Answer:
A human body contains 46 chromosomes in pairs of 2
Explanation:
A human body contains 46 chromosomes in pairs of 2
Explanation:
who or what
btw this is 6th grade science and this is not a true or false question
answer:
this is the cell theory, which was proposed by Theodor Schwann in 1839
explanation:
in biology, cell theory is the historic scientific theory it states that living organisms are made up of cells, they are the basic structural/organizational unit of all organisms and all cells come from pre-existing cells.Answer:
This is called cell theory. This was first proposed by Theodor Schwann and became an important part of science today.
In purple people eaters , 2 horns are dominant and no horns is recessive . If a purple people eater is a heterozygote then it has 1 horn . Two heterozygote purple people eaters are about to have a baby . What are the genotypes and phenotypes that their baby could possess ? Show the punnet square
Answer:
Punnet squares are in the image attached
What happens to water (H2O) and carbon dioxide (CO2) during photosynthesis?
Answer:
Carbon dioxide turns into glucose and water turns into oxygen
Explanation:
carbon dioxide is combined wih hydrogen atoms in the presence of ATP molecules to form glucose
water molecules split by sunlight energy to form oxygen gas and hydrogen atoms . the oxygen obtained from water is released by the leaf as a by- product
The process that breaks glucose into smaller parts?
A. Glycolosis
B. Fermentation
C. Cellular respiration
D. Photosynthesis
Answer:
c I do believe good luck with the answer
The earth’s surface stays completely the same over time. It never changes
A)true
B)false
9 facts about the atmosphere
Answer:
#1. Earth Has Had Three Atmospheres.
#2. Oxygen Caused the First Major Extinction
#3. The Sky Should Be Violet
#4. The Atmosphere Extends 6,200 Miles into Space
#5. It Protects Us from Meteors
#6. There are five layers within the atmosphere
#7. The atmosphere surrounds the planet, protecting it by absorbing the ultraviolet radiation from the sun, and regulating the temperature extremes that would otherwise occur between day and night.
#8. The troposphere lies closest to the Earth and is about 11 miles thick
#9. Blood Boils After 60,000 Feet into the atmoshpere
1. Which of the following is true of cell energy?
O A. All organisms do some form of cellular respiration
B. Only some organisms undergo cellular respiration.
C. Since plants use photosynthesis they do not use cellular respiration
O D. Anaerobic respiration creates more energy than aerobic respiration,
Answer:
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HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Nitrogen is a NUTRIENT needed by plants for growth. Nitrogen is naturally cycled into the soil where it is rapidly absorbed by plants. What would a farmer MOST likely do to replenish nitrogen that was depleted from the soil?
A. Use water that is enhanced with phosphates.
B. Add fertilizer to the soil to provide a source of nitrogen.
C. Use genetically altered crops that fix their own nitrogen.
D. Add bacteria to the soil in order for the crop to grow stronger roots.
Answer:
c
Explanation:
add fertilizer to the soil to provide a source of nitrogen.
Answer:
b
Explanation:
Add fertilizer to the soil to provide a source of nitrogen.
When a non-native species is introduced into a new ecosystem, it may thrive because?
Answer:
because their new environment lacks any natural predators or pests.
Explanation:
which part of the dna molecule is considered the genetic code that will be read by the cell? phosphates, Deoxyribose sugars, enzymes, nitrogen bases (A,C,G, and T) Plzz help ASAP
Answer:
A,C,G
Explanation:
I hope I answered this question right
Give an example of the law of conservation of mass.
If ur correct i'll give brainliest.
Answer:
In a chemical reaction mass is neither created nor destroyed
Explanation:
HOPE THIS HELPED
Answer:
The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example when wood burns, the mass of the soots, ashes, and gasses equal the original mass of the charcoal and the oxygen when it first reacted
What holds bones together but is loose enough to allow bones move
Answer:
Tendons connect muscle to bone and move the bones or structures to which they are attached.
Explanation:
Identify and analyze the way fossil fuel combustion has changed the composition of Earth's atmosphere, and the way this change has affected climate.
why do hot springs in Yellowstone national park at wooden walkway built around them
What does a Prokaryotic cell look like?
Answer:
This is what it look like
Explanation:
how does anger, sadness effect heart?
Stress cardiomyopathy can occur in reaction to stressful news, such as a loved one's cancer diagnosis. And strong emotions, such as anger, may cause irregular heart rhythms. Stress can be harmful to your heart, too. If you are under stress, your blood pressure and heart rate go up.
It's affects ones mental health too leading to loss of concentration and irregular eating and sleeping habits
are you okay didi?
Earthquakes and faults form at __________ boundaries.
transform
convergent
divergent
Answer:
transform
Explanation:
Most earthquakes occur at the boundaries where the plates meet. In fact, the locations of earthquakes and the kinds of ruptures they produce help scientists define the plate boundaries. There are three types of plate boundaries: spreading zones, transform faults, and subduction zones.
When is energy production the highest?
Answer:
Answer:Fossil fuels are the largest sources of energy for electricity generation. Natural gas was the largest source—about 38%—of U.S. electricity generation in 2019.
Answer:Fossil fuels are the largest sources of energy for electricity generation. Natural gas was the largest source—about 38%—of U.S. electricity generation in 2019.Explanation:
Answer:Fossil fuels are the largest sources of energy for electricity generation. Natural gas was the largest source—about 38%—of U.S. electricity generation in 2019.Explanation:The United States uses many different energy sources and technologies to generate electricity. The sources and technologies have changed over time, and some are used more than others. The three major categories of energy for electricity generation are fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy sources. Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy. Other major electricity generation technologies include gas turbines, hydro turbines, wind turbines, and solar photovoltaics.
of energy for electricity generation are fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy sources. Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy. Other major electricity generation technologies include gas turbines, hydro turbines, wind turbines, and solar photovoltaics.Fossil fuels are the largest sources of energy for electricity generation
Natural gas was the largest source—about 38%—of U.S. electricity generation in 2019. Natural gas is used in steam turbines and gas turbines to generate electricity.
Natural gas was the largest source—about 38%—of U.S. electricity generation in 2019. Natural gas is used in steam turbines and gas turbines to generate electricity.Coal was the second-largest energy source for U.S. electricity generation in 2019—about 23%. Nearly all coal-fired power plants use steam turbines. A few coal-fired power plants convert coal to gas for use in a gas turbine to generate electricity.
Natural gas was the largest source—about 38%—of U.S. electricity generation in 2019. Natural gas is used in steam turbines and gas turbines to generate electricity.Coal was the second-largest energy source for U.S. electricity generation in 2019—about 23%. Nearly all coal-fired power plants use steam turbines. A few coal-fired power plants convert coal to gas for use in a gas turbine to generate electricity.Petroleum was the source of less than 1% of U.S. electricity generation in 2019. Residual fuel oil and petroleum coke are used in steam turbines. Distillate—or diesel—fuel oil is used in diesel-engine generators. Residual fuel oil and distillates can also be burned in gas turbines.
If you use a microscope to view an unknown cell, what structure should you look for to tell you if it is a eukaryotic cell?
A Cell membrane
B Cytoplasm
C DNA
D) Nucleus
Answer:
If you use a microscope to view an unknown cell, should you look for a nucleus option D.) to tell you if it is a eukaryotic cell
Explanation:
how does overpopulation affect anaerobic respiration?
Answer:
I really don't think over population can affect humans anaerobic respiration
¿Cuál es la cantidad mínima recomendable de ingesta de agua al día para conservar el equilibrio de las funciones del cuerpo humano? *
Answer:
se recomienda tomar un litro de agua por cada 35 kilogramos de peso corporal
Explanation:
El agua es un componente fundamental para llevar a cabo todas las funciones celulares. Algunas de las funciones más importantes que requieren agua son, por ejemplo, la eliminación de desechos (orina y heces), mantenimiento de la temperatura corporal alrededor de 35,5 °C (trasnpiración), protección de órganos internos, lubricación de las articulaciones durante tareas de locomoción (movimiento), etc. Durante la jornada, el organismo pierde grandes cantidades de agua mediante los procesos de respiración, transpiración, en la orina y heces. En consecuencia, la reserva de agua que posee el cuerpo humano debe ser recuperada mediante una ingesta adecuada. La Organización Mundial de la Salud (OMS) recomienda ingerir a diario un litro de agua por cada 35 kilogramos de pesos. Es importante resaltar que estas cantidades pueden variar dependiendo de las características físico/fisiológicas del individuo (por ejemplo, edad, práctica deportiva, etc.), como así también de las características ambientales donde se desarrolla el individuo (por ejemplo, un clima tropical puede aumentar los requerimientos diarios).
Letters A through F on the graph below represent different species that are related but show different structural, functional,
and behavioral adaptations.
Increasing Level
of Complexity
more
Time (millions of years)
One inference that can be drawn from the graph is that
A) speciation may be either gradual or abrupt.
B) speciation occurs only gradually, over long periods of time.
C) species E is the ancestor of species F.
D) species E resulted from the extinction of species A, B, C, and D.
