If fertilization does not occur, the uterine lining is shed in a process called
A metal surface becomes dull on exposure to air. phyiscal or chemical change?
How is feedback inhibition important to the body systems?
- The body is more efficient when it ignores feedback
- The body systems have a chance to work in isolation.
- reaction to a stimulus helps maintain homeostasis.
- reaction to a stimulus controls the external environment.
The correct answer is reaction to a stimulus helps maintain homeostasis.
In two or more complete sentences describe how a dam placed in a river can act as both a constructive and destructive force.
Answer:
Dams are constructed over the narrow valleys and it acts like a barrier that obstructs the water from the flow. There are both advantages as well as disadvantages in constructing a dam.
Some of the constructive force or advantages of dams are as follows-
1) It generates electricity .
2) It is often used for irrigation and industrial purposes.
3) it is used for farming purposes in water such as raising as well as harvesting of fishes and other aquatic plants.
Some disadvantages are-
1) It degrades water quality.
2) Aquatic organisms are affected thereby harming the ecosystem.
3) It obstructs the flow of water.
4) Failure of a dam causes flood.
the presence of gill-like slits in a human embryo is considered to be evidence for the
Out of the following given choices;
A. theory that fish and mammals have a common ancestry
B. theory that the first organisms on Earth were heterotrophs
C. close relationship between fish and mammalian reproductive patterns
D. close relationship between humans and annelids
The answer is A. Many embryos of the kingdom Animalia share similarities in the early stages depicting that they share a common ancestor. The gill slits is one example. They diverge in later stages to become Pharyngeal in the human embryo, while they differentiate into gills in fish.
Scientists think deforestation is one cause of _____, because carbon dioxide increases when people burn trees to clear land.
The correct answer is greenhouse effect..
Scientist think deforestation is one cause of greenhouse effect because carbon dioxide increases when people burn trees to clear land.
Conversion of forests into agricultural cause which might lead to deforestation. For example, overpopulation, infrastructure expansion, livestock, and logging.
The piece of dna that will be made into an rna and eventually a protein is called a
The shuffling of chromosomes that occurs during both fertilization and _____ can lead to genetic variation. the shuffling of chromosomes that occurs during both fertilization and _____ can lead to genetic variation. natural selection genetic drift mutation meiosis mitosis
Which of the following is an example of a metamorphic rock? Granite limestone marble pumice WILL MARK BRAINLIEST IF CORRECT HURRY
Answer:
The answer would actually be Marble
The example of a metamorphic rock is Mable.
What is metamorphic to k?Metarmorphic rock is a type of rock that is formed from solidification and transformation from igneous rocks or sedimentary rock to another form rock.
Therefore, The example of a metamorphic rock is Mable.
Learn more about metamorphic rock below.
https://brainly.com/question/1494081
#SPJ2
Which action must occur for an enzyme to catalyze a chemical reaction?
A. A noncompetitive inhibitor must first bind to an active site.
B. A competitive inhibitor must first bind to an active site.
C. A substrate must bind to an allosteric site of the enzyme.
D. A substrate must bind to an active site of the enzyme.
A complex big molecule that fastens the metabolic reactions without actually participating in it is called an enzyme. They fasten the formation and breakdown of the metabolic and catabolic reactions.
The actions that are required in a chemical reaction is:
Option: D. Active site of an enzyme must be attached to a substrate.
This can be explained as:
If a non-competitive binds to the active site then the substrate would not be able to bind to the site and a chemical reaction would not occur.If in the second option a competitive bind to the active site it will block the substrate to bind on the active site of the enzyme and the complex would not be able to form.If a substrate binds to an allosteric site then it will inhibit or activate the enzyme.Therefore, the enzyme can catalyze chemical reactions when the substrate binds to the active site.
To learn more about active sites and substrate follow the link:
https://brainly.com/question/410903
Many cars use electricity stored in lithium ion batteries as an alternative fuel. While there are many positive benefits to this technology, what negative impacts do they present?
