Answers
Answer:
(i)
x= nucleus
y= chloroplasts
z= vacuole
(ii)
1) an animal cell does not contain a vacuole but a plant cell does
2) a plant cell contains chloroplasts but an animal cell does not
Related Questions
Question 2
Taking antibiotics for viral infections has no positive impact on individual health because
viruses are not killed by antibiotics. What negative impact does the unnecessary use of
antibiotics have on public health?
Answers
Answer:
Antibiotic Resistance
Explanation:
Antibiotic Resistance is when bacteria mutates or adapts to become resistant to antibiotics, wether by protecting the bacteria itself or limiting how the antibiotics can effect the body. This antibiotic Resistance can happen from using too many antibiotics, or using antibiotics but not having a high enough dose (so all the bacteria isn't killed). This can cause much more serious infections, like pneumonia and meningitis, to happen, and they can last longer, as they may not immediately respond to treatment. These can also spread to people who don't have a problem with antibiotic Resistance, but will get the antibiotic resistance bacteria which can mess with the other bacteria in their body, making them antibiotic resistant, which turns into a cycle of spreading bacteria and becoming resistant.
The original source of genetic variation that serves as the raw material for natural selection is:.
Answers
Answer:
Mutation
Explanation:
what is the difference between mitosis and cytokenisis
Answers
Answer:
Mitosis refers to the division of a cell's nucleus into two. Cytokinesis refers to the further division of the cytoplasm of the cell, forming two daughter cells.
Explanation: I hope this helps :)
Explanation:
The Mitosis Phases
Mitosis itself is the division of the nuclei into daughter nuclei. It includes five phases of its own.
Prophase: Here, chromosomes become more condensed in the nucleus, and the nuclear membrane dissolves. The mitotic spindle forms from the centrioles, which have split and moved to opposite poles (sides) of the cell. This spindle is made of proteins in the form of microtubules.
Prometaphase: In this step, the chromosomes migrate toward the center of the cell. They are propelled by the mitotic spindle apparatus attached at the centromeres that joins sister chromatids. They begin to approach a line perpendicular to the direction they are moving, through their centromeres, called the metaphase plate.
Metaphase: In this step, chromatids align precisely along the metaphase plate via their centromeres, with one sister chromatid on each side of the metaphase plate.
Anaphase: In this step, the sister chromatids are pulled to opposite poles of the cell, releasing from each other at the centromere. The spindle fibers, again, are responsible for this motion.
Telophase: In this step, daughter nuclear membranes form around the newly formed daughter nuclei. At this point, chromatids are unpaired, as this generation's chromosome replication has yet to start. This is because cell division is not quite complete.
Cytokinesis
To define cytokinesis as a stand-alone phase, the difference between telophase and cytokinesis is best imagined by thinking of telophase ending the instant both daughter nuclear membranes are completely formed. Cytokinesis starts with a "pinching inward" from the top and the bottom of the cell, with one daughter nucleus on each side.
This "pinching" results from the formation of a protein structure called the contractile ring, which runs around the widest part of the cell under the membrane. When this shrinks inward, it pulls the membrane tighter along with it until the cell halves are completely separated by the now-finished "pinch."
I hope it will help
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At which position is the northern hemisphere experiencing spring?
Image shows the position and tilt of Earth in its orbit around the sun. Earth is tilted away from the sun in position A. In position B, the sun shines evenly on Earth from pole to pole. Earth is tilted toward the sun in position C. In position D, the sun shines evenly on Earth from pole to pole. (Image attached!)
Point A
Point B
Point C
Point D
Answers
Answer:
B
Explanation:
The Earth is tilted 23.5 degrees on its vertical axis. During the northern hemisphere's spring and summer, the northern hemisphere is tilted towards the Sun.
Please help will give brainliest and 20 points :)
Answers
Answer:
7. A and D are the most similar meaning they have similar DNA.
8. B and E will have the mutated gene that causes baldness.
Explanation:
The human body consists of four main types of tissue. These tissues are described in the chart below.
Answers
Answer:
B
Explanation:
The four main cell groups in the body are different shapes and sizes to fit the unique job they are made to do
ex. nerve cells are smaller and longer compared to epithelial cells
Which of these shows the levels of organization in the correct order from smallest to largest?
