the reader understand statistic/results
is a type of statistic
is rarely based on actual data
is just a picture, and does not convey information regarding data
Answer:
your answer is the 1st & 2nd choice.
Explanation:
A graph is meant to illustrate the differences between 2 mediums. It could involve company sales, customer satisfaction between different years of production.
The Graph could be a visual representation of any differences or changes among groups that helps the reader understand statistics/results and sort of statistics.
The correct statement that defines the graph is the visual representation and kind of statistics.
Graph-
A diagram (such as a series of 1 or more points, lines, line segments, curves, or areas) that represents the variation of a variable as compared thereupon of 1 or more other variables.
The definition of a graph may be a diagram showing the relationships between two or more things.
An example of a graph could be a chart (mathematics) A diagram displaying data, particularly one showing the connection between two or more variables; specifically, for a function, the set of all tuples.
Thus, options A and B define the graph that is the visual representation of any differences or changes among groups and a type of statistics.
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In human males, the process of cell division, meiosis occurs in cells of the:
Answer:
testes
Explanation:
In human males, the process of cell division, meiosis occurs in cells of the testes.
The process of Meiosis occurs in the sexual organs of sexually reproducing organisms,
How are organisms in the domains Bacteria and Archaea similar?
A. They are protists.
B. They are ancestors of eukaryotes.
C. They have membrane enclosed organelles.
D. They lack a nucleus.
Answer:
D
Explanation:
they are prokaryotes thus do not have a nucleus and membrane-bound organelles
The organisms in the domains Bacteria and Archaea are similar as they lack a nucleus. Thus, the correct option is D.
What do you mean by Archaea?Archaea may be defined as the unicellular microorganisms that do not have internal membranes but both have a cell wall composed of various polysaccharides and glycoconjugates and use flagella to swim.
Both bacteria and archaea are prokaryotes and do not have a nucleus and well-defined membrane-bound cell organelles.
Therefore, the correct option is D.
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Which term best characterizes the role of corals in a coral reef ecosystem?
O
A. Photosynthetic
B. Parasitic
C. Abiotic
D. Biotic
Answer:
D. Biotic
Explanation:
Biotic best characterizes the role of corals in a coral reef ecosystem.
Which of the following statements is considered true of Neanderthals?
A. They evolved into homo sapiens.
B. They had some system of religious beliefs about afterlife.
C. They had smaller brains than homo sapiens (modern humans).
D. They emerged after the ice age.
Answer: B. They had some system of religious beliefs about afterlife.
Explanation:
Neanderthals are believed to have had some system of religious beliefs because they buried their dead. They did not evolve into modern humans but rather interbred with them and had larger brains compared to Homo sapiens. Neanderthals lived during the ice age, not after, and were well-adapted to cold climates.
Explanation:The correct statement about Neanderthals is that they had some system of religious beliefs about the afterlife. Archaeological evidence, such as burial sites, suggest this could be true as they buried their dead, which may imply a belief in an afterlife. Neanderthals evolved from Homo erectus and did not evolve into Homo sapiens (modern humans), but they did interbreed with them.
Neanderthals had larger brains in absolute terms compared to modern humans, although their brain size is typically considered in proportion to their overall more robust body size. They lived during the ice age, thus they did not emerge after it. Neanderthals, indeed a distinct group from Homo sapiens sapiens, showed a great capacity to adapt to cold climates and had strong, muscular builds suited for survival in harsh conditions.
which of the following is an example of a non Mendelian pattern of inheritance?
a. when individuals with the genotype BB cross all of the offspring have brown fur
b. All traits are inherited through patterns found by Mendel
c. When pea plants that are heterozygous for a certain trait cross same of the offspring express both distinct versions of the trait
d. When snapdragons that are true breeding for white flowers cords with snapdragons that are true breeding for red flowers the offspring produce pink flowers
Answer:
B). All traits are inherited through patterns found by Mendel.
The inheritance pattern in all the traits is observed to follow the Mendelian inheritance pattern. Thus, option B is correct.
What is the Mendelian pattern of inheritance?The Mendelian pattern of inheritance can be described as the phenotypic change in the traits with the cross between the parents.
The non-mendelian pattern is based on crossing over and non-segregation of genes in the offspring.
The separated traits result in the offspring having traits of both the parents in the cross.
In the given statements, the segregation of the genes based on the Mendelian inheritance is observed. Thus, all the traits are inherited by the Mendelian inheritance pattern. Hence, option B is correct.
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What causes upwelling?
Explanation:
Upwelling is a oceanographic phenomenon. It is a process which results in the replacement of warm and nutrient less water with the cold and nutrient enriched water at the surface of oceans, seas, etc. As a result of this process, the surface water rises. The phenomenon behind this process is that the high intensity winds move the cold water from the middle of the ocean or sea towards the surface of the ocean or sea replacing the warm water which was present there. Due to this process, the nutrient enriched water reaches the surface of the oceans and seas.
(Wind) should be your answer
(APEX)
Your home is located in a deep river valley less than a mile from where the river flows into the Gulf of Mexico. A hurricane is growing in the Gulf of Mexico, and warnings have been issued that the storm will touch ground within two days.
Which safety measures should you take?
Go to a shelter farther inland on higher ground.
Stay indoors and close your windows.
Board up your windows and go to your basement.
Open windows and doors to equalize pressure.
Answer: Go to a shelter farther inland on higher ground.
Explanation:
A hurricane is a tropical cyclone in which the air rotates in low pressure. It is an organized thunderstorm which has no fronts (a boundary that separates the two air masses which are of typically of different densities). The speed of the wind in this cyclone is 74 mph.
Go to a shelter farther inland on higher ground. is the correct approach. This is because of the fact that hurricane can cause the flow of water from the river at high tide. Thus it will be suitable that a person attains a shelter to higher grounds to keep itself save.
