How can cells from the same organism have such different shapes and functions?
Answer:
As each cell differentiates, the DNA changes so that each type of cell has different DNA once it reaches maturity. B Mutations in the cells' nuclei lead to new combinations of DNA, resulting in different shapes and functions in the different types of cells.
Explanation:
Answer:
Because cells are not only characterized by by their genetic material and other interior components, but also by the genes they express. Cells have to fulfill multiple different functions to be able to build complex multicellular organisms. Differently expressed genes lead to different proteins made in the cell, which leads to different morphology, shape or function. For example melanocytes in the skin are highly specialized cells which mostly make the pigment melanin. Plasma cells on the other are highly specialised for making antibodies.
What ecosystem services and resources do we use/rely on for everyday life? (list as many as possible)
After a culture of cells is allowed to multiply and is viewed through a microscope, the cells are x-rayed with high-energy radiation for less than 1/100th of a second. After the radiation, many newly reproduced cells appear different. What has probably occurred?.
After an exposure of the cells to high-energy radiation many newly reproduced cells appear different due to mutation.
What is mutation?Mutation occurs in cells when the change or damage of deoxyribonucleic acid in the cell brings about alterations in the genetic makeup of the organism.
Mutation of genetic material is caused by environmental factors called mutagens.
Examples of mutagens include:
radiation, chemicals, andinfectious agents.X-ray is an example of electromagnetic wave that possess high-energy radiation.
Therefore, after an exposure of the cells to high-energy radiation many newly reproduced cells appear different due to mutation.
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If a square-eyed, orange pet mates with a round-eyed, green pet, can they have any round-eyed orange
offspring? Explain
Yes, round-eyed orange offspring is formed because this round eyed feature is present in one of the mating organisms.
Can offspring of round-eyed orange produced?
If a square-eyed, orange pet mates with a round-eyed, green pet, they can also have round-eyed orange offspring because this round eyed feature is present in one of the mating organisms.
So we can conclude that round-eyed orange offspring is formed because this round eyed feature is present in one of the mating organisms.
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Oxytocin secretion and milk release from the mammary glands of lactating female mammals are initiated by _____.
Answer:
oxytocin - Billie
Explanation:
44) A fishing practice that is commonly used to catch large solitary species of fish and was featured in The Perfect Storm is ________________________.
A fishing practice that is commonly used to catch large solitary species of fish is referred to as Long line fishing.
What is Long line fishing?
This practice involves the use of a long main line attached to several hooks at various intervals.
This helps to catch large solitary species of fish and was featured in The Perfect Storm.
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Which innate immune functions provide immediate protection from foreign antigens?.
Phagocytosis is the innate immune functions provide immediate protection from foreign antigens.
What is phagocytosis?Phagocytosis is a process that take place in cells of organisms in which the cell ingest and eliminate particles like microorganisms, foreign substances, and apoptotic cells. Phagocytosis is found in many types of cells .
Therefore, Phagocytosis is the innate immune functions provide immediate protection from foreign antigens.
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Plasmolysis of bacteria in foods occurs when high concentrations of salt or sugar are added to the foods creating a
Plasmolysis of bacteria in foods occurs when high concentrations of salt or sugar are added to the foods creating a hypertonic environment.
The nuclear membrane's role in the regulation of gene expression involves _____. protein activation translation protein degradation regulating the transport of mRNA to the cytoplasm RNA processing
Answer:
Regulation the transport of mmRNA to the cytoplasm
Explanation:
What kind of cross is used when one of the parents has an unknown genotype?.
Answer:
Test/Back Cross ( a method used to determine the unknown genotype of organsm by crossing it with recessive phenotype)
Answer:
[tex]beinggreat78~here~to~help![/tex]
The term is called a test-cross. This method is used to determine the genotype of someone whose genotype is unknown. For instance, we can see the person's eye color, which is Hazel, but we cannot identify which genotype they have because they have mixed eye colors. You would have to test or back cross to discover their genotype.
What would happen if the concentrations of carbon dioxide and methane rose too high?
Answer:
I'm assuming this means concentrations of the atmosphere*
Explanation:
Carbon dioxide are both considered greenhouse gasses. This means whenever they are in the atmosphere, they absorb heat from the sun and trap it within the atmosphere. In general, greenhouse gasses are a good thing. They trap heat in the Earth during nighttime so we do not freeze when we don't have the sun. However, since the Industrial revolution, the overuse of fossil fuels which are made of carbon and sometimes have high methane concentrations have lead to an excess amount of these gasses in our atmosphere. If concentrations become too high, the Earth's climate will continue to display higher average temperatures, leading to a complete change in our environments as once glacial areas will begin to display more temperate climates, and temperate and warm climates will become even hotter. Ecosystems in every area will be severely damaged, with many species likely facing extinction. Additionally, sea levels will rise much higher, both due to the melting of glaciers into the ocean and also because warmer climates will make the ocean warmer, meaning the molecules of water will spread farther apart and increase the volume of the ocean.
