Answer:
Archaebacteria and Eubacteria are the only living organisms that do not have Nucleus as they are prokaryotic cells.
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_______________ form the base of the marine food web.
a. zooplankton
b. phytoplankton
Answer:
B
Explanation:
The yellow ring inside the bacterial cell represents the bacterial DNA. Why does this structure disappear by step 3(this is when replication of viral nucleic acid and protein and envelope.) of the lytic cycle?
Answer:
When the virus injects it’s nucleic acid into the cell it uses the cell’s ribosomes to make virus proteins and those proteins are the main cause for the break up of the cell’s DNA.
The bacterial DNA structure will disappear because of ; The usage of the ribosomes of the bacterial cell by the nucleic acid injected by the virus.
The lytic cycle which is one of the cycles of viral reproduction is the cycle which leads to the breakup of the DNA of the cell ( i.e. destruction of the host cell and its membrane).
Therefore the yellow ring inside the bacterial cell will disappear by step 3 after which the nucleic acid is injected into the host cell by the virus .
Hence we can conclude that the bacterial DNA structure will disappear because of the usage of the ribosomes by the nucleic acid from the virus
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A gene mutation is a change in the sequence of nucleotides that occurs during cell replication (mitosis and meiosis) within a single coding section of DNA. Mistakes can also occur in the transcription of mRNA or the translation of a polypeptide. However, these changes are not considered to be mutations, because they are not permanent changes to the cell. Explain why "mistakes" in transcription or translation are not as serious as mutations in a gene.
Answer:
The cell has an elaborate mechanism in place that check for and correct the mistakes that happen during replication, transcription or translation. This process is called as proofreading. The incorrect nucleotide added during replication cause the replication to be halted for a while. The DNA polymerase enzyme fixes the error and replication then resumes as normal.
Gene mutation, on the other hand, is a permanent change in the DNA sequence that might lead to cancer.
Hope that answers the question, have a great day!
Carbon in the ocean originates from the atmosphere.
lease select the best answer from the choices provided
true or false
Answer:
true
Explanation:
Carbon in the ocean originates from the atmosphere; that is true as the carbon in the ocean's main source is the atmosphere, where carbon dioxide (CO2) dissolves into the surface waters of the ocean through a process called gas exchange.
What is the role of carbon ?Carbon is an essential element for life on Earth, and it cycles through various reservoirs such as the atmosphere, ocean, land, and biosphere, the ocean is a major carbon sink, meaning it stores large amounts of carbon. But carbon dioxide is a greenhouse gas that is naturally present in the atmosphere, and its concentration has increased significantly over the past century due to human activities such as burning fossil fuels that harm all living organisms.
As a result, carbon in the ocean comes from the atmosphere; this is true.
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An essential material for photosynthesis is/are:
a. nitrogen
b. chlorophyll
c. chloroplasts
Answer:
B
Explanation:
i did this two months ago and its the only one i remember
what is the best example of a community
A good community is a cohesive, safe, confident, prosperous and happy place. It is free of poverty and crime, providing a high quality of life for everyone that lives there. It values and promotes open, participative development processes underpinned by a continuous culture of trans-generational learning.
How can changes in trophic levels affect an ecosystem’s health and stability?
Answer:
Trophic levels are part of an energy cascade that allows for energy consumption, conservation, and retention.
Explanation:
By altering trophic levels in an ecosystem, there is shift between the readily energy available within one specfic trophic system. If you remove wolves, for instance, normal prey could increase en-masse. In this way, the removal of wolves allows for an energy expansion that increases and accelerates the growth of that prey species. In their growth, they attain their energy from elsewhere, say specific plants off which they eat.
In an ecosystem a population can be defimed as
Answer: In an ecosystem, a population is a group of animals that live in the same area and are the same species. For example, a herd of zebras would be a population, but a horse would not be considered apart of the population because it is a different species than the zebra. (a species are animals that can mate and produce offspring that can also mate).
what is job of sperm cells?
Answer:
The function of a sperm is to pass on the necessary biological information required to produce a new organism
Phytoplankton can gain nutrients from whale poop.
True
False
Answer:
True
Explanation:
Researchers believe rebuilding populations of great whales could significantly increase the vast amount of atmospheric carbon absorbed by tiny marine algae called phytoplankton, which rely on nutrients from the leviathans’ fecal plumes.
(bbc word news)
Answer:
true
Explanation:
What happens if a cell in our body dies (replacement and repair)?
Answer:
If a cell in our body dies ( replacement and repair ) then it can cause individual cell death and if sufficient cells are lost, the result can be tissue or organ failure, ultimately leading to death of the organism.
