Compared to cnidarians, bilaterally symmetrical animals have _____ nervous systems.
Answers
Compared to cnidarians, bilaterally symmetrical animals have a central nervous system.
What do bilaterally symmetrical animals have?• Bilaterally symmetrical animals have "heads" and "tails" (front and back), front and rear (back and abdomen), and left and right sides. All true animals are bilaterally symmetrical, except those with radial symmetry. The
• longitudinal nerve cords, usually in 3-5 pairs, extend posteriorly from the brain. They are connected by transverse commissures, with smaller lateral nerves extending from the cords. The peripheral plexus arises from the lateral nerve.
Do bilaterally symmetrical animals have diffuse neural networks?Neural networks consist of interconnected neurons that lack brains or some form of cephalization. Organisms with bilateral symmetry are usually associated with neuronal compression and, in a more advanced form, with the central nervous system, whereas organisms with radial symmetry are associated with neural networks.
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Related Questions
A blue whale is about 25 m long and Earth’s circumference is about 3 × 107 km. How many blue whales would need to lie nose to tail to encircle the Earth?
1.3 × 10^9
75 × 10^10
75 × 10^7
1.3 × 10^6
Answers
A blue whale is about 25 m long and Earth’s circumference is about 3 × 10⁷ km , then 1.3 × 10⁹ blue whales would need to lie nose to tail to encircle the Earth ,therefore the correct answer is option A .
What is a unit of measurement?A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.
As given in the problem a blue whale is about 25 m long and Earth’s circumference is about 3 × 10⁷ km.
Thus ,if a blue whale is about 25 m long and Earth’s circumference is about 3 × 10⁷ km , then 1.3 × 10⁹ blue whales would need to lie nose to tail to encircle the Earth ,therefore the correct answer is option A .
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Mistletoe is a green plant that can make its own food, but also derives food from the mesquite tree on which it lives. In this way mistletoe is able to steal water and valuable minerals from the tree. 1. What is the advantage and disadvantage of this relationship to each organism? 2. What would happen to the mistletoe population if mesquite trees increase in number? 3. What type of symbiosis is this?
Answers
Answer:
1. Mistletoe is parasitic to the mesquite tree, it steals from the tree without giving anything valuable back to it. In this case, only the mistletoe gains an advantage.
2. If the mistletoe population on the tree were to increase, the mistletoe would probably end up slowly killing the tree. I say this because its a parasite to the tree. Its constantly stealing water and valuable minerals that it needs and doesnt give back anything that could help the tree. With all the water and minerals being stolen and an uneven rate with no way for the tree to replenish it all quickly enough it'll die.
3. Its parasitic since the mistletoe just takes and takes harmfully
Mistletoe plant is a parasite on the mesquite tree as it takes all the valuable minerals and water from the plant and does not give anything valuable in return to the mesquite tree.
What is Mistletoe plant?
Mistletoe plant is a parasite on the mesquite tree, it steals water from the tree without giving anything valuable back to it. In this case, only the mistletoe gains an advantage.
If the mistletoe population were to increase on the tree, the mistletoe plant would probably end up killing the mesquite tree. This is because it is a parasite to the tree. It is constantly stealing water and valuable minerals from the tree which it needs and doesn't give back anything valuable that could help the tree.
It is a parasite plant since the mistletoe plant just takes all the valuable minerals and water from the tree and thus is harmful.
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What would be the expected hair ancestry link for someone from: central and eastern Asia and most Native Americans.
a. african
b. asian
c. european
Answers
The expected hair ancestry link for someone from central and eastern Asia and most Native Americans would be Asian. So, option B is accurate.
Central and eastern Asia and Native American populations share a common genetic ancestry that can be traced back to Asia. This is supported by various genetic studies that have found similarities in the genetic markers and haplogroups present in these populations. One of the physical characteristics that can be observed is hair type, which is generally straight, dark, and coarse in both central and eastern Asians as well as Native Americans. These similarities in hair characteristics further support the ancestral link between these populations and their shared Asian heritage. While it is important to recognize the diversity within and among populations, the broader ancestral association for hair characteristics in this case points to an Asian ancestry link rather than African or European.