Answer:
A: go to a shelter farther inland on higher ground.
Explanation:
I did it it’s correct
how many electrons are in outermost energy level of an oxygen atom as it shares electrons with hydrogen atoms as part of a water molecule
Answer:
8 electrons
Explanation:
This gives each hydrogen atom two electrons in its outer energy level, which is full. It also gives oxygen 8 electrons in its outer energy level, which is also full.
Please mark brainliest and have a great day!
hydrogen atom two electrons in its outer energy level, which is full. It also gives oxygen 8 electrons in its outer energy level, which is also full.
Question 8 (5 points)
Radioactive elements comprise a majority of the____
actinides
halogens
lanthanides
noble gases
Radioactive elements comprise a majority of the "ACTINIDES"
These are elements in the bottom row of the periodic table.
Answer: Option A. actinides
Explanation:
Radioactive element is an element whose nucleus degenerate spontaneously due to the emission of alpha and beta particles, or gamma rays.
Radioactive elements are majorly comprise of Actinides.
Actinides also called actinoids, all are radioactive elements and release energy on radioactive decay. Uranium and thorium are naturally occurring whereas plutonium are synthetic actinides which are most abundant actinides on Earth.
Hence, the correct option is A.
why a red blood cell burst when placed in water yet an onion epidermal cell does not?
Answer:
Hope it helps
Explanation:
The oncotic pressure inside the cell will be greater than the pressure outside. Thus causing the cell membrane to rupture. If red blood cells are placed in pure water, water enters into the red blood cells by osmosis and the red blood cells swell up and burst while the onion cells would absorb water due to osmosis, swell and become turgid.The cell sap move conc. than surrounding water gate into the cell by osmosis; the cell swells/becomes turgid; but does not burst due to the cell wall.
What is is called when group of organisms show rapid rate of diversification in their form for a period of time A)adaptive radiation B) extinction C)macroevolution D)speciation
Answer:
B - Extinction.
Explanation:
The organisms are rapidly become diverse from each other, causing the extinction of the original organism.
How can a geological time scale BEST be reconstructed?
A) Comparing vestigial structures in living species .
B) Comparing homologous structures in living species.
C) examining homologous structures in fossil remains.
D) examining the written records of scientist from past structures.
C.
This makes the most sense to me. Studying fossils is how it is usually done. Many things can be told from this.
Answer:
The answer examining homologous structures in fossil remains
Explanation:
It is possible to get an idea of how things change and evolve by comparing how fossils change over time.
An organism’s allele combination is called the
Answer:genotype
Explanation:
Answer:
Genotype
Explanation:
Got it correct on ck12
Liquid water turns into water vapor at which step in the water cycle
Answer:
When water is collected from vapour form to liquid form then this process is known as condensation.
For example, water evaporated from the atmosphere reaches to the clouds and it gets converted into liquid form and again reaches to Earth in the form of rain.
Thus, we can conclude that process in which water vapor turns to liquid is called condensation.
Answer:
Liquid water turns into water vapor when it evaporates, so it fits into the evaporation step in the water cycle.
Which of these genes is not a part of the lac operon
Answer:
Can you show the different genres so I can tell you wich one it is
Explanation:
The correct answer is repressor gene (C).
The gene that is not part of the lac operon is the repressor gene. The lac operon includes structural genes, a promoter, and an operator, while the repressor gene is located upstream and regulates the operon's activity.
The lac operon in E. coli contains three structural genes (lacZ, lacY, and lacA), a promoter, and an operator gene. The repressor gene, however, is not part of the lac operon itself; it is a separate gene located upstream of the operon that produces the repressor protein which binds to the operator region to regulate transcription.
Key Points About the lac Operon:
It consists of three structural genes: lacZ, lacY, and lacA.The promoter and operator regions are essential for the transcription control of these genes.The repressor gene is separate and not part of the lac operon but influences its activity.Complete Question:
Which of these genes is not a part of the lac operon?
A. operator gene
B. promoter gene
C. repressor gene
What might geneticists learn about genes by studying rna.
by studying RNA, geneticists could learn about where genes begin and end on a chromosome. they could also learn about where genes are active in different types of the cells.
By studying RNA, geneticists can learn about gene expression patterns, how changes in RNA can affect these patterns, and gain insights into the complex genetic code that defines each protein sequence. RNA's roles in transcribing DNA and translating it into proteins are also significant areas of understanding.
Explanation:Geneticists can gain a wealth of knowledge about genes by studying RNA, particularly regarding gene expression. RNA stands for ribonucleic acid, a molecule that plays a crucial role in the process of transcribing the genetic instructions inscribed on DNA and translating them into proteins. Each protein sequence is determined by a three-nucleotide sequence in RNA called the triplet codon, effectively forming a genetic code.
By studying RNA, geneticists can discern patterns in gene expression and even predict how changes in specific DNA or RNA sequences could potentially alter this expression. For instance, the Human Immunodeficiency Virus (HIV) is an RNA virus that uses its RNA as a template to create DNA, demonstrating a deviation from the standard genetic flow of information. This highlights the importance of RNA in the realm of genetics and why its study is so vital to understanding the complex interplay of genetic expressions in living organisms.
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Insects, in contrast to chordates, have what feature in their nervous system?
A. Nerve net
B. Ventral nerve cord
C. No brain
D. Dorsal nerve cord
Answer: Ventral nerve cord
Explanation: The nervous system of the insects are very simple that consists of specialized cells.
It contains a network of cells that is used to generate electrical impulse that is circulated throughout the body.
Insects consists of a simple nervous system with a dorsal brain linked to a ventral nerve cord.
Answer:b ventral nerve cord
Explanation: