[tex]\Huge\text{Pisces or Fishes}[/tex]
Pisces or Class Fish is the largest group of chordates which includes 25000 species of fishes. Study of fishes is called Ichthyology.
Fish is an aquatic gill breathing gnathostomates whose stramlined body is provided with paired fins and covered over dermal scales.
Super Class pisces is divided into two classes:
Chondrichthyes Osteichthyes _____________________________________
[tex]\Huge\textbf{Chondrichthyes}[/tex]
Chondrichthyes are Cartilagineous fishes. This class is also called Elasmobronchi. It has exclusively marine fishes with endoskeleton made of cartilage. Their skin has tiny shark enamel coated denticles called Placoid Scales. They are heterocercal and Mouth is present at ventral to tail fins. They have exposed 5 gills on each sides.
Example Shark, Ray fishes, Dog dish etc
_____________________________________[tex]\Huge\textbf{Osteichthyes}[/tex]
These fishes are Bony Fishes. This group is also called Teleostomi, They are found in both marine and fresh water. Their endoskeleton is made up of bones. Their skin has thin bony plates called cycloid or ctenoid. Their gills are covered with outer skin called operculum. Tain fin is homocercal and mouth is present at anterior tip.
Examples Sea Horse, Gold fish, Eel etc
_____________________________________[tex]\huge\text{Similarities}[/tex]They have gill to breath Streamlined body to move in fast moving water All fishes are cold-blooded. Fins are present for locomotion They have great sense of smell They have air bladder to be bouncy[tex]\Huge\text{Dissimilarities}[/tex]
Chondrichthyes are exclusively marine fishes while Osteichthyes are both fresh water and marine water living.The skeleton of Chondrichthyes is made of cartilage while the skeleton of Osteichthyes is made of bones.The gills of Chondrichthyes is NOT covered with operculum while the gills of Osteichthyes are covered with outer skin operculum. The skin of Chondrichthyes has tiny shark enamel coated denticles called Placoid Scales while the skin of Osteichthyes has thin bony plates called cycloid or ctenoid.The tail of Chondrichthyes is Heterocercal and mouth is ventral to the tail fins while the tail of Osteichthyes is homocercal and the mouth is present at anterior tip._____________________________________Best Regards,'Borz'Biotic and abiotic factors are both essential in shaping an ecosystem.
True
False
Answer:
True
Explanation:
14 POINTS! A sound with a large amplitude will trasmit a
A. lot of energy
B. high frequency
C. long wavelenght
D. low intensity
Someone please help I took the picture this is my last question on my homework
Answer:
According to the image that represents a cell in the human body, the true statement is that structure 4 is the cell membrane that provides exchange of O₂ & CO₂.
Explanation:
In cells, the cell membrane acts as a semi-permeable barrier to the passage of substances, including nutrients and oxygen (O₂).
One of the functions of the cell membrane is to allow the exchange of O₂ —necessary for the cell— and carbon dioxide (CO₂), a product of cell metabolism that must be removed.
In the image, the structure identified with the number 4 corresponds to a cell membrane of human cells that provides this gas exchange.
The other options are not correct because:
Structure 1 is a ribosome, not a chloroplast. Structure 2 is the nucleus, not a vacuole containing DNA. Structure 3 is a mitochondria, but protein synthesis does not occur there.Please help as soon as possible!!!!!!!!!
Answer: it might be chemical 1, but I could be wrong
Explanation:
(GIVING BRAINLIEST!!)
What causes water to runoff?
A) The sun heats up Earth's surface.
B) Water vapor condenses into water droplets.
C) Water does not soak into the ground.
D) There is a small amount of precipitation.
Explain why.
Answer: Runoff occurs when there is more water than land can absorb. The answer you’re looking for is C.
Explanation: The excess liquid flows across the surface of the land and into nearby creeks, streams, or ponds. ... Glaciers, snow, and rain all contribute to this natural runoff. Runoff also occurs naturally as soil is eroded and carried to various bodies of water.