Answer choices:
A)
Reduces air pollution
B)
Decreases carbon emissions
C)
Disposal of spent batteries
D)
Cut dependence on fossil fuels
Extracellular pathogens such as viruses and bacteria in body fluids are attacked by _____. view available hint(s)
Energy derived from hot rocks and fluids beneath the earth’s surface is _____. electro magnetic energy thermal energy geothermal energy heat energy
The answer is geothermal energy. This energy can be harnessed to generate electricity. The energy emanates from the deep core of the earth due to the radioactivity of the rocks in the region. The radioactivity heats Magma from the mantle which subsequently heats the rocks and fluids in the earth crust.
A flood kills most of the population of ants that live near river water
Answer:
A minor, usually, form of evolution that works best in small populations or in situation as you have described above.
Explanation:
Glycolysis and the citric acid cycle are similar in that they both produce ______
1. Where trenches do not exist, the steep continental slope merges more into a more gradual incline known as the continental____.
a. abyss
b. rise
c. zone
d. rift
2. Deep, steep-sided valleys that originate on the continental slope and may extend to the ocean basin floor are called____.
a. slope canyons
b. submarine canyons
c. abyssal plains
d. trenches
The right options are;
1. b. rise
2. b. submarine canyons
Continental rise is the bottom feature of water that is composed of thick sequences of continental substances that coalesced between the continental slope and the deep ocean floor. Continental rises occurs due to three sedimentary processes which are vertical accumulation of biogenic and clastic substances, mass wasting and the deposition from contour currents.
Submarine canyons are deep, narrow steep-sided valleys that emanate from the continental slope and sometimes may extend to the ocean basin floor (continental shelf). The physical appearance of submarine canyons resembles canyons formed by rivers on land.
Which of the following can be cofactors?
organic molecules
inorganic molecules
anions
cations
organic molecules and cations
Answer:
your answer is below
Explanation:
Is the chromosome number related to the complexity of the organism?
An area recently became prone to deforestation. Now there are few trees left in the vicinity. How would this change affect the cycles of Earth?
this dude....
C makes sense, but it may be wrong... apparently transpiration is how plant's make ground water evaporate and generate clouds... most common in rain forests. It seems counter intuitive, but without it the ground simply dries out due to regular evaporation and the sun...which would sap all of the moisture out of the ground.
Why is it important for arteries to have thicker lining/walls than veins?
A 60-year-old woman is hospitalized after losing an extensive amount of blood in a work-related accident. she tells the nurse that she heard the doctor say that she would keep feeling faint until her brain made more blood. the nurse recognizes that when the woman's blood pressure dropped, the pressure in her carotid arteries decreased. this was detected by baroreceptors in the carotid arteries, with which subsequent effect?
What are the steps (in the correct order) that link a change in the base sequence of a gene to a change in the phenotype of an organism like a mouse or a human? see section 16.2 (page 339) ?
The answer is DNA to RNA to protein. The change in DNA sequence will be reflected (through complementary base pairing) on the formed Messenger RNA during transcription. Subsequently, during translation of the mRNA to protein (by ribosomes), the amino acid sequence will change due to changes in the codons. Proteins, as you may know, are what determines the phenotype of organisms while DNA determines the genotype of the same organism.
Compaction is most significant as a lithification process for sedimentary rocks composed of sand-sized particles.
a. true
b. false
Answer:
False
Explanation:
Lithification is defined as the summation of compaction and cementation. Finer materials undergo compaction due to the force exerted by the overlying sediment layers. Clay particles (diameter < 0.002mm) undergo more compaction because they are finest in terms of size whereas silt (diameter 0.002-0.06mm) and sand-size sediments (0.06-2mm) are relatively coarser..
So, compaction is relatively a more significant process for clay particles than the silt and sand-sized particles.
Hence the given statement is false.
Compaction is NOT the most significant process as a lithification process for sedimentary rocks composed of sand-sized particles.
Sedimentary rocks are as a result of compaction, lithification and cementation.
