Answer:
The environmental variation
Explanation:
Environmental variation has a big role for their beaks to change in a size and shape , that means if the birds like the condition of the place specially birds like to eat cactus fruits that is the reason for their beak rapid change
When does the separation of sister chromatids occur? A. Meiosis 1 B. Meiosis 2 C. Before Meiosis D. After Meiosis
Answer:
option B is correct that is meiosis 2
Explanation:
the two sister chromatids are separated from each other into two different cells during mitosis or during the second division of meiosis
How could gene therapy be used to treat diseases caused by mutated genes?
A. It could deliver a corrected version of a gene to a person's cells.
B. It could infect a person with a virus that is more harmful than the
mutation
O C. It could change a few bases in a piece of mutated DNA in only one
cell.
D. It could change genes in an individual so that offspring cannot get
the disease.
Answer:
a
Explanation:
Protein is:_________.
a. unique in that it is the only dietary component that contains oxygen.
b. important primarily because it builds strong bones and teeth.
c. made up of 20 different amino acids.
d. made up of branches of amino acids combined with branches of glucose.
Answer:
c. made up of 20 different amino acids.
Explanation:
Protein are macromolecules which have long chains of amino acids and they are used in the production of enzymes and aids metabolic activities of the body such as in the repair of worn out tissues and building up of muscle mass.
Protein is unique as it contains about 20 different amino acids. Carbohydrates also have Oxygen present in their compound. Calcium is the mineral responsible for building up of bones and teeth.
Define gray matter in the spinal cord. It is neural tissue that is dominated by the cell bodies of neurons, neuroglia, and unmyelinated axons, and surrounds the narrow central canal. It is neural tissue that contains large numbers of myelinated and unmyelinated axons. It contains the axons of motor neurons that extend into the periphery. It is neural tissue that contains the cell bodies of sensory neurons whose axons carry information to the spinal cord.
Answer:
It is neural tissue that is dominated by the cell bodies of neurons, neuroglia, and unmyelinated axons, and surrounds the narrow central canal.
Explanation:
Grey matter is a part of the central nervous system that is found on the surface of the brain.
It is a neural tissues that has alot of cell bodies of neurons, neuroglia and contain more unmyelinated axons and surronds the narrow central canal.it is distinguished from white matter because it has alot of cell bodies and unmyelinated axons and also it is not as white as white matter with greyish color.
Grey matter form spinal tracts which are the pathways where signals are sent from the brain to all part of the body.
Lethal genes (genes that result in the failure to develop a vital organ or metabolic pathway) are nearly always recessive. Animal breeders who discover a unique trait and selectively breed to increase the occurrence of that trait often encounter a noticeable increase in lethal genes. Why
Answer:
Though these genes are recessive, it is still very much possible for the offspring to inherit this, and the lethal gene is no different.
Explanation:
Suppose this animal breeder picked a dog who appeared to be happy and healthy and paired with another healthy dog. One of these healthy dogs may have this recessive lethal gene, though they have not been affected by it, their offspring may be likely to.
Which of the following is false? Unselected Under normal conditions, blood PO2 affects breathing only indirectly. Unselected Changes in arterial pH resulting from CO2 retention or metabolic factors act through the peripheral chemoreceptors. Unselected When arterial PO2 falls below 60 mm Hg, it becomes the major stimulus for respiration. Unselected Oxygen levels are the primary stimulant of respiration.
Answer:
The sentence that says: Blood PO2 affects respiration only indirectly, IT IS FALSE, since the partial pressure of oxygen gas together with carbon dioxide are factors that DIRECTLY affect respiration.
The sentence that says: Unselected changes in arterial pH as a result of CO2 retention or metabolic factors act through peripheral chemoreceptors. It is FALSE, since the central chemoreceptors together with the peripheral ones can detect the metabolic acidosis generated by the CO2 retention, this is how the CNS receptors capture the CO2 that crosses the blood-brain barrier and stimulates hyperventilation to compensate for this phenomenon and increase the plasma concentrations of partial oxygen pressures.
The sentence that says: in selecting When arterial PO2 falls below 60 mm Hg, it becomes the main stimulus for breathing, IT IS FALSE, since it not only encourages ventilation to promote oxygenation but also activates the renin-angiotensin-aldosterone in order to recover blood volume and thus achieve adequate blood pressure.
In addition, hypovolemia triggers tachycardia and weakening symptoms, which is why the drop in blood pressure is not the main stimulus for breathing.
Explanation:
Breathing is promoted by muscle contraction, medium and high temperatures (that is, in hot or hot climates), partial concentrations of oxygen and carbon dioxide both in the atmosphere and in our blood, and in situations of systemic imbalances such as metabolic acidosis or alkalosis.
Nitrogen-fixing bacteria in the roots of soybeans help provide a source of nitrogen to the plants, and in exchange, the bacteria obtain food from the plants. Which type of interaction is this
Answer:
symbiotic relationship
Explanation:
A symbiotic relationship is a relationship in which the members of the relationship get benefits from each other....... In roots of leguminuous plants , the bacterias are the only source for nitrogen by plants & in turn plants provide food to bacterias
Write down name and action of enzymes in small intestine
Answer:
The names of the digestive enzymes are lipases, proteases and peptidases, and amylases.
Explanation:
The function of the lipases is to split fatty acids off of fats and oils. The function of the proteases and peptidases is to split proteins into small peptides and amino acids. The function of the amylases is to split carbohydrates, such as starch and sugars, into simple sugars, like glucose.
What is the technical term for self-feeder
Answer:
a machine that automatically provides a supply of some material. "the feeder discharged feed into a trough for the livestock" Synonyms: tributary, eater, confluent, feeder, bird feeder, affluent, birdfeeder.
Explanation:
Eosinophils function in Eosinophils function in production of heparin. production of surface antigens for red blood cells. blood coagulation. antibody production. destroying antibody-labeled antigens.
Answer:
Destroying antibody labeled antigens.
Explanation:
Eosinophils are type of cells of the immune system or white blood cells that help to fight against infections or diseases.
Eosinophils have several functions and these include: they help in
movement to inflamed areas, they trsp substances, killing cells or destroy cells anti-parasitic and bactericidal activity, participating in immediate allergic reactions, and modulating inflammatory responses.
Eosinophils destroy antibody labeled antigens so as to destroy or kill the antigens in order to fight against infections. Eosinophils are produced from the bonemarrow and are minutes in the body . The are released into the blood and later coagulate to function as defence mechanism.
What three different genotypes are possible for an individual in this population
Answer:
With alleles 'A' and 'a' there are three possible genotypes AA, Aa and aa
Explanation:
Pls mark as brainliest answer
How does the structure of the skull help prevent injury to the brain?
A) The elastic bones of the skull help the skull reshape itself to prevent breakage.
B) The fused bones of the skull lessen the impact on the brain.
C) The spongy bones of the skull cause the ball to bounce off the head.
D) The joints in the skull move to prevent the football from hitting the head.
Answer: B
Explanation:
A true statement regarding atherosclerosis is which of the following? (Select all that apply.) Atherosclerosis obliterans occurs when the peripheral system of upper extremities are affected Atherosclerosis usually affects the coronary, cerebral, carotid, femoral arteries and the aorta. Atherosclerosis obliterans is used to describe atherosclerosis; the terms are interchangeable. Atherosclerosis is a result of medium and large arteries being occluded. Atherosclerosis is the dominant type of arteriosclerosis.
The ___________ hemisphere of the brain develops strengths in nonverbal areas such as comprehension of spatial relationships, recognition of patterns and drawings, music, and emotional expression.
Answer:
the right hemisphere
Explanation:
please help with this
Answer:
the 4th one
Explanation:
In northern Canada, a population of rabbits was predominantly white in color. The allele for white color is recessive while the allele for gray color is dominant. Over the last several decades, the average annual temperature of this area has increased and the long-term deposits of ice and snow have become scarce. In this case, the frequency of a previously rare allele becomes more frequent in the population. This is an example of
Answer:
The options are
A) nonrandom selection.
B) disruptive selection.
C) directional selection.
D) stabilizing selection.
The answer is C)directional selection.
Explanation:
Directional selection is a type of natural selection and occurrence in population genetics. It involves a phenotype which is most extreme being chosen over forms of phenotypes. It occurs over a period of time when the allele frequency completely aligns in the pattern of the extreme phenotype.
This explains why the frequency of a previously rare allele becomes more frequent in the population after a certain period of time.
Within a flock of birds, some birds have long narrow beaks, and other birds have short wide beaks. Environmental changes happen that make it harder for birds that have short wide beaks to find food. After several generations, most of the flock has long, narrow beaks. Which statement best describes the trait of the type of beak that a bird in this flock has
Answer:
Explanation:
Based on this scenario it the statement that represents this is that "Having a long, narrow beak is an inherited trait that is genetically passed down." An Inherited trait is a specific feature or characteristic of an organism that has been passed on to it in its genes through its ancestors. This usually happens as an adaptation to certain changes in the organism's environment in order for it to survive better.
Answer:
A: Having a long, narrow beak is an inherited trait that is genetically passed down.
Explanation:
A large asteroid impact occurs, kicking up dust that blocks the Sun and prevents plants from photosynthesizing. What would most likely happen as a result of the asteroid impact? More earthquakes would occur across the planet. Some plants would evolve to use dust as a source of food. Many plants would perform photosynthesis without sunlight. Many species would eventually die off because they lack a food source.
Answer:
Many species would eventually die off because they lack a food source.
Explanation:
Photosynthesis can be defined simply as the biological process of using light to synthesize food (in the form of glucose). It is a process that takes place in plants and involves the synthesis of sugar using inorganic products such as water and carbon dioxide.
[tex]6CO_2 + 6H_20 + (energy) → C_6H_1_2O_6 + 6O_2[/tex]
The process consists of two stages namely;
Light reactionLight independent reaction.The products from the light reaction are utilized in the light-independent reaction.
Hence, without light energy, the process of photosynthesis cannot proceed and plants will not be able to manufacture foods. Without foods, many plant species would die off.
Answer:
I'm pretty sure it's D and not C.
Explanation:
Food (plant) sources would be reduced since the dust is blocking the sun and not allowing Plants to grow.
After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body?
O Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being
Answer:
Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.
Explanation:
What's an electrochemical gradient?
The electrochemical gradient is the charge of an ion that is unevenly distributed across a membrane. For example potassium.
what is scientific advancement? describe characteristics
Scientific or technological advancement is the generation of information or the discovery of knowledge that advances the understanding of scientific relations or technology. This definition encompasses the definition of scientific advancement, advancement of scientific knowledge and technological advancement. The only difference is that scientific advancement and advancement of scientific knowledge relate to science whereas technological advancement relates to technology.
Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that’s rich in nutrients. The next season, farmers use this substance as a natural fertilizer for their crops. A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. This fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer. Answer the following questions to plan an investigation using the steps of the scientific method and help the student find the answer to his question. How would you conduct your investigation? In your answer, explain your independent and dependent variable?
Answer:
The student has observed that artificial fertilizer makes his plants grow faster and taller than plain soil. He knows that compost is a natural fertilizer. So, he infers that compost will make his plants grow at a faster rate than they grow in plain soil.
Explanation:
Why does mensuration occurs?
Explanation:
Mensuration is a natural process in which there is discharge of dead endometrial cells, unfertilized ovum, blood from broken capillaries and mucous membrane from uterus every month. As it is a natural process, it occurs every month to discharge the unwanted substances from our body. It makes our body free from the unwanted substances which can cause infection. It releases the unfertilized hormones prodoced in uterus of female.
hope it helps...
A marine biologist discovers a new marine animal that has a coelom, but it does not develop from the mesodermal tissues. Under which category should she classify this animal? A. pseudocoelomate B. acoelomate C. coelomate
B. acoelomate
Hope it helps
Even a hard solid food also becomes smooth slurry in the digestive system by the enzymes released at a particular times. This mechanism is an amazing fact.prepare a cartoon on it.
Answer:
ch blues dot d do it te stuff dd to
Answer:
Hi!! Please I can't prepare it in a cartoon form. You know this kind questions can't be answered in brainly. By the way:
Hope it helps!!Please mark me as the brainliest!!!Thanks!!!!
I will give the brainliest answer to someone who tells me what friction is
Answer:
friction is the force which comes against our force when we push a object
Which of the following organ systems are involved in the uptake and transport of materials required for life-sustaining processes? I. Digestive system II. Urinary system III. Nervous system IV. Circulatory system V. Reproductive system VI. Respiratory system
The following organ systems are involved in the uptake and transport of materials required for life-sustaining processes: the digestive system, circulatory system, and respiratory system, which are present in the I, IV, and VI.
What is the significance of the respiratory and digestive systems?Both of these systems are important for the body, as the digestive systems help in the digestion of the food so that the energy is taken from the food, and the main role of the digestive system is the breaking down of the food. The importance of the respiratory system is that it helps remove carbon dioxide from the body.
Hence, the following organ systems are involved in the uptake and transport of materials required for life-sustaining processes: the digestive system, circulatory system, and respiratory system, which are present in the I, IV, and VI.
Learn more about the respiratory and digestive systems here.
https://brainly.com/question/19459768
#SPJ6
Q. 35 One treatment for high blood pressure is taking diuretics that prevent the kidney collecting ducts from reabsorbing water. How would diuretics reduce blood pressure? By increasing blood volume By decreasing blood volume By increasing heart rate By decreasing heart rate
The diuretics will increase the volume of urine. That means more water is taken from the blood and excreted. According to Boyle's law, the volume is proportional to the pressure(p1v1=p2v2). It means that if we decrease the volume of blood we also decrease the pressure.
That means second option
Which best describes what happens if two waves meet and build on each other?
A. constructive interference
B. destructive interference
C. reflection
D. absorption
Answer:
constructive interference
Explanation:
when two waves build off of each other, they interfere with one another and construct. therefore, the answer is constructive interference.
When the path difference between subsequent crystal planes is equal to an integral number of electromagnetic radiation wavelengths, constructive interference occurs. Thus, option A is correct.
What is the constructive interference?Where the lines (which represent the peaks) cross over one another, constructive interference occurs. In other words, constructive interference occurs when two waves are in phase.
When two waves are entirely out of phase (a peak is located in the middle of two waves), destructive interference ensues.
Constructive interference is the phenomenon where the total amplitude of two waves is equal to the sum of the amplitudes of the separate waves when two waves are in phase and their maxima add.
Therefore, constructive interference best describes what happens if two waves meet and build on each other.
Learn more about constructive interference here:
https://brainly.com/question/16098226
#SPJ2
Which of these must exist for natural selection to cause change ?
Answer:
The answer is A.
Explanation: