Answer:
Free radicals are atoms or molecules with an odd (unpaired) number of electrons. They can be formed when oxygen interacts with certain molecules. Many free radicals are necessary for life and are used by our body's cells to kill invading bacteria.
Explanation:
A balance between free radicals and antioxidants is necessary for proper physiological function. If free radicals overwhelm the body's ability to regulate them, a condition known as oxidative stress ensues. Free radicals thus adversely alter lipids, proteins, and DNA and trigger a number of human diseases.
what would happen if DNA replication it didn't occur?
Answer:
If DNA replication does not occur, then the cell cycle (Mitosis and Miosis) will not proceed to the next stage and the subsequent division will not happen. It will lead to cell death.
Simply put, without cell replication, cells can’t divide and they eventually die out.
The enzyme that travels along a template strand, assembling nucleotides into a growing DNA strand, is
Answer: DNA Polymearse 111
how different parts of the human digestive system help to break down molecules of fat so that they can be absorbed into the body.
Accidental radiation exposure resulted in a germ line mutation in an organism. What is the most likely outcome on the progeny of this organism?
A.The change is not carried forward to the progeny of the organism.
B. The change is carried forward to the progeny of the organism.
C. The change is lost in the progeny of the organism.
Answer:
A. The change is not carried forward to the progeny of the organism.
Explanation:
A bacterial operon is usually turned on, but it can be turned off when it is not needed. This is a(n) _______ operon.
Answer:
repressible
Explanation:
Bacteria that are able to survive in an alkaline environment having bile salts present are adapted to living in the
can someone tell the ans for this w explanation
Answer:
D. BB x Bb
Explanation:
I will add this either in the comments of this answer or I will edit the answer after posted
Which procedure involves the destruction of a blood clot using anticlotting agents called clot-busters
Answer:
Lytic therapy - A clot-busting medication given in the hospital into the blood vessel to break up clots. The treatment has a risk of bleeding.
Which celestial body has a larger effect on tides
The moon is a major influence on the Earth's tides, but the sun also generates considerable tidal forces.
Before her eggs are due to be collected for IVF, a woman is injected around 36 hours before collection. This injection usually contains human chorionic gonadotrophin (hCG). Why is this hormone used prior to the collection of eggs
first answer = brainliest
Answer: 125c cm3
Explanation: done!
I would say 30cm, bc each 6 side is 5cm and if we multiply 5x6 it will give us 30cm
The four cells produced in meiosis will have a
Answer:
At the end of meiosis, all four cells formed are identical as far as the number of chromosomes is concerned, but will not be identical to each other as far as the genes present on the chromosomes.
Hope this helps :)
Brendan made a chart to categorize the characteristics of animals. An empty 2-column table titled Characteristics of Animals. Column 1 is labeled Always. Column 2 is labeled Sometimes. Which phrase should be written in the column titled "Sometimes"? Are multicellular Have membrane-bound organelles Produce their own food Display an asymmetrical body plan.
The phrase written in the columns are:
Column 1 : Always Have membrane-bound organelles.
Coumn2 : Sometimes produce their own food.
Column 2: Display an asymmetrical body plan.
What are multicellular organisms?Multicellular organisms are made up of more than one cell.
There is a cell differentiation in these organisms in early stage.
In humans, skin cells, muscle cells, blood cells, and many more different cells are present.
Examples are all animals, plants, and fungi are multicellular organisms.
Thus, the phrase is produce their own food and display an asymmetrical body plan.
Learn more about multicellular organisms
https://brainly.com/question/24381583
Answer:
A
Explanation:
a
What is another name for a polymer that
is an organic molecule?
Answer:When small organic molecules are joined together, they can form giant molecules or polymers. These giant molecules are also called macromolecules.
Explanation:
What do chromosomes contain?
Answer:
DNA
Explanation:
Answer:
the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
The best explanation of how organism are able to develop and grow is by:
Answer:
growth and development
Explanation:
when you read this topic you can understand that in humans there are hormones in charge of growth and then in plants there are also hormones that enable enlongation andalso reasons why some plants are short
During elongation, which site in the ribosome represents the location where a codon is being read?.
Answer:
Our first, methionine-carrying tRNA starts out in the middle slot of the ribosome, called the P site. Next to it, a fresh codon is exposed in another slot, called the A site.
Explanation: hope this helps
The ________ immune system reacts quickly and nonspecifically to any microorganism or toxin that enters the body.
Answer:
The innate immune system reacts quickly and nonspecifically to any microorganism or toxin that enters the body.
At which site on the dna of a gene does rna polymerase release its newly made rna?.
Answer:
promoter region
Explanation:
NONE
Please help I have no idea the awnser
Answer:
yes u should always view your notes
The La Brea Tar Pits in Los Angeles are the site of millions of fossils from the ice age. Woolly mammoths, giant sloths, dragonflies, and other plants and animals from this era have been found in these pits.
Scientists at the tar pits discovered that many of the smaller animals they extracted from the pits still exist around Los Angeles today. But many of the larger mammals—such as woolly mammoths and saber-toothed tigers—are now extinct. Why do you think this is the case? What can scientists learn about Los Angeles’ climate history by studying the specimens found in these tar pits?
Answer:
231 species
Explanation:
More than one million bones were recovered in 1906. These bones represented 231 species of vertebrates and there were 234 species of invertebrates.
Los Angeles climate is relatively stable for over 50,000 years. The fossils of more than 180 insects were preserved in La Brea Tar Pits. The climate warming probes a link for evolution of Ice Age predators.
Explanation:
Mammals like sabertooths and mammoths both are extinct because Its reliance on large animals has been proposed as the cause of its extinction, along with climate change and competition with other species, but the exact cause is unknown.
The second question you can do independently, but anyways hope this helped you!
Importance of soil pollution
Answer:
Besides air pollution, four other important types of pollution are soil, water, waste, and noise pollution -D.
Noise pollution comes from being overly loud compared to other species. Humans create a lot of noise pollution in cities where there is a lot of things going on and with that we create a lot of damage to the environment.
Explanation:Hope it's helps you ! : )
Answer:
Soil pollution causes a chain reaction. It alters soils' biodiversity, reduces soil organic matter and soils' capacity to act as a filter. It also contaminates the water stored in the soil and groundwater, and causes an imbalance of soil nutrients.
Explanation:
hope it helps you
In which stage of the cycle of a flowering plant does the plant produce seeds through pollination?
Answer:
maybe fertilisation
Explanation:
When the pollen reaches another flower, it travels to the ovary where it fertilises the egg cells to make seeds. This process is called fertilisation. These seeds are scattered by animals or the wind.
Answer:
I believe it would be the reproductive stage. In this stage of life, the plant begins to flower, aswell as fertilize and then produce the seeds.
Explanation:
Hope this helps. :)
Where does the carbon that plants use for photosynthesis come from?
O air
o water
O soil
o other plants
Which of these does NOT explain why humans and other mammals breathe through lungs, unlike amphibians and other animals that take in oxygen through simple diffusion?
A. Large animals need more oxygen than small ones.
B. Oxygen can only pass through a constantly wet membrane.
C. Mammals have fewer cells than other types of animals.
D. Warm-blooded animals need a lot of oxygen to regulate their body temperatures.
Answer: B
Explanation: Frogs have a moist, permeable skin, which can transfer gasses such as carbon dioxide and oxygen. Humans have dry skin that is impermeable to gas exchange, so almost all gas exchange takes place in the lungs. This means human lungs must be more efficient than frog lungs
Answer:
B
Explanation:
it is so due to osmosis because molecules of oxygen can move through a semi permeable membrane or a permeable membrane and wet membrane is an example
Darwin’s finches have different beaks in terms of size and shape to be able to eat different food sources like insects, nectar, and seeds. Cactus finches have longer, more pointed beaks to probe cactus flowers compared to their relatives, the ground finches.
If a plant disease killed a large portion of the cacti on the Galapagos islands, what would the future populations of finches look like in terms of beak size and shape? Use your knowledge of natural selection to determine which option is most likely.
A. Cactus finches would compete for food with ground finches and exhibit competitive exclusion, so the beaks of future generations would be similar to whichever finch outcompetes the other.
B. Ground finches would survive and pass on their shorter and wider beaks, so there would be a higher proportion of finches in future generations that have short and wide beaks.
C. Ground finches would survive and pass on their beaks, but they would mate with the remaining cactus finches, creating a new hybrid that is somewhere between short versus long and narrow versus wide.
D. Cactus finches would compete for food with ground finches and exhibit resource partitioning, so the beaks of future generations would not change.
Answer:
The Answer should be B
Explanation:
The Knowledge of natural selection to determine which option is most likely Ground finches would survive and pass on their shorter and wider beaks, so there would be a higher proportion of finches in future generations that have short and wide beaks.
What is natural selection and example?
Natural selection is the procedure in nature by which organisms sufficiently adapted to their environment survive and replicate more than those less adapted to their environment.
For example, treefrogs are sometimes eaten by snakes and birds.
Thus, option "B" is correct.
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A population of fish lived in a large lake. During a storm, a huge landslide occurred, bringing a large amount of land into the lake and splitting the lake into two bodies of water. Over many years, the fish population in each body of water evolved. The two fish populations can no longer breed together.
Is the speciation above an example of allopatric speciation or sympatric speciation? Explain how you know by referring to the definition of each.
Answer: Allopatric speciation
Explanation: Because in allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation.
I searched it up and both don't fit this 100% so I am kinda just making a guss because the first part on this sounds right but the 2nd part doesent and on the other one the first part sound wrong but the 2nd part sounds correct.
Sorry if its wrong.
The given example shows allopatric speciation, because due to a storm, a huge landslide occurred, bringing a large amount of land into the lake and splitting the lake into two bodies of water.
What is allopatric speciation?A period of geographic separation causes groups from an ancestral population to diverge into distinct species in allopatric speciation. Without any geographical separation, groups from the same ancestral population diverge into distinct species in a process known as sympatric speciation.
While parapatric or sympatric populations live in the same habitat, allopatric populations are physically isolated from one another.
Therefore, while sympatric species share a single ecological niche, parapatric populations occupy different environmental niches and are thus divided by ecological variables.
Learn more about speciation, here:
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Many of the rocks of the canyon wall
appear as horizontal bands. What do the
bands indicate about the way the rocks
formed? PLEASE ANSWER QUICK
Many of the rocks in the canyon wall the horizontal bands originate from erosion in their formation.
The hypotheses about the formation of canyonsThe hypotheses about the formation of canyons revolve around the movements of tectonic plates and the uplift of certain areas, that is, when a place is “lifted” by the force of tectonism.
With this information, we can conclude that many of the rocks in the canyon wall the horizontal bands originate from erosion in their formation.
Learn more about canyon in brainly.com/question/10770602
purchasing the latest version of the iPhone is an example of which of the following
Answer:
physiological motivator
Explanation:
because when you buy a phone your physiological reaction is triggered.
What is an example of something that increased tax revenue could pay for ?
Answer:
Increased tax revenue could pay for more government-provided services. This includes things like Social Security, Medicare, food stamps for the poor, infrastructure, etc.
Basically, an increase in tax revenue can raise money for the government to pay for more things that benefit the American people as a whole
Explanation: