Specialized cells that filter out food particles, such as bacteria; characteristic of sponges. Animal that obtains organic matter for nutrition by filtering particles out of water. Opening through which water flows out of a sponge; excurrent pore.
Final answer:
Sponges are characterized by their unique filter feeding process, where water is pumped through their porous bodies, allowing collar cells (choanocytes) to trap and ingest food particles through phagocytosis.
Explanation:
Sponges, belonging to the phylum Porifera, are aquatic invertebrates known for their unique filter feeding system. Unlike other animals, they lack mouths and instead draw water through numerous pores on their surface. The water carries microscopic food particles into their bodies, which are then filtered out by specialized cells called choanocytes, or collar cells. These cells capture food through a process known as phagocytosis.
The feeding mechanism involves water entering through the pores (ostia) and passing through a large central cavity, the spongocoel, before being expelled out of the larger opening called the osculum. The water flow is unidirectional, driven by the beating of flagella on the choanocytes, within interconnected chambers lined by these cells. As the water passes, food particles are trapped by the collar of the choanocytes and ingested for nutrients, while oxygen is concurrently diffused into the cells, and wastes are expelled.
Overall, the key characteristic of sponges is their ability to filter feed by pumping water through their bodies, trapping food particles with their choanocytes, and utilizing intracellular digestion to sustain themselves.
Write a series of paragraphs that shows your knowledge of the following: the biochemical structure of DNA, how DNA replicates, how the DNA structure forms the genetic code, and how that genetic code comes to be expressed as a phenotype.
Explain the effects of radiation on the cellular process of mitosis and meiosis
Mitosis is a process whereby somatic cell divides while meiosis is a process in which germ cell divides.Both are essential processes that occur during development. However, delay in mitosis can result into alteration in cell kinetics pattern resulting in depletions of all populations.
Which statement describes the blood type of a person with Alleles lAi? A. It is type ab because I and I are codominant. B. It is type an because a and I are codominant. C. It is type a and I is dominant and A is recessive. D. It is type a because a is dominant and I is recessive .
Answer:
It's D
Explanation:
It is type A because A is dominant and i is recessive.
This is the correct answer
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What are Ceres,lda,and Gaspra
A. asteroids
B. comets
C. meteors
D. stars
Answer:
A. Asteroids
Explanation:
They are asteroids.
Here you find pictures of these amazing asteroids. From left to right you will find Ceres, Ida and Gaspra.
after being vaccinated, many children are treated for fever. this is not considered a danger or harm. why might this happen?
At what level does the relationship between a blue whale and ferret separate?
Blue whales and ferrets separate at the superorder level in biology.
Blue whales and ferrets separate at the superorder level, which happened between 85 and 105 million years ago. The exact relationships among the superorders are still not entirely clear, but they have distinct evolutionary paths.
Which of the following best describes our MRNA is produced?
Answer:
DNA provides a template for RNA polymerase.
Explanation:
can you help me,,,,,,please
Answer: I am going to say the third choice is your best bet.
Explanation:
Assuming the hawk is to be considered top of its food chain, all options besides the third are false.
in humans , the allele for long eyelashes is dominant (L) and the allele for short eyelashes is recessive (l). a female who is homozygous for long eyelashes and a male with short eyelashes have a child. identify the phenotype and genotype ratio of the offspring.
When a homozygous female with long eyelashes (LL) and a male with short eyelashes (ll) have children, all offspring will have long eyelashes with a genotype of Ll, leading to a phenotype ratio of 100% long eyelashes and a genotype ratio of 100% heterozygous (Ll).
In humans, the allele for long eyelashes is dominant (L) and the allele for short eyelashes is recessive (l). A female who is homozygous for long eyelashes (LL) and a male with short eyelashes (ll) will have children. All of the offspring will have one dominant allele for long eyelashes from the mother and one recessive allele for short eyelashes from the father, resulting in a genotype of Ll for each child. Since the long eyelash allele is dominant, all of the children will exhibit the phenotype of long eyelashes. Therefore, the phenotype ratio of the offspring will be 100% long eyelashes, and the genotype ratio will be 100% heterozyous (Ll).
During which process is mRNA converted into a sequence of amino acids for protein production?
The process wherein mRNA is translated into a protein is known as translation, a critical phase of protein synthesis occurring in the cytoplasm where ribosomes synthesize polypeptide chains that fold into functional proteins.
Explanation:The process in which mRNA is converted into a sequence of amino acids for protein production is known as translation. During translation, the cellular machinery interprets the nucleotide sequence of mRNA to produce a chain of amino acids, which then fold into functional proteins. Translation occurs in the cytoplasm, where the ribosomes facilitate the assembly of amino acids into polypeptides.
The mechanism of translation involves several key steps:
The activation of amino acids, preparing them for incorporation into the protein chain.tRNA molecules match specific amino acids to corresponding codons on the mRNA template.As tRNAs bring amino acids to the ribosome, the ribosome catalyzes the formation of peptide bonds between amino acids, elongating the polypeptide chain.The ribosome moves along the mRNA strand, synthesizing the protein until it reaches a stop codon, which signals the end of the translation process.Finally, the newly synthesized polypeptide chain folds into its functional three-dimensional structure.Each codon, a triplet of nucleotides within the mRNA, specifies a particular amino acid. The genetic code underpinning this process is nearly universal across all life forms, reflecting the fundamental role of proteins in biology.
What is the difference between the revolution and rotation of the Earth and the revolution and rotation of moon
Which of the following adaptations best helps desert plants survive? Wide leaves to lose water Spines to reduce water loss Smooth stems to increase transpiration Thin leaves to reduce the ability to store water
Answer:
mark the other guy brainliest he deserves it
Explanation:
Farmers in areas where there are no major rivers still require water for their crops. Where do these farmers most likely obtain the water needed for their crops? Question 11 options: 1) nearby oceans 2) melting ice 3) morning dew 4) underground sources
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In the United States, less than 0.8% of the population has type I diabetes. Which of the following facts supports the theory that a person's risk of developing diabetes has a genetic, inherited component?
A. If one parent has type I diabetes, each child's chance of developing diabetes is between 1% and 6%.
B. If one identical twin has diabetes, the other twin has a 50-75% chance of having diabetes.
C. If both parents have type I diabetes, each child's chance of developing diabetes is between 10% and 25%.
D. all of these
The germ theory of disease states that many diseases are caused by the presence and action of specific
Answer:
Microorganisms
Explanation:
Which headline would be an example of genetic engineering?
A.) Mrs. O'Hara Gives Birth to Fourth Redhead
B.)Farmer Brown's Pigs: Best Quality Ham for the money
C.) Gene Added to Liver Improves Clotting Time
D.) Bacteria Make Human Insulin
Answer:
The correct answer is option D, Bacteria Make Human Insulin
Explanation:
Through the recombinant technology of genetic engineering, DNA of one organism can be transferred into the DNA of other organism. In a bacteria, the genes can be modified to produce human insulin. The gene for human insulin is chemically joined to the plasmid of bacterial DNA. Thus whenever the bacteria replicates its DNA, it also replicates the gene for human insulin thereby producing multiple sets of synthetic human insulin.
After a volcanic eruption has covered an area with lava, which of the following is the most likely order of succession in the re-population of the area? * lichens → grasses → shrubs → trees mosses → grasses → lichens → trees grasses → trees → mosses → lichens shrubs → grasses → trees → lichens
After a volcanic eruption, the order of succession in the re-population of the area is following:
Lichens → grasses → shrubs → trees.
The correct option is A.
Ecological successionThe process of change in the species structure of an ecological community over time is known as ecological succession.Lichens are considered a self-sustained miniature ecosystem of themselves.They can grow themselves in any condition.After lichen, grasses can be grown and, then shrubs and trees.Thus, the correct option is (A).
Lichens → grasses → shrubs → trees.
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What is a basic characteristic of all living cells
Which planet most resembles Earth in terms of all of the factors: temperature, gravity, atmosphere, and water?
Which of the following was determined by Charles Darwin but based on contributions from another scientist
A. Species can go extinct during catastrophes
B. Species could go extinct when their environment changed if they could not adapt to the change
C. The population can increase faster than the food supply
D. The processes that change organisms work quickly and have only been around for a short time
The correct answer is option B, that is, Species could go extinct when their environment changed if they could not adapt to the change.
According to Darwin and some of the other scientists who studied the concept of evolution, extinction is usually a result of a change in environmental conditions. When conditions modify, some of the species exhibit adaptations, which permit them to reproduce and survive, while others do not.
If the environment modifies gradually, then the species at certain occasions will develop the essential adaptations, with various generations. If conditions modify more briskly than a species can develop, however, and if the individuals of that species are devoid of the trait, which is required to thrive in the novel surrounding, the probable outcome will be extinction.
what are some radioactive resources.
The image shown is an artist's drawing of a nerve cell. The overall shape and structure of a nerve cell is unlike most other types of cells. Which particular function of nerve cells is facilitated by the unique shape of the cell? A) communication B) digestion C) metabolism D) transportation
The correct answer is option A which is communication.
Explanation:Nerve cells have a different structure from other types of body cells due to a different function.
The function of the nerve cell is to communicate the nerve signals in the nervous system from the receptor to the brain and from the brain to the effector.
The nerve cell has a cell body and an extended fiber type area known as the axon.
This specific structure is suitable for the transport of nerve impulse from one end to another which is for the communication between two nerve cells.
What is the result of sex cells having mutations during replication
Answer:
offpsring with mutations
Explanation:
:)
can you list six physical properties
and 2 chemical properties of this picture Hurryy!!
Describe what is happening in each stage and what each stage looks like:
Prophase
Prometaphase
Metaphase
Anaphase
Telophase
Cytokinesis
Describe the purpose of mitosis.
Answer:
Mitosis is a type of cell division which produces two genetically similar daughter cells. This is involved in the cells of growth of somatic cells in an organism which has to to be produced with the same genetic material. It is also involved in the asexual mode of reproduction as it produces clones with the same genetic material such as in angiosperms.
Mitosis is divided into two phases- karyokinesis and cytokinesis where karyokinesis is divided into 4 stages which can be easily marked as:
Prophase- chromatin condensation, nuclear envelope disappears. Prometaphase- chromatin condenses to form a packaged structure called chromosomes. Metaphase- chromosomes align at the equatorial plate of the cell, chromosomes highly condensed. Anaphase- chromosomes start separating, each chromatid moves towards the opposite pole of the cell. Telophase - cytokinesis begins, nuclear envelope reappears. Cytokinesis- cell division by the appearance of cell furrow in animal cells and cell plate in plant cells.Which statements accurately describe matter? Check all that apply. Only living things are made up of matter. Matter is made up of tiny particles called atoms. Atoms were discovered in the twenty-first century. Atoms cannot be divided. A single atom can be seen only with a standard microscope.
The right options are;
Matter is made up of tiny particles called atoms, and atoms cannot be divided.
A matter is any object that has mass and occupies space (volume). All matter are made up of tiny particles known as atoms. Atoms are composed of interacting subatomic particles which are; electrons, protons, and neutrons. Matter exists in various states such as solid, liquid, and gas.
Answer:
Matter is made up of tiny particles called atoms.
Atoms cannot be divided.
Matter is defined as anything that has mass and occupies space which could be a plant or animal.
Matter is however made up of smaller/tiny particles called Atom. Matter was discovered in the seventeenth century and not in the twenty first century.
Atom however cannot be divided into smaller parts and is regarded as the smallest unit of matter although it contains some sub-atomic particles such as proton and neutron.
It can however be viewed only with an electron microscope as it is too small to be viewed by a light or standard microscope.
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Colliding air masses can form a weather front. Which of the following is not a type of front:
2 points
A Stationary Front
B Storm Front
C Cold Front
D Occluded Front
Describe the mass and surface temperature of the main sequence stars.
Answer:
Mass of main sequence star - 10 to 200 times of mass of sun
Temperature of main sequence star - 15-18 million kelvin
Explanation:
Majority of stars in the universe are main sequence stars. These stars consists of helium in their cores. Mass of main sequence stars can be as low as one tenth of mass of sun and can be as high as 150 to 200 times the mass of sun. The age of a star depends on its mass. Thus more massive a star is more is its life. The temperature of star is high enough to fuse the hydrogen with in them to form helium atom. Their temperature can be as high as 15-18 million kelvin.
Organisms belonging to the Kingdom Eubacteria, Kingdom Archaebacteria, and some organisms in the Kingdom Protista are unicellular. What is it that places them into different kingdoms?
6. Which of these BEST describes our current understanding about how species evolve over time?
A) As organisms use certain traits more frequently, each organism evolves over time.
B) Populations of organisms evolve rapidly due to genetic changes brought about by random mating patterns.
C) Traits that result in a greater number of mutations occur more frequently, causing the population to evolve.
D) Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.
7) A change in a sequence of DNA bases in a bacterial cell has resulted in a mutation. This mutation has increased the ability of the bacteria to break down and digest organic molecules in the environment. Bacteria with this mutation are better able to find and utilize food sources. According to the theory of natural selection, what is MOST likely to occur in future generations of this bacteria?
A) The relative frequency of the mutation will increase as time passes.
B) Because the mutation has changed the DNA of the bacteria, a new species will be formed.
C) Because the mutation is abnormal, the mutation will become more rare with every passing generation.
D) Bacteria with the mutation will increase in number until the food supply is exhausted, causing the bacteria to become extinct.