Answer:
Charles Darwin proposed one of the theory of evolution which can still be observed till date in organism.
Organism have numerous offsprings and only the offspring with characteristics to overcome unfavorable conditions survive and passes such genes to their offsprings
What ecosystem services and resources do we use/rely on for everyday life? (list as many as possible)
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.
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.
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.
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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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 !
Why is saturated fat found in so many animal products?.
Which part of a sound wave measures loudness? O wavelength O magnitude O amplitude O frequency
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.
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.
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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Which is included in a lysogenic cycle? early lysis of the host cell the creation and assembly of viral particles the appearance of viral infection symptoms a period of genetic integration
The lysogenic cycle includes the early lysis of the host cell that involves the incorporation of the viral genome into the host cell genome.
What do you mean by the Lysogenic cycle?
A lysogenic cycle may be defined as a method by which a virus can replicate its DNA using a host cell.
In the lysogenic cycle, the viral DNA gets integrated into the host's DNA but viral genes are not expressed. Lysogeny is characterized by the integration of the bacteriophage nucleic acid into the host bacterium's genome.
Therefore, the lysogenic cycle includes the early lysis of the host cell that involves the incorporation of the viral genome into the host cell genome.
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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
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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Please help i don’t understand this question for my biology class
Answer:
I believe it is receptors
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.
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:
What is the primary function of mitosis and meiosis?
fertilization
ensure cellular respiration uses the correct amount of energy
ensure cells have the correct amount of DNA
initiate as_xual and s_xual reproduction
Answer:
initiate as**xal reproduction (MITOSIS) and s**ual reproduction (MEIOSIS)
Which sphere is the atmosphere interacting with when winds are produced over oceans?.
Answer:
The hydrosphere
Explanation:
The atmosphere interacts with the hydrosphere to redistribute water over the surface of Earth.
Kathy has been exercising vigorously for the past half hour. Her body feels sore and she feels pain in her limbs. What could be the reason for this?
A.
Accumulation of lactic acid in the muscles of her limbs
B.
Accumulation of alcohol in the muscles of her limbs
C.
Accumulation of CO2 in the muscles of her limbs
Answer:
I think the answer is C.
Explanation:
Your body will feel weak if that happens.
When the tubular fluid leaves the distal convoluted tubules, it must travel through a series of small ______ that empty into ______.
When the tubular fluid leaves the distal convoluted tubules, it must travel through a series of small collecting tubules that empty into the collecting duct.
What are these structures a part of?The structures described in the question are a part of the organ in charge of filtering the blood and producing urine, the kidney. Within the kidney, the filtered plasma, in the form of urine, travels through a series of tubules and ducts in order to reach the ureter.
Therefore, we can confirm that when the tubular fluid leaves the distal convoluted tubules, it must travel through a series of small collecting tubules that empty into the collecting duct.
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How long does it take for tadpoles to turn into frogs?.
Answer:
about 14 weeks.
How does the structure of a muscle cell relate to its function?
Answer:
A single muscle cell is elongated and has a large number of myofibrils. Muscle contraction is performed by thin strands of the proteins actin and myosin. Muscle flexing is made possible by the elongated form of muscle cells, which permits contraction proteins to line up in an overlapping manner.
What are the properties of copper.
Answer:
Copper is a reddish metal with a cubic crystalline structure that is face-centered.
Explanation:
Due to its band structure, it reflects red and orange light while absorbing other visible spectrum frequencies. This gives it a nice reddish tint. Copper is also malleable, ductile, and an excellent heat and electricity conductor.
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.
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's the difference between an autobiography and a biography
Answer:
An autobiography is a true story about someone's life that is written by that person. A biography is a true story about someone's life written by a different person.
Explanation:
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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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.