Answers
Answer:
A. Carries copies of instructions to make proteins from the DNA to the rest of the cell.
Explanation:
Messenger RNA (mRNA), molecule in cells that carries codes from the DNA in the nucleus to the sites of protein synthesis in the cytoplasm (the ribosomes).
Answer:
Haha jokester and the answer is A
Explanation:
Related Questions
Which of the following is the best way to develop a dichotomous key? A Move from observing the most specific traits that can divide the organisms to the most obvious traits, offering 2 choices each time. B Move from observing the most obvious traits that can divide the organisms to the most specific traits, offering 2 choices each time. C Move from observing the most obvious traits that can divide the organisms to the most specific traits, offering 4 choices each time. D Move from observing the most specific traits that can divide the organisms to the most obvious traits, offering 4 choices each time.
Answers
Answer:
Move from observing the most specific traits that can divide the organisms to the most obvious traits, offering 2 choices each time
Explanation:
dichotomous key reffers to a tool that give room to the user in determining the identity of items in the natural world. Items can be mammals, fish,wildflowers, mammals and reptiles. The particular key is made up of series of choices that help user to get the name of a particular item correctly. At the end dichotomous keys always bring about two choices in a step.
In dichotomous key the user has to select a choice out which of the two statements that describes the unknown organism best, with the reference of the choice made based of moves to the next set of statements, so at the end the identity of the unknown is clarified.
Therefore, in dichotomous key it move from observing the most specific traits that can divide the organisms to the most obvious traits, offering 2 choices each time
The optimal development of a dichotomous key requires starting with general traits and progressing to specific ones, making two choices available at each step.
Explanation:The best way to develop a dichotomous key is to move from observing the most obvious traits that can divide the organisms to the most specific traits, offering 2 choices each time. This approach aligns with the principle of maximum parsimony, which suggests selecting the pathway with the fewest major events. By beginning with the most general traits, the dichotomous key can effectively narrow down to more specific characteristics, resulting in a logical and systematic classification or identification of species.
The best way to develop a dichotomous key is to move from observing the most obvious traits that can divide the organisms to the most specific traits, offering 2 choices each time. This approach allows for a systematic and logical progression in identifying and classifying organisms based on their traits. By starting with the most obvious traits, it helps narrow down the options and makes the key more user-friendly.
what is the role of the central nervous system
Answers
Answer:
central nervous controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.
Explanation:
.
What is unique about a simulation that is not necessarily true about all models?
Answers
Answer:
Explanation:
Simulation is imitating a process. It is doing exactly like a system will do. It can be used in technologies, education, health, training,
safety engineering. Simulation can be used when the original or exact system is not in place, or cannot be accessed.
A model is a process that helps to understands a system. A model is like an example to follow in achieving a result. A model may not be followed judiciously such that you may require an aspect of the model and then use but not necessarily all attributes while a simulation does exactly what the system does.
Use the food web shown to answer the questions below. Each answer will be a number, not the name of the organism. If the questions are answered correctly, the numbers of each answer will reveal a 5-digit code ..
1. Which organism feeds on the largest variety of organisms?
2. Which organism is an omnivore?
3. Other than bees, which organism does the blue lizard obtain energy from ?
4. Which organism feeds on both rabbits and mice?
5. Which organism is a predator of mice and the prey of a red-tailed hawk?
Answers
Answer:
1. 7, the hawk eats the largest variety of organisms. We know this because the hawk has the most arrows pointing TOWARDS it.
2. 8, the mouse is an omnivore. It eats both plants (grass) and animals (caterpillars).
3. 2, the caterpillar.
4. 9, the bobcat.
5. 1, the snake.
Answer:
Not sure but the lizard is probably an omnivore
Explanation:
What type of cell is created when a sperm fuses with an egg?
Answers
Answer:
Zygote
Explanation:
the blood veins is
a.leaving the lungs.
b.moving in a single file
c.traveling to the heart.
Answers
C .-.
Identify the consumers in the food chain.
Letter __ represents the primary consumer.
Letter __ represents the tertiary consumer.
Answers
Answer:
b and d
Explanation:
In the food chain, consumers are organisms that feed on other organisms. Primary consumers, like rabbits, eat producers such as plants whereas tertiary consumers, such as eagles, eat secondary consumers. The letters assigned to these consumers would depend on their placement in an example food chain.
