What is shown in the image?
prokaryote
eukaryote
chloroplast
mitochondrion
Answer:
C. Chloroplast i just did the test on edgeunity
Explanation:
The student chewed the bread and kept it in test tube and added few drops of Iodine solution
Answer: here`s your answer
Explanation: the solution will turn blue black colour as the presence of starch in bread and saliva from the mouth the iodine reacts with it and turns it blue black
bones give us shape, protect internal organs, and
Answer: help us move ? it might also be that the support our body.
Explanation: im not too sure but i think this is the answer
Which lists the steps of Meiosis II in the correct order?
anaphase II, metaphase II, prophase II, telophase II
prophase II, metaphase II, anaphase II, telophase II
anaphase II, telophase II, prophase II, metaphase II
prophase II, telophase II, anaphase II, metaphase II
Answer: Prophase II, metaphase II, anaphase II, and telophase II
Explanation: In prophase the spindle forms to prepare the chromatids for splitting. Metaphase lines up the chromosomes at the equator. In anaphase, the sister chromatids split, and in telophase seperate cells are created.
The spindle develops during prophase to get the chromatids ready for splitting. The chromosomes are aligned near the equator during metaphase. Sister chromatids split during anaphase, and separate cells are formed during telophase. Thus, option B is correct.
What is the importance of steps of Meiosis II in cell cycle?The second division of meiosis, known as meiosis II, occurs when each chromosome's chromatid is evenly distributed across the daughter cells. The interphase, which comes before meiosis II, is a period in which DNA is not replicated.
It keeps the number of chromosomes in sexually reproducing organisms constant. Haploid gametes are created from a diploid cell, and they then combine to create another diploid cell. 2. It limits chromosomal number multiplication and preserves stability.
Therefore, Each time cells divide, it causes the development of four daughter cells. The daughter cells have the same size and structure as the mother cell, but have a different number of chromosomes.
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What relationship exists between genes and chromosomes?
The relationship that exists between genes and chromosomes is that genes are found in chromosomes.
What is a chromosome?Chromosome is defined as the hereditary material that are found in the cells of parents which are transferred to their offspring during reproductive processes.
The chromosomes are made up of proteins called histones which the genes are wound around .
Genes are defined as the functional hereditary unit that is found in the chromosomes of mammalian cells.
Therefore, a relationship is said to exist between the chromosomes and the genes because the genes are found within the chromosomes.
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Which of these is true about vaccines?
A
They prevent viruses from replicating once you are infected.
B
They are not effective at giving people immunity against a virus.
C
They cause the body to produce antibodies against a specific virus.
D
They cause the body to become actively infected with a mild form of a specific virus.
Answer:
a
Explanation:
Answer:
A. C, and D
Explanation:
A: it inserts that type of virus into your body so your immune system learns how to defend your body from it.
C: Your body produces some type of small organism cell or whatever it is to work and fight against that specific virus.
D: Yes, the vaccine is basically the virus but a test so your body learns how to fight it.
Can someone please help me this question?
The choices are:
A) move and capture food
B) create and exchange genetic material
C) Store and regulate water
D) make and store energy
Answer:
A) move and capture food
Explanation:
Amoeba is madeup of single cell and having a true nucleus or membrane around the nucleus. Amoeba belongs to kingdom protista because it has some characteristics of animals such as it can move from one place to another. Amoeba used phagocytosis which is a type of endocytosis in which large substances are entered into the cell. Pseudopod is part of amoeba body which is responsible for the movement and capturing the food.
What do both scientific laws and theories require?
Answer: Both require A) Acceptance from the scientific community. B) Extensive amounts of valid evidence supporting the law and theory.
Explanation:
Which of the following energy transfers occurs when food is digested?
Explanation: transformed into thermal energy your body putting off heat
answer mechanical energy
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According to the article, how does the intermittent recovery test differ from the intermittent endurance test?
The intermittent recovery test differ from the intermittent endurance test in the way that intermittent recovery test uses twenty-five meter long strip of floor space instead of twenty-two and half meter long strip.
Explanation:
In intermittent endurance test, twenty-two and half meter long strip divides the floor into two sections - one of twenty meter and another of two and half meter. The subject is supposed to run in the longer section a per CD until he reaches the other side or he hears the recorded beep.
One hearing the beep, he must turn and return back to his starting point. On reaching there, he is given five seconds time to walk or jog in the shorter section which is of two and half meter.
If the subject fails to cover twenty meter long section before beep sound, a warning is issued to him.
In case of intermittent endurance test, twenty-five meters long strip is used to divide the floor section into parts, one of one of twenty meter and another of five meter. In this test extra five seconds are also added for active break time, thus making it of ten seconds.
Answer:
The intermittent recovery test differ from the intermittent endurance test in the way that intermittent recovery test uses twenty-five meter long strip of floor space instead of twenty-two and half meter long strip.
Explanation:
Which activity is most likely to lead to lactic acid fermentation?
O
eating a big breakfast
O
sleeping for ten hours
O
taking a difficult exam
O
doing 100 sit ups in 5 minutes
A cows grazing in the field. Under what conditions does the cow have relative motion
Relative motion has been defined as the motion or the velocity of the object in reference to the start point. The cow will have relative motion if it changes its position compared to the reference.
What is relative motion?Relative motion or relative velocity has been the velocity and motion of the object with reference to the initial point and to the other body. It defines the rate of change occurring in two different bodies at the same time.
It can be used to show the relative motion of the cow as a reference point or frame is taken as the point to which the motion or the velocity of the cow is taken into consideration. The field is the fixed point to which the cows show motion.
Therefore, the relative motion of the cow can be explained based on the reference point of the field.
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Relative motion between the cow and its surroundings occurs when either the cow is moving while the surroundings remain stationary, or when both the cow and the surroundings are in motion but with different velocities or directions.
When the cow is grazing in a stationary field, there is no relative motion as both the cow and the field are moving together with zero relative velocity.
However, if the cow is walking across the field or if the field is being traversed by other elements such as wind or water currents, relative motion between the cow and the surroundings arises.
Additionally, if the cow is stationary while the field is being traversed by, for example, a strong wind, relative motion occurs.
In essence, relative motion between the cow and its surroundings happens when there is a difference in their velocities or directions of movement.
What is shown in the diagram below?
A. Sun breeze
B. sea breeze
C. land breeze
D. water breeze
Answer:
b sea breeze
Explanation:
I hope I helped
Answer: C. Land breeze
Explanation:
Since there is a lower pressure over the ocean and the air is warmer it is going to try to move towards the higher pressure to balence it out. Causing a Land Breeze
look at picture please and ty.
Describe the weathering process that has occurred to cause a dome to look the way it does now?
Answer:
The rain, wind, and possibly hail where's down the dome rock causing chucks of the dome fall off.
Explanation: The rain softens the rock while the wind blow debris on the dome and (possibly) hail knocks the chucks of rock off the dome. (If there is no hail then eventually the rain and wind will make the rock fall off the dome)
Hope this helps!The energy of a UV wave from the sun becomes part of the internal energy of the sidewalk causing the sidewalk to heat up, then the wave's energy was
Answer:
The wave energy was transformed into thermal energy.
Explanation:
Thermal energy is energy related to the generation of heat within a system. This is because thermal energy arises when potential energy agitates the molecules of a system, generating kinetic energy. This agitation of the molecules promotes heat to the system, transforming the kinetic energy into thermal energy and making the system temperature higher.
An example of this can be seen when the waves coming from solar energy promote the heating of a system, like a sidewalk for example. These waves promote the movement of the sidewalk molecules, transforming the wave energy into thermal energy.
What is the relationship between parent and offspring genetic information?
Answer: The offspring contain one one set of chromosome from the mother and one from the father.
Explanation: During sexual reproduction, when the egg and sperm meet, the sperm contains 23 chromosomes and the egg also contains 23 chromosomes. Together the chromosomes combine, accounting for the genetic information in the offspring.
Some areas of an ocean are known as dead zones. These zones form when excess organic material decomposes. This increased decomposition uses up the oxygen from the water. Which human activity is most affected by the increasing number of dead zones in the ocean?
Answer:
Water Pollution
Explanation:
Dumping trash in the ocean and the smoke from factories goes in the water which makes the ocean more acidic and having less oxygen.
~Hope this Helps~
Answer:
It's B) Commercial fishing, because fish cannot survive without oxygen
Explain why DNA is the best type of evidence for evolution.
Evidence for large-scale evolution (macroevolution) comes from anatomy and ... DNA sequences comparisons can show how closely species are related. ... In this article, we'll look at several types of information biologists use to trace and ... of organisms on Earth follows patterns that are best explained by evolution, ...
Answer:
DNA is the best type of evidence because it shows that human DNA is closest to Monkey and gorillas which leads people to believe we came from them and evolved into a different species
Explanation:
PLEASE ANSWER THIS
After recording the mass of the wood block, what other measurement must the student determine to calculate the density?
A) color
B) mass
C) temperature
D) volume
Answer:
D. volume
Explanation:
formula for density is mass / volume
I think it's volume.
Xylem and _______________ are the two types of tissue that comprise a plant's vascular tissue.
A.mylem
B.phloem
Answer: B, is the asnwer you are looking for.
Explanation:
What separates a salamander from a turtle?
One of the 14 families of living turtles, tortoises are just a collection of closely related land turtles with common names that finish in tortoise rather than turtle.
Thus, toads are just many species of frogs that, despite not all being closely related to one another, have drier skin than most other frogs and a propensity to secrete harmful substances.
And newts are simply salamanders from the same family that are termed newts rather than salamanders for some reason.
As with toads compared to frogs and newts compared to salamanders, all turtles are turtles, but not all turtles are turtles.
Thus, One of the 14 families of living turtles, tortoises are just a collection of closely related land turtles with common names that finish in tortoise rather than turtle.
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Final answer:
Salamanders have moist skin and need water for reproduction, unlike turtles which have dry scales and a hard shell. Salamanders are amphibians with varying modes of respiration and share a facial resemblance with frogs and toads.
Explanation:
What separates a salamander from a turtle? One of the key distinctions is their skin; salamanders have moist skin, which is quite different from the dry scales on a turtle's skin. Salamanders are also amphibians and share some evolutionary traits with frogs and toads, such as a similar facial structure and the need for a watery environment for reproduction. Unlike lizards that are purely terrestrial, salamanders are semiaquatic, meaning that they spend part of their lives in water, particularly for the purpose of reproduction.
Salamanders, like the marbled salamander, typically have a slender body, short legs, a long tail, and moist skin. While most have this general body plan, respiration among salamanders can vary. For example, some use lungs, others breathe through their skin or the lining of their mouth. In contrast, turtles have a hard shell for protection and are reptiles, living both on land and in water but not requiring water to reproduce as amphibians do.
Does a cell use energy when molecules diffuse in or out of the cell?
Why?
Answer:
There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.
Explanation:
The cell use energy when molecules diffuse as there are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.
What is diffusion?Diffusion has been defined as the process of passive transport in which a single substance would moves from an area of high concentration to an area of low concentration until the concentration has been equal on both areas.
Diffusion distance rate of diffusion depends on the distance molecules have to travel. The greater the diffusion distance needs to travel the longer it takes to move.The greater the distance that a substance must travel, the slower the rate of diffusion. Oxygen moves from the alveolus to the capillary through the respiratory membrane which means the thickness of the respiratory membrane is diffusion distance.
Therefore, The cell use energy when molecules diffuse as there are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.
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Identify the plant tissues in the three images.
DONE
Answer:
a. dermal
b. vascular
c. ground
next:
dermal, ground, vascular
Explanation:
did the assignment ;)
What can you infer about water in the air?
Water in the air contains contaminates.
Water in the air does not have contaminates.
Water in the air is very large.
Water in the air is very salty.
Answer:
I believe water in the air contain contaminates c:
Explanation:
Heat from the Sun causes water to evaporate from the surface of lakes and oceans. This turns the liquid water into water vapor in the atmosphere. Plants, too, help water get into the atmosphere through a process called transpiration! ... Water can also get into the atmosphere from snow and ice.
Final answer:
Water in the air contains contaminants because all naturally occurring water can absorb substances from the environment. Human activities and natural phenomena both contribute to the contamination of atmospheric water vapor.
Explanation:
Based on the information provided, we can infer that water in the air does contain contaminates. All naturally occurring water, including atmospheric water vapor, can absorb various substances from the environment, such as minerals, pollutants, and biological materials. As water is a good solvent, it easily dissolves materials it comes across, leading to the presence of contaminants. While environments can handle a degree of contamination, there is a threshold beyond which the contamination becomes harmful to health and ecosystems.
