Answer:
Mutations can occur from the following ways:
1. Errors that occur in DNA replication during cell division
2. Exposure to high-energy electromagnetic radiation
3. Exposure to chemicals mutagens
Effects of mutation include:
1. Genetic disorders
2. Cancers
Explanation:
A mutation is a change or alteration that occurs in the DNA sequence of a cell of an organism. These mutations can be passed on to offsprings of that organism. Mutations can occur from the following ways:
1. Errors that occur in DNA replication during cell division: during the process of cell division, the DNA in cell are copied many times. Some errors result when copying DNA, most of which are corrected during proofreading. However, some changes in the DNA sequence may not be corrected, thus resulting in a mutation.
2. Exposure to high-energy electromagnetic radiation: some types of electromagnetic radiation are ionizing, such as UV rays and X-rays. Prolonged exposure to these ionizing radiation may result in permanent damage to parts of the DNA, thereby resulting in a mutation.
3. Exposure to chemicals mutagens: mutagens are substances which are able to cause mutations. Some common chemical mutagens are alkylating agents such as ethylmethane sulfonate and N-methyl-N-nitrosourea.
Effects of mutation include:
1. Genetic disorders: in genetic disorders, certain normal functioning of the body processes are impaired. For example, hemophilia whereby blood lacks the ability to clot normally resulting in excessive bleeding.
2. Cancers: cancers occur when the cell of the body differentiate and grow abnormally. Various types of cancers include breast cancer, prostrate cancer, blood cancer etc.
With respect to energy, Earth is a........
closed system
Integrated system
layered system
open system
Summarize the three main reasons why energy is wasted at each trophic level. (use your own words)
Answer:
Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. ... A food chain can usually sustain no more than six energy transfers before all the energy is used up.
please help answer the question depicted above
(the subject is earth science)
Which statement identifies an example of a genetic factor that could influence the growth or development of an organism created by an environmental factor? the lack of available sunlight for a small sapling to grow an increased amount of rain causing flooding in a local river fertilizer creating a mutation among a farmer's crops overcrowding of a local deer population resulting in fewer resources available
Answer:
fertilizer creating a mutation among a farmer's crops
Explanation:
A genetic factor is one that affects the gene or genome of an individual organism. This genetic factor often influences the observable trait called PHENOTYPE of the organism. In this case, an example of a genetic factor that could influence the growth or development of an organism created by an environmental factor is the "fertilizer creating a mutation among a farmer's crops"
The fertilizer represents the environmental/chemical factor which is creating the genetic factor (mutation) that will eventually influence the growth or development of the crops.
ACT GCA TTA- what is the complementary DNA strand?
A paper airplane thrown hard has _______ then one thrown lightly.
A. less gravity
B. less thrust
C. more thrust
D. more gravity
Traditional chemotherapy drugs target cell processes that then halts cell division or results in cell death. Thus, these drugs are cell poisons, causing multiple side effects. List some of the cell processes that these Drugs often target
Answer:
Cell division
Replication
Explanation:
Traditional chemotherapy drugs target cell metabolic processes which enabled it to thrive under certain conditions and then halts such processes such as cell division or results in cell death.
Thus, these drugs are cell poisons, causing multiple side effects. Some of the other cell processes that these cells target also include replication and motility.
Why is DNA in the world?
Answer: Nine years ago I jumped at an opportunity to join the international team that was identifying the sequence of DNA bases, or “letters,” in the genome of the common chimpanzee (Pan troglodytes). As a biostatistician with a long-standing interest in human origins, I was eager to line up the human DNA sequence next to that of our closest living relative and take stock. A humbling truth emerged: our DNA blueprints are nearly 99 percent identical to theirs. That is, of the three billion letters that make up the human genome, only 15 million of them—less than 1 percent—have changed in the six million years or so since the human and chimp lineages diverged.
Evolutionary theory holds that the vast majority of these changes had little or no effect on our biology. But somewhere among those roughly 15 million bases lay the differences that made us human. I was determined to find them. Since then, I and others have made tantalizing progress in identifying a number of DNA sequences that set us apart from chimps.
An Early Surprise
How can a shortage of nutrients harm organisms in an ecosystem? How can an excess of nutrients harm organisms in an ecosystem? Give an example of each scenario to support your answers.
Answer:
Explanation:
Shortage of nutrients in an ecosstem can harm an organism because when nutrients are scarse or very limited for organism and did not meet up with the organism requirements, there will be reduced metabolism and this can cause malfunction. Shortage of nutrients can lead to decline in growth and can lead to spring up of some diseases in the organism because enough nutrients us not available for good metabolic processes and fight diseases.
For example when an organism is deficient in vitamins and carbohydrates, the organism will not have energy to power metabolic processes and for it's activities and vitamins deficient will make the organism not to have the ability to fight against disease.
Too much of nutrients also affect organisms negatively. When there is much build up of nutrients, it can be harmful to the organisms and restrict metabolic processes.
For example too much of nutriwnts like too much of fat can block blood artieries and veins and thus can lead to inability of blood to flow .
What is the smallest living organism on Earth?
Answer:
Nanoarchaeum equitans
Explanation:
i hope this help
List the structure(s) that form the boundary between the inside and the outside of each cell in
Model 2.
Answer:
Explanation:
An animal cell has a cellular membrane, which keeps its contents inside, differentiating the inside from the outside. A plant cell has both a cellular membrane and a cell wall, which keeps its shape and prevents it from going through lysis and cellular destruction
tl;dr
Animal cell: cell membrane
Plant cell: cell wall, cell membrane
Why are Acacia Trees dependent on Giraffes?
Answer:
One study found the growth of acacia trees depended on herbivores. When the trees were protected from herbivores, including the giraffe, they produced less nectar. It turns out they this nectar provided food for ants who defended them from pests like wood-boring beetles. Also Giraffe's eat the tree seeds and when they defecate the seeds fall into new places, growing more trees.
Explanation:
Is vaping a positive or negative feedback?
taking nicotine over and over is a _____ feedback loop.
After a long period of withdrawal your brain will reduce the receptors on your neurons back to how they were before addiction. This is an example of ____ feedback loop.
Answer: I think Negative?
Explanation:
The select the complementary DNA strand for the strand provided-AACTCGGAT
-GGTCTAAGC
or
-TTGAGCCTA
or
-AACTCGGAT
or
-CCAGATTCG
Answer:
TTGAGCCTA
Explanation:
A is paired with T and C is paired with G, so switch each gene with it opposite
Large volcanic eruptions can sometimes lead to a decrease in the
amount of life on Earth. Please describe how volcanic discharge can lead
to this decrease in biodiversity. (Hint: What does a Volcano erupting do to
the area surrounding it? Kills plant and animal life?)
answer ASAP please
Answer:
Plants are destroyed over a wide area, during an eruption . ... Aquatic life can be affected by an increase in acidity, increased turbidity, change in temperature, ...
Explanation:
hopefully its right!
gases involved in photosynthesis of a plant and their roles
atmospheric oxygen- expelled as a waste product from the plant conducting photosynthesis, carbon dioxide- taken into the plant to go through photosynthesis and is used to make glucose.
Explanation:
What is a component of amino acid not contained in starch?
Amino acids contain hydrogen.
Amino acids contain nitrogen.
Amino acids contain oxygen.
Amino acids contain carbon.
Answer:
Amino acids contain nitrogen.
How do animals return water to their environment from their bodies?
Answer: Animals excrete water by respiration and by passing urine.
Which is the region of actively dividing
cells at the tip of the stem?
Answer:apical meristem
Explanation:
why is it important to ask questions
Answer:
It helps you uncover the challenges you're facing and generate better solutions to solve those problems. We're all spending too much time and energy solving the first iteration of a challenge with the first idea we have. That's both limiting and counterproductive.
Explanation:
WILL MARK BRAINLIEST!!!! Can someone help me with this question?
What observations did scientists make when they collected and dissected rockfish?
Answer:
Rockfish larvae are pelagic, there is genetic evidence for limited dispersal within Puget Sound for the quillback and copper (S. caurinus) rockfish (Seeb 1998) as well as for differentiation from coastal populations of brown rockfish (S. auriculatus) (Buonaccorsi et al. 2002). This degree of population structure is consistent with other genetic and otolith studies from coastal Pacific rockfish populations
Answer:
Rockfish larvae are pelagic
Explanation:
Water pressure
A. is less than air pressure for the same volume of air
B. decreases with depth
C. is about twice as much on a diver at 10m as at the surface
D. is unaffected by atmospheric pressure
Answer:
lAnnswer letter A.
is less than air pressure to the same volume of air
RNA moves genetic information in DNA from the ___ to ___ so that proteins can be produced.
Answer: dna to rna
Explanation: science class
Which two structures produce energy that cells can
use?
O A and B
OB and C
O Cand D
O D and A
Answer:
According to the plant cell scheme, the two structures that produce energy that cells can use are D, which corresponds to mitochondria, and A, which is a chloroplast, so the answer is D and A (fourth option).
Explanation:
In the plant cell —unlike the animal cell— there are organelles called chloroplasts, responsible for converting light energy from the sun into chemical energy. In addition, there are mitochondria, which also provide useful energy to the cell.
In the chloroplast, photosynthesis takes place, a process that during the light phase produces ATP and NADPH⁺ from solar energy. In the mitochondria, energy in the form of ATP is obtained from glucose, due to oxidative phosphorylation and the electron transport chain.The organelles indicated in the diagram are mitochondria (A) and chloroplast (D), both responsible for producing energy for the plant cell.
Answer: D and A
Explanation:
3. What are the advantages of using renewable energy sources to generate electricity?
a. Chemicals are released into the atmosphere.
b. It is expensive to maintain energy facilities.
c. It is produced by sustainable substances.
d. They are much less expensive than nonrenewable energy sources.
Which part of the cell theory most aligns with the process of Mitosis?
Answer:
cell division
cell division
A ball at rest starts rolling down a hill with a constant acceleration of 3.2 meters/second2. What is the final velocity of the ball after 6.0 seconds?
Answer:
19.2 meters/second^2 would be the correct answer.
Explanation:
Without(blank)
a species is not able to survive.
A. genetics
B. reproduction
C. kingdoms
D. bacteria
Answer:B
Explanation:because of the speakeasies doesn’t reproduce than there will be no more of that said spices.
Answer:
reproduction
Explanation:
12547689 x 0 = 0
Species in a symbiotic relationship have evolved interdependence upon one another. Which is true about symbiosis?
A The species in a symbiotic relationship must live in the same area.
В The species in a symbiotic relationship must live on land.
Answer:
b is your answer
Explanation:
An incoming ray of light strikes the surface of a calm pool of water. Which letter below indicates the
reflected ray of light?
If I'm correct its W ....