Answer:
Option (C).
Explanation:
Malthus had stated that the population growth was exponential. He explained the relationship between population growth and resources.
Malthus study on population growth and limited resources on human population has contributed to the Darwin's idea of evolution. Limited resources in a population allows the survival of some individual species only. Natural selection favors the selected population and species adapt in the environment and transfer beneficial allele to its next generation.
Thus, the correct answer is option (D).
Answer:
A
Explanation:
The light-independent reactions of photosynthesis need
a. oxygen.
b. carbon dioxide.
c. cellulose.
d. water.
Answer:
I believe its option b. carbon dioxide.
The correct answer is b. carbon dioxide, which is required for the light-independent reactions of photosynthesis to synthesize sugars.
The light-independent reactions of photosynthesis, also known as the Calvin Cycle or the dark reactions, require carbon dioxide to produce glucose (sugar). Therefore, the correct answer to the student's question is b. carbon dioxide. These reactions do not require light and instead utilize the ATP and NADPH produced during the light-dependent reactions to synthesize carbohydrates by fixing carbon dioxide. They take place in the stroma of the chloroplasts, where carbon dioxide enters the photosynthetic tissue through stomata and is then incorporated into organic molecules in a process known as carbon fixation.
Which of the following statements does NOT correctly describe tissue perfusion in the cardiovascular system?
a. Perfusion of the kidneys is important for urine formation.
b. Autonomic nervous system regulation of blood pressure is an example of extrinsic control of tissue perfusion.
c. The myogenic response is an example of extrinsic control of tissue perfusion.
d. Accumulation of local metabolites triggering dilation of arterioles is an example of intrinsic control of tissue perfusion.
Final answer:
The statement that incorrectly describes tissue perfusion is that the myogenic response is an example of extrinsic control, while it is an example of intrinsic control. Other options given correctly describe aspects of tissue perfusion involving kidney function, autonomic nervous system regulation, and local metabolite accumulation. So the correct option is c.
Explanation:
You asked which statement does NOT correctly describe tissue perfusion in the cardiovascular system. The correct answer is that the myogenic response is an example of intrinsic control of tissue perfusion, not extrinsic. Hence, the statement that does NOT correctly describe tissue perfusion is:
c. The myogenic response is an example of extrinsic control of tissue perfusion.The myogenic response is a reaction to the stretching of the smooth muscle in the walls of arterioles in response to changes in blood flow through the vessel. It serves as a protective function to maintain homeostasis, trying to keep blood flow and pressure within certain limits to prevent damage to organs and tissues.
Here are the explanations for the other options that do correctly describe tissue perfusion:
Perfusion of the kidneys is important for urine formation as it involves the filtration of blood, removing waste and excess substances to produce urine.Autonomic nervous system regulation of blood pressure, such as through the release of epinephrine and norepinephrine, is an extrinsic control mechanism affecting tissue perfusion.Accumulation of local metabolites triggering dilation of arterioles is indeed an intrinsic control of tissue perfusion, helping regions with increased metabolic activity receive more blood.How many nuclear power plants are in the United States?
there are 60
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The rise of methicillin-resistant Staphylococcus aureus (MRSA) can be considered to be an example of artificial selection because A) humans purposefully raise MRSA in large fermenters in an attempt to make the bacteria ever-more resistant. B) S. aureus is cultivated by humans to replenish the soil with nutrients. C) humans synthesize methicillin and create environments in which bacteria frequently come into contact with methicillin. D) Humans are becoming resistant to bacteria by taking methicillin.
Answer:
C
Explanation:
Frequent exposure of Staphylococcus aureus methicillin by humans – such as through excessive use of non-prescribed antibiotics-, the rate of mutations in the bacteria population increases. This results to increases chances that a mutant will develop that is resistant to methicilin. Once a mutant develops, its population increases even when exposed to the antibiotic because it is resistant to methicilin. Bacteria also exchange genetic material horizontally so the gene for resistance will quickly spread in a population. This results in MRSA that is hard to eradicate.
Final answer:
The correct answer is C) Humans synthesize methicillin and create environments that inadvertently select for methicillin-resistant Staphylococcus aureus (MRSA), representing artificial selection. This emphasizes the need for careful antibiotic management to combat the rise of drug-resistant strains like MRSA.
Explanation:
The rise of methicillin-resistant Staphylococcus aureus (MRSA) can be considered an example of artificial selection because C) humans synthesize methicillin and create environments in which bacteria frequently come into contact with methicillin. This does not imply an intentional breeding program like what might be suggested by option A, rather it is the consequence of the use of antibiotics like methicillin in medicine which has inadvertently favored the survival of resistant bacterial strains. Unlike natural selection, artificial selection in this context refers to human actions that have inadvertently encouraged the proliferation and evolution of antibiotic-resistant bacteria.
The emergence of MRSA has caused significant concern within the medical community because the strain is resistant to a range of commonly used antibiotics, thereby presenting a real threat of serious infections that are difficult to treat. Moreover, MRSA's ability to transfer genes conferring resistance to other bacteria, potentially becoming a 'superbug', adds to the urgency in managing the use of antibiotics and developing measures to counteract resistance.
Biology Help!
The conversion of inorganic carbon to organic carbon by plants during photosynthesis is known as _[blank]_.
filtration
immigration
reabsorption
primary production
Answer:
The conversion of inorganic carbon to organic carbon by plants during photosynthesis is known as REABSORPTION...
The conversion of inorganic carbon to organic carbon by plants during photosynthesis is known as REABSORPTION. Thus, option "C" is correct.
How Kidneys play an important role in the urine formation?Kidneys play an important role in urine formation, the body's homeostasis and getting rid of the body from the excretory waste products. The three main processes of urine formation is glomerular filtration, absorption and tubular secretion.
The absorption of water in the proximal convoluted tubule is important and necessary for osmosis maintenance and is termed as obligatory water reabsorption. The water reabsorption in the distal convoluted tubule is under the ADH control and termed as facultative water reabsorption.
Thus, option "C" is correct.
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This is an organism that relies on other organisms for its food and energy supply; also called a heterotroph.
Final answer:
Organisms that depend on other creatures for sustenance and energy are known as heterotrophs, or consumers. They cannot photosynthesize and include animals, fungi, and some bacteria and plants. Energy-wise, they rely on autotrophs like plants that synthesize their own food.
Explanation:
Heterotrophs and Consumers
An organism that relies on other organisms for its food and energy supply is called a heterotroph. These organisms, also known as consumers, cannot produce their own food through processes like photosynthesis. Consequently, they must eat or absorb organic material from other living things, including plants and animals. Heterotrophs play a vital role in ecosystems and can be classified based on their dietary habits into groups such as herbivores, carnivores, omnivores, and decomposers.
Heterotrophs include a wide range of organisms like all animals, fungi, many protists, and bacteria. These consumers show great diversity, but they all share a dependence on autotrophs (organisms that produce their own food using sunlight, such as plants and algae) for their energy. This connection means that the energy heterotrophs use can be traced back to autotrophs and the process of photosynthesis. Without autotrophs, heterotrophic life on Earth would not be able to sustain itself.
which statement is the best summary of the model?
A-a series of aerobic and anaerobic reactions take place in cells
B- the sun's energy moves through trophic levels in a food chain
C-light energy is converted into stored chemical energy plants.
D- food molecules are broken down in the cells if living things.
Answer:
C
Explanation:
The diagram above shows chloroplast, where photosynthesis takes place
Fossils_____. Disprove evolution form whenever an organism dies can only form when organisms are buried alive support evolution because they show changes in an organisms structure
AnswerDISENEGRATE
Explanation:
The petroleum industry uses deep-well injection to dispose of its hazardous waste.
Though the wastes are pumped into porous rock, the industry claims the wells are safe because
Answer: because they are situated near aquifers
Explanation:
Aquifers is a underground layer of rock which can hold and release water in desirable amounts so petroleum industries claims the well are safe.
if this person had son,what,sex chromosome did they give their son?