In a food chain, consumers are organisms that eat other organisms. The primary consumer is at the second level of the food chain, and they predominantly eat producers, such as plants and algae. For example, rabbits eating grass. Corresponding to the letters, if grass is represented by a letter A and rabbits by B, then letter B would represent the primary consumer. The tertiary consumer is usually at the fourth level of the food chain, they are typically carnivores that eat secondary consumers. For instance, if we have snakes that eat rabbits and eagles that eat snakes, the eagle would be the tertiary consumer. Hence, if eagles are represented by the letter D, then that letter D would represent the tertiary consumer.
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Why does an owl need a gizzard?
Answers
Answer:
don’t even know
Explanation:
Answer:
The gizzard is an owl's second stomach. There are no digestive glands in the gizzard, and in birds of prey, it serves as a filter, holding back undigestible items such as bones, fur, teeth, and feathers. Some birds eat grit or small stones to aid with digestion.
Explanation:
The gizzard is an owl's second stomach. There are no digestive glands in the gizzard, and in birds of prey, it serves as a filter, holding back undigestible items such as bones, fur, teeth, and feathers. Some birds eat grit or small stones to aid with digestion.
What happens when an object has an equal amount of positive and negative charges?
Answers
Answer:
The object is considered to be neutral
Explanation:
DNA:
A. Encodes then information needed for making proteins within the cell
B. Directs RNA to make lipids that are needed by the cel
C. Produces carbohydrates
Answers
(PLASE HURRY)Which phrase describes estuaries? are made of fresh water only / are areas where rivers flow into lakes/ are homes to unique plants and animals/ are places where all of Virginia’s water drains
Answers
Final answer:
Estuaries are biomes where fresh water from rivers meets the ocean, resulting in brackish water that is home to unique plants and animals, with salinity influencing the organisms' adaptations.
Explanation:
The phrase that best describes estuaries is that they are homes to unique plants and animals. Estuaries are biomes where a river meets the ocean, creating an area where both fresh water and salt water mix, resulting in brackish water. This environment forms protected areas that are crucial for the life cycles of many organisms, including the spawning and development of young sea creatures like crustaceans, mollusks, and fish. The salinity in estuaries is a significant factor that influences both the types of organisms found there and their adaptations to the changing environment. High and low tides bring about changes in the salt water content of estuaries, contributing to their unique biodiversity.
In humans, the protein CFTR regulates the components of sweat, digestive fluids, and mucus. Humans can have a normal form of the gene or a mutated form. Which of the following would provide evidence that the mutated form of the CFTR protein is harmful to humans?
A. Both the normal and the mutated form of the CFTR gene can be found in healthy humans.
B. Healthy individuals, with the normal form of the CFTR gene, can pass on a mutated form.
C. Most illnesses have symptoms associated with sweat, digestive fluids, and mucus.
D. Individuals who inherit the mutated form of the gene usually develop serious health problems.
Answers
Answer: I think it’s b
Correct me if I am wrong
In humans, the protein CFTR regulates the components of sweat, digestive fluid and mucus. Humans normally have a normal form of CFTR protein.
Mutated form of CFTR protein is harmful. Individuals who inherit the mutated form of the gene usually develop serious health problems.
About CFTR proteinThe cystic fibrosis transmembrane conductance regulator (CFTR) protein is an ion channel protein.
CFTR regulates balance of sodium chloride and water in body surfaces like lungs.
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5. What is the best-known feature of sedimentary
rocks?
Answers
Bedding. Bedding is often the most obvious feature of a sedimentary rock and consists of lines called bedding planes, which mark the boundaries of different layers of sediment. Most sediments were deposited along a flat surface that was roughly parallel with the depositional surface.
Explain why the father determines the sex of the child:
Answers
Answer:
the father's the one because he's the only one with the y chromosome hence if the sperm containing the y chromosome fertilises the ovum then the kid is a boy and if its the one with the x chromosome then its a girl
Answer:
In the XY sex-determination system, the female-provided ovum contributes an X chromosome and the male-provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively. Hormone levels in the male parent affect the sex ratio of sperm in humans.
Explanation:
Hope this helps!!!!
Forever friend and helper,
Cammie:)
Explain, in complete sentences, how hybrid cars help each of the following problems.