Pollution happens when contaminants are introduced into the environment at damaging levels. Water vapor in the air can be contaminated by human-induced pollution, such as industrial emissions, or by natural phenomena, like volcanic eruptions. It is our human activities – agricultural, industrial, and sewage treatment processes, among others – that have a significant impact on the quality of water in the environment. This holds true for the water in the air, as it is part of the global water cycle and is subject to the same contamination processes as surface and ground water.
What is defined as the body’s ability to protect itself from pathogens it is exposed to?
Answer:
Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens. You have beneficial bacteria growing on your skin, in your bowel and other places in the body (such as the mouth and the gut) that stop other harmful bacteria from taking over. Hope this kinda helped
Explanation:
How do the expected results differ from the observed results?
Answer:
an expected result is more of an eduacated guess while an obsvered result is done through test experioments and observation.
Explanation:
4. Different restriction enzymes cut the same DNA molecule into different
numbers of fragments, because different restriction enzymes have
a. different base pairs
b. different sticky ends
c. different restriction sites
d. different nucleotide sequences
Final answer:
Different restriction enzymes cut DNA at specific restriction sites, each with its own recognition sequence, leading to different numbers of DNA fragments.
Explanation:
Different restriction enzymes cut the same DNA molecule into different numbers of fragments because they recognize different restriction sites on the DNA sequence.
Each restriction enzyme is able to identify its specific recognition sequence, which is often a palindromic sequence of nucleotides, and cut the DNA there. This can result in varying numbers of DNA fragments with different sizes.
These fragments typically have either 'sticky ends' or 'blunt ends', depending on the manner in which the enzyme cuts the DNA.
These ends can be used to recombine the DNA fragments with complementary DNA sequences in processes such as molecular cloning and recombinant DNA technology.
6. In fossils, what anatomical evidence indicates that gills were present?
7. Many transitional species had gills which means that they lived in
8. Lungs allow an animal to breathe _____________. Why did this adaptation evolve?
9. Tetrapods use ____________ to breathe. Do any modern tetrapods have gills? Explain.
13. Most modern tetrapods have ___________ digits on front limbs and __________ digits on back limbs, although some species have fewer. How does this number compare to the number of digits on the limbs of transitional fossil forms?
14. Why do many of the transitional fossils between fish and tetrapods have flat heads?
15. How did the anatomy of the shoulder and head change during tetrapod evolution?
16. ___________________ and __________________ are fossil species have characteristics unique to fish as well as characteristics found in fish and tetrapods. Describe the characteristics of lobe-finned fish that are similar to those of tetrapods.
17. Which lobe-finned fish is alive today? ________________________
18. Acanthostega and Icythyostega have been called fish-like tetrapods. Explain why they are described as such and describe the environment in which they probably lived.
19. Why is Tiktaalik such an important transitional fossil?
20. __________________ and _____________________ are early tetrapods that do not have features
unique to fish. Describe how these two species differ anatomically and what that means about where they each lived.
Answer and explanation:
6. In fossils, what anatomical evidence indicates that gills were present?
The anatomical evidence found in the fossils, such as special bone structures in the shoulders and skulls to support the gills, allows us to know the existence of these structures in some ancient species.
7. Many transitional species had gills, which means they lived in aquatic environments.
Gills are structures which allow people to breathe underwater, and many evolutionary transition species had them, such as the Tiktaalik, which also had lungs.
The existence of gill and lung respiration is what leads us to think that transition species were the first to leave the aquatic habitat to become terrestrial tetrapods.
8. Lungs allow an animal to breathe air. Why did this adaptation evolve?
Species considered transitional between fish and land animals were equipped with both gills and lungs.
It is suggested that the appearance of the lungs is due to the lower concentration of oxygen in the water and the need to obtain oxygen from another source, such as air, where the oxygen concentration is higher. In these circumstances, increased oxygen demand forced some animals to leave the aquatic habitat.
9. Tetrapods use lungs to breathe. Do any modern tetrapods have gills? Explain.
Some present-day tetrapods - such as salamanders, toads and frogs - are amphibians, and in their larval stage they remain in an aquatic habitat, so they are equipped with gills during this stage of their life cycle.
In amphibians like the frog, the passage from the larval stage to the adult stage involves a process called metamorphosis, in which the gills disappear and the lungs develop, in addition to the appearance of the four limbs, which are absent in the larva.
13. Most modern tetrapods have five digits on front limbs and five digits on back limbs, although some species have fewer. How does this number compare to the number of digits on the limbs of transitional fossil forms?
The transitional species originally had fins, but fossils of the first tetrapods have been found with developed limbs and five or more digits, representing an equal or greater number of digits than current species.
An example of a larger number of toes is represented by the genus Acanthostega, with eight toes on each limb.
14. Why do many of the transitional fossils between fish and tetrapods have flat heads?
Many of the transition fossils between fish and tetrapods have flat heads, from top to bottom, because these species participated in the transition between aquatic and terrestrial habitat, adapted to living in shallower waters near the surface, and with gill and lung breathing capacity.
15. How did the anatomy of the shoulder and head change during tetrapod evolution?
The changes in the anatomy of the shoulder and head during the evolution of the tetrapod were basically three:
The bony skeleton of the shoulder is separated from the skull, which in aquatic animals was attached. The appearance of the neck, between both structures. Development of an independent movement of the skull, with respect to the shoulder and the rest of the body.16. Tiktaalik and Acanthostega are fossil species have characteristics unique to fish as well as characteristics found in fish and tetrapods. Describe the characteristics of lobe-finned fish that are similar to those of tetrapods.
Lobe-finned fish -called sarcopterygians- like dipnoi, are lungfish, given the existence of functional lungs in their body. Another characteristic of lobefish is that each of their fins is attached to a single bone, as in the case of the humerus and femur of mammals.
The existence of lungs and the attachment of the limbs to a bone are common features among lobed finfish and tetrapods.
17. Which lobe-finned fish is alive today?
The coelacanth is one of the oldest species of fish that exist, as they are lobe-finned fish that were thought to be extinct, but still exist.
The characteristic of possessing lungs and bony skeleton relates them to the actual lung fishes and to the terrestrial vertebrates.
18. Acanthostega and Icythyostega have been called fish-like tetrapods. Explain why they are described as such and describe the environment in which they probably lived.
Both the Acanthostega and the Icythyostega were animals characterized by having four extremities and be equipped with gills and lungs at the same time, which determines that they are called tetrapods similar to fish.
Their characteristics made them suitable for living in aquatic and terrestrial environments, so they probably inhabited shallow waters or even the surface of the earth.
The origin of the fish from the tetrapods has been detected with the fossils and their study.
In fossils, the anatomical evidence indicating that gills are present has been the bone structure in the shoulder and skull to support gills.The transitional species having gills have been the indication that they live in an aquatic environment and utilize gills for respiration.Lungs allow the animals to breathe in air. The adaptation has been evolved as there has been to deal with the concentration difference of oxygen in air and water.Tetrapods use lungs to breathe. The tetrapods living in the larval stage in aquatic conditions have been equipped with gills.Most modern tetrapods have five digits on front limbs and five digits on back limbs, although some species have fewer. The fossils at the later stage of the development have been found to be equipped with an equal number of limbs.Many species have transition fossils as the intermediate has been the developmental phase of the fish and tetrapods.While the development from the tetrapod, the shoulder has been detached from the skeleton with the development of the neck. Free movement has been facilitated.Tiktaalik and Acanthostega are fossil species that have characteristics unique to fish as well as characteristics found in fish and tetrapods. The characteristic similar to the lobe fish and the tetrapods has been the presence of the gills.The characteristic presence of the lungs and the body skeleton in the lobe-finned fish supports their existence.Both the organisms have the presence of characteristic gills and fins similar to the fishes.Tiktaalik characteristics are unique to fish as well as characteristics found in fish and tetrapods.Pederpes and Tulerpeton are the early tetrapods that do not have features unique to fish.For more information about the fossils, refer to the link:
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These beetles have a uniform distribution. In year 1, how many beetles are there per hectare? How many beetles per hectare were there in the year the beetles reached carrying capacity? Round up or down to the nearest whole number, if necessary.
Answer: In year 1, the population was 11,500 spread over 115 hectares.
The number of beetles per hectare is beetles.
By year 6, when the beetles reached the carrying capacity, the number of beetles per hectare is beetles.
Explanation:
Answer:
In year 1, the population was 11,500 spread over 115 hectares.
The number of beetles per hectare is beetles.
By year 6, when the beetles reached the carrying capacity, the number of beetles per hectare is beetles.
Explanation:
Edmetum