Answer:
B
Explanation:
Arteries and arterioles (small arteries) have muscular walls. They're the main blood vessels involved in vasoconstriction. ... Capillaries are tiny, thin-walled blood vessels that can't constrict.
A scientist has sequenced a gene from a multicellular eukaryotic organism. Brendan claims that by analyzing the gene sequence and applying
the genetic code, he can conclude the sequence of amino acids in the protein that forms after the gene is transcribed and translated
Which statement provides the strongest evidence against the validity of Brendan's claim?
A. Regulatory proteins may activate or deactivate a gene, often by very complex mechanisms.
B. During transcription, a strand of mRNA is synthesized from complementary base pairs, with the substitution of uracil (U) for thymine
(T)
C. During translation, anticodons on tRNA bind to codons on mRNA as part of the process that forms the polypeptide.
D. After a gene is transcribed, introns are removed from the pre-mRNA to form the mRNA that is translated.
Answer:
D. After a gene is transcribed, introns are removed from the pre-mRNA to form the mRNA that is translated.
Explanation:
According to this question, a gene was sequenced by scientists from an eukaryotic organism. Brendan claims he can conclude the resulting protein after the transcription and trans of the gene.
It is true that transcription and translation are the processes that a gene undergo in order to be expressed i.e. produce protein. However, a gene sequence contains both the coding and non-coding regions in it. The coding regions code for a protein and are called EXONS in the mRNA while the non-coding regions do not encode proteins and are called INTRONS in the mRNA.
These introns are removed from the mRNA molecule that results from the transcription of a gene. The mRNA undergoes a process called SPLICING, which removes the non-coding part of the mRNA (introns) and joins the coding parts (exons).
Hence, if this occurs, Brendan will not be able to accurately conclude the resulting protein from that gene sequence because a portion of that gene will still be removed during SPLICING of post-transcriptional processing.
Which organelle is responsible for producing the energy for cellular processes?
A. organelle A
B. organelle E
C. organelle F
D. organelle G
Which is one of the primary functions of food in the body
Answer:
What are the two primary functions of the food in the body? The food that we eat provides us with energy and nutrients which are used by the body for its growth, maintenance, and repair.
The food that we eat provides us with energy and nutrients which are used by the body for its growth, maintenance, and repair.
What are the 3 main functions of food?The three functions of food are:
Nutrition absorption, Pleasing psychological requirement, and Physical .requirementsThus, are used by the body for its growth, maintenance, and repair.
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How are organisms in the domain Archaea different from those in the domain
Eukarya?
A. Archaea have DNA that is not in a nucleus.
B. Archaea have mitochondria inside their cells.
C. Archaea are multicellular organisms.
D. Archaea hold genetic information in DNA.
HELP ME ASAP
Answer:
A. Archaea have DNA that is not in a nucleus.
Explanation:
Archaea do not have a nucleus thus their DNA is in cytoplasm where as Eukarya have a full fledged nucleus
Answer:
A. Archaea have DNA that is not in a nucleus.
Explanation:
Eukaryotes are the organisms that have well defined membrane bound nucleus and other membrane bound organelles in their cells. The domain eukarya include both unicellular and multicellular organisms. Archaea include the unicellular prokaryotic organisms that lack the membrane bound nucleus and membrane bound organelles.
hope this helped!
When Engelmann exposed photosynthetic algae to light in the presence of aerobic bacteria, he found that some wavelengths of light produced a higher rate of photosynthesis, as evidenced by the number of bacteria gathered near the algae. Based on his results, what color of light did Engelmann find associated with the highest rate of photosynthesis?
A. Red and blue
B. Yellow and green
C. Yellow
D. Red
Answer:
A. Red and blue
Explanation:
Theodor Wilhelm Engelmann, born in 1843 and died in 1909, was a German scientist. He was the scientist who detected which wavelengths of light produced the best photosynthetic activity in green alga. In his experiment, Engelmann exposed the photosynthetic algae to different wavelengths in the light spectrum. He then added aerobic (oxygen-dependent) algae to see where they will accumulate the most in order to detect the best wavelength for algae photosynthesis.
He discovered that the aerobic bacteria accumulated in the parts of the algae exposed to red and blue wavelength of light. This is because the algae exposed to the red and blue light produced more oxygen due to increased photosynthetic rate. This attracted the aerobic bacteria, which needs oxygen, to that particular area with that wavelength.