A) speciation may be either gradual or abrupt.
Which of the following is a
character shared by all
members of the species and a
red flower would be one of its
traits?
A. pink flower
B. white flower
C. flower color
Answer:
b
Explanation:
Perennial plants in the genus Asclepias (milkweeds) contain compounds called cardiac glucosides (cardenolides) that can be toxic for animals. Monarch butterfly larvae feed on Asciepias sp. but are not harmed by the cardenolides. Instead these molecules accumulate in the tissues of the caterpillar and are present in the tissues of the adult butterfly. Because of these toxins in their tissues, Monarch butterflies are unpalatable to insectivorous birds. Another species of butterfly, the Viceroy, looks very similar to the Monarch in its bright coloration and distinctive patterning but was thought to lack a toxin. Because Monarch butterflies are toxic it was long thought that the similar appearance of nontoxic Viceroy butterflies was an example of:
Answer:
Batesian mimicry
Explanation:
Batesian mimicry refers to a form of biological resemblance by which a harmless prey species evolved in order to imitate another harmful species for a common predator, thereby increasing its chances of survival. This defensive behavior was described by Henry W. Bates, who made ecological observations of butterflies in the Brazilian rainforest. Thus, an innocuous species that show harmful signals against a predator will gain protection against this predator. Batesian mimicry is a type of mimicry that benefits from the predator's learned avoidance behavior.
When one tectonic plate is forced underneath another plate is broken down in earths mantle
Answer:
gfkgahl zehjwv kncRkkns
Which of the following best describes genes?
a: polymers of peptides used to make proteins
b: nucleotide sequences in dna that code for traits
c: pieces of rna that produce carbohydrates
d: collections of nucleic acids that generate energy
Answer:
b: nucleotide sequences in dna that code for traits
A small crab will make its home inside a mussel, obtaining food and shelter while the mussel simply tolerates the situation. In contrast, a different crab falls victim to an intruder who slowly extracts nutrients from its body by spreading a fungus-like substance throughout its extremities. Which TWO symbiotic relationships are described in the examples?
Commensalism and parasitism
Communism and predation
Competition and mutualism
Competition and symbiosis
What is the main difference between the two parts of protein synthesis?
A. The first builds RNAs and the second builds proteins
B. The first happens in the presence of oxygen and the second is anaerobic
C. The first requires the input of energy from the cell and the second is passive
D. The first take place in the cytoplasm and the second takes place in the nucleus
Answer:
A
Explanation:
transcription creates mRNA, while translation builds proteins
In the process of protein synthesis, the first builds RNAs and the second builds proteins. The correct option is A.
What is protein synthesis?Cells create proteins through a process known as protein synthesis. Transcription and translation take place simultaneously.
The conversion of genetic information from DNA to mRNA in the nucleus is known as transcription. Initiation, elongation, and termination are its three stages.
Creating a polypeptide, or protein consisting of a chain of amino acids, is the sole goal of protein synthesis. Keratin, a protein, is produced in the cells of the hair follicle.
In the first stage, messenger RNA (mRNA) is created. After leaving the nucleus, mRNA moves into the cytoplasm and joins a ribosome.
At this time, the second stage of translation starts, during which a specific protein molecule is created by reading the genetic instructions contained in the mRNA molecule.
Thus, the correct option is A.
For more details regarding protein synthesis, visit:
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What is the correct mRNA transcription of the following DNA sequence? ATGGCACCTTAC
A. UACCGUGGAAUG
B. AUGGCACCUUAC
C. CAUUCCACGGUA
D. CATTCCACGGTA
The process of transcription produces the mRNA sequence from the DNA. The mRNA transcription of ATGGCACCTTAC will be UACCGUGGAAUG. Thus, option A is correct.
What is mRNA transcription?Transcription is the process of the formation of mRNA from the replicated DNA strand of the cell. It produces an mRNA transcript that is a single strand and further codes for amino acids.
The mRNA transcript forms by the base pairing with the DNA template. If the DNA sequence is ATGGCACCTTAC then according to the base pairing rule the adenine (A) pairs with uracil (U) in mRNA, and guanine (G) pairs with cytosine (C). In mRNA, the adenine binds with uracil and not thymine, and hence A pairs with U, whereas the G-C bond remains the same.
The DNA strand: ATGGCACCTTAC
The mRNA sequence will be: UACCGUGGAAUG
Therefore, option A. UACCGUGGAAUG is the mRNA transcript.
Learn more about mRNA transcript here:
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When molecules pass through a cell membrane using special proteins
A. Active transport
B.osmosis
C.diffusion
D. Facilitated diffusion