Define nondisjunction. Is this a beneficial process? Explain.
Answer:
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division (mitosis/meiosis). There are three forms of nondisjunction: failure of a pair of homologous chromosomes to separate in meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister chromatids to separate during mitosis. Nondisjunction results in daughter cells with abnormal chromosome numbers (aneuploidy).
Explanation:
Why would a cancer cell need to induce angiogenesis? 1.53
Answer:
Why is angiogenesis important in cancer? Angiogenesis plays a critical role in the growth of cancer because solid tumors need a blood supply if they are to grow beyond a few millimeters in size. Tumors can actually cause this blood supply to form by giving off chemical signals that stimulate angiogenesis.
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What is an example of a population with the ingredient for species? Would it be evolution?
All members of a species that dwell in the same region are referred to as a population. You are a member of your hometown's human population. A freshwater pond is home to a variety of species, including mallard ducks and cattail plants growing on the pond's border. Basically, a population is a collection of individuals of the same species that live in the same geographic region and interbreed. Many animals have several populations that are spread across a wide range of geographic locations.
which organelle
produces the cells energy
Here is a Answer to your question:
Mitochondria
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
I am sorry if this was not helpful
Hope this was helpful
Answer:
Mitochondria
Explanation:
Which of the following molecules is the subunit of DNA that links together to form strands of DNA?
A.
a polymerase
B.
a nucleotide
C.
a codon
D.
a phosphate base
Answer:
the answer is a nucleotide
Why are organisms classified into different kingdoms? I don't want how they are classified, I just want why they are.
Living things are placed into certain kingdoms based on how they obtain their food, the types of cells that make up their body, and the number of cells they contain. Phylum is the next level following kingdom in the classification of living things.
Answer:
their classified because they have different structures.
you wouldn't want to put a goat in the same group as a insect would you?
Explanation:
how does urbanization affect your life and the area in which you live
Answer:
Population growth, lack of supplies
Explanation:
Urbanization can impact an area, especially population growth. People could be crowded, and that supplies could run out as it is an urbanized region.
please please help me :( with just this one question PLEASE
Answer:
Square 1: AA
Square 2: Aa
Square 3: aa
Explanation:
The letters on the on outsides intersect in a way making diffent alleles
Where is ciliated pseudostratified columnar epithelium found in the body?.
Answer:
The pseudostratified epithelium is also sometimes referred to as respiratory epithelium since ciliated pseudostratified columnar epithelia are mainly found in the larger respiratory airways of the nasal cavity, trachea, and bronchi.
Who would have first made this statement while observing cork under a microscope?
"The cork looks like little rooms, or cells.”
Hooke
Schleiden
Leeuwenhoek
Virchow
Answer:
Robert Hooke
Explanian
Hooke observed a thinly sliced piece of cork under a microscope and noticed they looked like the cells that monks would sleep in. That's why cells were given their name!
About how many genes do humans have?
A. 46
B. 80,000
C. 23
D. 1.3 million
Answer:
20,500
Explanation:
Which cells reduce cell mediated immune response?
Answer:
Regulatory T cells (Tregs), either natural or induced, suppress a variety of physiological and pathological immune responses
Why can't land animals evolve a better eye
Answer:
Evolving takes thousands of years
Explanation:
Take dinosaurs for example they are now chickens and other birds. Evolving takes over hundreds to thousands of years
What role(s) do the lions play in the lion king?
A coastal region has a warm climate, but tourism to the area is focused on fishing rather than swimming at the beach due to cold ocean water. Which ocean movement and result likely cause this type of environment?
Upwelling is the type of ocean movement which will result likely in this type of cold environment.
What is Upwelling?This is a process in which deep, cold water rises toward the surface and usually contain a higher concentration of nutrients.
Swimming at the beach due to cold ocean water is as a result of the process of upwelling.
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Eukaryotic cells, when compared
to prokaryotic cells, tend to be
which of the following?
A. smaller, but specialized
B. larger and more complex
C. larger, but simpler
D. smaller and simpler
( b )
Answer:
B. larger and more complex.
Which specific anterior pituitary hormone stimulates
cortisol steroid hormone production?
Answer :Adrenocorticotropic hormone
Explanation:
Adrenocorticotropic hormone (ACTH) is produced by the pituitary gland. Its key function is to stimulate the production and release of cortisol from the cortex (outer part) of the adrenal gland.
First discovered enzyme is?
Answer:
The first discovered enzyme was Zymase. It naturally occurs in the yeast and helps in fermenting the sugar molecules producing carbon dioxide and ethanol.
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Answer;
D
Explanation:
To initiate signal transduction, the ligand must pass through the plasma membrane by passive diffusion. On binding with the receptor, the ligands pass through the nuclear membrane into the nucleus, altering gene expression.
When organisms live in isolation with unlimited resources and no predators, this can lead to
island gigantism
variable speciation
variation in species
reproductive success
Answer:
The answer is Island Gigantism
Explanation:
I took the test
how can you detect hardness of water collected from different sources
Which of the following is not a primary understanding of the theory of evolution?
Populations evolve, not individuals.
New species can develop over a few generations.
Existing species can gradually change in a changing environment.
A new trait must be able to be passed on to the next generation.
Answer:
Populations evole, not individuals
Explanation:
During circumstances an entire species can change either by changing the environment, traits passed onto progeny, or in a few generations. It doesn't make sense for the Theory of Evolution would surround the fact populations of a species would evolve but not individuals.
why is it beneficial for scientists to understand how other organisms are able to edit their RNA
Answer:
Many see RNA editing as an important alternative to DNA editing using techniques such as CRISPR.
Explanation:
It is beneficial for scientists to understand how other organisms are able to edit their RNA because it gives an idea for scientists in order to identify particular causes and symptoms of genetic and environmental disorders among individuals.
What is RNA?RNA stands for ribonucleic acid. It may be characterized as a type of nucleic acid that is significantly present in all living cells. It expresses some structural and functional similarities to DNA. There are major three types of RNAs found. It includes mRNA, tRNA, and rRNA.
There are various techniques that help scientists to observe numerous RNA and its editing in organisms. It is an important alternative to DNA editing. This methodology of RNA editing and functionality is determined by using techniques such as CRISPR.
Therefore, it is beneficial for scientists to understand how other organisms are able to edit their RNA because it gives an idea for scientists in order to identify particular causes and symptoms of genetic and environmental disorders among individuals.
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Residents of an older building have children with a higher incidence of developmental delays. Which of the following is a possible cause of the developmental issues?
Old lead pipes are still used in the building.
Asbestos was not removed from the building.
The heating system is releasing carbon monoxide.
Pesticides were used in the building's landscaping.
Answer:
A
Explanation:
I took the test :)
Primitive lead pipes still in use in the construction may be the root of the building's developmental issues. So, the correct option is A.
What are Lead pipes?Long lead pipes are recognised as the main source of lead in drinking water, lead service lines are the pipes that transport water from the underground water main to homes.
Remember that lead has been used in water pipes for thousands of years. Ancient civilizations picked lead for piping because it could withstand tiny leaks and was pliable enough to form into efficient water-delivery designs.
The development problems with the building may be caused by the outdated lead pipes that are still being used in the construction.
Thus, the correct option is A.
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Which of the following describes a limiting factor of population size?
Birth rate
Death rate
Available land
Gestational period
Answer:
death rate
Explanation:
As death rate increases there's decrease in population
The color of your eyes is
A)
an inherited trait.
B)
determined by what you eat.
C)
dependent on your environment.
D)
linked to what colors you can see.
Answer:
A.
Explanation:
hope this helped
It is dependent on what you inherit from your parents. Either a dominant gene or a recessive gene. :))
Answer:
its an inherited trait
Explanation:
because it can come from your father ro your mother, or perhaps both
Chemicals given off by the systemic capillary blood to the perivascular tissues often include which of the following?
Glucose
Ammonia
Antibodies
O Oxygen
Hormos
Carbon dioxide
Oxygen is carried from systemic capillary blood to the perivascular tissues
Systemic capillary flow.Systemic circulation blood flow help to carry oxygenated blood from the left ventricle passing through the arteries, to the capillaries in the tissues of the body. The deoxygenated blood returns from the tissue capillaries through a system of veins to the right atrium of the heart.
Therefore, Oxygen is carried from systemic capillary blood to the perivascular tissues
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if temperature were available from several stations in canada near the great lakes do you think 15-degree line would form a closed loop?
Yes, a 15-degree line would form a closed loop for temperature obtained from several stations in Canada near the Great lakes.
What is temperature?Temperature refers to a measure of the degree of hotness or coldness of a physical body (object). Also, temperature is typically measured by using a thermometer and its units are:
Celsius (°C)Kelvin (K)Fahrenheit (°F)What is an isotherm?An isotherm can be defined as a line that is drawn on a map to join points with the same temperature, so as to show the distribution of temperature in a geographical region on Earth's surface.
In Meteorology, a closed loop is used to show or depict where an air mass is located when drawing isotherms. Thus, a 15-degree line would form a closed loop for temperature obtained from several stations in Canada near the Great lakes.
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A Gram + bacterium that inhibits the growth of other Gram + bacteria is an example of what?
Answer:
The selenium particles when coated on paper towels were extremely effective and continuously inhibited (about a 90% reduction) the growth of gram-positive bacteria including S. aureus and S. epidermidis after 24, 48, or 72 hours.