Explanation:
Answer:
Cell Damage and Tissue Repair. Toxic damage to cells can cause individual cell death and if sufficient cells are lost, the result can be tissue or organ failure, ultimately leading to death of the organism. ... Physical agents such as heat and radiation may damage a cell by coagulating their contents (similar to cooking).
Explanation:
7. A type of cell division that results in diploid cells: [meiosis / mitosis
Answer:
Mitosis
Explanation:
Mitosis is a cell division process. The 2 cells created are exactly the same, and they have the same number of chromosomes. The result is two, identical, diploid daughter cells. Diploid means that there is 2 complete sets of chromosomes, and one complete set of chromosome pairs.
Meiosis is another cell division process, but the cells created are different from those in mitosis. There are 4 cells created, not just 2. Additionally, the cells produced are not identical. There is variation in the genetics of the daughter cells. This process creates haploid cells, meaning there is only 1 complete set of chromosomes, or half of a complete set.
Therefore, the cell division that results in diploid cells is mitosis.
The type of cell division that results in diploid cells is mitosis. Mitosis is a fundamental process in which a single cell divides into two identical daughter cells, each containing the same number of chromosomes as the parent cell.
The daughter cells produced through mitosis are genetically identical to each other and to the parent cell. Mitosis is involved in the growth, repair, and maintenance of tissues in multicellular organisms. It ensures that the body's cells retain the same genetic information and have the appropriate number of chromosomes (diploid) characteristic of the species. In contrast, meiosis is a specialized type of cell division that results in the formation of haploid cells, which have half the number of chromosomes as the parent cell.
Therefore, the type of cell division that results in diploid cells is mitosis.
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Leah, LaRenda, and Gabi decide to test what factors influence water
absorption by an egg. They remove the shell from 3 eggs by dissolving
them in vinegar. They create three different water solutions. One is pure,
100% distilled water, a second is 50% water/50% corn syrup, and the third
is 100% corn syrup. The mass of each egg is measured before they are put
into a single solution for 24 hours. The mass of the eggs is then measured,
and the data recorded below: Based on the data this group gathered, the
most appropriate hypothesis would be
Answer:
how long well that take
In this experiment, the independent variable they are testing is the type of solution in which the egg is placed.
What is the independent variable?In the data, the independent variables are the factors that do not depend upon the other factors, on the other hand, dependent variables depend on independent variables.
In the experiment they used three different solutions ate three different water solutions. One is pure, 100% distilled water, a second is 50% water and 50% corn syrup, and the third is 100% corn syrup, all are three independent solutions.
The independent variable is the cause which does not depend on any other factor in your study, all the solutions are different mixtures creating different variables.
Therefore, the solutions used for eggs are the independent variable.
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The given question is incomplete, so the most probably the complete question is,
Leah, LaRenda, and Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours. The mass of the eggs is then measured, and the data is recorded below:
In this experiment, the independent variable they are testing is?
Could two parents with cleft-chin have a child without cleft-chin?
Answer:Cleft chins were believed to be a dominant trait: if two parents had cleft chins, their kids could have a cleft or might not But it turns out a cleft chin is too complicated to be simply dominant. Two parents without a cleft have kids with cleft chins way more often than predicted with this simple model.
Explanation:
Answer:
A
B
Explanation:
:))))))))
Which organisms does the mouse in the food web provide energy for?
a. deer and snake
b. hawk and coyote
c. grasshopper and snake
d. butterfly and hawk
Answer:
The answer is B.
Explanation:
In this food web, you can see that snake, coyote and hawk feed on mouse in order to get energy.
help?
Which list correctly orders the forms of radiant energy by increasing
wavelength?
A. infrared light, radio waves, ultraviolet light, visible light
B. visible light, ultraviolet light, radio waves, infrared light
C. radio waves, visible light, ultraviolet light, infrared light
D. radio waves, infrared light, visible light, ultraviolet light
Answer: Option D.
radio waves, infrared light, visible light, ultraviolet light.
Explanation:
Radiant energy is energy electromagnetic radiation that travels by waves or particles. It is measure in Joule. There are different type of electromagnetic radiation and they are defined by the amount of energy, photons and wave lengths.
Radio waves have photons with low energies and wavelengths, microwaves have little, infrared waves have more than the two, ultraviolet have more, x rays have more energy photons and wavelengths, then gamma rays have more.
what are the forelimbs of a chimpanzee adapted for?what are they adapted for in humans
Answer:
Chimpanzees, the closest living relatives to modern humans, developed numerous adaptations to survive. Their large brains enable complex decision making, social skills, and tool making. Their body adaptations allow for grasping, propulsion and climbing.
Explanation:
Explanation:
The forelimb of a chimpanzee is adapted for climbing trees and swinging fr branch to branch.
The forelimb of a human is adapted for grasping associated with opposable thumb.
what activities are ways to reduce the negative impacts humans have on earths resources? select two options.
eroding river banks
moving to urban settings
monitoring air quality
burning fossil fuels
building marine refuges
Answer:
monitoring air quality and building marine refuges
The activities that reduces the negative impacts humans have on earths resources are :
Monitoring air quality ( C ) Building marine ( E )Human activitiesActivities of humans leave both negtive and positive effects on the earth and but to reduce the negtive impacts of humans on earth certain activities such as monitoring air quality which helps to regulate air pollution and also building marine refuges are some the positive human activity that can help reduce the negtive effects of certain human activity.
Hence we can conclude that The activities that reduces the negtive impacts humans have on earths resources are : Monitoring air quality and Building marine.
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The presence of branchial clefts in a human embryo suggests
100 POINTS! CORRECT ANSWER GETS BRAINLIEST! Study the image of chromosomes in a human cell. Do the chromosomes in this image belong to a female or a male? Autosomes and Sex Chromosomes You may have noticed in the image of chromosomes in a human cell that all of the chromosome sets are labeled with a number except one set, which is labeled with X and Y. Together, chromosome pairs 1 through 22 makes up your autosomes, which are chromosomes that contain genes for characteristics not directly related to the sex of an organism. Most sexually reproducing species also have sex chromosomes that directly control the development of sexual characteristics. Humans have two very different sex chromosomes: X and Y. In all mammals, including humans, an organism's sex is primarily determined by the XY system. An organism with two X chromosomes is female. An organism with one X and one Y chromosome is male.
Answer:
Male
Explanation:
Large-scale evolutionary trends are the result of _____.
-artificial selection
-macroevolution
-phenotypic variation
-microevolution
Answer:macroevolution
Explanation:
Answer: b. macroevolution
Explanation: gradpoint/pearson
Which of the following is NOT an example of mechanical digestion? MULTIPLE CHOICE.
A. Amylase breaking down starch in the mouth
B. Churning of food in the stomach
C. Segmentation of food in the small intestine
D. Chewing of food in the mouth
Answer:
C segmentation of food in the small intestine
Explanation:
mechanical digestion occurs only in the mouth and that is the only one that does not occur in the mouth.Even though Both mechanical and chemical digestion occur in the mouth. ... The muscles in the stomach walls churn the bolus (mechanical), allowing it to mix with digestive enzymes and gastric acids (chemical). This process converts the bolus into a liquid called chyme. Digestion continues in the stomach for several hours. so c is the answer
Ends at a stop codon
A. Transcription
B. Translation
C. Replication
Answer: The answer is B, translation
how are the inorganic and organic fertilizers important in agriculture?
Answer:
It helps grow food and large amounts of it to feed the nation!
Explanation:
Fertilizer maintains the soil fertility, so the farmer can continue to grow nutritious crops and healthy crops. Farmers turn to fertilizers because these substances contain plant nutrients such as nitrogen, phosphorus, and potassium. Most farmers today use fertilizers that are either mined or manufactured.
Answer:
In addition to releasing nutrients, as organic fertilizers break down, they improve the structure of the soil and increase its ability to hold water and nutrients. Over time, organic fertilizers will make your soil–and plants–healthy and strong.
Explanation:
Which best describes reproduction?
Answer:
A sexual reproduction produces offspring that are identical to the parent. Sexual reproduction allows for diploid gametes to combine to increase genetic variation.
Catching fish faster than they can breed is called: A. Intertidal zone B. Tilapia C. Overfishing D. Catch-release
Answer: its C
Explanation: overfishing
Answer:
The answer is Overfishing (Aka C)
Explanation:
According to cell theory which is made of cells
Answer:
All units of life
Explanation:
Answer:
All living things.
Explanation:
Find an everyday product in your home that has at least some synthetic materials. Write a paragraph tracing its lifecycle.
(I don’t care what the product is, the paragraph can have a minimum of 5 sentences.)
Answer:
The everyday product in my home having synthetic material is non-stick pans. it is used in everyday for cooking purpose. The modern non-stick pans have a coating of Teflon (PTFE or polytetrafluoroethylene) and teflon is a synthetic fluoropolymer. it is constitute of many strong carbon-fluorine bonds which allow it resistant to solvents.
The average lifecycle of non-stick pan is five years and your its last days will be seen when the surface starts to peel. It is advice to change the non-stick cookware after few years as it can affect the food and health of a person.
The preserved remains of trilobites suggest that these organisms lived in the seas for about 380 million years. They also indicate that all trilobites originated in Siberia and then branched out to different locations.
This information is and example of which form of
evidence for evolution?
A. comparative anatomy
B. fossils
C. embryology
Can someone please fill in the chart correctly.