1. Most conventional(regular)cars don’t get great gas mileage.
2. Electric car batteries need to be recharged constantly.
3. Conventional (regular) cars burn gas even when stopped
at a red light.
This is about hybrid cars please answer these 3 questions 29 POINTS!!
Answers
Final answer:
Hybrid cars help improve gas mileage, eliminate the constant need for battery recharging, and reduce fuel consumption when stopped at a red light.
Explanation:
Hybrid cars help each of the following problems in the following ways:
Most conventional cars don't get great gas mileage: Hybrid cars have better fuel economy compared to conventional cars, especially in stop-and-go traffic. They achieve this by using an electric motor and a small internal combustion engine coupled to a generator, which charges the onboard battery. Additionally, hybrid cars can utilize regenerative braking to generate electricity during braking, further improving fuel efficiency.
Electric car batteries need to be recharged constantly: Hybrid cars overcome the limited range of electric cars by using a small internal combustion engine to drive the electric motors and recharge the battery when needed. This eliminates the need for constant recharging and allows hybrid cars to travel longer distances without relying solely on electricity.
Conventional cars burn gas even when stopped at a red light: Hybrid cars have a feature called auto stop-start, which automatically shuts off the internal combustion engine when the vehicle is stopped or coasting. This helps save fuel and reduces emissions because the engine is not burning gas unnecessarily while idling.
The following steps describe how sedimentary rock forms at the bottom of a river. Which two steps involve erosion?
1. A large rock breaks down into sediment.
2. The water transports and deposits the sediments.
3. The water also transports calcite and clay, which glue the sediments together.
4. The upper layers of deposits put pressure on the lower layers.
5. Rock forms as the layers of sediment and glue compact and cement together.
Answers
A large rock breaks down into sediment (Erosion), The water transports and deposits the sediments (Erosion)
What is sediment?Sediment is a general term that refers to any material which is present in a loose, unconsolidated form and is made up of particles of rock or mineral fragments. It is typically found in rivers, lakes, seas, and oceans, and can range from silt and sand, to gravel and pebbles, clay, and even organic material like bones and shells. Sediment can be created by weathering, erosion, and transport of materials from their source. It can also form through chemical precipitation and biogenic processes. Sediment is important in the environment as it helps to protect the aquatic species by providing a safe habitat, and it is also used as a reservoir for nutrients that can be used by other organisms.
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Final answer:
The two steps that involve erosion are when 1. A large rock breaks down into sediment and when 2. The water transports and deposits the sediments. Erosion encompasses both the breakdown and transportation processes.
Explanation:
The two steps that involve erosion in the formation of sedimentary rock at the bottom of a river are:
A large rock breaks down into sediment. This is the initial stage where physical or chemical weathering breaks down the rock into smaller particles.The water transports and deposits the sediments. During transportation, the particles are eroded further as they are carried by the water flow to new locations where they will eventually be deposited.Erosion is essentially the process where materials are broken down and then transported from their original location. Sediments transported by water, wind, or glacial ice are examples of erosion at work, whereas deposition occurs when these sediments are laid down in new environments, such as the bottom of a river.
what is a vertabrate
Answers
Answer: an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
Explanation:
Answer:
my back! JK
Explanation:
a creature of an enormous gathering recognized by the ownership of a spine or spinal section, including warm blooded creatures, fowls, reptiles, creatures of land and water, and fishes.
mouth, pharynx, esophagus, stomach, _______
Answers
Answer:
mouth, pharynx, esophagus, stomach, Small Intestine.
Large Intestine.
Rectum.
Accessory digestive organs: liver, gallbladder, pancreas.
Thylacosmilus is a marsupial, and Smilodon is a mammal. Thylacosmilus and Smilodon both have saber teeth, but they do not share an ancestor that had saber teeth. What are saber teeth for these organisms?
A.analogous structures
B .homologous structures
C.vestigial structures
D.mutated structures
Answers
Answer:
Analogous structures
Explanation:
Analogous structures are characters that derived separately in two different species to achieve the same function. If the Thylacosmilus and Smilodon don't share an ancestor then saber teeth must be analogous
Answer:
The answer is A
Explanation:
What are the Different stages of stars life cycle
Answers
Answer:
The stages of most stars life in order are: A Protostar, Main Sequence, Red Giant B Protostar, Main Sequence, Red Dwarf C Main Sequence, Red Dwarf, Protostar D Red Giant, Main Sequence, Protostar E Nebula, Protostar, Red Dwarf. 2 What does a protostar have to do to become a star? A Nuclear fusion in its core. B Nuclear fission in its core.
