Answer:
C. It’s reduces gene flow.
Explanation:
Reproductive isolation cause speciation as it reduces gene flow. Therefore, the correct option is C.
Mechanisms that prevent or restrict the exchange of genetic material (gene flow) between populations are called reproductive isolation. When reproductive isolation occurs, populations become genetically isolated from each other, resulting in different evolutionary paths. This may eventually lead to the speciation or evolution of new species. Reproductive isolation limits the exchange of genetic variation between populations by limiting gene flow. This means that genetic changes, such as mutations or genetic drift, that occur in one population do not affect other populations in the same way.
Therefore, the correct option is C.
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At each ______ foramen, the dura mater extends between adjacent vertebrae and fuses with the connective tissue layers that surround the ______.
Answer:
At each intervertebral foramen, the dura mater extends between adjacent vertebrae and fuses with the connective tissue layers that surround the spinal nerves.
Explanation:
The dura mater is the outermost meninge. It is around the spinal cord and the brain, and it protects these organs. In the spine, the dura mater extends between the intervertebral foramen. The intervertebral foramina are the areas between each vertebra that have spinal nerve projections. In these areas, the dura mater extends to seclude the space where the spinal cord is since it fusses with the tissue that is around each spinal nerve to stop the entrance of any pathogen to the spinal canal, which is the space that contains the spinal cord.
Which of the following biomolecules aids in cellular transport, metabolism, and
immunity?
O nucleic acids
O lipids
O carbohydrates
O proteins
Answer:
hey
Explanation:
the answer is PROTEINS
hope it's helpful for you
The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is called a(n)
Answer:
epimysium
Explanation:
Epimysium is a sheath of fibrous elastic tissue surrounding a muscle.
It is a layer of dense irregular connective tissue which ensheathes the entire muscle and protects muscles from friction against other muscles and bone
I need with this question please
What about cellulose makes it ideal for structural support?
Answer:The answer would be D!
Explanation:
A hydrogen bond is one of the strongest molecular bonds. :)
9. What is the economic importance of beekeeping both in terms of pollinating, crops, and obtaining products from the hive? 10. Explain how the spread of trypanosomiasis can be controlled by releasing male sterile tsetse flies in to an area. Date of submission July 07, 2021 Wednesday
Answer:
9. Bees play a very important role in relation to agricultural production. Indeed beekeeping is a vital part of our agricultural system. Apart from crop plants which are highly dependant on bees, the presence of honey bees also improves the quality and quantity of crops in general.
10. Use insect repellent. Permethrin-impregnated clothing and insect repellent have not been proved to be particularly effective against tsetse flies, but they will prevent other insect bites that can cause illness. The World Health Organization has targeted West African trypanosomiasis for elimination as a public health problem by 2020.
Explanation:
what is a dam
please tell
Answer:
a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply.
Which does not provide for enhanced genetic mixing?
A.Mix-matching
B.Random segregation
C.Crossing over
D.Fertilization that occurs through sexual reproduction
Answer:
A. Mix-matching
Explanation:
Sexual reproduction increases genetic variation in offspring by three main mechanisms: 1-random assortment of chromosomes during meiosis 2-genetic recombination, and 3-random fusion of gametes from different parents. In the first place, the pairs of homologous chromosomes are randomly oriented in metaphase I before they separate in Anaphase I. In consequence, daughter gamete cells receive different combinations of chromosomes. Second, recombination (also called crossing over) refers to the interchange of genetic material between non-sister chromatids during prophase I, thereby also increasing genetic variation in daughter cells. Third, the fusion of two haploid cells (i.e., gametes) in diploid organisms results in the formation of a single zygote cell that develops into a new organism, thereby the process of random fertilization between any two gametes generates different diploid zygotes, increasing thus genetic diversity.
Which of the following must be true for natural selection to occur?
O A. The ecosystem cannot contain predators.
B. A population cannot have competition for resources,
C. A population must be stable.
D. The ecosystem must have limited resources,
What is a substrate?
a. a molecule that acts as a catalyst
b. a place on the enzyme where the reaction occurs
c. a place on the product where the enzyme fits
d. a reactant that is catalyzed by an enzyme
Answer:
D- it connects to the active site to create an enzyme- substrate complex
Explanation:
:)
Hurry plz
Select each item in the left column and its match in the right column.