Further ExplanationRock A rock is a naturally occurring substances that is a solid mixture of one or more minerals together with organic matter.Rocks are classified based on the chemical composition, texture and the way they are formed. Sedimentary rocks Sedimentary rocks are types of rocks that are formed through accumulation of sediments at low temperatures in tectonic layers and sinks. The process involved include compaction and cementation of sediments.These sediments includes; pebbles, shells, sand and other material fragments. The sediments accumulates in layers and then harden into rocks over a period of time.Examples of sedimentary rocks include; limestone and conglomerateLithification, cementation and compaction
Lithification is the process by which sediments combine to form sedimentary rocks. Compaction involves the consolidation of sediments due to the intense pressure and weight of the overlying deposits. Compaction takes place when sediments get buried.Cementation is the process through which dissolved minerals crystallize and glue grains of sediments together.Other types of rocks Metamorphic rocksThese are types of rocks that are formed as a result of changes that occurs due to intense heat and pressure under the surface of the earth. They result from action of heat and pressure on other rocks that pre-existed.These types of rocks are characterized by shiny crystals, ribbon-like layers among other features.Examples of metamorphic rocks are marble and gneissIgneous rocks These are types of rocks that are formed as a result hardening and cooling of magma from volcanic eruptions. Magma may cool inside the earth or when on the surface of the earth as a result of volcanic eruptions. The lava from this eruptions cools and hardens to form metamorphic rocks.Igneous rocks are glass-like and shiny with no crystals. They may also have tiny spaces and holes due to gas bubbles trapped during the cooling process.Examples of igneous rocks include obsidian and basalt.Key words: Rocks, lithification, cementation and compaction, sedimentary rocks, examples of sedimentary rocks, other types of rocks.
Learn more about;Rocks and rock types; https://brainly.com/question/1542533Sedimentary rocks;https://brainly.com/question/1542533Igneous rocks; https://brainly.com/question/1542533Metamorphic rocks; https://brainly.com/question/1542533Level; High school
Subject: Geography
Topic: Rocks
sub-topic: classification of rocks
Because the dna cannot leave the nucleus to get to the ribosomes, the genes for proteins must be transcribed into ______________ that can leave the nucleus.
The DNA in cells is transcribed into messenger RNA (mRNA), which leaves the nucleus and delivers the genetic code for specific proteins to the cytoplasm for protein synthesis. This process, called transcription, allows for proteins to be efficiently and properly synthesized in the cell.
Explanation:The DNA in cells cannot leave the nucleus to get to the ribosomes directly. Instead, the genes for proteins are transcribed into messenger RNA (mRNA) that can leave the nucleus. This mRNA is a single-stranded nucleic acid that delivers a copy of the specific gene's genetic code from the nucleus to the cytoplasm, where it interacts with ribosomes and other cellular equipment to manage protein synthesis.
During the process of transcription within the cell nucleus, mRNA molecules are produced, which are then modified and sent into the cytoplasm for translation. The transcript is decoded into a protein with the help of a ribosome and tRNA molecules. This system allows for the necessary proteins to be synthesized properly and at the right time, without having to expose the actual DNA.
Learn more about DNA to mRNA Transcription here:https://brainly.com/question/9955549
#SPJ12
19. (03.06 HC)
Some individuals have a mutated recessive allele and a homozygous individual is resistant to HIV infection and AIDS. Some populations have a high frequency of the mutant allele. What inference can be made about the mutant allele? (1 point)
Heterozygous individuals must be genetically advantaged even if they are not resistant to HIV.
The mutated allele must have developed and been acquired by many people before exposure to the virus.
The mutated allele must not be inherited by offspring or the disease would be close to eradication.
Being homozygous is an advantage for the mutated allele, while being heterozygous is a genetic disadvantage.
20. (03.07 MC)
Some portion of the milk produced in the United States comes from cows treated with genetically manipulated hormones that increase a cow's milk production. This increased production helps farmers make a better return on their investment in each cow. What aspect of this biotechnology must be fully understood before the benefits can be justified? (1 point)
Its effect on the cost of production
Its effect on other animals in the dairy
Its effect on the offspring of the cow
Its effect on consumers of the milk
21. (03.07 HC)
What issues will society need to resolve regarding this developing biotechnology, such as recombinant DNA technology? (1 point)
The issues regarding the cost of these procedures for patients
The question of who gets to benefit from these technologies
The issues surrounding its lack of medical benefits
The question of the long-term effects on consumers and the targeted species
22. (03.08 MC)
Marissa and Sean are in the process of adopting a baby. One of the documents the adoption agency provides is a full medical history of the birth mother. Why would the birth father's medical history also be important? (1 point)
The father has greater impact on the health of the baby than the mother.