What is an igneous intrusion?
Answer:
Igneous intrusions form when magma cools and solidifies before it reaches the surface.
Explanation:
The temperature of the magma was dropped to low for it to continue moving and hardened where it was
How is glucose broken down in cellular respiration?
Answer: Glucose is broken down in the cytoplasm of the cell in a process called glycolysis. In stage two, the pyruvate molecules are transported into the mitochondria.
Explanation:
Glucose is broken down in cellular respiration into carbon dioxide and water.
What is cellular respiration?Cellular respiration is a series of metabolic processes that take place inside cells to transform biochemical energy from meals into a substance known as adenosine triphosphate (ATP).
A glucose molecule gradually decomposes into carbon dioxide and water during cellular respiration. In the process of transforming glucose, some ATP is directly created. But far more ATP is later created through a procedure known as oxidative phosphorylation.
Glycolysis is the process by which glucose is metabolized in the cytoplasm of the cell. The pyruvate molecules are delivered to the mitochondria in stage two.
Therefore, during cellular respiration, glucose is converted to carbon dioxide and water.
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Many parasites cause more harm to
the host than just feeding alone
because...
A. many parasites transmit disease.
B. many parasites become 'part' of the host
organism.
C. many parasites return with swarms.
What is healthcare ?
Answer:
The organized provision of medical care to individuals or a community.
match the phylum with the animal.
Answer:
1 - D
2 - A
3 - C
4 - B
Explanation:
Organisms may contain up to five levels of organization within their bodies. Which level of organization is best represented by
the liver?
Answer:
ORGAN
Explanation:
The liver is a very important organ in the system of multicellular organisms e.g humans. It performs various functions in the body e.g. detoxification, metabolism etc. As rightly said in this question, multicellular organisms are made up of five levels of organization.
Firstly, all living organisms are made up of CELLS, which are the basic unit of life. Cells come together to form the TISSUE. Tissues that perform similar functions come together to form the ORGAN, the organ that specifically play a similar role in the body are collectively called ORGAN SYSTEM. The various organ systems make up the whole ORGANISM.
In this five level of organization, the liver falls under the ORGAN category because it is made up of cells called Hepatocytes, which come together to form tissues. The tissues collectively make up the LIVER.
Answer:
organ
Explanation:
In each trial, you will add an indicator to the
mystery food sample. But you will also add the
indicator to a known substance and water. Why is
that important? Check all reasons.
to practice measuring volume using the
graduated pipette correctly
to match the mystery food sample to a definite
positive result (gelatin, oil, etc.)
to match the mystery food sample to a definite
negative result (water)
to increase the amount of data.
DONE
Answer:
to match the mystery food sample to a definite
positive result (gelatin, oil, etc.)
to match the mystery food sample to a definite
negative result (water)
An indicator is added to a known substance and water to match the mystery food sample to a definite
definitepositive result.
What are indicators?Indicators are substances which produce specific color changes in the presence of particular substances and these color changes are used to identify the substances.
In the trials to identify the mystery food sample, an indicator is added to a known substance and water to match the mystery food sample to a definite
definitepositive result.
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hey please help
When explaining the 'circle of life' to Simba, Mufasa says, 'When we die, our
bodies become the grass...! What does her mean?
Is this accurate?
Answer:
Hope i could help!
Explanation:
Mufasa is saying that when we die our bodies depcomose into the soil and feed the grass giving it minerals and nuitriants !
Which resource is a renewable resource?
coal
gemstones
metal
trees
Answer:
Trees
Explanation:
I say this because you are able to replant trees, making them renewable.
Trees are classified into the category of renewable resources. Thus, the correct option is D.
What is a Renewable resource?A renewable resource may be defined as an energy source that cannot be depleted and are able to supply a continuous source of clean energy.
Coal, gemstones, and metals are classified into the category of non-renewable resources because they can be depleted and do not available for longer times. They are utilized as time passes.
Therefore, the correct option for this question is D.
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If carbon in the atmosphere increase will carbon on earth increase too?
Answer:
When carbon dioxide concentrations rise, air temperatures go up
When carbon dioxide concentrations rise, air temperatures go up, and more water vapor evaporates into the atmosphere—which then amplifies greenhouse heating.
A fault that is formed when compression causes the hanging wall to move over the foot wall is a(n)
when your brakes fail, you should___.
a. shift to a higher gear
b. shift to a lower gear
c. not change your gear
d. alternate your gears
Answer:
d. alternate your gears
Explanation:
All viruses causes diseases and are called parasites True or False
Answer:False
Explanation:All viruses do not cause diseases,instead some are very beneficial,the help to prevent infections from the plague bacteria.But some viruses cause infectious diseases like HIV/AIDS,Ebola,Corona e.t.c and viruses are not called parasites because parasites are different from bacteria or viruses because their cells share many features with human cells and some parasites only replicate within a host organism but some multiply freely in the environment.
Based on the information in the graph, explain what physical process causes the cell to change size.
Answer:
Osmosis
Explanation:
Osmosis is the process in which solvent molecules move from lower to higher concentration through a semipermeable membrane.
When a cell is placed in a hypertonic solution, the cell loses water and moves from higher concentration to lower concentration that is from inside the cell to the water solution and causes shrinking of cell.
Shrinking of cell means decrease in size of the cell along with the passing time and cell loses all its water.
Hence, the correct answer is osmosis.
Rabbits are best described as _______.
a.
producers
b.
primary consumers
c.
secondary consumers
d.
tertiary consumers
Please select the best answer from the choices provided
A
B
C
D
______________________________
Rabbits are best described as primary consumers.
Because they are dependent upon producers for their food.
Hope it helps
Good luck on your assignment
______________________________
Rabbits can be best described as primary consumers. The correct option is b.
What are primary consumers?The 2nd trophic level is comprised of primary consumers. They are also known as herbivores. They just feed primary producers, including such plants or algae. A grasshopper, for example, is a primary consumer in the Everglades.
Primary consumers are rabbits because they are the first step up from autotrophs. Autotrophs, such as grass, are eaten by primary consumers such as rabbits.
The animals that eat the primary consumers are known as secondary consumers.
Herbivores are the primary consumers of plants. Primary consumers include caterpillars, insects, grasshoppers, termites, and hummingbirds, which only eat autotrophs (plants).
Rabbits are herbivores because they only eat plants - and herbivores are consumers because they eat plants to survive. Consumers include deer, grasshoppers, and rabbits.
Thus, the correct option is b.
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The act of doing what's best for the group is called
commensalism
O mutualism
altruism
symbiosis
Use what you know about natural selection to fill in the blanks in the hypothesis. It should answer the lab question, “What is the effect of the type of food available on the frequency of different types of bird beaks?”
Hypothesis: If the type of food available changes, then…
…because…
Answer: The independent variable of the lab is the type of food that is available to the birds. The food type changes in a given environment, then the amount of each type of bird beak will changes as birds with beaks more suited to the available food will consume more successfully over time.
Explanation:
With the changes in the available food, the frequency of the beak type will also change as birds with beaks better suited to the available food become more successful.
What are different types of bird beaks?There are many types of beaks in birds, some of these can be:
Crushing beak.Curved beak.Piercing and tearing beak.Birds of prey.Stickybeak.With the changes in the available food, the frequency of the beak type will also change as birds with beaks better suited to the available food become more successful.
Thus, this is the hypothesis which support the given scenario.
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what is one of the cause of mechanical weathering
A. acid rain
B. Oxidation
C.animal actions
D. Carbon
it is a cause of mechanical weathering the actions of animals, their physical actions.
What is Physical Weathering?Also called "mechanical weathering", it occurs through physical processes, with the fragmentation of rocks forming different types of sediments (eg sand). It is mainly influenced by temperature and pressure variation.
With this information, we can conclude that it is a cause of mechanical weathering the actions of animals, their physical actions.
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Describe the processes of transcription and translation.
Answer:
The process by which DNA is copied to RNA is called transcription, and RNA is used to produce proteins is called translation.
Explanation:
What is the name of the substance that a transported sediment moves through?
A. Fluid
B Medium
C. Glacier
D. Erosion
Answer:
i think it be glacier ...............
Read the passage from Darwin's journal. sorry its so long
The Amblyrhynchus, a remarkable genus of , is confined to this archipelago; there are two species, resembling each other in general form, one being terrestrial and the other aquatic. This latter species (A. cristatus) was first characterized . . . from its short, broad head, and strong claws of equal length, that its habits of life would turn out very peculiar, and different from those of its nearest ally, the iguana. It is extremely common on all the islands throughout the group, and lives exclusively on the rocky sea-beaches, being never found . . . even ten yards in-shore. It is a hideous-looking creature of a dirty black colour, stupid, and sluggish in its movements. The usual length of a full-grown one is about a yard, but there are some even four feet long; a large one weighed twenty pounds: on the island of Albemarle, they seem to grow to a greater size than elsewhere. Their tails are flattened sideways, and all four feet partially webbed. They are occasionally seen some hundred yards from the shore, swimming about; and Captain Collnett, in his voyage says, “They go to sea in herds a-fishing, and sun themselves on the rocks; and may be called alligators in miniature.” It must not, however, be supposed that they live on fish. When in the water, this lizard swims with perfect ease and quickness, by a serpentine movement of its body and flattened tail—the legs being motionless and closely collapsed on its sides. A seaman on board sank one with a heavy weight attached to it, thinking thus to kill it directly, but when an hour afterwards, he drew up the line, it was quite active. Their limbs and strong claws are admirably adapted for crawling over the rugged and fissured masses of lava, which everywhere from the coast. In such situations, a group of six or seven of these hideous reptiles may oftentimes be seen on the black rocks, a few feet above the surf, basking in the sun with outstretched legs.
What structural adaptation does the A. cristatus lizard have to help them climb rocks?
Awnsers:
A.strong claws
B.black color
C.flattened tail
D.webbed feet
Answer:
A) strong claws
Explanation:
cause if they werent strong they would break if they tried to climb the rocks... also the first guy said webbed feet cause there is a VERY SIMILAR question that asked how they could swim... its in the screenshot of what he was answering
The structural adaptation does the cristatus lizard have to help them climb rocks is strong claws.
Explain your answer briefly?If they were not strong they would break if they tried to climb the rocks. Also the first guy said webbed feet cause there is a very similar question that asked how they could swim.
Thus, option "A" is correct, strong claws.
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Which is part of the theory of evolution by natural selection?
A. All animals in a population are able to reproduce.
B. Animals have no variation among themselves.
C. Adaptations cannot be passed along to later generations.
D. Small changes add up over many generations.
Answer:
D. Small changes add up over many generations.
Explanation:
It's not A because not all animals in a population can always reproduce. Some may be infertile.
It's not B because genetic variety is something that occurs naturally. Because of genetic variety, random mutations can occur (these mutations later become adaptations).
It's not C because adaptations can be passed down to later generations. These adaptations can lead to natural selection which eventually leads to evolution.
Why did Owens and Darwins have quarrels and stopped being friends
Answer:
Explanation:
probably because they misunderstood eachother
and they can't stand each other again
HELP ASAPPPPP!!!!
A bat wing, an alligator leg, and a human arm are homologous structures.
Which fact about those structures best supports one aspect of theory of evolution?
The fact that the bone structures are similar supports the concept that birds evolved from mammals.
The fact that the bone structures are similar supports the concept that the animals shared a common ancestor.
The fact that the bone structures are completely different supports the concept that those organisms shared a common ancestor.
Answer:
The fact that the bone structures are similar supports the concept that the animals shared a common ancestor.
Explanation:
The similarity of the wings of bats, legs of alligators, and arms of humans in structure is an indication that animals shared a common ancestor according to the evolution theory.
Homologous organs are organs found in different organisms that are similar in structure but different in functionality.
The fact that these organs are similar to each other in morphological structure points to the fact that they might have evolved from the same ancestor according to evolutionists.
The wings of bats, legs of alligators, and arms of humans are all based on the same pentadactyl (five-digit) structure. However, a bat uses its wing to fly, alligators use their legs to crawl, while humans use their arms for a variety of purposes.
The homologous organ is one of the pieces of evidence used to support the evolution theory.
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What happens to the volume of a gas if the temperature is
lowered?
The volume will increase.
The volume will decrease.
Answer:
The volume will decrease.
Explanation:
Volume of gas is directly proportional to temperature. So if temperature decrease, volume will also decrease.
(Correct me if I am wrong)
Answer:
the volume will decrease
Explanation:
according to Charles Law, the gas and the temperature is proportional to each other.
also the equation V1÷T1=V2÷T2 proves this claim.
hope this helps
