agnatha are what because they live off the blood of other fish

Answers

Answer 1

Answer:

They live off of the blood of another fish, they must have a host, so that makes these fish parasitic.

Explanation:


Related Questions

3. A strain of cells undergoes a mutation that increases the permeability of the inner
mitochondrial membrane to hydrogen ions.
a) What effect would you expect this mutation to have on the process of cellular
respiration? 12
b) Assuming the mutant cells can survive, how might the metabolic requirements of
these cells differ from those of a non-mutant strain of the same variety? 12

Answers

A mutation that involves the permeability of the inner mitochondrial membrane to protons (H+) will affect the amount of ATP. If mutant cells can survive, then they will need more energy to create a suitable gradient.

Cellular respiration is a series of metabolic reactions by which aerobic cells can generate energy in the form of ATP by using the chemical energy stored in the foods.

Cellular respiration can be divided into three sequential stages: glycolysis, the Krebs cycle (also called the acid citric cycle) and oxidative phosphorylation.

During oxidative phosphorylation, the transport of electrons across the inner mitochondrial membrane is coupled to the generation of an electrochemical proton (H+) gradient, which is then used to generate ATP by means of a protein complex known as ATP synthase.

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PLEASE HELP ME I NEED HELP​

Answers

Answer:

D

Explanation:

Hope this helps

Answer:

I'm pretty sure its D - hibernation

Explanation:

Torpor means a state of physical or mental inactivity, or lethargy.

Hibernation means an extended period of inactivity.

They are both used for survival in cold weather.

What is the difference between permanent gases and variable gases in the atmosphere?

Answers

Answer:

the difference is that permanent gases have larger residence times and Variable gases have shorter residence times

the difference between permanent gases and variable gases in the atmosphere is permanent gases are gases that have a very low dew point.

What are the characteristics of the atmosphere?

The Earth's atmosphere is basically composed of a mixture of gases, being 78% Nitrogen, 21% Oxygen and 1% Argon. In addition, traces of carbon dioxide, water vapor and other gases are found, but in very small amounts.

In this way,  permanent gases are gases that have a very low dew point.

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If a chromosome fragment breaks off and then reattached to the original chromosome, but in the reverse direction, the resultant chromosomal aberration is called:

Answers

Answer:

An inversion

Explanation:

An inversion occurs when a chromosome breaks in two places; the resulting piece of DNA is reversed and re-inserted into the chromosome. Genetic material may or may not be lost as a result of the chromosome breaks.

which term describes the site of a muscle attaching to the bone that moves the most?

Answers

Answer:

Insertion

Explanation:

Why is it that cancer does not form every time there is a mistake during the cell cycle?

Answers

Answer:

Cells will actually kill themselves through a process called apoptosis, or it will be attacked and killed so it doesn’t spread. For example, when you are exposed to the sun for a long period of time, the solar radiation can mess with your skin cells. That’s why you get sunburned: the cells dry up and fall off. Otherwise, you could get skin cancer

The reason why cancers does not form every time there is a mistake during the cell cycle is explained below:

The following information should be considered:

Cells will actually kill themselves through a process called apoptosis, or it will be attacked and killed so it doesn’t spread. For example, when you are exposed to the sun for a long period of time, the solar radiation can mess with your skin cells. That’s why you get sunburned: the cells dry up and fall off. Otherwise, you could get skin cancer

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which system is responsible for preventing pathogens from disturbing homeostasis?

Answers

Answer:

The immune system protects the host from pathogenic organisms (bacteria, viruses, fungi, parasites). To deal with this array of threats, the immune system has evolved to include a myriad of specialised cell types, communicating molecules and functional responses.

Explanation:

Help me please!!!!! ASAP!!! ​

Answers

Answer:

Noncyclic photophosphorylation (top) and cyclic photophosphorylation (bottom). These processes are better known as light reactions.

Glycolysis produces 2 ATP molecules, and the Krebs cycle produces 2 more. Electron transport from the molecules of NADH and FADH2 made from glycolysis, the transformation of pyruvate, and the Krebs cycle creates as many as 32 more ATP molecules.

I'm not sure if that'll help you, but yuhhh!

explain how the structure and the function of squamous epithelium in the lung are important for gas exchange​(4 marks)​

Answers

Squamous cells area one single layer and flattened, this allows for diffusion of oxygen and carbon dioxide to happen easily in the lungs.

When cells go through division in the early stages of life, they are known of stem cells. How do
we end up with all the different types of cells?

Answers

Answer:

these differentiate as a result of signaling mechanisms. ... The daughter cells divides and after each division it becomes more specialized. When it reaches a mature cell type downstream (for example, becomes a red blood cell) it will no longer divide.

Answer:

stem cells are called upon to generate a particular type of cell, they undergo asymmetric cell division.

Explanation:

with asymmetric division, each of the two resulting daughter cells has it's own unique life course

Imagine that you are managing a large wildlife preserve that was formerly a cattle ranch. You know from historical accounts that wild sheep used to live there, but they were hunted until the local population was exterminated. After doing some research to determine what might be an appropriate starting population, you introduce them. Food is abundant and they have no natural predators. You then spend several years graphing the number of individuals (on the vertical axis) against the number of generations (on the horizontal axis). By the 10th generation, the population begins to reach carrying capacity.

Requried:
What BEST defines this mathematical model used in population studies?

Answers

Being that they don’t have any natural predators by that 10th generation it should be back to normal capacity because of all the hunting. Sometimes humans do things out of convenience because they think that those animals are pests but,sheep aren’t predators and they are actually a very essential part of the animal kingdom in the farms and how they distribute food and kind of take care of each other, other animals and help farmers tremendously. and I mean they’re kind of amazing creatures and they provide a lot of resources for us that there’s it’s not necessary for us to hunt them. We won about 100 head of black Angus beef cattle and we only feed them organic however we won’t kill them unless maybe one has a bad leg or if there’s like an anomaly somewhere other than that he’s happy as most humane as possible and I appreciate your question and I hope it helped.

The mathematical model used in this population study is known as the logistic growth model.

What is logistic growth model?

The logistic growth model is a mathematical model that is used to describe the growth of a population over time. It is based on the idea that the growth of a population is limited by resources such as food, habitat, and space, and that as the population grows, the rate of growth begins to slow. This results in a curve that starts out steep and then levels off as the population approaches its carrying capacity, which is the maximum population size that can be sustained in a particular environment.

In the scenario described, the population of wild sheep is introduced to a wildlife preserve where food is abundant and there are no natural predators. This means that the population is able to grow at a relatively fast rate, but as the population increases, it begins to approach the carrying capacity of the preserve. At this point, the rate of growth begins to slow, and the population levels off.

This is reflected in the graph, which shows the population increasing rapidly at first and then leveling off as it reaches carrying capacity. The logistic growth model is often used to understand and predict the growth of populations in a variety of contexts, including agriculture, biology, and economics.

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What types of information can scientists learn from fossils?

Answers

how long life has existed on earth, an idea of an organisms size and how it has changed or evolved, and how some species may have gone extinct

Answer:

Types of information scientists learn from fossils is what it was like back then before we existed, these fossils also tells us our history and we might learn from the history and prevent any disaster that killed that animal or plant from happening to us

Explanation:

Hope this helps!

what types of solute molecules may be moved by facilitated diffiusion

Answers

Explanation:

Facilitated diffusion therefore allows polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane. Two classes of proteins that mediate facilitated diffusion are generally distinguished: carrier proteins and channel proteins.

A scientist wants to determine the age of a rock. The rock contains an index fossil and an ancient relative of a living organism. Which is more useful for dating the rock, and why?

Answers

Answer: Ancient Relative of a living organism

Explanation: Ancient Relative because by using the index fossil, you are also using the law of superposition. This law does not give you an accurate/specific date but instead the order they are in (i.e me saying i am older than my siblings compared to me saying i am 2 years older than them). By using an ancient relative of a living thing then we can see its phylogenic tree and measure around how old it is. Fossils also hold carbon and chemicals in there bones which allows us to use carbon dating. Carbon dating is an accurate way of measuring age.

WILL GIVE BRAINLIEST!!

Most of the world's iron ore, including that found in northern Minnesota, formed during the middle Precambrian period, ranging in age from 1.8 to 2.5 billion years old. They are composed of alternating layers of iron-rich material, most often magnetite or hematite, and silica. These iron oxide minerals formed on the ocean floor, creating the banded iron deposits you see here. What was the source of the oxygen that helped to produce these deposits?

A) The oxygen that was released into the atmosphere as a by-product of photosynthesis caused iron deposits to oxidize creating the iron oxide minerals.

B) Photosynthetic organisms making oxygen as a by-product of photosynthesis and the oxygen reacted with the iron dissolved in seawater to form iron oxide minerals.

C) The decomposition of carbon-based life forms in the oceans released oxygen and carbon dioxide. These gases reacted with the iron deposits forming the minerals mentioned.

D) In Earth's early biosphere, there were not organisms that underwent aerobic cellular respiration and an excess of oxygen built up in the atmosphere. This oxygen reacted with iron deposits to form iron oxide minerals.

Answers

Answer:

b

Explanation:

Answer:

) Photosynthetic organisms making oxygen as a by-product of photosynthesis and the oxygen reacted with the iron dissolved in seawater to form iron oxide minerals.

Explanation:

which words help determine the meaning of the word vividly in paragraph 1

Answers

context clues,

the meaning is a strong image

Summarize the lytic cycle. (1 point)

The viral DNA incorporates itself with the host cells and replicates whenever the host cell replicates itself.

A virus copies its genetic material and then splits its cell membranes in half to form identical viruses.

A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.


A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.

Answers

Answer: A virus injects its genetic material into the host cell, copies itself using the host's structures and resources, and then forms new viruses that burst out of the host cell

The lytic cycle is one of the two main life cycles of viruses, the other being the lysogenic cycle. In the lytic cycle, a virus infects a host cell and hijacks its cellular machinery to replicate and produce new virus particles, or virions.

The correct option is D .

The lytic cycle is rapid and results in the destruction of the host cell. It is often associated with acute infections, where the symptoms of the infection are more severe and appear relatively quickly. Examples of viruses that follow the lytic cycle include the flu virus (influenza), the common cold virus (rhinovirus), and many bacteriophages that infect bacterial cells.

The lysogenic cycle, on the other hand, is characterized by the integration of the viral genetic material into the host cell's genome, allowing the virus to remain dormant for a period before switching to the lytic cycle.

Hence , D is the correct option

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ribosomes contain three discrete sites where trnas bind and the polypeptide is synthesized. these are called site (a site), site (p site), and site (e site).

Answers

Answer:

Each ribosomal subunit has three binding sites for tRNA: designated the A (aminoacyl) site, which accepts the incoming aminoacylated tRNA; P (peptidyl) site, which holds the tRNA with the nascent peptide chain; and E (exit) site, which holds the

Explanation:

Each ribosomal subunit has three binding sites for tRNA: designated the A (aminoacyl) site, which accepts the incoming aminoacylated tRNA; P (peptidyl) site, which holds the tRNA with the nascent peptide chain; and E (exit) site, which holds the

Which ion/molecule in the saliva allows you to taste sugar as sweet? A. Hydrogen ions B. Sodium ions C. Glucose D. Alkaloid molecules​

Answers

Answer:

C. glucose

Explanation:

the presence of energy-rich carbohydrates, such as glucose, which increases the hedonic tone of food and strongly influences our eating behavior.

Glusose is the correct answer

fjhkfjkfhklghjlghjkl

Answers

Answer:

lol XD

Explanation:

A cross between a red cow and a white bull produces an offspring with a roan color (a spotted red-and-white color). This exhibits what type of genetic inheritance?

Answers

Answer:

co-dominance

Explanation:

in co-dominance both parents are dominant

PLZZZZ HELP MEEE I WILL GIVE BRAINLYEST

Answers

What's the question?

I cannot download anything from the internet sorry, so i need the question to be able to answer.

The answer would be choice A

What is XX and XY? And which are their differences?

Answers

Answer:

chromosomes

Explanation:

the diefference is that one is combination of female genes and the other a combination of female with male genes

the oceans lower atmosphere and contitents are the part of

Answers

Answer:

The oceans, lower atmosphere and contitents are the part of the Biosphere.

the global distribution of the diversity of phytoplankton is indicated in the map shown here. which statement best describes the reason for the distribution of different species of phytoplankton as shown here?

PLEASE HELP ME OUT!!

Answers

Answer:

A)Light levels and average temperatures are higher at 0 degrees latitud…

Explanation:

got it right on usa testprep :)

the part of the brain that coordinates the movement of skeletal muscles

Answers

I believe it’s the cerebellum.

Eukaryotes are __________________ and include __________________________.

Answers

Answer: Eukaryotes are the cells of animals, plants, and fungi and include membrane-bound organelles such as a nucleus and mitochondria.

Explanation: Hoped this helped! :D

Cortical nephrons have their corpuscles near the _________ edge of the cortex and are the ______ common type of nephron.

Answers

Answer: the first is Peripheral and the second blank is more

How would this impact the organism?

Answers

Answer:

how would what impact the organism?

a giant tortoise traveling at 0.3 km/hr would take how many hours to complete a marathon(42km)

Answers

140 h

Explanation:

speed =distance/ time

so rearrange the formula

time= distance/ speed

time = 42/0.3

time = 140 h

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