A. cells, organs, tissues, and organisms
B. cells, tissues, organs, and organ systems
C. cells, tissues, organisms, and organs
D. tissues, organs, cells, and organ systems
Answers
Answer:
B
Explanation:
cell is the first organization level
tissue is the second level
organ is the third level
organ systam is the fourth level
organsim is the last organization level
Answer:
B. cells, tissues, organs, and organ systems
Explanation:
Which component of a virus is injected into a cell? ribosome nucleic acid protein capsid mitochondrion
Answers
The component of a virus which is injected into a cell is nucleic acid because these are the building blocks of genetic material such as DNA or RNA.
What do you mean by Virus?A Virus may be defined as an infectious agent that can only duplicate its copy inside a host organism.
Nucleic acids are responsible for the synthesizing of genetic material which gives all the information associated with genes and gene products.
Therefore, the component of a virus which is injected into a cell is the nucleic acid.
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Answer:
B. Nucleic acid
Explanation:
Edge '23
What will the overall charge of an atom be if it has more protons than electrons?
A:neutrally charged
B:negatively charged
C:ionically charged
D:positively charged
Answers
Answer:
D
Explanation:
A: Neutrally charged atoms have the same number of protons and electrons.
B: Negatively charged atoms have more electrons than protons. These are also called anions.
C: ironically charged is a molecule that has a charge so a cation or an anion. This option isn't correct becuase it's not specific enough for the question. An ion can be positively charged (cation) or negatively charged (anion).
Choose the stage that best matches the description given.
Ants, mites, and beetles frequent the body in warmer climates.
After day 50
Days 26-43
Days 3-17
• Day
• Day 2
• Days 18-25
Answers
Forensic entomology identifies the fauna on a dead body to make predictions about the death. C) ants, mites, and beetles frequent the body 3-17 days after death.
What is forensic entomology?Forensic entomology is the forensic branch that studies the cadaveric fauna associated with a dead body to make scientific conjectures.
Cadaveric fauna usually includes different forms of invertebrate species and their stages of development. There is a predictable sequence in which different species arrive at the dead body and inhabits it, and this sequence depends on the time the individual has been dead and the decomposition state of the body.
The species inhabiting the body and their developmental stage can be used as significant data to estimate the time of death, the region, and the circumstances under which the individual died.
Stages of decomposition depend on the region, but we can make this generalization,
1-3 days ⇒ adult flies and eggs, and a few larvae
3-5 days ⇒ bacteria and other microorganisms act. The decomposing body produces gasses that inflate the carcass. Larvae penetrate the body, release the gasses, and the carcass collapses.
5-15 days ⇒ Maggots, flies, ants, and beetles have already reached the dead body.
15-25 days ⇒ Most flesh is already consumed, and the body is in the advanced stage of decay. Although the number of invertebrates is low, the diversity of species is great. There are carpet beetles, ants, skipper flies, and mites.
25-50 days ⇒ Almost dry body with no flesh. Some arthropods are still feeding on it.
>50 days ⇒ Bones
Note: Remember that these are approximations and might vary according to the region and environmental conditions, such as temperature, precipitation, humidity, etcetera.
According to this information, we can say that ants, mites, and beetles frequent the body in warmer climates between 3 and 17 days. Option C.
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Which does NOT cause an increase in carbon dioxide in the atmosphere 2b
O burning fossil fuels
O deforestation
O driving more cars
O using solar energy to heat a home
DO NOT ANSWER IF YOU DONT KNOW THE ANSWER THANKS!
Answers
Answer:
O deforestation
Ex: an increase in the carbon dioxide content in the atmosphere it will not cause the abundance of the desert plants right
The wrasse, a small marine fish, periodically cleans harmful parasites from the
mouth and body of the moray eel. The moray, in turn, protects the wrasse from
larger predators and provides it with a constant supply of food. This is an
example of the type of relationship known as
Answers
This is an example of the type of relationship known as mutualism.
Feeding relationship between organismsThere exists various types of feeding relationships among living organisms which include:
competition, predation, commensalism, mutualism and parasitism.Mutualism is the type of feeding relationship whereby two organisms of different species work together in such a way that both benefits from each other.
Thus, the wrasse removes harmful parasites from the moray eel while the moray eel in turn protects the wrasse from predators.
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Most recently, the classification of life on Earth was changed. The research leading to this change is also the same research that provides further evidence of Darwin's theory of natural selection. What was the basic technique used to produce this most recent evidence?
A) radioisotopic dating
B) biochemical analysis
C) paleontology and fossil evidence
D) biogeography: the study of living things around the globe
Answers
Answer:
B. biochemical analysis
Please help me!
Which example shows the inherited behaviors of a bird?
A. Building a nest and hunting
B. Chirping and migrating
C. Hunting for food in groups
D. Migration and building a nest
Answers
Answer:
i would say A
Explanation:
If they don't be on the nest where will they live
Answer:
D.
explanation:
The length of daylight, or changing the ratio of daylight to darkness, as well as temperature, triggers the instinct to migrate. building is learned or instinctive behavior. it is primarily instinctive.
Another thing is I got it right on my test, hope this helped!
Bacterial resistance to common antibiotics has been occurring over the last fifty years. Many antibiotics, like ampicillin, were effective in treating many bacterial infections but are not becoming significantly less effective. In order for a medical doctor to be able to explain to the patient why the same antibiotic can no longer be used to treat a similar infection, the doctor attempts to explain natural selection to the patient. Evaluate which of these components would be appropriate to include in the explanation to the patient and select ALL that apply.
A)The bacterial resistance includes all antibiotics.
B)The bacterial resistance to the antibiotic is genetic in origin.
C)The bacterial resistance to the antibiotic can be passed on to offspring.
D)The bacterial resistance to the antibiotic is because of an insufficient dose of antibiotic.
E)The bacterial resistance is the result of differential survival of a population of bacteria when exposed to the antibiotic.
Answers
Answer:
B, C, & E
Explanation:
just took the USATestprep
How common are food spoilage microorganisms? Multiple Choice A few of our foods contain them. Almost none of our foods contain them. Almost all of our foods contain them. They are extremely rare.
Answers
Answer:
almost all of our food contain them .so answer is option C
Explanation:
Almost all of our foods contain food spoilage microorganisms.
What are food spoilage microorganisms?When there is an unpleasant change in the meal's usual state, food spoiling develops. This could be a modification to the way the meal looks, feels, tastes, or smells. The usual culprits for spoilage are bacteria, molds, or yeasts. The appearance of green fuzzy spots on a piece of bread is a classic sign of rotting.The most common bacteria linked to spoiling include Lactobacillus spp., Carnobacterium spp., Lactobacillus spp., and Brochothrix thermophacta. The primary spoilage organisms in cultured foods like yogurt, sour cream, and buttermilk are yeasts and molds. Butter can become spoiled by yeasts, molds, and Pseudomonas bacteria. Butter is more prone to surface mold growth than bacterial deterioration because of its high fat content and low water activity.learn more about food spoilage microorganisms here: https://brainly.com/question/17966536
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Which study type of natural selection did grants observe when studying the beak size of galápagos finches
Answers
Grants study the type of natural selection on break size of Galapagos finches.
Grant study on Galapagos?Peter Grant and Rosemary Grant studied Darwin's finches. They observed evolution by natural selection on Galapagos finches which occured during drought . Birds with bigger beaks tend to survived and reproduced because they adapt well and can eat different types of seeds at all sizes of seeds, whereas small-beaked birds could only eat small seeds. while birds with smaller beaks could not survive well.
Therefore, Grants study the type of natural selection on break size of Galapagos finches.
Learn more about Grant study on Galapagos finches below.
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A real case where RFLP was used.
Answers
Answer:
Alec Jeffreys and the Pitchfork murder case: the origins of DNA profiling
British geneticist Alec Jeffreys began working in 1977 on a technique that could identify individuals through samples of their DNA. In 1984, he and colleagues devised a way to use a newly discovered property of DNA, isolated areas of great variability between individuals called restriction fragment length polymorphisms (RFLP), for forensic identification—the original DNA fingerprint.
In 1986, police asked Jeffreys for help in finding a man who had raped and killed two girls. DNA tests exonerated the primary suspect. Through a genetic dragnet, police found the perpetrator, Colin Pitchfork, who gave himself away when he asked a friend for a substitute blood sample.
Within a year, genetic fingerprinting was making the unique molecular structures of victims and suspects visible in criminal investigations around the world. Today, RFLP-based DNA analysis is being supplanted by newer techniques of genetic identification.
Explanation: .
Cactus finches have long, pointed beaks. Say the only source of food for Cactus finches is cactus flowers. If a plant disease killed a large portion of the cacti on the Galapagos islands, how would the population of Cactus finches change
Answers
The population of the Cactus finches suddenly experiences a decline when a large portion of the cacti on the Galapagos islands was killed by a disease.
What do you mean by Population?A population may be defined as the number of individuals of the same species living in a particular area at a given time.
Cactus finches only depend on the cactus flower as a food source, and if these flowers were killed by a disease, the cactus finches do not get enough food to survive and reproduce, hence their population may fall rapidly.
Therefore, the population of the Cactus finches suddenly experiences a decline when a large portion of the cacti on the Galapagos islands was killed by a disease.
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Answer:
For the Biological Evolution Unit Test, the answer is The population of Cactus finches would decrease because there would be more competition for food.
Hope this helps!! :)))
1.Do all organisms consume the same type of
food?
2.Are humans amphibians?
Answers
Answer:
No.1 - all living beings do not need the same kind of food. Some animals eat only plant products called as herbivores. ... Some other animals eat both plants and animals called omnivores
No.2 - : Humans aren't amphibians
Explanation:
Humans are mammals they give birth to live young and feed them with milk produced by their
The result of the following cross indicates that the genotype of the female parent is _____.
Answers
Answer:
The result of the following cross indicates that the genotype of the female parent is- bb
3. How do you know this? (Quote some results to support your conclusion.)
Answers
Which is a correct definition of carrying capacity?
A
the largest number of different species that a particular habitat can support indefinitely with the resources available
B
the smallest number of different species that a particular habitat can support indefinitely with the resources available
C
the largest number of individuals of a certain species that a particular habitat can support indefinitely with the resources available
D
the smallest number of individuals of a certain species that a particular habitat can support indefinitely with the resources available
Answers
Answer:
C
Explanation:
the largest number of individuals of a certain species that a particular habitat can support indefinitely with the resources available
In complete sentences, summarize the relationships between population size of wolves and bunnies.
Answers
Answer:
As the wolf population grows, the pace of expansion of the rabbit population slows and ultimately declines. The wolf population grows slowly at first, then declines as the rabbit population declines.
Explanation:
Which of the following abiotic factors are used to
define terrestrial biomes?
Select one:
a. vegetation only
b. rainfall and temperature
c. altitude and rainfall
d. altitude and temperature
e. altitude and vegetation
Answers
Answer:
I believe the answer is B. Rainfall and tempature.
Explanation:
They are both main factors or terrestrial biomes.
if yall dont know a answer and give the wrong answer, what are you going to to?
A) Still answer it
B) try to solve the problem on paper
C) not answer it
D) spam random letters
Answers
Answer:
try to solve it on a paper
What kind of traits are selected for? Why are some traits selected for while others are not?
Answers
2. Monster shape: Round is dominant (Y) Square is recessive (y)
yy father and yy mother
What shape(s) are the parents?
What shape(s) are the children?
Will give brainliest
Answers
Answer:
round
Explanation:
chart
yy yy
yy yy
the result will be yy recessive so it will be round
What would happen to a single-celled life form if the information handed down to offspring was always copied perfectly? (Select all that apply.)
Answers
For a single-celled life form that the information handed down to offspring, we would see every generation would be a carbon copy of the one single-celled life form.This is further explained below.
To find the completion we need to know more about a single-celled life
What would happen to a single-celled life form if the information handed down to offspring was always copied perfectly?Generally, A single-celled organism, also known as a unicellular organism, is an organism made up of only one cell.
In conclusion, Every generation would be a carbon copy of the one before it.
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What sense organs are located on the head and in the mouth.
Answers
Answer:
Ears, mouth, eyes, nose, and tongue.
Explanation: