A single point mutation in the DNA near the lactase gene changes the cytosine (C) nucleotide to a thymine (T). Individuals with the thymine (T) nucleotide are lactose tolerant and can digest the milk products in adulthood.
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Certain mental problems are thought to be caused by not having enough
neurotransmitters. Why would a lack of neurotransmitters cause problems?
A. Neurons would not be able to receive sensory messages.
B. Neurotransmitters send signals from neuron to neuron.
C. Neurons would not be able to grow longer.
D. Neurons would not be able to move to new areas.
Answer:
B. Neurotransmitters send signals from neuron to neuron.
Explanation:
Lack of neurotransmitters may cause problems because neurotransmitters send signals from neuron to neuron.
The lack of neurotransmitters cause problems because neurotransmitters send signals from neuron to neuron. Therefore, option (B) is correct.
A neurotransmitter is a molecule that a neuron secretes to influence another cell at a synapse. Another neuron, a gland or muscle cell, or the target cell, could be the cell that receives the signal.
Your body cannot function without chemical messengers called neurotransmitters. Chemical signals, or "messages," are carried from one neuron (a nerve cell) to the next target cell by them. The following objective cell can be another nerve cell, a muscle cell or an organ.
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Which type of tree ends up dominating many landscapes over time because they will slowly make it harder for other types of trees to grow?
Question 5 options:
Shrubs
Conifer
Deciduous
Grasses
Answer: conifer
Explanation: I took a test with the same question and I got it right but other than that I have no explanation
Answer: conifer
Explanation: i took the quiz and got it right
hope it helps:)
All organisms need energy and
to live, grow, and reproduce. Both of these things cycle
through an ecosystem through its organisms.
sunlight
decomposers
matter
reproduction
Answer:
Sunlight
Explanation:
Create a mutant fly with any number of variations and mate it with a
wild-type fly. How many offspring are wild-type? What are the
phenotypes of the flies that are not wild-type?
Untamed type, a person who exhibits the typical phenotype, which is the phenotype typically present in a population of living things. Mutant, a person who deviates from the typical phenotype in some way.
What are the phenotypes of the flies that are not wild-type?The phenotypic of a species' normal form as it appears in nature is known as the wild type (WT). The wild type was initially thought to result from the “regular” standard allele at a location, as opposed to a non-standard, “mutant” allele.
Type wild, an individual with the typical phenotype, or the phenotype typically present in a population of living things in the wild. Mutant, a person, has a phenotype that is different from the typical phenotype.
Therefore, to characterize a gene in its natural, unaltered (unchanged), non-mutated form. Some cancer types have been linked to mutated (changed) versions of specific genes.
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Do plants produce more oxygen than they need?
Answer:
Photosynthesis uses carbon dioxide to make sugar and produces oxygen as a byproduct. Respiration uses oxygen to release energy from stored sugar and produces carbon dioxide as a byproduct. ... However, if the plants are growing, then over a period of 24 hours they will produce more oxygen than they consume.
1.What is the most variable class of RNA?
2.What is the main function of mRNA?
Answer:
1. mRNA
Explanation:
2. messenger RNA (mRNA) carries the protein blueprint from a cell's DNA to its ribosomes, which are the "machines" that drive protein synthesis.
what not to do when handling acids and bases
Wear protective gear (goggles, long-sleeved clothes, and gloves) when using acids and bases. Do not allow acids or bases to come in contact with skin or eyes. Limit the amount of acids and bases transported for usage around the house. Cap the bottles of acid and base cleaners tightly.
Can anyone help me with my homework
Answer:
1) True
2) True
3) False
4) True
5)True
Which type of tectonic plate interaction forms a mid ocean ridge?
Answer:
Divergent plate
Explanation:
A semi ocean ridge is formed by the interaction of divergent boundaries. Around divergent plate boundaries, as additional sea floor is formed as the Earth's tectonic plates expand outward, half ridges form. Igneous material grows to the ocean bottom when the plates split, resulting in massive basalt volcanic activity.
Plz help ASAP!! No links or files or you’ll be reported.
Answer: Nephrons eliminate glucose and other waste from the body or option C.
ANSWER PLS DONT PUT LINKS
Answer: C!! :)
Explanation:
Explain the causes of the seasons
Answer:
weather
Explanation:
explain reproduction in snail
PLZ HELP!!!
What line up during meiosis metaphase II at the metaphase plate?
O a) Homologous chromosomes
b) Sister chromatids
c) Aster
d) Microtubes
Answer:
B sister chromatids
Explanation:
the haploid number of still duplicated chromosomes align at the metaphase plate. sister chromatids separate, becoming daughter chromosomes that move to the poles.
What 3 ions does a muscle have to be missing to create muscle fatigue?
Answer:
nerves, muscle tissue,
Los hidrocarburos se forman con la Unión de los elementos carbono e hidrógeno hay dos grandes grupos que son:
Answer:
Alcanos, alquenos y alquinos.