8. Describe: Locate the Sun on the H-R diagram. How will the Sun's luminosity and
temperature change as it ages? How will these changes affect its position on the diagram?
Answer:
It will eventually become less bright and cooler.
Explanation:
Astronomers estimate that the Sun's luminosity will increase by about 6% every billion years. This increase might seem slight, but it will render Earth inhospitable to life in about 1.1 billion years. The planet will be too hot to support life.
The Sun is a weakly variable star, and its actual luminosity therefore fluctuates. The major fluctuation is the eleven-year solar cycle (sunspot cycle) that causes a quasi-periodic variation of about ±0.1%. Other variations over the last 200–300 years are thought to be much smaller than this.
Answer:
it will turn into a super giant then eventually turn into a white dwarf star
Explanation:
7 Infer Before scientists were able an to view and study the ocean floor directly , why might they have expected the ocean floor to be smooth and flat ?
Answer:
Rocks deteriorating the ocean floor
Explanation:
As rocks scrape past the ocean floor they chip away at it smoothing it (erosion) out but due to continental drift and magma rising and cooling it causes the new igneous rock forms on the ocean floor making it rough and rugged.
When thinking about this think about a pebble on the beach, what it is?
rounded due to erosion just as scientists thought the ocean floor would be.
Please help i don’t understand this question for my biology class
Answer:
I believe it is receptors
Which of the following terms denotes the chromosomes which are similar in size, shape, and genetic material?
Answer: Each pair of chromosomes consists of two chromosomes that are similar in size and shape. They contain the same genes at the same loci, though they may have different alleles. These pairs of chromosomes are known as homologous chromosomes or homologs.
Explanation:
what TWO biomes experience all 4 seasons?
Answer:
Explanation:
1, What are the 2 biomes that experience all four seasons?
Tropical forests are warm, humid, and found close to the equator. Temperate forests are found at higher latitudes and experience all four seasons. Boreal forests are found at even higher latitudes, and have the coldest and driest climate, where precipitation occurs primarily in the form of snow
1. compare and contrast channel proteins and the classes of carrier proteins (e. g. , uniporter, symporter, and antiporter) including the relative direction of molecule movement and any associated energetic needs. which protein class would nicotinic acetylcholine receptors (nachrs) be associated with?
2. in cardiac muscle, acetylcholine binds to muscarinic acetylcholine receptors (machrs), which are g-protein coupled receptors, which elicit a signal transduction pathway that induces cardiac muscle to relax. outline how g-protein coupled receptors induce signal transduction pathways including relevant secondary messengers.
3. interpret dr. peterson’s statement that active transport is essential for facilitated diffusion of na+ ions to occur in muscle cells. how are na+/k+ pumps involved in this process? sketch a na+/k+ pump indicating conformational changes and energy usage steps and identify ions that are moved during the cyclic process.
4. generally, after neurotransmitters are released in the neuromuscular junction, many of the neurotransmitters or some of their components are recycled by a reuptake mechanism inherent in the pre-synaptic neuron. considering that the reuptake mechanism is often a sodium-dependent process that utilizes membrane potential, what type of membrane transport might you expect to be in play here?
Uniporter allows the movement of a subtance in one direction, symporter two molecules in the same sense and antiporter two in opposite sense. Nicotinic acetylcholine receptors are linked to symporters to allow the movement of neurotransmitters. G protein function is coupled to second messengers such as cyclic AMP, active transport allows the movement of substance again a concentration gradient and reuptake mechanism involves symporter transport.
What are uniporter, symporter, and antiporter?The terms uniporter, symporter, and antiporter make reference to different types of channel proteins located in the cell membrane which allows the movement of molecules through this selectively permeable barrier.
Moreover, nicotinic acetylcholine receptors are receptors that bind to certain neurotransmitter chemical messengers such as acetylcholine in order to allow the movement of ions through the membrane.
Therefore, with this data, we can see that uniporter, symporter, and antiporter are different classes of channel proteins in regard to the movement of molecules in and out of a selectively permeable barrier (i.e. the cell membrane).
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Why is mass selection considered a form of selective breeding?
Mass selection is considered a form of selective breeding because it includes selection of individuals from a large group organisms.
What is mass selection?Mass selection is defined as a type of selective breeding in which two species are chosed and breeded with one another. This process is used to get the desired characteristic organism.
So we can conclude that mass selection is considered a form of selective breeding because it includes selection of individuals from a large group organisms.
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Help w this I’ll give brainliest
Answer:
The common things between all species are DNA, RNA, amino acids, and ATP. All living things have the same biochemical building blocks.
It shwos that although we all have similar structures and make-up, who we evolved from counts for who we are. Species come from the same things but differenciate over time due to evolution.
I think that a horse and a donkey would have the fewest differences. I think this because the two species are very similar and amino acids refect the similarities between two species. Both horses and donkeys have a similar structure and make-up, which is determine by amino acid sequences.
Explanation:
compare the effect of the ozone in the troposphere with its effect in the stratosphere where is it harmful where is it helpful
Answer:
Ozone in the stratosphere is helpful; it absorbs harmful UV-B and UV-C waves from the sun, which are both known to cause sunburn and skin cancer. On the other hand, ozone in the troposphere is very damaging; it is a major component of photochemical smog, and it causes eye, nose, and lung irritation and aggravates asthma.
Do you like snakes? What do you like/dislike about them?
I personally love snakes, I find them to be adorable and very boopable. I also find them to be interesting creatures. When I see a snake outside I like to watch it for a while and get some pictures before continuing on with my day. I plan to own a pet snake in the future.
You push an object really hard but it does not move. Has “work” been done?
Yes
No
Answer:
No
Explanation:
Work is when motion is accomplished
Answer:
No
Explanation:
Obviously because if it doesnt move there has been no progress
how is the level of thyroxine controlled gsce
Explanation:
Its levels are controlled by negative feedback. The hypothalamus and pituitary gland have important roles in detecting and controlling thyroxine levels. Low thyroxine levels in the bloodstream stimulate the hypothalamus to release TRH and this causes the pituitary to release TSH so the thyroid releases more thyroxine.
Bedrock in the area of Binghamton, New York, consists of?
a)plutonic igneous rock
b)sedimentary rock layers
c)faulted and tilted volcanic rock
d)folded metamorphic rock
Answer:
b)sedimentary rock layers
Explanation:
New York is composed of sediments that have metamorphed around 400 to 500 million years ago during the Acadian and Taconic orogenies.
Bedrock in the area of Binghamton, New York, consists of sedimentary rock layers. So, the correct option is B.
What are sedimentary rock layers?The formation of sedimentary rocks involves the accumulation or deposit of mineral and organic particles at the Earth's surface, following by cementation. The mechanisms that lead to the accumulation of these particles are collectively referred to as sedimentation.
Sediment refers to the little particles that make up sedimentary rocks and can be either geological detritus (nitrogen and phosphorus) or biological detritus (organic matter). Sandstone, limestone, and mud are examples of typical sedimentary rocks.
These rocks frequently begin as sediments that are transported by rivers, then are dumped in lakes and oceans. The sediments become dry and cement together to form rock when they are buried. Volcanic ash can be found in tuffaceous sandstones. Bedrock in the area of Binghamton, New York, consists of sedimentary rock layers.
Therefore, the correct option is B.
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Why is saturated fat found in so many animal products?.
what is the inheritance of acquired characteristics? What scientist developed this mistaken idea?
The idea of it is that if an organism changes during life in order to adapt to its environment, those changes are passed on to its offspring. However, that isn't the case (proved by Darwin). This theory was made by Jean Baptiste Lamarck.
In any population, some individuals will have more kids than other individuals (just by chance). Some of those individuals will be "lucky" and survive. Explain the cartoon and how it shows this idea.
Answer:
By people stepping on the little bugs, it kills them. and when they are born some will die and others won't
Explanation:
The cartoon refers to the principle of natural selection, which operates in many species, including bugs.
When individuals of a species reproduce, their offspring inherit certain traits or characteristics that can be advantageous or disadvantageous. In the case of bugs, some may have stronger exoskeletons, faster reflexes, or better camouflage, which can help them survive being stepped on or avoid being noticed by predators.
As a result, those bugs with advantageous traits are more likely to survive and reproduce, passing on their favourable characteristics to the next generation, while those without these traits are more likely to die. This is an example of natural selction.
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What functions does the muscular system perform
A. It provides stability, movement, and posture
B. It generates and conducts electrical signals
C. It produces melanin, which protects from the Sun
D. It produces oil, which protects from foreign invasion
Answer:
A.
Explanation:
The muscular system provides for movement of the body and its parts, maintains posture, generates heat, and stabilizes joints.
Mainly, it's responsible for movement, posture, and stability.
Hope this helps !
How long does it take for tadpoles to turn into frogs?.
Answer:
about 14 weeks.
Select the correct answer from each drop-down menu. the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.
The DNA of humans and mice is almost 92% similar. This similarity indicates that mice share a common ancestor with humans. Mice have a tail, while humans have a tailbone.
Why do humans share DNA with mice?Humans and mice don't look alike, but both species are mammals and are biologically very similar. Almost all of the genes in mice share functions with the genes in humans.
That means we develop in the same way from egg and sperm, and have the same kinds of organs.
Thus, Mice have a tail, while humans have a tailbone is correct.
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