A.X
B.Y
C.neither
D.we need more information to know for sure
Answer:
B
Explanation:
Y chromosomes are the male chromosome. A person with an XY sex chromosome pair will be male while that with an XX sex chromosome pair will be female. This is because the Y chromosome has a male-determining gene called the SRY. This gene is responsible for the development of testis.
They live on every continent except antarctica
Answer:
A dung beetle is the answer.
Help me!!!
How can recycling water improve the environment?
How does your autonomic nervous system use feedback to keep you healthy?
A. It makes you perspire after danger has passed.
B. It decreases your hearing after danger has passed
C. It speeds up your heart rate to help you deal with danger.
D. It slows down your breathing to help you deal with danger
Answer:it speeds up your heart rate to help you deal with danger.
Explanation:
A gene editing technology called CRISPR-Cas9 uses cellular machinery to change the cell's genetic material. How might this technology be useful in treating diseases like cancer? A. CRISPR-Cas9 could act as an antioxidant in a person's cells, removing toxins that might otherwise damage DNA. B. CRISPR-Cas9 could remove from patients the genetic mutations that cause a specific cancer before the cancer begins. C. CRISPR-Cas9 could remove any DNA damage caused by smoking. D. CRISPR-Cas9 could be a substitute for chemotherapy
Answer:
B
Explanation:
CRISPR-Cas9 is a gene-editing mechanism that is harnessed from bacteria’s immune system used to cut apart foreign genetic material such as that of bacteriophages. CRISPR-Ca9 has a guide sequence that is used to identify the target sequence. The Cas9 enzyme cuts this target DNA and is replaced with the required piece.
In cancer treatment, the mutated DNA can be replaced, this way, with the wild type.
CRISPR-Cas9 technology is useful in treating diseases like cancer as it could remove from patients the genetic mutations that cause a specific cancer before the cancer begins. The correct option is B.
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread.Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements.While these symptoms may indicate cancer, they can also have other causes.
Though cancer it not completely curable the rate of it's invasion can be slowed down by use of CRISPR-Cas9 technology that removes mutations which cause cancer before it begins.
Thus, option B is correct.
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What is the metabolic abnormality that underlies the characteristic symptoms of diabetes mellitus?
Answer:
The metabolic abnormality that is responsible for diabetes mellitus is THE INABILITY OF THE BODY CELLS TO ABSORB ENOUGH GLUCOSE FROM THE BLOOD.
Explanation:
Diabetes mellitus is a metabolic disease condition in which the glucose molecules that are present in the blood are unable to enter the body cells. This may happen as a result of lack of insulin hormone or inability of insulin hormone to carry out its functions. People with diabetes mellitus usually have high amount of glucose in their blood because of the inability of the glucose molecules to enter the body cells. Because the glucose molecules can not enter the body cells for energy utilization, diabetic patients usually feel weak, thirsty and hungry and the excess sugar in their blood usually come out with urine when they urinate.
Diabetes treatment usually involve the use of artificial insulin to lower the raised glucose levels.
When creating a graph, the ____________ goes on the x axis and the _____________ goes on the y axis. A. dependent variable, independent variable B. experimental group, control group C. independent variable, dependent variable D. control group, experimental group
C. independent variable, dependent variable
What is Graph?
A graph is a mathematical representation of a network and it describes the relationship between lines and points. A graph consists of some points and lines between them. The length of the lines and the position of the points do not matter. Each object in a graph is called a node.
There are many different types of graphs, such as
connected and disconnected graphs, bipartite graphs, weighted graphs, directed and undirected graphs, and simple graphsLearn more about Graph here
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How does carbon move from the atmosphere to plants
Answer:
We breathe out carbon dioxide
In what ways are the respiratory structures of all animals similar?
Accuracy in the translation of mRNA into the sequence of amino acids in a polypeptide depends on specificity in which of the following?
1) binding of ribosomes to mRNA 2) shape of the A and P sites of ribosomes 3) attachment of amino acids to tRNAs 4) bonding of the anticodon the codon and the attachment of amino acids to tRNAs
Final answer:
The accuracy of protein synthesis during translation relies on the attachment of the correct amino acids to tRNAs and the proper pairing of tRNA anticodons with mRNA codons.
Explanation:
Accuracy in the translation of mRNA into the sequence of amino acids in a polypeptide depends specifically on the attachment of amino acids to tRNAs and the subsequent bonding of the anticodon to the codon. During the process of translation, the ribosome facilitates the correct matching of tRNA anticodons with mRNA codons. Each tRNA has an anticodon that is complementary to an mRNA codon, and it carries a corresponding amino acid.
When the tRNA anticodon base pairs correctly with the mRNA codon, the ribosome catalyzes the formation of a peptide bond between the present amino acid and the growing polypeptide chain. This precise anticodon-codon interaction ensures the correct sequence of amino acids in the resulting protein.
The organ which produces gametes in lower plants, some protists, and some fungi is called the:
archegonium
antheridium
gametangium
Answer:
I believe it is called the gametangium, hope it helps :)
The amount of time it takes for one-half of the original amount of an isotope to decay is known as its ____.
Question 9 options:
correlation
half-life
period
radioactivity
Answer:
half-life
Explanation:
True or false. the reptilian amniote egg with its protective outer layers is a landmark in evolution of life on land.
Answer:
TRUE
Explanation:
Final answer:
The reptilian amniote egg with its protective outer layers is indeed a landmark in the evolution of life on land. - True
Explanation:
The amniotic egg is a crucial adaptation for fully terrestrial vertebrates, particularly reptiles, birds, and mammals. The development of amniotic membranes provided embryos with their aquatic environment, which significantly reduced the dependence on water for development and allowed amniotes to invade drier areas. This transition from water to land is marked by the difference between amphibians, which have shell-less eggs and are restricted to moist environments, and amniotes, which have protective shelled eggs.
Reptile eggs are surrounded by leathery or hard shells that aid in water retention and protection against desiccation. The amniotic egg consists of several parts that contribute to its success as a terrestrial adaptation: the amnion, which creates a fluid-filled cavity; the chorion, allowing for gas exchange; the yolk sac, providing nutrition; and the allantois, handling waste management and facilitating respiration.
Where does water that seeps into the ground collect
A. Bedrock
B. A divide
C. An aquifer
D. A watershed
Answer:
I think it would be an aquifer.
Explanation:
Physical characteristics of down syndrome
Summarize DNA's importance to you A. Contains your brain B. Produce energy for your body C. DNA contains the instructions for who you are. D. Make up cells that allow you to reproduce
Answer:
C
Explanation:
DNA is what makes us each human and different!
An inflammation of the kidney, most commonly caused by toxins, infection, or an autoimmune disease, is called
Answer:
It's called "Nephritis."
Explanation:
Hope my answer has helped you!
Fish play an important role in coral reef health as well. All BUT one effect listed below is the result of the fish populations within the coral reef.
Answer: When corals are babies floating in the plankton, fish swim with them and protect them from harm.
Explanation: I just got it right. 100% trust
Incomplete metamorphosis is a change from ( pupa, larva, adult) to ( pupa, larva, adult) that takes place in a series of steps.
Which is the significance of the apical meristem? A. It helps form the transport system in plants. B. It enables photosynthesis by facilitating primary growth of the plant. C. It provides strength to the plant by facilitating secondary growth.
Answer:
c. it provides strength to the plant by facilitating secondary growth
Explanation:
apical meristem is a region of actively dividing cells and found at both tip of plants that are shoots and roots, that are vitals for the plants to survive for many reason so yea i had nothing to say anymore i'm new with bio stuff
what do we call a group of genes that work together?
A.operon
B.locus
C.hox group
A group of genes that work together is called operon .
What is called operon?An operon is a cluster of genes that are transcribed together to give a single messenger RNA (mRNA) molecule, which therefore encodes multiple proteins
What makes up an operon?An operon consists of an operator, promoter, regulator, and structural genes.
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