Answer:
Explanation:
Diploid - Having pairs of chromosomes
Chromosome - A strand of DNA wrapped around a protein
Haploid - Having only one set of unique chromosomes
DNA - The molecule that carries genetic information
Sex Chromosome - An X or Y chromosome
Homologous Chromosome - A pair of chromosomes that contain information for the same traits
For young men of age 20, there have been 150 rounds of DNA replication during sperm production as compared to only 23 rounds for a woman of age 20. That is a 6.5-fold greater number of cell divisions and proportionately greater opportunity for new point mutations. Yet, on average, 20-year-old men contribute only about twice as many new point mutations to their offspring as do women. How can you explain this discrepancy
Answer:
A plausible hypothesis is that deleterious germline mutations in sperm cells are removed by natural selection since sperms have to compete to fertilize the egg
Explanation:
Sperm cells need to travel through the cervix in order to reach the uterus and fertilize the egg. During this process (which is called 'fertilization'), approximately 300 million sperm cells have to compete in a race to reach an egg. During fertilization, the majority of sperm cells die off quickly because male germinal cells carry mutations that lead to abnormalities (e.g., many sperms have double heads, others no tail, etc). The sperm cells are considered to be physiologically weak because their normal functions can be easily disrupted by mutations and, simultaneously, they are under strong selective pressure to be selected during the sperm race. In consequence, deleterious germline male mutations are expected to be eliminated by natural selection, thereby sperms are selected before fertilization so only the strongest ones can compete in the race to fuse with the egg cell and thus develop one zygote.
Identify the producer in the following food chain: Oak tree, Caterpillar, Blue Jay, Bobcat
A. Caterpillar
B. Oak tree
C. Blue Jay
D. Bobcat
Explain Central Nervous System.
Explanation:
The central nervous system controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.
Explanation:
central nervous system is made up of the brain and spinal cord. it receives and integrate impulses from the receptors and then relays them to effector organs. it is the centre of co ordination.
Which type of seismic wave is recorded by a sesimoraged first during an earthquake ?
while obtaining the vitals during the seconary assessment, the EMT will assess the respirations. what woul dbe included about the respirations during the primary vitals assessment
Answer:
Rate and tidal volume
Explanation:
Tidal volume is the volume of air moved in or out of the lungs with each normal breath. A normal tidal volume is around 500 to 600 mL per inspiration and/or 6 to 7 mL per kilogram of body mass. An Emergency Medical Technician (EMT) should assess the respiratory rate (as well as rhythm and quality), having into account that a normal respiratory rate in an adult is 12 to 18 breaths per minute (BPM). Moreover, an appropriate tidal volume is also fundamental in assisting individuals in respiratory distress and arrest.
State any two human activities that have a direct impact on soil formation
Answer:
Nonetheless, some human activities have clear direct impacts. These include land use change, land management, land degradation, soil sealing, and mining. ... This in turn leads to loss of soil carbon and other nutrients and to changes in soil properties and in soil biodiversity.
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In some cases, people who test positive for genetic testing can receive preventive treatments. For example people who test positive for the breast cancer genes BRCA1 and BRCA2 can have a preventive mastectomy (breast removal surgery) before they develop the disease. In other cases, no preventive treatments are available, but frequent monitoring can help detect a disease earlier, when it's more easily treated.
What ethical or professional concerns does a health-care professional need to address when he or she has a patient who wants to prematurely treat a genetic disease? Do you think genetic testing should be part of normal preventive healthcare? Why or why not.
Answer:
Yes because genetic testing will provide enough evidice for the genetic disease. If you do so you can find diseases before they have long lasting effects on the hosts body
Explanation:
Plant species A has two alleles for leaf color. If plant species B has four alleles for leaf color, how will the two species differ in their appearance?
A. Species A will have more colors on each leaf than species B.
B. Species B will have fewer phenotypes for leaves than species A.
C. Species A will have fewer leaves per plant than species B.
D. Species B will have a greater variety of leaf colors than species A.
Answer: D
Explanation: It would be D because it has a larger amount and all species vary and leaves can be exactly the same they change color and evolve into different shapes
what does forage mean?
Answer:
to obtain food in the wilderness
Answer:
(of a person or animal) search widely for food or provisions.
food such as grass or hay for horses or cattle
Lisa is giving a speech about Pandas. Her speech includes 3 points: 1) where pandas live; 2) what pandas eat; and three) how pandas reproduce. What type of organization is Lisa using?
Answer:
Topical order.
Explanation:
Text structure can be defined as words used to describe how a writer or an author organizes his or her words in a literary work.
A topical order refers to a way of structuring a text or organizing a speech based on the main topic and dividing it into several subtopics in logical categories (steps).
In this scenario, Lisa is giving a speech about Pandas. Her speech includes 3 points:
1) Where pandas live.
2) What pandas eat.
3) How pandas reproduce.
Thus, the type of organization Lisa is using is topical.
In conclusion, a speech or text organized in a topical order has its main points organized as subtopics which are well related with the main topic.
Which of the following is not one of planes and sections of body orientation?
Answer:
They are the median plane, sagittal planes, coronal (frontal) planes and horizontal (transverse) planes
A lending library has a fixed charge for the first three days and an additional charge for each day thereafter. Saritha paid ₹27 for a book kept for seven days, while Susy paid ₹21 for the book she kept for five days. Find the fixed charge and the charge for each extra day.
Answer:
See the attachment.
Hope u understand
In the given question, 5₹ is the fixed charge and 3₹ is the charge for each extra day.
A fixed charge is a fee or cost that remains constant and does not vary with changes in usage or consumption.
Let the fixed charge for the first three days be x and the charge for each extra day be y.
From the given information, we can set up two equations:
For Saritha: [tex]\rm 3x + 4y = 27 -----(equation 1)[/tex]
For Susy: [tex]\rm 3x + 2y = 21 -----(equation 2)[/tex]
We can solve for x and y by using elimination or substitution:
Using elimination, we can multiply the second equation by 2 and subtract it from the first equation:
[tex]\rm 3x + 4y = 27[/tex]
[tex]\rm - (6x + 4y = 42)[/tex]
Solving above equations, we get:
[tex]\rm -3x = -15[/tex]
[tex]\rm x = 5[/tex]
Substituting x = 5 into one of the equations, we can solve for y:
[tex]\rm 3(5) + 4y = 27[/tex]
[tex]\rm 15 + 4y = 27[/tex]
[tex]\rm 4y = 12[/tex]
[tex]\rm y = 3[/tex]
Therefore, the fixed charge is ₹5 and the charge for each extra day is ₹3.
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The function of coenzyme A in the citric acid cycle is most like Group of answer choices a limousine driver dropping off a couple at the school prom. a kid jumping up and down on a trampoline. a frog that turns into a prince. throwing a baited hook into a lake and catching a fish.
Answer:
a limousine driver dropping off a couple at the school prom
Explanation:
The citric acid cycle, also known as the Krebs cycle, is a metabolic pathway by which carbohydrates, lipids and amino acids can be oxidized to carbon dioxide (CO2) and water (H2O). Coenzyme A (CoA) is a key coenzyme in the citric acid cycle. Coenzyme A acts as a carrier of acyl groups: its acetyl-coenzyme A form delivers the acetyl group to the citric acid cycle in order to be oxidized for energy production. During the citric acid cycle, Coenzyme A delivers the acetyl group to oxaloacetate (a four-carbon molecule), in order to form citrate (a six-carbon molecule that contains three carboxyl groups). Subsequently, citrate is oxidized and decarboxylated to produce a succinyl CoA, 2 CO2, and 2 NADH.
Which of the following parts of the brain is related to controlling water concentration and Osmosis?
A. Basal Ganglia
B. Thalamus
C. Hypothalamus
D. Pituitary Gland
Answer:
The correct answer is - D.
Explanation:
The pituitary gland is the gland that releases the ADH hormone that helps in reabsorption and regulates the osmoregulation and water concentration in the body. Antidiuretic hormone is an important hormone in water concentration regulation.
Hypothalamus is the part of the brain other than the Pituitary Gland that helps in controlling water concentration and Osmosis by controlling pituitary gland.
The correct answer is - D.Pituitary Gland
The structural integrity of bacteria is to peptidoglycan as the structural integrity of plant spores is to
Answer:
Lignin.
Explanation:
The structural integrity of plant spores is lignin that is present in many parts of the plant. This lignin provides hardness to the plant body which help them to stand the plant erect. If this lignin is not present in the plant body the plant will not stand erected. This lignin is present in large amount in the stem of plant body so that's why the lignin provides structural integrity to plant spores
Now you are going to use station data to write weather forecasts for several cities for today. Write your
forecasts in complete sentences. Assume you are writing for the general public Be sure to discuss
temperatures, winds, and possible precipitation
Answer:
Temperatures and direction of wind are the following.
Explanation:
Los Angeles has highest temperature i.e. 56 and lowest temperature of 47 degree Fahrenheit and wind moves towards Southwest direction.
Salt Lake city has highest temperature i.e. 42 and lowest temperature of 36 degree Fahrenheit and wind moves towards West direction.
Chicago II has highest temperature i.e. 28 and lowest temperature of 27degree Fahrenheit and wind moves towards Midwest direction.
Philadelphia has highest temperature and lowest temperature is the same i.e. 56 degree Fahrenheit and wind moves towards Northeast direction.
New Orleans has highest temperature i.e. 75 and lowest temperature of 70 degree Fahrenheit and wind moves towards South direction.
Is the cell an open or closed system? Explain your
answer using at least one example of a cell
organelle and its function
· In an open system matter and energy can be transferred
· In a closed system only energy can be exchanged
· In an isolated system neither matter nor energy can be exchanged
· The cell has to be an open system because it needs to exchange matter and energy and the only way to do so is through an open system
· As an open system the cell allows nutrients to enter the cell and waste products to exit the cell
· The cell does this through the use of a semi-permeable membrane
· It needs nutrients in the forms of glucose, ions and many other molecules.
· The nutrients can come into the cell through either passive or active transport
· In passive transport the nutrients naturally move from a higher concentration gradient to a concentration gradient.
· During active transport the particle need to move against the concentration gradient. To do this the cell needs energy to transport the materials. The energy comes in the form of ATP.
What happens if Rainsford refuses to play the game?
A.
he is set free
B.
he must swim to a passing boat
C.
Ivan gets him
D.
he lives with Zaroff forever
Answer:
C. Ivan gets him.
Explanation:
Richard Connell's "The Most Dangerous Game" is about Sanger Rainsford, a famous hunter who cared less about his prey. But then the tables turned and he became hunted instead of being the hunter, thereby presenting the theme of civilization and savagery, conscience, etc.
After Rainsford reached "Ship Trap Island", he discovered that there lived someone, Colonel Zaroff. But soon, he became aware of the "game" that the colonel likes to hunt. Refusing to be a part of the hunt, he was offered to be either the prey (which leaves him a choice of being free if he survives 3 days being hunted) or be killed anyway by Ivan, the Cossack.
Thus, the correct answer is option C.
is the outermost layer of the animal cell
[tex]\color{Black}\huge{Answer} [/tex]
It is the outermost layer in the animal cell and is found just inside the cell wall in the plantcell.Answer:
The Cell Membrane is the outer layer of a cell that separates it from the In both plant and animal cells, the cell membrane is found.
In an animal cell, it is located just within the cell wall, while in a plant cell, it is located just inside the cell wall. Cholesterol is present in the membrane of animal cells, but not in the membrane of plant cells.
Explanation:
An animal cell's outermost layer is the cell membrane.
It is found immediately under the outermost cell wall layer in plant cells.
It is made up of the following components:
a bilayer of phospholipids.Membrane proteins are proteins that are found in the membrane ofChannels in the membraneCholesterol.Receptors that send forth signals.During cell signaling, lipid rafts are used to attach intracellular proteins.It has a fluid or mosaic texture, and the molecules in the layer can move around.