The molecules shown in this image are able to cross the cell membrane
through facilitated diffusion. How will they be transported?
A. The molecules will move through channels in the membrane hy
proteins from inside the cell to outside the cell.
B. The molecules will move directly across the membrane from
inside the cell to outside the cell.
C. The molecules will move through channels in the membrane proteins from outside the cell to inside the cell.
D. The molecules will move directly across the membrane from the outside the cell to inside the cell.
Answer:
The molecules will move directly across the membrane from
inside the cell to outside the cell.
Explanation:
Ape-x
Facilitated diffusion is the type of transportation that moves the ions and the molecules. The molecules are transported directly through the membrane from inside to outside. Thus, option B is correct.
What is facilitated diffusion?Facilitated diffusion is the transportation of the molecules and ions across the cell membrane along the concentration gradient. It is a passive transport that involves the movement down the gradient.
The molecules are transported by the membrane proteins that facilitate their movement from inside of the cell towards the outer space of the cell. Unlike simple diffusion, facilitated diffusion uses energy in the form of ATP.
Therefore, the molecules present inside the cells will move directly towards the outside of the cell.
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Characteristics or adaptations that help antartic fish survive in their habitat?
Answer:
Antifreeze glycoproteins. (AFGP's)
Explanation:
Antifreeze glycoproteins are antifreeze compounds added into their blood at very high compounds.
Mary poured 40,000 cm3 of water into an aquarium that
is shaped like a rectangular box. If the length and width
of the aquarium are 40 cm and 80 cm, respectively, what
is the height, in centimeters, of the water in the
aquarium?
Answer:
The correct answer is - 12.5 cm3.
Explanation:
Given:
volume = 40000 cm3 (aquarium an hold water)
length and width = 40 cm and 80 cm
Height = ?
Formula:
Volume = length*width*height
Solution:
Putting the value in the formula -
40000 = 40*80*h
h = 40000/3200
h = 12.5
I’d appreciate it very much, if someone would help me with these two questions
Answer:
1. C
2. D
Explanation:
In an experiment, which aims at solving a particular problem or answering a scientific question about nature, the scientific method is employed. The scientific method contains the following steps:
- Making an observation.
- Asking a question.
- Formulating a hypothesis
- Testing the hypothesis via experimentation
- Analyzing the results
- Conclusion
According to question 1, the PURPOSE of an experiment portrays what is about to be done in a question format. For example, a purpose can go this: What will be the effect of pesticides on the growth of cowpea?. Furthermore, the PURPOSE helps make a research and state a hypothesis in the next step.
- In the analysis of result, the qualitative or quantitative approach is used. The QUANTITATIVE method involves the use of numbers or numerical data to express the outcome or result of the experiment. By counting or measuring, a numerical data is collected and given a unit depending on what is being measured
DUE TODAY helppp pleaswee
The floor of the Atlantic Ocean is split in two by an immense volcanic chain that spans more than 40,000 miles around the
globe. True or false ?
A. True
B. False
It’s science FYI
The statement is true because the floor of the Atlantic Ocean is split by an immense volcanic chain that spans more than 40,000 miles around the globe
What is the atlantic ocean?The atlantic ocean is a massive body of water that spans across approximately one-fifth of Earth's surface. It is the large body of water that separates Africa and Europe.
The floor of the Atlantic Ocean is split by an immense volcanic chain that spans more than 40,000 miles around the globe hence the assertion is true.
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how are sexual traits adaptations
Answer:
stronger and longer organ are able to mate more with females, whereas the shorter one didn't stand a chance.
A piece of wood that measures 3cm by 6cm by 4cm has a mass of 80g.
What is the density of the wood?
Answer:
1.1 would be the densiry
explanation
p=m/v is the density formula p being density and m being mass and v being volume
multiply 3 by 6 by 4 to get volume of 72
80÷72 = 1.1
Please hurry i need help.
What process ensures that the normal number of chromosomes is restored after each cell division? During what part of the cell cycle does this occur?
Answer:reproduction
Explanation: when the sperm and egg unite to form a single cell, the number of chromosomes is restored in the offspring. Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome.
SpongeBob and his pal Patrick love to go jellyfishing at Jellyfish Fields! The fields are home to a special type of green jellyfish known as Goobers and only really great jellyfishermen are lucky enough to catch some on every trip. Many of the jellyfish are yellow (BB) or blue (bb), but some end up green as a result of incomplete dominance. What would happen if SpongeBob and Patrick crossed two "goobers” or green jellyfish? Complete the Punnett square to help you determine the probability for each color of jellyfish. What percentage would be "goobers" (green)? 0% 25% 50% 100%
The Punnett square to help you determine the probability for each color of jellyfish percentage would be "goobers" are 50%.
What is the goobers?Goobers is a slang term used to refer to someone who is naive or foolish. It can be used to describe a person who is easily taken advantage of or someone who is generally inept. Goobers are often seen as endearing and often have an innocent quality about them. They are also often seen as lacking in common sense and understanding of the world around them.
BB BB BB BB
bb bb bb bb
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How is environmental health related to personal health?
Explanation:
preventing human injury and illness and promoting well-being to be well
If mother has type AB Blood and father has A blood type what percentage of their children are likely to have Type A blood?
Answer:
blood with certain proteins clump together when exposed to certain antibodies. A patient has type AB blood. If they received a transfusion of type B blood, predict and explain what would happen. Agglutination would occur because a person with type B blood cannot receive AB blood because they have A antibodies.
Explanation:
A cell is placed in a container of salt water that has 42% salt and the cell has 15% salt inside:
a. What type of solution is it?
b. what direction will the water go?
Answer:
it is a mixture of salt and solute.
Explanation:
it the north direction
Which of the following best describes the genetic complement in each
daughter cell at the conclusion of meiosis?
A. A haploid set of chromosomes that are a recombination of the
parents' chromosomes
B. A diploid set of chromosomes that are identical to the parents'
chromosomes
C. A diploid set of chromosomes identical to the other daughter cells'
chromosomes
D. A haploid set of chromosomes that are identical to the parents'
chromosomes
Answer:
A
Explanation:
Meiosis end in four daughter cells that are haploid and contain half the chromosomes as the parent cell and genetically different from the parent cell and from each other, so A would be the right answer.
A haploid set of chromosomes that are a recombination of the parents' chromosomes best describes the genetic complement in each daughter cell at the conclusion of meiosis.
What do you mean by meiosis?Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells.
Moreover, meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells.
Meiosis is important for three main reasons: it allows sexual reproduction of diploid organisms, it enables genetic diversity, and it aids the repair of genetic defects.
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Bacteria are able to reproduce very quickly through a process known as binary fission. Binary fission requires only one parent. Based on this information which inference is most accurate?
Answer:
this is called asexual reproduction
Explanation:
it is where one parent makes a clone of themselves through budding.
A certain species of trilobite is known to have lived 300 million years ago. If this index fossil was found in a rock layer containing other fossils, what could you infer about the other fossils
a The rock layer killed the trilobite and the other fossils
b The other fossils are about 300 million years old
c The organisms that formed the other fossils are still living.
d The rock layer formed before the trilobite and other organisms
Answer:
b The other fossils are about 300 million years old
Explanation:
From the description of the problem given, we can correctly conclude that the other fossils are about 300 million years old and even the rock layers formed around that period in time too.
Fossils are the preserved remains of organisms that has once lived. Through the principle of relative dating we can determine the age of fossils and those of other related ones. According to the principle of fossil and fauna succession, "fossils succeed one another in a predetermined form". So, the fossils occurring together within the rock layers are of the same age.
Help plz and can you plz use the key terms
Answer:
srry im not in this unit yet
Which of the following is one of the most abundant elements in all living
things?
A. Tin
B. Titahsum
C. Silver
D. Carbon
Can you change a cladogram?
I may give brainliest to the right answer.
Answer:
Yes you can but you would need solid evidence to do it, we used to think that lizards and crocs were more closely related because of their appearance or phylogeny but with new and better evidence we now hypothesize (clads are just hypotheses) that birds and crocs are more related
Explanation:
Answer:
no you can not
Explanation:
How do fungi reproduce asexually by budding????
Answer:
Answer is on the pic.
Explanation:
I hope it's helpful!
what does federal law require of employers in regard to the hospital B vaccine
Answer:
Health care workers who work with blood or other bodily secretions which may carry the HBV virus must receive a free HBV vaccination.
DNA Replicates at which phase of the cell cycle? *
A. G1
B. S
C. G2
D. Mitotic (mitosis and cytokinesis)
Answer:
B. S
Explanation:
Correct
(GIVING BRAINLIEST!!)
Which type of precipitation is most likely to occur when both air and cloud temperatures are above freezing?
A) Rain
B) Snow
C) Hail
D) Sleet
Answer:
it should be A or rain to be specific
Answer:
rain
Explanation:
If the ar is above freezing, the precipitation will most likely be rain. If the air is below freezing, the precipitation will most likely be snow. When air temperature is only a few degrees above freezing, precipitation may fall as sleet. Hail is most commonly formed within the cumulonimbus clouds of thunderstorms.
I NEED HELP WITH THESE QUESTIoNS PLEASE HELP ME all answers i need thx
1. What is a nucleotide? How are nucleotides held together in DNA?
2. What is DNA replication? When and where does it occur?
3. Explain the steps of DNA replication, including the enzymes used?
4. What does the base pair rule state?
5. What is RNA?
6. What are three differences between DNA and RNA?
7. What are the three types of RNA?
8. What is transcription? Explain the process, including the ending product.
9. What is a codon? How do you read them?
10. What is translation? Explain the process, including the end product.
11. Explain the role of mRNA, rRNA and tRNA in translation.
12. What is a mutation?
13. How are mutations caused?
14. What are the difference types of mutations?
15. What are some effects of mutations?
16. What is cancer?
Answer:
PLZ MARK AS BRAINIEST THANK AND FIVE STAR:)
1. Nucleotides are joined together by covalent bonds between the phosphate group of one nucleotide and the third carbon atom of the pentose sugar in the next nucleotide. This produces an alternating backbone of sugar - phosphate - sugar - phosphate all along the polynucleotide chain.
2. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.
3. Enzymes that participate in the eukaryotic DNA replication process include: DNA helicase - unwinds and separates double stranded DNA as it moves along the DNA. It forms the replication fork by breaking hydrogen bonds between nucleotide pairs in DNA. DNA primase - a type of RNA polymerase that generates RNA primers.
4. Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio (base pair rule) of purine and pyrimidine bases (i.e., A+G=T+C) and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.
5. RNA plays a central role in turning genetic information into your body's proteins. This remarkable molecule also carries the genetic instructions for many viruses, and it may have helped life get its start.
6. the three main structural differences between RNA and DNA are as follows: RNA is single-stranded while DNA is double-stranded. RNA contains uracil while DNA contains thymine. RNA has the sugar ribose while DNA has the sugar deoxyribose.
7. Of the many types of RNA, the three most well-known and most commonly studied are messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA), which are present in all organisms.
8. Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template.
9. A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. DNA and RNA molecules are written in a language of four nucleotides; meanwhile, the language of proteins includes 20 amino acids.
10. Translation is the process of translating the sequence of a messenger RNA (mRNA) molecule to a sequence of amino acids during protein synthesis. The genetic code describes the relationship between the sequence of base pairs in a gene and the corresponding amino acid sequence that it encodes.
11. Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein.
12. A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
13. A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.
14. There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.
15. By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition.
16. Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread throughout your body. Cancer is the second-leading cause of death in the world.
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HOPE THIS HELPS:)
*
What is the male part of the flower called
Answer:
anther
Explanation:
Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.