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3. State two ways in which the nucleus of the gamete differs from the nucleus of the cheek cell
(2 marks)
1
Type your answer here
2 Type your answer here
Answers
Answer:
It should be both cells
rhizobium bacteria is found in ___ molecules of_____ plants
Answers
Answer:
Hope this helps :)
Rhizobia are a "group of soil bacteria that infect the roots of legumes to form root nodules". Rhizobia are found in the soil and after infection, produce nodules in the legume where they fix nitrogen gas (N2) from the atmosphere turning it into a more readily useful form of nitrogen.
Explanation:
Answer:
Rhizobium bacteria is found in Roots molecules of Leguminous plants.
Hope it helps.Please me as Brainliest ^-^
Explanation:
Which outcome results when a liquid is heated?
Answers
Answer:A given liquid will evaporate more quickly when it is heated. This is because the heating process results in a greater fraction of the liquid's molecules having the necessary kinetic energy to escape the surface of the liquid.
Explanation:90
Answer:
Evaporation is the results when a liquid is heated. The kinetic energy of the liquid increases.
Explanation:
Brainliest pls! :)
What are 3 positives about designer babies?
Answers
Answer:
Top 10 Pros of Creating Designer Babies-
Parents can choose favorable characteristics. ...
The sex of the baby can be chosen. ...
Help prevent common and (even) rare genetic diseases. ...
Help prevent disorders associated with the mitochondria. ...
Aid in the lowering of the risks of diseases in future generations.
Pick 3,i wrote more!
Answer:
Parents can choose favorable characteristics: Genetic engineering technology offers a wide variety of choices for parents. The option to bear a child has long been established, but more modern innovations in the field open the chance to choose or eliminate specific characteristics and traits. Parents can “design” the features of their child such as skin color, facial attributes, height, and even intelligence (almost like picking items from the supermarket shelves into the shopping cart!).
The sex of the baby can be chosen: Along with the choice for desirable characteristics, the sex of the child can also be selected. About this, there are already previously available procedures to choose the child’s sex. To name a few, these include IVF and artificial insemination.
Help prevent common and (even) rare genetic diseases: With the alteration of an individual’s genome, inheritable diseases and disorders can be prevented from being passed on to future generations. Some of these disorders include Down syndrome, Alzheimer’s disease, Huntington’s disease, and spinal muscular dystrophy.
Explanation:
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Often, smaller objects orbit around the above objects. What are they called (two answers)?
Answers
The smaller objects that orbit around larger objects are called "satellites" or "moons".
The Moon orbiting the Earth is an example of a natural satellite. Artificial satellites include the numerous man-made satellites that circle the Earth. Moons, on the other hand, are planetary or minor planet-orbiting natural satellites.
For instance, Jupiter has dozens of moons, including the four biggest ones known as the Galilean moons: Io, Europa, Ganymede, and Callisto, while Mars has just two tiny moons, Phobos and Deimos.
Satellites can be either natural (like the Moon) or artificial (like the International Space Station), and they play important roles in fields such as astronomy, space exploration, and communication.
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sometimes, distinguishing the type of interaction between species in not straightforward. remoras are fish that are often found attached to larger animals, such as sharks. the relationship between remoras and sharks is often described as a commensalism. although this suggests that sharks do not benefit from this relationship, remoras sometimes consume parasites on their skin. which of the statements below best supports the relationship being a commensalism? (3 points)
Answers
One species benefits while the other is unaffected, which is the best way to characterize a commensal symbiotic interaction between two species.
What does a commensalism relationship look like in practice?Without suffering any serious effects from the bird, the tree offers the bird protection and refuge. The cattle egrets, which are birds, that eat the insects that the feeding cattle churn up are another classic example.
What adjective best captures the relationship between two species in a commensal symbiosis?In commensalism, two species engage in a protracted relationship that is advantageous to one and neutral toward the other (+/0 interaction).
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The membrane potential in an undisturbed cell is called its.
Answers
Answer:
Resting membrane potential
Biology 9th grade need help asap please
The sides or backbone of DNA is made up of what two molecules? (green in the diagram below)
Multiple choice answers
-Sugar-Nitrogen Base
-Sugar-Phosphate
-Phosphate-Nitrogen Base
-All sugar molecules
Answers
Answer: A sugar-phosphate backbone (alternating grey-dark grey) joins together nucleotides in a DNA sequence. The sugar-phosphate backbone forms the structural framework of nucleic acids, including DNA and RNA. This backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.