Explicación:
Los hidrocarburos se forman con la unión de los elementos carbono e hidrógeno, hay tres grandes grupos de hidrocarburos que son alcanos, alquenos y alquinos. Estos hidrocarburos se dividen en grupos según el tipo de enlace. Los alcanos son los hidrocarburos que contienen enlaces simples entre átomos de carbono, los alquenos tienen un doble enlace entre átomos de carbono, mientras que los alquinos contienen un triple enlace carbono-carbono.
In Respiration, to where is the energy from sugar molecules transferred?
Explanation:
During the process of glycolysis in cellular respiration, glucose is oxidized to carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).
Answer:
its transferred to ATP
Explanation:
during respiration glucose and oxygen is converted into carbon dioxide and water, so the energy is transferrred to ATP
Si usted sitúa un grupo de plantas verdes (que realizan fotosíntesis) dentro de un ambiente rico en CO2 (dióxido de carbono) con el carbono marcado radiactivamente, es decir, puedo seguir el rastro del carbono. ¿En qué moléculas espera encontrar la marca al interior del cuerpo vegetal?
Answer: Esperaría encontrar la marca en el interior de moléculas de glucosa ya que el CO2, ya que se utilizan 6 moléculas de CO2 para sintetizar una molécula de glucosa.
Explanation:
La fotosíntesis es un proceso utilizado por las plantas y otros organismos fotoautótrofos para convertir la energía de la luz en energía química que, a través de la respiración celular, puede utilizarse para llevar a cabo distintas actividades metabólicas. Esta energía química se almacena en moléculas de carbohidratos, como los azúcares, que se sintetizan a partir de dióxido de carbono y agua. También se libera oxígeno como producto de desecho.
La energía de la luz es absorbida por unas proteínas llamadas centros de reacción que contienen pigmentos verdes de clorofila. En las plantas, estas proteínas se encuentran en el interior de unos orgánulos denominados cloroplastos, que son los más abundantes en las células de las hojas, mientras que en las bacterias están incrustadas en la membrana plasmática. En estas reacciones dependientes de la luz, se utiliza una parte de la energía para despojar de electrones a sustancias adecuadas, como el agua, produciendo gas oxígeno. El hidrógeno liberado por la ruptura del agua se utiliza en la creación de otros dos compuestos que sirven como almacenamiento de energía a corto plazo, permitiendo su transferencia para impulsar otras reacciones: estos compuestos son el nicotinamida adenina dinucleótido fosfato reducido (NADPH) y el adenosín trifosfato (ATP), la "moneda energética" de las células.
El almacenamiento de energía a largo plazo en forma de azúcares se produce mediante una secuencia posterior de reacciones independientes de la luz denominada ciclo de Calvin. En el ciclo de Calvin, el dióxido de carbono atmosférico se incorpora a compuestos de carbono orgánico ya existentes, como la ribulosa bifosfato (RuBP). Utilizando el ATP y el NADPH producidos por las reacciones dependientes de la luz, los compuestos resultantes se reducen y se eliminan para formar más carbohidratos, como la glucosa.
Entonces, si el carbono en la molécula de dióxido de carbono (CO2) se encuentra marcada radiactivamente, esperaría encontrar la marca en el interior de moléculas de glucosa ya que el CO2, ya que se utilizan 6 moléculas de CO2 para sintetizar una molécula de glucosa.
1) WHAT IS DRY ICE?
2)WHAT IS HABERS PROCESS?
3)WHICH GAS IS USED TO TAKE OUT BLUE PRINTS?
4)WRITE FULL FORM OF IUPAC.
5)COPPER IS USED TO MAKE ELECTRIC WIRE,WHY?
6)SILVER IS USED FOR MAKING ORNAMENTS BUT NOT IRON,WHY?
7)WHAT IS SEX?
8)WHAT IS VAT?
Answer:
4)WRITE FULL FORM OF IUPAC.
Explanation:
1.Dry ice is the solid form of carbon dioxide. It is used primarily as a cooling agent, but is also used in fog machines at theatres for dramatic effects. Its advantages include lower temperature than that of water ice and not leaving any residue.
2.The Haber process, also called the Haber–Bosch process, is an artificial nitrogen fixation process and is the main industrial procedure for the production of ammonia today. It is named after its inventors, the German chemists Fritz Haber and Carl Bosch, who developed it in the first decade of the 20th century.
3.Ammonia gas
Ammonia gas is used as a developer in diazotype method to make blue prints.
4.The International Union of Pure and Applied Chemistry (IUPAC /ˈaɪjuːpæk, ˈjuː-/) is an international federation of National Adhering Organizations that represents chemists in individual countries.
5. All metals have some amount of resistivity to electrical currents, which is why they require a power source to push the current through. The lower the level of resistivity, the more electrical conductivity a metal has. Copper has low resistivity, and therefore is an excellent conductor.
6.gold and silver are used to make ornaments because in they are the least reactive and do not react with any thing . Gold and silver are ductile (cam be made into thin wires ) and they have a metallic lustre.
7. I am too smalll I am frecking 10 yrs
8. A value-added tax, known in some countries as a goods and services tax, is a type of tax that is assessed incrementally. It is levied on the price of a product or service at each stage of production, distribution, or sale to the end consumer.
Questions:
1) WHAT IS DRY ICE?
2)WHAT IS HABER'S PROCESS?
3)WHICH GAS IS USED TO TAKE OUT BLUE PRINTS?
4)WRITE FULL FORM OF IUPAC.
5)COPPER IS USED TO MAKE ELECTRIC WIRE,WHY?
6)SILVER IS USED FOR MAKING ORNAMENTS BUT NOT IRON,WHY?
7)WHAT IS SEX?
8)WHAT IS VAT?
Answer:
1) Dry ice is solid carbon dioxide (CO₂).
2) The Haber process, also called the Haber–Bosch process
3)Ammonia is used in blueprint developing machines in both forms.
4)The International Union of Pure and Applied Chemistry (IUPAC /ˈaɪjuːpæk, ˈjuː-/) is an international federation of National Adhering Organizations that represents chemists in individual countries.
Headquarters: Research Triangle Park, North ...
Formation: 1919; 102 years ago
President: Christopher M.A. Brett (Portugal)
Membership: ICSU
5)All metals have some amount of resistivity to electrical currents, which is why they require a power source to push the current through.
6)Silver is used to make mirrors, as it is the best reflector of visible light known, although it does tarnish with time. It is also used in dental alloys, solder and brazing alloys, electrical contacts and batteries.
7)Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality.
8)A value-added tax, known in some countries as a goods and services tax, is a type of tax that is assessed incrementally.
Which event came first? The age of reptiles Amphibians leave the water Trilobites are one of the dominant species on Earth Early humans arise on Earth
Answer:
Trilobites are one of the dominant species on Earth
We know it's not D, the age of reptiles was just a "wee" bit before humans, and amphibians came after trilobites.
Answer
F1 development of the ozone layer
S2 sharks and trilobites abundant in oceans
T3 plants and animals colonize land
F4 dominance of reptiles >> dominance of mammals
By adding the tin atoms to copper, it makes the metal harder to
Helpp??
Answer:
Adding tin to copper during melting changes the properties of the metal. The larger tin atoms restrict the movement of the copper atoms, making the material harder.
Explanation:
Please brainliest
Every ____ has a specific _____
• cell membrane
• function
• cell wall
• chloroplast
• mitochondria
• nucleus
• cytoplasm
• organelle
Answer:
Every organelle has a specific function
Why are the phosphorous and sulfur cycles considered to be sedimentary cycles? Use the word reservoir in your answer.
Answer:
The phosphorus cycle: is a sedimentary cycle (unlike carbon, oxygen, and nitrogen),Phosphorus enters the biosphere almost entirely from the soil through absorption by plant roots.
The sulfur cycle is the collection of processes by which sulfur moves between rocks, waterways
Explanation:
Sedimentary cycles are the ones in which the reservoir is the Earth's crust.
Hope this helps!!
The graph represents changes to two jackrabbit populations in two different areas over 15 years.
a. Which of these populations experienced the faster growth rate over the first five years? Explain your answer.
b. Which of these populations probably experienced more births than deaths over the first five years?
c. What is the approximate carrying capacity for each population, as indicated by the graph?
d. At carrying capacity, how would the growth rate of the population in area A compare with the growth rate of the population in area B?
e. Although the two populations started out at the same size, one population grew larger than the other. What are two environmental factors that could have limited the growth of one of these populations?
f. For the population in area A, which part of the chart shows exponential growth and which shows logistic growth?
g. What are two possible changes to environmental factors that could cause the population in area B to experience positive population growth that would allow it to reach the same carrying capacity as the population in area A?
Answer:
B: blue experienced more death than red
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What is the atmosphere?
7. Which type of mass movement occurs rapidly
when a single mass of soil and rock suddenly
slips downhill?
A. creep
B. landslide
C.mudslide
D. slump
Answer:
The most destructive type of mass movement is a landslide, which occurs when rock and soil slide quickly down a steep slope. Some landslides may contain huge masses of rock, while others may contain only a small amount of rock and soil. A mudflow is the rapid movement of a mixture of water, rock, and soil.
Investigate the optimal amount of foliage for the green,
long furred slinquettes' population.
Answer:
k
Explanation:
Take a moment to examine these images of cells and their surrounding membranes. You already know that the cell membrane protects the cell from the external environment and controls what substances enter and exit the cell. As you study the pictures, consider the following questions: Which of the two cells do you think is more efficient at transporting materials through the cell? Why?
Answer:
Where is the pic.........
true or false
almost all cells have a nucleus
Answer:
True
Explanation:
Almost all cells have a nucleus. Haemoglobin is red blood cell but has no nucleus, prokaryotes have plasmid and not a nucleus sooo... Yea
The kind of weathering caused by water freezing in rocks is known as Question 1 options: chemical weathering mechanical weathering root-pry pedalfer
The weathering of rocks that is caused by freezing in rocks and the attendant physical pressure, is called mechanical weathering.
What is weathring?
The term weathering refers to the breakdown of rock. This breakdown of rocks often leads to soli formation. There are many ways in which weathering may occur.
When weathring occurs as a result of freezing in rocks and the attendant physical pressure, this process is called mechanical weathering.
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