The autonomic nervous system is divided into two parts; the ____ nervous system (which prepares the body for emergency action), and the ____ nervous system (which calms the body
Answer:
The central nervous and peripheral system.
Explanation:
Which evidence supports the hypothesis that four-limbed animals came from fish?.
Answer:
Which evidence supports the hypothesis that four-limbed animals came from fish? -DNA analysis shows that fish are tetrapods' closest relatives. -The fossil record shows more and more tetrapod-like fish before the appearance of tetrapods about 365 million years ago.
Most fish have flat heads. However, it's crucial to remember that the earliest known tetrapods, Acanthostega and Ichthyostega, had flat heads. The discovery of a fish with a flat head was a strong cue that this fossil was a part of the gradual transition from fish to tetrapods.
What evidence supports four-limb animals came from fish?The appearance of tetrapods about 365 million years ago, the fossil record records fish that were similar to tetrapods. Human embryos have gill slits, while fish and animals with four legs have embryos that are comparable to those of fish.
Ancient animal fossils have revealed how prehistoric life emerged from the ocean and made its clumsy initial steps toward the development of four-legged land animals.
Therefore, Fish were the closest relatives of tetrapods, according to DNA study. Before tetrapods appeared about 365 million years ago, the fossil record reveals an increasing number of fish with tetrapod-like characteristics.
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Mikayla is at the garden center picking out plants for her front garden. She sees flowers in many different colors and patterns. Mr. Kim, the shop owner, sees Mikayla examining some camellias. He points out several kinds of flowers and explains how they end up with their color.
Choose the sentence from the passage that describes incomplete dominance.
1. These flowers are red and white because they have one red parent and one white parent.)
2. This is due to both alleles being expressed at the same time.)
3. But these pink flowers also have one red parent and one white parent.
4. Blending of colors occurs from mixing a dominant and recessive allele for an inherited trait.
1, 2 , 3, or 4?
this is due to both allels being expressed at the same time
Consider an isotope of sodium with a mass number of 25. The number of neutrons in this isotope of sodium is.
The number of neutrons in the isotope of sodium is 14 due to 11 number of protons.
Number of neutrons in isotope of sodium having mass number 25We know that atomic number of sodium is 11 which means sodium has 11 protons in its nucleus so if the atomic mass is 25 then 25 -11 is equals to 14.
So we can conclude that an isotope of sodium with a mass number of 25 has 14 electrons in its nucleus because there are 11 protons are present in the nucleus of sodium atom.
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Where is the brain located? A. In the spinal cord B. In the neck C. In the chest cavity D. In the skull Please select the best answer from the choices provided A B C D.
A metaphor that is commonly used to think about evolution at multiple loci is known by what term?.
Answer:Adaptive Landscape
Explanation:
PLEASW HELP
A man who is lactose tolerant and whose mother is lactose intolerant marries a women who is lactose intolerant. They give birth to a girl. What are the chances that the daughter will be lactose tolerant?
Answer:
very low, because being lactose intolernt is a reccesive trait and due to the mans father not having it means that he carries the domimant trait that cancels out lactose intolerance, which, ultimately, cancels it out for him and his wifes child.
Explanation:
see answer.
Stratus, cirrus, cumulus and nimbus are types of what?.
Clay in soils represents a trade-off in nutrient availability, such that ________.
Answer:
the plant planted there will not have enough nutrients to grow
Based on arrow movement, why is the front shown in item A different from the front shown in item B? Warm air rises above cold air in item A, while two air masses collide in item B. Cold air mixes with warm air in item A, while two air masses barely move in item B. Warm air is pushed upward near cold air in item A, while a boundary forms in item B. Two air masses form a boundary in item A, while warm air rises above cold air in item B.
Answer: d. Two air masses form a boundary...
Explanation:
edge
Answer:d
Explanation:
4. Examine the codon chart and list all of the codons that code for
the amino acid leucine. List them:
Answer:
CUU,CUC,CUA,CUG,UUA,UUG
Explanation:
It says so on a amino acid codon chart.
Hope it helps!
Sorry if incorrect.
What was simulated in the Miller-Urey experiment?
volcanic eruptions
tidal waves
lightning bolts
high winds
Answer:
They used a sparking device to mimic a lightning storm on early Earth. The Miller-Urey experiment was a simulation of conditions on the early Earth.
Explanation:
Answer:
Lighting bolts
Explanation:
Try a few examples to verify that the doubling time is indeed 7 days. Day 0: plants Day 7: plants Did the water lilies double? Day 10: plants Day 17: plants Did the water lilies double?.
Doubling time is the time taken by the plants, bacteria or animals to raise or double its population. Yes, the doubling time is indeed seven days.
What is the doubling rate?Doubling time is the rate of the time taken by the bacteria or plant to double its population from the given number. On day 1, the population of the water lilies were 2 and on day 7, it was found to be 4. This depicts that the population got doubled in seven days.
On day 10, it grew to 10 and on day 17 to 20. In the duration of seven days, the population of the water Lilly doubled. From this, it can be said that the population of the plant got doubled.
Thus, the doubling time is seven days.
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Answer:
Day 0: 4
Day 7: 8
Did the water lilies double? Yes
Day 10: 10
Day 17: 22
Did the water lilies double? Approximately
The slider only goes up to day 30, but this pond can hold up to 400 water lilies. Estimate the day that the pond will be full. Day 46
Label each item as a description of a haploid or a diploid cell.
——— is described 2n
——— is described as n
——— has single chromosomes each from one parent
———— somatic cell
———- makes fertilization possible
———— results from meiosis
————— fertilized zygote
Answer:
In image :)
Explanation:
Compare energy carriers and final products in terms of glucose.
Photosynthesis:
Cellular respiration:
While in photosynthesis carbon dioxide and water yield glucose and oxygen, through the respiration process glucose and oxygen yield carbon dioxide and water.
Photosynthesis: Glucose is produced as an energy carrier in photosynthesis.
Cellular respiration: Glucose is broken down as an energy source in cellular respiration.
In photosynthesis, plants capture sunlight and convert it into chemical energy in the form of glucose. The process takes place in the chloroplasts of plant cells, where carbon dioxide and water are combined in the presence of sunlight to produce glucose and oxygen. Glucose acts as an energy carrier in the plant, providing the necessary fuel for various cellular processes and growth.
In cellular respiration, glucose is used as a fuel to produce energy in the form of adenosine triphosphate (ATP). The process takes place in the mitochondria of cells, where glucose and oxygen are combined to produce carbon dioxide, water, and ATP. During cellular respiration, the chemical energy stored in glucose is released and used by cells to perform various functions, such as muscle contraction, cell division, and synthesis of molecules.
In summary, glucose plays different roles in photosynthesis and cellular respiration. In photosynthesis, it is produced as an energy carrier, storing the energy from sunlight in chemical form. In cellular respiration, glucose is broken down as an energy source, releasing the stored energy in the form of ATP, which is then used by cells to perform essential functions. These two processes are interconnected in the carbon cycle, where glucose produced in photosynthesis is used as a primary energy source for organisms during cellular respiration, ensuring the flow of energy through ecosystems.
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The cell cycle is:_____.
a. a set of orderly stages that occur between one cell division and the next.
b. a set of orderly stages that occur between cell division and programmed cell death.
c. also called mitosis.
Why does testosterone not affect all cells in the body?.
Answer: Only certain cells have cytoplasmic receptors for testosterone. Which of the following statements describes the function of inositol trisphosphate (IP3) as a second messenger?
Explanation:
The specificity of testosterone's effects on cells is primarily due to the presence or absence of specific receptors for testosterone, known as androgen receptors.
What are androgen receptors?
Androgen receptors are proteins found inside cells that can bind to testosterone and similar androgenic hormones.
These receptors are present in different tissues throughout the body, but their distribution varies.
Some cells and tissues express a high density of androgen receptors, making them more responsive to the effects of testosterone, while others may have lower or no expression of these receptors, rendering them less responsive or unresponsive to testosterone.The cells that are most sensitive to testosterone are those that have a higher expression of androgen receptors. These include cells in the male reproductive organs (such as the testes, prostate, and seminal vesicles), as well as certain cells in other tissues like muscle, bone, and hair follicles.Thus, the existence or lack of particular testosterone receptors, known as androgen receptors, is principally responsible for the specificity of testosterone's effects on cells.
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Are viruses alive? The scientific debate continues. Viruses exhibit some characteristics of life, but others are missing. The MOST obvious reason why scientists still refer to viruses as non-living is that they.
Scientists aren't certain whether or not viruses are residing or non-residing. In general, scientists use a listing of standards to decide if something is alive. Let’s have a take a observe a few tendencies of residing matters and spot if viruses additionally have the one's tendencies.
Living matters have cells. Viruses do now no longer have cells. They have a protein coat that protects their genetic cloth (both DNA or RNA). But they do now no longer have a molecular membrane or different organelles (for example, ribosomes or mitochondria) that cells have.Living matters reproduce. In general, cells reproduce by making a replica in their DNA. Unlike cells, viruses do now no longer have the equipment to make a replica in their DNA. But they've discovered different approaches to make new viruses. This is completed through putting virus genetic cloth into a number molecular. This reasons the molecular to make a replica of the virus DNA, making greater viruses.Many scientists argue that despite the fact that viruses can use different cells to breed themselves, viruses are nevertheless now no longer taken into consideration alive beneath neath this category. This is due to the fact viruses do now no longer have the equipment to copy their genetic cloth themselves.More recently, scientists have observed a brand new sort of virus, known as a mimivirus. These viruses do comprise the equipment for making a replica of its DNA. This indicates that positive sorts of viruses may also certainly be residingWhat is a virus?The virus is an infectious agent that transfers viroids into the host body causing disease.
Therefore it is clear that viruses are not alive.
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How does changing the environment that the bacteria are in affect their population
Bacteria respond to environmental changes by expressing or suppressing genes. This affects the organism's inner and surface chemistry.
What are the effects of environment on bacteria?Bacteria are common, largely free-living organisms that frequently only have one biological cell. They make up a vast domain of prokaryotic microbes.
When their environment suddenly changes, bacteria respond by expressing or inhibiting the expression of a vast number of genes. This reaction alters the chemistry of the organism's surface as well as its internal features.
Although bacteria can survive at higher and lower temperatures than humans, they thrive in an environment that is warm, wet, protein-rich, and pH neutral or slightly acidic. However, there are several exceptions. While certain bacteria can survive in environments of extreme heat or cold, acidity or salinity, others can.
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The medical term meaning sudden spasmodic closure of the larynx is.
Answer:
laryngospasm.
Explanation:
What is the best characterization of a fine grained igneous rock?.
Which statement describes the process of osmosis in an animal cell?
Explanation:
osmosis, the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes). The process, important in biology, was first thoroughly studied in 1877 by a German plant physiologist, Wilhelm Pfeffer.
What is a genetic factor that assists growth and survival in individual organisms?
The genetic factor that assists growth and survival in individual organisms is genetic variation.
What is genetic variation?Different phenotypes can be introduced into an organism by genetic changes that modify gene activity or protein function. If a feature is advantageous and aids an individual's survival and reproduction, the genetic variation is more likely to be passed down to the next, generation, a process known as natural selection.
The founder effect could result in a decrease of genetic variety. This is because, by definition, the founder effect is typically seen to be the cause of essential genetic variety in a specie or a specific location where organisms thrive.
Therefore, genetic diversity is a genetic element that aids in the growth and survival of individual organisms.
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Describe the homeostatic response to decreased blood pressure and volume due to extensive bleeding.
Explanation:
When blood pressure drops too low, the rate of baroreceptor firing decreases. This will trigger an increase in sympathetic stimulation of the heart, causing cardiac output to increase.
Which of the following are structures of the
peripheral nervous system? Check all that apply.
> brain
> spinal cord
> nerve cells outside the central nervous system
> nerve cell inside the central nervous system
The peripheral nervous system consist of;
Nerve cells outside the central nervous system.Nerve cells inside the central nervous system.In order words, the peripheral nervous system consists of all the nerves which branch out from the brain and spinal cord. The peripheral nervous system is further subdivided into;
Somatic nervous system.Autonomic nervous system.What is nervous system?Nervous system is the system of of the body which comprises of central nervous system and the peripheral nervous system.
The central nervous system consist of the brain and spinal cord.
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Answer:
Its C, just c
Explanation:
Carbon can enter the environment when oganisms die and ?
Answer:
Volcanoes erupt, fossis fuels are burned, fires blazed.
Explanation:
Cold air is denser than warm air and therefore puts less pressure on the ground below it than warm air does
Question 7 options:
True
False
Answer:
False
Explanation:
If two plants of the genotypes ttRr and TtRR were crossed, what would be the probability that they would produce a dwarf white plant
tall plant with red flower is crossed to dwarf plant with white flowers In the next generation tall plant with red flowers are 25%, tall plant with white flowers are 25%, dwarf plant with red flowers are 25%, dwarf plant with white flowers are 25% are formed
What would be safe alternatives to what we consume?
Answer:
The equilibrium is the only price where quantity demanded is equal to quantity supplied.
Explanation:
How do we see the pieces of debris from the comet on Earth?
Answer:
Meteor showers
Explanation:
regular intervals as the Earth passes through the trail of dusty debris left by a comet.