Explanation:
Answe
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Explantion hehehehehehheheheh
A population of beetles is currently 60 beetles at n=0. The beetle population has an intrinsic growth rate of 150% each generation. The environment can sustain a maximum population of 130 beetles. Find the population of the next three generations, 'y_1' ' 'y_2' and 'y_3' of beetles
Answers
The population of beetles in the next three generations, considering the carrying capacity, is y1 = 130 beetles, y2 = 130 beetles, and y3 = 130 beetles.
The population of beetles can be calculated using the formula: y = y0 * (1 + r)^n, where y is the population at a given generation, y0 is the initial population, r is the intrinsic growth rate (expressed as a decimal), and n is the number of generations.
Given that the initial population (y0) is 60 beetles and the intrinsic growth rate (r) is 150% (or 1.5), we can calculate the population for the next three generations.
For the first generation (y1), we substitute y0 = 60, r = 1.5, and n = 1 into the formula: y1 = 60 * (1 + 1.5)^1 = 60 * 2.5 = 150 beetles.
For the second generation (y2), we substitute y0 = 60, r = 1.5, and n = 2 into the formula: y2 = 60 * (1 + 1.5)^2 = 60 * 6.25 = 375 beetles.
For the third generation (y3), we substitute y0 = 60, r = 1.5, and n = 3 into the formula: y3 = 60 * (1 + 1.5)^3 = 60 * 15.625 = 937.5 beetles.
However, since the environment can only sustain a maximum population of 130 beetles, we need to consider the carrying capacity.
To find the population at each generation while considering the carrying capacity, we compare the calculated population with the carrying capacity and use the smaller value as the population.
For y1, the population is 150 beetles, which exceeds the carrying capacity of 130 beetles. Therefore, y1 = 130 beetles.
For y2, the calculated population is 375 beetles, which is also above the carrying capacity. Thus, y2 = 130 beetles.
For y3, the calculated population is 937.5 beetles, which is still above the carrying capacity. Therefore, y3 = 130 beetles.
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which plant hormone is known as the stress hormone?
Answers
Answer:
Abscisic acid is the plant hormone which s known as the stress hormone.
Which of the following outcomes would be most likely if the membrane of a cell were no longer selectively permeable?
a. A cell wall would form outside the membrane to protect the contents of the cell.
b. The cell would die as it would not be able to regulate which substances could enter and leave.
c. The cell would grow as more nutrients would be able to easily enter the cell.
d.Harmful substances would be able to enter the cell and cause mutations to the cell's DNA.
Answers
Answer:
(d) is the answer of your question.
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Neurospora is an ideal organism to study the effects of genetic mutations because of several reasons. What is one of these
Answers
Answer:
Due simple growth.
Explanation:
Neurospora is an ideal organism to study the effects of genetic mutations because it is easier to growth and are simple. Neurospora crassa is used as a model organism because it has a haploid life cycle and easier to grow that makes genetic analysis simple. Analysis of genetic recombination is facilitated by the ordered arrangement of the products of meiosis in Neurospora ascospores so due to simple growth and haploid life cycle we can considered Neurospora is an ideal organism.
In which organelle does photosynthesis take place?
A:chloroplast
B:vascular bundle
C:mitochondrion
D:stoma
Answers
Answer: Chloroplast
Explanation:
Chloroplast
What can be done to save our oceans?
Answers
Answer:
Explanation:
2. Reduce Pollutants
3. Reduce Waste
4. Shop wisely
5. Reduce Vehicle Pollution
6. Use Less Energy
7. Fish Responsibly
8. Practice Safe Boating
9. Respect Habitat
10. Volunteer
The end products of digestion of carbohydrates are ________
Answers
Answer:
glucose, fructose and/or galactose
what is the function of the mouth in the digestive system
Answers
A farmer stops cultivating a large tract of farmland and abandons it. The natural changes that take place soon afterward, such as the growth of wild grasses and weeds, can be considered secondary succession because.
Answers
Old-field succession is an illustration of secondary succession. When agriculture is neglected, it happens. Weeds spread out and soon take over the land when cultivation stops.
What is the difference between primary and secondary succession?Primary succession takes place in a habitat that has never supported life. In a region that was formerly populated but underwent a disruption, such a wildfire, secondary succession happens.
What leads to secondary succession?After a significant disturbance like a severe flood, wildfire, landslide, lava, or human activity, animals and plants will recolonize a habitat in a process known as secondary succession.
