Answer:
False.. the brain is part of the nervous system... thats the circulmatory sytem job..
Explanation:
Answer:
first one
Explanation:
im pretty sure that the answer is true im so sorry if it is wrong.
help i’m lost i have no clue what this is
Which statement describes the role of decomposers in moving nutrients through a food web?
Answer:
Every part of an ecosystem is vital to its survival – from the green plants to furry animals and microscopic bacteria. The group of organisms called decomposers forms the final link in the food chain. They break down dead animals and plants and return vital nutrients to the soil.
Explanation:
Why do males determine the sex of the offspring in humans?
1
they have testosterone
they have two different sex chromosomes
they have no sex chromosomes
males do not determine the sex of offspring in humans
o they have two of the same sex chromosomes
Answer:
males do not determine the sex of offspring
Explanation:
this question lacks intellectual merit on multiple levels of analysis
Which gene may play a role in patterning the forelimb?
Answer: Posterior HoxA and HoxD genes play important roles in patterning along the proximodistal axis of the forelimb (10–13). They also are required for activating and maintaining Shh expression in the developing forelimb (6, 7). mark brainliest
Explanation:
what is a scienctific theory
Answer:
" A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world."
Explanation:
- Eijiro <3
If an organism has a diploid number of 54, how many chromosomes will be in each of its gametes?
a. 54
b. 52
c. 27
d. 104
e. 108
There will be 27 chromosomes in each of its gametes.
• Meiosis is also called reductional division, in the process s-ex cells, that is, sperm and egg are produced, and each cell has the half number of chromosomes than its parent cells.
• In the given case, the organism is diploid with 54 chromosomes, that is, 2n = 54.
• Here n is the haploid number of chromosomes, in the given case, n = 27, that is, the haploid number of chromosomes is 27.
• Therefore, the sperm and egg cells have 27 number of chromosomes each.
Thus, the correct answer is option c, that is, 27.
To know more about:
https://brainly.com/question/23874505
WILL GIVE BRAINLIEST
NO LINKS NO LINKS NO LINKS
The immune system is the body's defense against infectious organisms and other invaders. Your immune system works by recognizing the difference between your body's cells and alien cells, allowing it to destroy anything that could be potentially harmful. Active and passive immunity play an important role in keeping you healthy.
What is the difference between passive and active immunity? (SC.912. L.14.52)
A. Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune while naturally acquired passive immunity occurs during pregnancy, in which certain antibodies are passed from the maternal into the fetal bloodstream
B. Both passive and active immunity are interchangeable
C. Passive and active immunity are both 1st line of defenses
D. Passive immunity occurs when a person is exposed to a virus and active immunity occurs when the immunity is passed on through breast feeding
Answer:
The answer would be A
Which of the following best describes how the RNA sequence specifies the production of an amino acid chain?
A.
Each individual RNA base codes for three amino acids.
B.
Each group of three RNA bases codes for an enzyme that connects amino acids.
C.
Each individual RNA base codes for a ribosome location where amino acids are assembled.
D.
Each group of three RNA bases codes for a specific amino acid.
Answer:
The answer is B Each group of three RNA bases codes for an enzyme that connects amino acids.
What is the BEST description of the beginning of secondary succession?
(a)Soil is already present.
(b)It begins on rock formations.
(c)Plants are already present.
(d)Pioneer species appear.
Answer:
C,,, Plants are already present.
Explanation:
Answer:
Plants are already present.
Explanation:
which of the following events does not occur in spermatogenesis
Answer:
The mitochondria and Golgi apparatus are packaged into the head of the sperm.
Explanation:
Spermatogenesis is the production of male germ cells. Sufficient stimulation with sex hormones, especially testosterone, and a lower temperature, which is achieved by placing the testicles in the scrotum, are required for the correct course of spermatogenesis. Sperm production has three phases: reproductive, growth and maturation. At the beginning of sperm development are spermatogonia, which are male primordial cells. They have a spherical shape and are located at the edges of the seminal canals. Spermatogonia is mitotically divided. On the one hand, in order to preserve their numbers, and on the other hand, their division produces primary spermatocytes, which lie above the layer of spermatogonia. Primary spermatocytes are diploid, but after the first meiotic division, haploid secondary spermatocytes are formed from them. They still have double chromatids, so a second meiotic division soon occurs, the product of which is spermatids. Spermatids are already fully haploid and do not divide further. Spermatids then undergo a process of spermiogenesis, in which the nucleus condenses, forming a flagellum and losing most of the cytoplasm and some organelles. Immature sperm travel through the seed-forming canals to the epididymis, where they are definitively matured. This whole process takes about 72 days.
The production of red blood cells is regulated by a feedback loop involving erythropoietin. In non-disease states, the production of red blood cells is equal to the destruction of red blood cells, thus maintaining sufficient red blood cells to deliver adequate oxygen to the body's tissues. However, when the number of red blood cells decrease and oxygen levels are low, erythropoietin is produced by the liver and kidneys to increase the production of red blood cells. Is this a positive or negative feedback loop
Answer:
Negative feedback.
Explanation:
The production of erythropoietin by the liver and kidneys is a negative feedback because with the production of erythropoietin, our body tends to move to become more stable state. The erythropoietin is produced by the liver and kidneys to increase the production of red blood cells if the quantity of red blood cells are lower than the normal range. If the number of red blood cells are decreases the oxygen level in our body is low that leads to unstable condition of the body but when the concentration of red blood cells increases, the body move towards stability.
DNA sequence that codes for glycine
What is not a job of the skin tissue?
Regulates body temperature
O Protects interior of the body
Contains nerves to sense external environment
O Provides support for bones
Answer:
provides support for bones
What does Hemoglobin pick up once it has given up all its oxygen molecules?
A. Carbon dioxide
B. Nitrogen
C. Carbon
Answer:
Carbon dioxide
Explanation:
Hb has been observed in the epithelial cells of human tissues including lungs neurons retina and. endometrium our group has recently demonstrated tha Hd is expressed by the cervicovaginal epithelial cells.
In the citric acid cycle when an aldol addition occurs in a biological system, how do the amino acids contained in the Citrate Synthase enzyme help facilitate the reaction
Answer:
Citrate Synthase facilitates the formation of citrate by deprotonating Acetyl CoA and by protonating the carbonyl oxygen of oxaloacetate
Explanation:
Citrate synthase is a key enzyme in the citric acid cycle that functions to catalyze the formation of citrate from oxaloacetate and acetyl-CoA: acetyl-CoA + oxaloacetate + H2O >> citrate + CoA-SH (Coenzyme A ). This enzyme contains three amino acids at its active site that work together to catalyze the conversion of acetyl-CoA and oxaloacetate into citrate. This active site acts by abstracting (deprotonating) a proton from the alpha carbon of Acetyl CoA which serves as the nucleophile. Subsequently, the active site of the enzyme also protonates the carbonyl oxygen of oxaloacetate, which then suffers nucleophilic attack and thereby facilitating nucleophilic substitution reaction.
URGENT WILL GIVE BRAINLINESS
Choose one of the following scenarios and answer the questions provided. Support your answers using scientific reasoning and discussing possible impacts to individuals, society, and the environment. Be sure to also discuss any medical or ethical issues that may apply. (10 points)
Scenario 1:
Genetic engineering can be used to create more productive strains of farm animals. By adding genes to an animal's DNA, the animal can be made to produce milk or meat containing vital nutrients that would not be found naturally in those products. This provides a greater amount of nutrients per serving of milk or meat.
Do you think that this type of genetic engineering should be pursued? Explain your answer. (5 points)
What are some possible impacts (positive and negative) of this type of genetic engineering on individuals, society, and the environment? (5 points)
Scenario 2:
In the future, doctors may be able to evaluate your DNA to check for genetic markers related to specific medical conditions or harmful reactions to medications. Your personalized genetic profile could be kept on record and referred to in order to develop personal medical treatment based on your unique DNA sequencing. Scientists have found that just small variations in a specific section of your DNA can help determine how well some medications can work for you or if they would be beneficial at all.
Would you want to have your DNA profile kept in your medical record as a reference for your doctors? Explain your answer. (2 points)
What are potential pros and cons of having such tests done and referring to DNA sequences when determining a patient's medical treatment? (5 points)
Describe how the availability of this technology might affect the frequency of genetic diseases in individuals and populations. (3 points)
Answer:
i tried my best (so many questions on scenario 2)
Explanation:
scenario 1: there are many positive and negative possible impacts that come with genetic engineering. A very negative outcome could come from just one mistake. But if there was a way to ensure that nothing could go wrong than the outcome would be an healthy new meat or milk that's packed with nutrients.
scenario 2: I think if this was a real thing i would be completely for it. If a person was to get their DNA checked then doctors would be able to prescribe a medication that would fit you. this could also prevent any allergic reactions to and medications or treatments.
I personally would want my DNA profile kept on record so that i can be treated with the right medications for me.
(The potential list pros and cons would probally look like this)
PROS
Makes for better treatmentCan show genetic markers related to specific medical conditions or harmful reactions to medications.can help determine how well some medications can work for you or if they would be beneficial at all.CONS
DNA screening may not show all conditionspatient may not be able to get treated if their condition is unknownSomething could go wrong during the screening a wrong treatment may be administered as a result.Explain why atmospheric concentrations of carbon dioxide are expected to increase in the future.
Answer:
because of factories and cars and smoking
Explanation:
What's muscles are affected?PLEASE ANSWER a-c
Answer:
do it in your self hahahahahaa
Explain what lyell and Darwin did to contribute to the theory of evolution
Answer:
so he can evolve humanity
Explanation:
Why the Carbon must be cycled through the carbon cycle?
Answer:
The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Since our planet and its atmosphere form a closed environment, the amount of carbon in this system does not change.
Discuss the importance of the change in CO with exercise?
Any trait that helps an organism survive and reproduce under a given set of environmental conditions
Answer:
tempature and time
Explanation:
How did a famous event change the course of the American Revolutionary War? in essay form pls
Answer:
The American Revolution was a political battle that took place between 1765 and 1783 during which colonists in the Thirteen American Colonies rejected the British monarchy and aristocracy, overthrew the authority of Great Britain, and founded the United States of America. See the fact file below for more information and American Revolution facts.
-The American Revolution, also known as the Revolutionary War, began in 1775.
-British soldiers and American patriots started the war with battles at Lexington and Concord, Massachusetts.Colonists in America wanted independence from England.
-The British government attempted to pass some laws, enforce several taxes, and increase more control over the colonies.
-The colonies strongly objected to these laws and taxes.
-They wanted England to have no control over them.
-For ten years before the war actually started, there was a lot of tension between England and the colonies.
-The colonies had no central government at the beginning of the war, so delegates from all the colonies were sent to form the first Continental Congress.
-George Washington, a former military officer and wealthy Virginian, was appointed Commander in Chief of the Continental Army.
-Members of the Continental Congress wrote a letter to King George of England outlining their complaints and declaring their independence from England.
-On July 4, 1776, the Continental Congress adopted the Declaration of Independence, in which the colonies declared their independence from England.
-The war ended in 1783, and the United States of America was born.
Explanation:
Please help!!!!!!!!!!!!
Answer:
253.585 square inches
Explanation:
The figure can be decomposed into 2 rectangles and a quarter circle.
Area of the figure = area of rectangle 1 + area of rectangle 2 + area of ¼(circle)
✔️Area of rectangle 1 = Length × width
Length = 10 in
Width = 6 in
Area of rectangle 1 = 10*6 = 60 in²
✔️Area of rectangle 2 = Length × width
Length = 10 in
Width = 6 + 7 = 13 in
Area of rectangle 2 = 10*13 = 130 in²
✔️Area of ¼(circle) = ¼(πr²)
r = 9 in
π = 3.14
Area of ¼(circle) = ¼(3.14*9²) = 63.585 in²
✅Area of the figure = 60 + 130 + 63.585 = 253.585 square inches
Guys, please take a look at this. I know that the answer is NOT A.
Answer:
C
Explanation:
There are 4 zeros, which fits the "at least three" criteria.
X plus a number means the root is negative on the graph, so all roots are negative.
(x+3) occurs twice meaning it has a multiplicity of 2.
Transcribe the following DNA strand: ATGCATTGCGAT
Globalization of the economy is increasing because of which of these factors? O A. Agreements limiting immigration OB. A decrease in international travel O C. Treaties expanding international trade O D. A decrease in demand for resources
Answer:
C is the best answer
Explanation:
This answer makes the most sense in the context of globalization.
Globalization of economy is increasing because of Treaties expanding international trades .
What is globalization ?The process by which businesses or other organizations develop international influence or start operating on an international scale can be referred as Globalization.
What are the factors of economic globalization?Three suggested factors accelerated economic globalization:
advancement of science and technology, market oriented economic reforms contributions by multinational corporations.Globalization of economy is increasing because of treaties expanding international trades .
Hence ,option C is correct
To learn more about globalization herehttps://brainly.com/question/15283031
#SPJ2
(3)
2.1
2.2
23
Provide labels for structures A, B and
State THREE functions of D
Fertilisation usually takes place at Y. Why wil
a blockage at X
2.3.1 Prevent fertilisation at Y
2.3.2 Not necessarily lead to infertity
(2)
3. Study the graph below which shows the menstrual
cycle and the influence of the different hormones on
it.
Answer:
i am pro i am pro i am pro i am pro
Which of the following does NOT occur during interphase?
1.each chromosome replicates
2.the nucleus disappears
3.microtubules extend from centrosomes
4.centrosomes are duplicated
Answer:
The nucleus disappears
Explanation:
The nucleus does not disappear in interphase but instead, the cell grows and splits to make another duplicate of the cell. Which means the cell will also split to make another duplicate nucleus.
Word Bank :
Condensation
Evaporation
Precipitation
Sublimation
Transportation
Using the works from the Word Bank, explain how the water cycle works. You must using complete sentences and using all of the words in the word bank. Please write you answer in 5 or more sentences using words used from the word bank.