B = Brown eyes, b = blue eyes. Cross two heterozygous individuals. Give genotypic and phenotypic ratios. Assume dominant/recessive alleles.
Genotypic ratio: ___________:______________:______________
Phenotypic ratio: ___________:______________:______________
Answers
Phenotypic ratio- 3 brown: 1 blue
Final answer:
Crossing two heterozygous individuals for brown and blue eyes yields a genotypic ratio of 1 BB:2 Bb:1 bb and a phenotypic ratio of 3 brown-eyed to 1 blue-eyed offspring.
Explanation:
When crossing two heterozygous individuals for eye color where B represents the dominant allele for brown eyes and b represents the recessive allele for blue eyes, the genotypic ratio is derived from the possible combinations of these alleles. A Punnett square for a heterozygous cross (Bb x Bb) will produce the following genotypes: BB, Bb, Bb, and bb. This results in a genotypic ratio of 1:2:1 (1 BB:2 Bb:1 bb). The phenotypic ratio, which looks at observable traits, will be 3:1 since the dominant brown eye allele will mask the blue eye allele in heterozygous individuals. Therefore, we will get 3 brown-eyed (BB or Bb) to 1 blue-eyed (bb) individuals.
which statement best explains how air pollution from fossil fuels affects a marine environment
Answers
Answer:
Carbon dioxide from the burning of fossil fuels accumulates in the atmosphere, where it causes global warming. But it also affects our oceans. As carbon dioxide enters the ocean, it reacts with sea water to form carbonic acid. ... Changes in ocean acidity are undeniably linked to human activities.
Explanation:
Emily is developing a computer model of protist populations in certain areas of the ocean, and how they help maintain homeostasis in ecosystems. Photosynthetic protists play essential roles in the environment, especially in oceans and lakes. If a hypothetical catastrophic event drastically reduced the population of zooxanthellae, a photosynthetic protist with a specific habitat, which statement describes the most likely result?
Answers
A drastic reduction in the population of the photosynthetic protist zooxanthellae would likely lead to severe disruptions to the ecosystem, including coral bleaching, decreased biodiversity, and a reduction in the quantity of photosynthesis, which would directly affect food chains.
Explanation:If a hypothetical catastrophic event drastically reduced the population of zooxanthellae, a photosynthetic protist, the most likely result would be a major disruption to its specific ecosystem. Zooxanthellae are symbiotic with coral polyps, providing them with essential nutrients derived from photosynthesis. In return, the coral provides the protist with a protected environment and the compounds necessary for photosynthesis. This symbiosis is particularly critical in nutrient-poor oceanic environments, with zooxanthellae enabling corals to secrete the calcium carbonate skeletons that form reefs.
Consequently, a major population reduction of zooxanthellae could lead to a phenomenon known as coral bleaching, where corals lose their algal pigments and eventually die. This loss would have significant implications for the entire reef ecosystem. Coral reefs, for example, provide shelter and food to a wide variety of marine organisms; therefore, their destruction would negatively impact biodiversity and the stability of oceanic ecosystems.
Moreover, since photosynthetic protists like zooxanthellae are important primary producers, their drastic reduction could significantly diminish the amount of photosynthesis in oceanic ecosystems. This effect on photosynthesis would mean less carbon fixation, which could impact food chains and the availability of organic molecules necessary for life, especially for those species that directly consume protists.
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How does granite relate to continental crust?
All granite can only be found in really old continental crust.
All continental crust is made of granite.
Granite cannot be found oceanic crust.
Granite can be mined in continental crust.
Answers
Answer: All continental crust is made of granite.
Explanation:
The earth consists of multiple layers and the lighter particles are found on the upper surface and the heavier particles tend to settle in the base of the earth.
The continental crust is layer of earth which is composed of igneous, metamorphic and sedimentary rocks they usually forms the continents and the areas of the shallow seabed.
This area is base and usually consists of the heavier particles which is usually made of granite. It also contains volcanic lava and rock called basalt. Basalt and granite are heavier particles so they make continental crust.
Which maps is an example of a Mercator projection?
Answers
Answer:
1st option
Explanation: just finished it
Question 28 (1 point)
Which of the following is not a metric measure of volume?
O centimeters cubed
ograms
liters
amount of water in a baby bottle
Previous Page
Next Page
Answers
Final answer:
The option that is not a metric measure of volume is 'ograms,' as it is not a valid metric system unit. Centimeters cubed and liters are both metric measures of volume.
Explanation:
The student asks which of the following is not a metric measure of volume. The options given are centimeters cubed, ogams, liters, and the amount of water in a baby bottle. The metric measures of volume typically include units like liters, milliliters (mL), and cubic centimeters (cm³). These units are part of the International System of Units (SI units) used for volume measurements.
The correct answer is 'ograms' as this is not a valid measure of volume in the metric system. The option 'amount of water in a baby bottle' could refer to a metric volume if measured in liters or milliliters. Centimeters cubed (cm³) and liters are both standard metric units of volume. A milliliter is equivalent to one cubic centimeter, and thus these measurements can be used interchangeably for liquid volumes.
Your initial population has 40 rabbits. Five are born and and three die. Four immigrate into the population and two emigrate out. What is the change in population?
Answers
To calculate the change in the rabbit population, the births and immigrants are added, and the deaths and emigrants are subtracted, resulting in an increase of 4 rabbits.
Explanation:We can calculate the change in population of rabbits by considering births, deaths, immigration, and emigration. The initial population has 40 rabbits. Five rabbits are born, and three rabbits die. Additionally, four rabbits immigrate to and two emigrate from the population. So, the change in population is the sum of the births and immigrants minus the deaths and emigrants.
To calculate the population change: (5 births + 4 immigrants) - (3 deaths + 2 emigrants) = 9 - 5 = 4.
Therefore, the population has increased by 4 rabbits.
Final answer:
The change in rabbit population is an increase of 4 rabbits, after accounting for births, deaths, immigration, and emigration.
Explanation:
To calculate the change in population of rabbits, you need to account for births, deaths, immigration, and emigration.
Initial population: 40 rabbits
Births: +5 rabbits
Deaths: -3 rabbits
Immigration: +4 rabbits
Emigration: -2 rabbits
Now, let's calculate the change:
Add the number of births and immigration: 5 + 4 = 9 rabbits
Subtract the number of deaths and emigration: 3 + 2 = 5 rabbits
Calculate the net change: 9 rabbits (added) - 5 rabbits (removed) = 4 rabbits
The population change is an increase of 4 rabbits.
what organelle is found in the plant cells. the function of the organelle is to collect solar energy and use this to produce food, or glucose, for the plant.
Answers
Answer:
~chloroplasts~
Explanation:
Answer:
chloroplasts
Explanation:
Chloroplasts are organelles that conduct photosynthesis in plant cells, where the photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in the energy-storage molecules ATP and NADPH while freeing oxygen from water in plant and algal cells.
The majority of people in United States work in the___industry A agriculture B fishing C mining D service
Answers
Answer:
D. service
Explanation:
Most people in the US work in jobs that require providing a service to others, whether it's at a restaurant, a department store, a school, etc. Yet, those who work in specialised jobs like agriculture, fishing, and mining are more rare because they need to live in a certain area that is optimal for such positions.
Thus, the answer is D.
Answer:
D service
Explanation:
In terms of jobs, the most popular sector in America is service sector. These include accountants, teachers, etc.
Birds are endotherms. Which statement accurately describes what this means? Birds feed and protect their young after they hatch. Birds have two different types of feathers. Birds can maintain a consistent body temperature. Birds have internal fertilization and lay eggs.
Answers
Answer:
c
Explanation:
Birds are endotherms, so the statement accurately describes that birds can maintain a consistent body temperature, which is the third option, as endotherms maintain a consistent body temperature.
What is the significance of the bird being endothermic?Birds are endothermic, which means they can maintain their body temperature without being affected by the external effects of the climate, and as they require a large amount of energy for flying, this allows them to generate the necessary heat to power their flight muscles. Maintaining a constant internal body temperature is necessary for many physiological processes such as digestion, respiration, hemostasis, etc.
Hence, birds are endotherms, so the statement accurately describes that birds can maintain a consistent body temperature, which is the third option, as endotherms maintain a consistent body temperature.
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