Why is primary and secondary succession important?Primary succession can take tens of thousands of years. The climax communities of an environment can be restored through the process of secondary succession in as little as 50 years. During secondary succession, wildlife in the ecosystem are formed more rapidly.
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One reason cancer cells are easier to culture than normal cells extracted from an organism is that ________. Group of answer choices cancer cells grow in a more regulated fashion. cancer cells do not need to adhere to a substratum to grow. nutrient requirements for cancer cells are precisely defined. cancer cells are better models for demonstrating what happens in an intact organism.
Answers
Let's list the given options alphabetically to choose the appropriate answer.
One reason cancer cells are easier to culture than normal cells extracted from an organism is that ________. Group of answer choices
A. cancer cells grow in a more regulated fashion.
B. cancer cells do not need to adhere to a substratum to grow.
C. nutrient requirements for cancer cells are precisely defined.
D. cancer cells are better models for demonstrating what happens in an intact organism
Answer:
B.
Explanation:
Cancer cells are easier to culture in comparison to normal cells because cancer cells do not need to adhere to a substratum to grow.
As cancer cells are uncontrolled growth of cells and they do not require any substratum to grow and can easily grow to a culture while a normal cell require optimal conditions to grow in a culture.
Hence, the correct option is "B".
Genetic drift is a process that causes
A. organisms to have the same DNA as their parents
B. the genetic makeup of an entire population to change
C. the genetic makeup of an entire population disappear.
D. organisms to better adapt to their environment.
Answers
. If a parent cell had 6 chromosomes, how many during each phase listed below
Division (might need to see your notes or text pages 282-285)?
Answers
During each phase from prophase to G2, the number of chromosomes and chromatids in a cell can be summarized as follows:
Prophase: The parent cell has 6 chromosomes. Each chromosome consists of two sister chromatids, so there are a total of 12 chromatids.
Metaphase: The parent cell still has 6 chromosomes, and each chromosome still consists of two sister chromatids, resulting in 12 chromatids.
Anaphase: The parent cell still has 6 chromosomes, but during anaphase, the sister chromatids separate and are pulled to opposite poles of the cell. This results in 6 chromosomes and 12 individual chromatids, as each chromatid is now considered a separate chromosome.
Telophase: The parent cell still has 6 chromosomes, and the individual chromatids have reached their respective poles. The cell starts to divide, and the chromatids will further condense to form distinct chromosomes in the daughter cells.
Cytokinesis: The cell fully divides, resulting in two daughter cells. Each daughter cell will have 6 chromosomes, as inherited from the parent cell.
Interphase (specifically G1 and S phase): The daughter cells undergo DNA replication during the S phase of interphase. As a result, each chromosome is duplicated, resulting in 12 chromosomes and 24 chromatids.
G2 phase: The daughter cells enter the G2 phase, where they prepare for cell division. The number of chromosomes remains at 12, and each chromosome consists of two sister chromatids, resulting in a total of 24 chromatids.
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A) Group 2 elements have two valence electrons. Which kind of bond will they most likely form, and why? (1 point)
A covalent bond is likely because they want to share those two valence electrons in order to become stable.
An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
A metallic bond is likely because they are metals and can bond with other metals.
An ionic bond is likely because they are metals and will want to bond with nonmetals
Answers
Answer:
B. An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
Explanation:
Answer:
An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
Explanation:
What structure in the hypothalamus receives information about light from the retina and routes it to structures of the brain that regulate biological rhythms?.
Answers
Suprachiasmatic nucleus (SCN) receives information about light from the retina and routes it to structures of the brain that control biological rhythms.
The suprachiasmatic nucleus (SCN) is a cluster of hundreds of cells within the hypothalamus that receives information about light exposure directly from the eyes and controls your behavioral rhythm.
The suprachiasmatic nucleus (SCN) is a bilateral structure in the hypothalamus's anterior region. It is the principal pacemaker of the circadian timing system, regulating the majority of the body's circadian cycles. The SCN is served by a number of afferent neural pathways. The retinohypothalamic tract, which originates from photosensitive ganglion cells in the retina, is its main tract. Efferent projections from the suprachiasmatic nucleus innervate tissues such as the pineal gland, which produces melatonin to induce sleep throughout the night.
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Think about the variety of biomes on Earth and differences in their weather patterns. Which list shows environments from highest
average temperature to be lowest average temperature?
A) swamp, mountain, desert
B) swamp, desert, mountain
C) desert, swamp, mountain
D) mountain, desert, mounatin
Answers
Answer:
C
Explanation:
hope this helps
The list of biomes that shows environments from the highest average temperature to the lowest average temperature is desert, swamp, and mountain. Therefore, option C is correct.
What are biomes?Since they belong to certain areas or zones that, due to their geographical characteristics, share a climate, vegetation, and wildlife, biomes provide the primary support for the harmony of nature.
Any biome can include a wide range of habitats because the term "biome" is more general than "habitat." An area's climate and geography determine the biome classification. Communities that have adapted to the unique climate and ecology of the biome make up each one. Depending on the surroundings, they come in a variety of forms. The temperate deciduous biome is the ideal environment for human habitation.
The list of biomes that shows environments from the highest average temperature to the lowest average temperature is desert, swamp, and mountain. Therefore, option C is correct.
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what elements are carbohydrates made of?
Answers
Answer: carbon, hydrogen, oxygen or (c, h, o)
Explanation:
An organism that is non-native to an area and are introduced and begin to to grow uncontrollably are called what?
Answers
Answer:
Below, sorry that it's long.
Explanation:
An invasive species is both non-native to the ecosystem in which it is found and capable of causing environmental, economic, or human harm because of its ability to spread rapidly and compete with native species. This means that not all non-native species are considered invasive.
Answer:
invasive species
Explanation:
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Hello, Please answer these questions I rwally need them by today if anyone can help!!
1. Fill in the blanks below with the correct words to make a true statement:
Photosynthesis is a series of chemical reactions that use energy from the sun to convert water and _____________ into glucose sugar and _____________.
2. Fill in the blanks below with the correct words to make a true statement:
Cellular respiration is a series of chemical reactions that convert the energy in food molecules into energy stored in the molecule _________. Aerobic respiration requires the presence of Oxygen___________ and releases water and _________________ as waste products.
3. In the space below, write at least one complete sentence briefly describing why we need cellular respiration to survive.
Please if you do know the answer to this please replay i really really need them by today... Thank you!
Answers
Photosynthesis is a series of chemical reactions that use energy from the sun to convert water and Carbon-dioxide into glucose sugar and Oxygen.
Cellular respiration is a series of chemical reactions that convert the energy in food molecules into energy stored in the molecule C6H12O6. Aerobic respiration requires the presence of Oxygen and Hydrogen releases water and carbon dioxide as waste products.
Cellular respiration serves the straightforward objective of giving cells the energy they require to function. Food would be completely useless if living beings couldn't obtain the energy they required from it. No matter the type or quantity of nourishment, all living beings will eventually perish.
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In your own words, describe how DNA replication and RNA transcription occur. Your answer should include the names and functions of at least 5 proteins for DNA replication. and at least 2 proteins for RNA transcription. In what ways are they similar, and in what ways are they different?
Answers
DNA replication is a process in which DNA is duplicated so that each new cell produced by cell division has a complete copy of the organism’s genetic information.
It occurs in the S phase of the cell cycle. DNA replication involves the action of many proteins. Here are the names and functions of 5 proteins involved in DNA replication:
1. DNA polymerase III: Adds nucleotides to the growing strand of DNA.
2. Helicase: Unwinds the double helix to make the DNA molecule accessible for replication.
3. Primase: Synthesizes RNA primers on the lagging strand.
4. Ligase: Joins Okazaki fragments on the lagging strand.
5. Single-strand binding protein: Prevents the two strands of DNA from re-forming a double helix. RNA transcription is a process in which DNA is used as a template to create a complementary RNA molecule. It occurs in the nucleus and involves the action of many proteins.
Here are the names and functions of 2 proteins involved in RNA transcription:
1. RNA polymerase: Adds nucleotides to the growing strand of RNA.
2. Transcription factors: Proteins that bind to DNA and help RNA polymerase locate the start site of the gene being transcribed.
Similarities between DNA replication and RNA transcription: Both processes involve the use of a DNA template to create a new molecule. Both processes require the action of polymerases.
Differences between DNA replication and RNA transcription: DNA replication produces a complete copy of the DNA molecule, while RNA transcription produces a complementary RNA molecule. DNA replication occurs in the S phase of the cell cycle, while RNA transcription can occur at any time. DNA replication involves the action of more proteins than RNA transcription.
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