The father's history will be important only when the child also becomes a parent.
The father's medical problems will always be expressed in the child.
The father's history will suggest potential medical problems in the baby.
23. (03.08 MC)
Paul's father and paternal grandfather both contracted but survived prostate cancer with treatment. Which answer best explains what this means for Paul? (1 point)
Paul should know he has a higher risk of prostate cancer and take preventative steps.
Paul should not worry about this history as both survived the cancer.
Paul should have his prostate removed as soon as possible.
Paul should live a healthy lifestyle and not worry about cancer at all.
24. (03.08 MC)
Which of the following would most severely affect a human population? (1 point)
A high degree of genetic similarity among people
A high degree of illegal drug use among young adults
A high number of smokers in a community
A high rate of mental disorders
25. (03.08 HC)
Meredith's office had a large group of people out sick at the same time with the flu. Which of the following is the most likely cause of the mass illness? (1 point)
Lack of cleanliness in the office kitchen
Mutation in the type of flu virus, making it resistant
Germs being spread by person-to-person contact
Inadequate ventilation system in the office
Answer:
19. The mutated allele must have developed and been acquired by many people before exposure to the virus.
20.
21. The issues surrounding its lack of medical benefits
22.
23. Paul should know he has a higher risk of prostate cancer and take preventative steps.
24. A high degree of genetic similarity among people
25. Germs being spread by person-to-person contact
Explanation:
Many diseases, including general diseases, require the general prevention methods. These include diagnostics, prevention, and monitoring.
Explain the effect that extreme vagus nerve stimulation had on the heart. how well did the results compare with your prediction?
Extreme stimulation of the vagus nerve can decrease heart rate significantly, causing symptoms ranging from dizziness to cardiac arrest. These effects are predictable given the vagus nerve's role in the parasympathetic nervous system.
Explanation:The vagus nerve, also known as the tenth cranial nerve, is primarily responsible for the regulation of internal organ functions. When the vagus nerve is stimulated excessively, it results in what is known as the vagal response. This response can significantly decrease the heart rate, leading to symptoms such as dizziness, fainting, or in extreme cases, cardiac arrest. The results of extreme vagus nerve stimulation on the heart are generally predictable based on understanding the function of the vagus nerve in the body's parasympathetic nervous system.
Learn more about Vagus nerve stimulation here:https://brainly.com/question/33465437
#SPJ6
You disrupt all hydrogen bonds in a protein. what level of structure will be preserved?
Why might genetically engineering a crop to be herbicide resistant result in producing weeds that are herbicide resistant?
The genetically engineered design is flawed so weeds are not affected.
The weeds that are not affected by the herbicide are able to reproduce.
Insects that are not affected by the herbicide can pollinate new species of weeds.
The weeds will become tolerant to the herbicide through repeated exposure.
Herbicide resistant weeds can emerge when genes flow from genetically engineered crops to weeds via cross-pollination, or the weeds develop resistance through repeated exposure to the herbicide.
Explanation:Genetically engineering a crop to be herbicide resistant might result in producing weeds that are herbicide resistant through a process known as gene flow. This happens when the genetically engineered crops cross-pollinate with nearby weeds. Some of the offspring of these weeds could inherit the herbicide resistance trait, making them more likely to survive and reproduce in an environment where that herbicide is being used. Over several generations, this could result in a population of weeds that are resistant to the herbicide. In other cases, weeds may become herbicide resistant through repeated exposure to the herbicide, which can lead to the evolution of herbicide resistance.
Learn more about Herbicide resistance here:
https://brainly.com/question/31268957
#SPJ6
What are some good safety tips for performing active aerobics and active recreation?
The letters represent diffrent types of what? Thank uu!
Answer:
option B
Explanation: