what is the function of smooth endoplasmic reticulum ?
Answers
Answer:
Producing enzymes that help detoxify compounds.
Explanation:
Related Questions
17. When transcription occurs in eukaryotic cells, a DNA strand is copied to an mRNA strand that contains introns and exons. Which of the two is needed for the
production of proteins, and why?
Exons because they are coding sequences.
Introns because they are non-coding sequences.
Introns because they are coding sequences.
Exons because they are non-coding sequences
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Answer:
Exons because they are coding sequences
Explanation:
The sections of DNA (or RNA) that code for proteins are called exons.
Energy is transformed, but is never _______, this is known as the law of _______________.
Answers
Answer:
created nor destroyed, law of conservation of energy
Explanation:
Select all that apply
Secreted antibody molecules ______.
circulate freely in the lymph
circulate freely in the tissue fluids
are trapped in tissues
circulate freely in the blood
Answer: circulate freely in the lymph
circulate freely in the tissue fluids
circulate freely in the blood
Answers
Secreted antibody molecules:
Circulate freely in the lymph Circulate freely in the tissue fluids Circulate freely in the blood. About antibodyAntibody is a glycoprotein with a specific structure secreted from absorbent B-lymphocytes which have been activated to become plasma cells,as a response to certain antigen and reactive to that antigen.
The human immunity system is determined by the ability of the body to produce antibodies against antigens. Antibodies can be found in the blood or glands of the body of other vertebrates, and are used by the immune system to identify and neutralize foreign bodies such as bacteria and viruses. Antibody molecules circulate in the blood vessels and enter the body's tissues by going through a round of inflammation. They are made of little basic structures called chains. Each antibody has two heavy chains and two light chains.
There are several different types of antibody heavy chains, and several different types of antibodies, which are assigned to different classes (en:isotypes) based on each heavy chain. Five different isotypes of antibodies are known to exist in the mammalian body and play different roles and help direct the appropriate immune response for each different type of foreign body that enters the body,namely: IgG, IgM, IgA, IgD and IgE, which have a difference in area C.
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what technological advantages allow seafaring Arabs during the middle Ages to dominate the Mediterian Sea and trade with east Africa, India, and southeast Asia?
Answers
The technological advantages that allowed seafaring Arabs during the Middle Ages were their retaining ancient and classical European discoveries, military engineering, metallurgy, glassmaking, etc.
What are technologies?Technologies are advancements in old things. These advancements are based on scientific theories and experiments. The products that were in demand were exported by Arabs like spices, stones, metals, silk, etc.
Thus, Arabs could navigate the seas thanks to technological advantages such as preserving classical and ancient European discoveries, military engineering, metallurgy, glassmaking, etc.
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What happens to chromosomes when a cell is about to divide?.
Answers
Answer:
Division
Explanation:
Chromosomes might divide to form chromatids at the centromere
Write a short paragraph that explains the central idea of the article. Use at least two details from the article to support your response.
Dozens of earthquakes hit Hawaii as the world's largest volcano erupts
On November 27, Mauna Loa erupted for the first time in nearly 40 years. Located in Hawaii, Mauna Loa is the world's largest active volcano. Volcanoes are openings or vents where lava, small rocks, and steam erupt onto the Earth's surface. Melted rock that comes up from inside the Earth and out of a volcano is lava. The Mauna Loa eruption occurred at the Moku'āweoweo summit caldera. This is a large sunken basin at the summit — or highest point — of the volcano.
Following the eruption, dozens of earthquakes swarmed the region — one of them a magnitude 4.2 quake. Magnitude is a number that characterizes the relative size of an earthquake from 1 to 9.
Remain Vigilant
Officials issued an ashfall advisory for Hawaii's Big Island and asked residents to remain vigilant. So far the eruption's lava flows pose no risk to people living downhill from the eruption, according to Hawaii's Tourism Agency.
Map showing lava flow of Mauna Loa from the years 1843 to 1984.
Image 1. The volcano's last eruption was in 1984, when it sent a lava flow close to the city of Hilo.
"At this time, lava flows are contained within the summit area and are not threatening downslope communities," said officials from the U.S. Geological Survey (USGS). The USGS is a government agency that collects information to help monitor natural hazards such as earthquakes. They warned, however, that the location and advance of lava flows can change rapidly.
The USGS's Hawaiian Volcano Observatory noted that it is set to perform flights to assess the eruption. They warned that "winds may carry volcanic gas and possibly fine ash and Pele's hair downwind." Pele's hair are thin strands of volcanic glass formed from cooling lava. The glass is sometimes carried into the air by strong winds and is sharp enough to tear skin and eyes.
Monitoring The Volcano
Mauna Loa takes up more than half of Hawaii's Big Island. It rises 13,679 feet (4,169 meters) above the Pacific Ocean, according to the USGS. The volcano is fairly active, having erupted 33 times since its first well-documented eruption in 1843. Its last eruption was in 1984 when it sent a lava flow close to the city of Hilo. After that, Mauna Loa entered its longest dormant period in recorded history. Periods of time when the volcano is not erupting, but could in the future, are volcanic dormant periods.
Scientists tracked an uptick in earthquake frequency beginning in June with five to 10 earthquakes a day. By September, the warning signs of an eruption increased. The number of earthquakes grew to around 40 a day in October.
Answers
The central idea that the text has is that it tells us of the fact that the scientists were talking about the eruption as a way of sending out warning to the people.
The parts that agree with this are: By September, the warning signs of an eruption increased. Officials issued an ashfall advisory for Hawaii's Big Island and asked residents to remain vigilant
What is the central idea of a passage?The most significant thought that the author wishes to convey to the reader is the key theme of a passage or story. It is possible to state the main notion immediately. The main idea is stated by the author.
The key thought or concept that the author wishes to convey to the readers about the subject is the main idea of a paragraph.
The main premise of the text is that it informs us of the fact that experts were discussing the eruption as a means of alerting the public.
The following passages support this: By September, there were more eruption warning indicators.
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What is a zone of inhibition? how did you measure the zone of inhibition? which unit of measurement was used?
Answers
The Zone of Inhibition is a circular ideal getaway the antibiotic spot where bacteria colonies do not grow. The zone of inhibition can be used to assess the bacteria's susceptibility to the antibiotic.
What is the standard size of zone of inhibition?For four bacterial strains, the inhibitory activity zones at 100 g/disc and minimum inhibitory intensity values are 11.0-20.0 mm and 125-250 g/mL, respectively.
The zone is evaluated by the diameter, with no regard for the disc. If you only have a provisional zone due to intersecting zones by neighboring disks, measure the radius from the disc's middle (center) to the zone's edge and multiply by two.
The Zone of Inhibition is a spherical ideal antibiotic getaway zone in which bacteria colonies are not allowed to not grow.
Thus, this way the zone of inhibition can be measured.
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Which of the following statements about human somatic cells is not true?
Select one:
a. They contain 23 pairs of chromosomes.
b. They are haploid.
c. They reproduce by mitosis.
d. They are more complex than bacterial cells.
Answers
Answer:
the answer is b.
Explanation:
human somatic cells are diploid
The statement "b. They are haploid" is not true about human somatic cells.
Human somatic cells are the non-reproductive cells that make up the body tissues and organs. They are diploid, meaning they contain two sets of chromosomes, one set inherited from each parent. The correct answer is option b, "They are haploid," which means having only one set of chromosomes.
In humans, somatic cells contain 23 pairs of chromosomes, for a total of 46 chromosomes. These chromosomes are organized into homologous pairs, where one member of each pair is inherited from the mother and the other from the father. This diploid chromosome number ensures that somatic cells contain the full complement of genetic information necessary for normal cellular function and development.
Somatic cells reproduce by mitosis, which is a type of cell division that results in two identical daughter cells with the same number of chromosomes as the parent cell. Mitosis allows somatic cells to grow, replace damaged or worn-out cells, and maintain the overall structure and functioning of the body.
In comparison to bacterial cells, human somatic cells are more complex. Human cells have a nucleus containing genetic material (DNA), membrane-bound organelles (such as mitochondria and endoplasmic reticulum), and a complex cellular structure. Bacterial cells, on the other hand, lack a nucleus and membrane-bound organelles, and they have a simpler cellular organization.
Therefore, the statement that is not true about human somatic cells is option b, "They are haploid." Human somatic cells are diploid, containing two sets of chromosomes.
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A plant living in a dry area will likely have a substance that helps to minimize water loss from the leaves. What is that substance ?
Answers
Answer:
stomata is the substance that helps to minimize water loss.
The plant wax will surely helps this organism to minimize water loss from all its leaves.
What is the plant wax?The plant wax is a compound composed of different chemical substances (e.g., hydrocarbons, alcohols, ketones, etc).
The wax is generally found in a layer that is outside epidermal plant cells.In conclusion, the plant wax will surely helps this organism to minimize water loss from its leaves.
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Which of the following molecules are products of glycolysis? Select all that apply.
2 ADP molecules
2 NADH molecules
1 pyruvate molecule
4 ATP molecules
4 ADP molecules
Answers
Glycolysis produces 2 NADH, 2 ATP, and 2 Pyruvate molecules.
Glycolysis is the process that is described as an oxidative pathway that typically breaks down the monosaccharides including galactose and glucose molecules and is further involved in the transformation of the energy released into chemical energy which can be used by cells. The products obtained from the glycolysis are:
2 ATP which is generated via substrate-level phosphorylation2 NADH as a result of reaction named redox reactions2 pyruvate moleculesGlycolysis produces 2 ATP, 2 NADH, and 2 pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, produces energy in the form of ATP, NADH, and pyruvate, which itself enters the citric acid cycle to produce more energy.
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I am a real "powerhouse"
That's plain to see
I break down food
And release energy
What am I ?
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In which type of nondisjunction could the two copies of a chromosome in a gamete be heterozygous?.
Answers
Gametes with two heterozygous copies of a chromosome may result from nondisjunction in either meiotic division.
What three types of nondisjunction are there?Nondisjunction can take one of three different forms: failing to separate a homologous pair of chromosomes during meiosis I; failing to separate sister chromatids during meiosis II; or failing to separate sister chromatids during mitosis.
How can you tell whether nondisjunction takes place in meiosis 1 or 2?Nondisjunction, which can lead to an aberrant amount of chromosome-bearing gametes, can happen during meiosis I and meiosis II. The primary distinction between nondisjunction in meiosis 1 and 2 is that whereas sister chromatids fail to separate in meiosis II, homologous chromosomes fail to separate during meiosis 1.What are mitotic and meiotic divisions?Mitosis and meiosis are the two distinct processes of cell division.When people talk about "cell division," they typically mean mitosis, which is the process of creating new cells for the body. The cell division process known as meiosis is what produces egg and sperm cells. A vital process for life is mitosis.learn more about Nondisjunction during meiosis here
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A classmate thinks that cancer and apoptosis are both harmful to organisms. Do you agree or disagree? Explain your reasoning.
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_________________________________
Disagree• Cancer Destroys Cells & Is Abnormal• Apoptosis Destroys Cells & Is Normal_________________________________
why might an alarm pheromone be more effective for triggering a protective response in a hive than signals that involve other senses, such as vision or hearing?
Answers
Pheromones are chemical signals that can quickly and efficiently communicate danger to a large number of individuals within the hive.
In social insect colonies such as beehives, the use of an alarm pheromone can be highly effective for triggering a protective response. Pheromones are chemical signals released by individuals that can influence the behavior of others of the same species. Here's why an alarm pheromone is advantageous in hive defense:
Speed and efficiency: Pheromones can quickly spread through the hive, reaching a large number of individuals in a short period. This rapid communication allows for immediate coordination of defensive behaviors, ensuring a swift response to the threat. In contrast, signals involving vision or hearing may require more time for individuals to detect and interpret the information, leading to delayed responses.
Specificity: Alarm pheromones are highly specific signals that are specifically designed to communicate danger. They are recognized and responded to by individuals within the hive as a clear indication of a threat. Other senses, such as vision or hearing, may be subject to interpretation or confusion, especially in complex or noisy environments.
Amplification: Pheromones can be released in large quantities, creating a strong and widespread signal within the hive. This amplification increases the likelihood of all individuals being alerted to the threat, enhancing the collective defensive response.
By utilizing an alarm pheromone, social insects can efficiently and effectively coordinate their defensive behaviors, ensuring the safety and protection of the hive as a whole. The chemical nature of pheromones enables rapid communication and targeted response, making them highly effective signals in triggering a protective response in a hive.
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History taking is key part of each initial consultation. Which of the following is NOT typically included?
How the animal is behaving
What tests are going to be carried out
What the symptoms are
How the animal is eating and drinking
What treatments they are receiving (including non-prescribed)
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Answer:
what test are going to be carried out
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Answers
ŕrrrrrrrrrrřrrrrrrrrrrrrrrr
Answer:
okk
Explanation:
if 32 g of a liquid has a volume of 16 mL, what is the density of the liquid ?
Answers
2 g/mL^3 is the answer
Which is an example of evidence that changes in the biosphere affect other Earth systems? (1 point)
O Increasing carbon dioxide concentration increases global warming.
O Coral reef destruction reduces the protection of the shoreline.
O Increased UV protection increases animal evolution.
O Increasing ozone increases weathering.
Answers
The example of evidence that changes in the biosphere affect other Earth systems is as follows: Increasing carbon dioxide concentration increases global warming (option A).
What is the biosphere?The biosphere is one of the four spheres of life which is a part of the Earth and its atmosphere capable of supporting life.
It is the totality of living organisms and their environment. The activities of living organisms in the biosphere can also affect the other three spheres; atmosphere, hydrosphere and lithosphere.
For example, the increasing carbon dioxide concentration released by living organisms (biosphere) can cause an increase in global warming i.e. increase in atmospheric (atmosphere) temperature.
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POSSIBLE
Has a waxy coat, has a Chloroplast, and is multicellular. This organisim belongs in which kingdom?
Plantae
Protista
Eubacteria
Answers
Answer:
Plantae
Explanation:
can someone please help me with these
Answers
Answer: 1. Also known as stolons, runners are modified stems that, unlike rhizomes, grow from existing stems just below the soil surface. As they are propagated, the buds on the modified stems produce roots and stems. Those buds are more separated than the ones found on the rhizome. 2. Bacteria reproduce by binary fission. In this process the bacterium, which is a single cell, divides into two identical daughter cells. ... The bacterial cell then elongates and splits into two daughter cells each with identical DNA to the parent cell. 3. the population can increase rapidly when the conditions are favourable.
only one parent is needed.
it is more time and energy efficient as you don't need a mate.
it is faster than sexual reproduction. Organisms do not need to find a partner, this saves time and energy. Because the offspring inherit a unique combination of genetic information they are all different. 4. In mitosis, motor proteins carry chromosomes or other microtubules as they walk. Telophase. The spindle disappears, a nuclear membrane re-forms around each set of chromosomes, and a nucleolus reappears in each new nucleus. The chromosomes also start to decondense. Mitosis is the process in which the nucleus of a eukaryotic cell divides. During this process, sister chromatids separate from each other and move to opposite poles of the cell. This happens in four phases, called prophase, metaphase, anaphase, and telophase. 5. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells. 6. Organisms can repair some of their tissues, using mitosis to regenerate new cells. Damaged skin, for example, constantly repairs itself through the production of new skin cells or scar tissue. Some organisms can even use mitosis to regenerate entire body parts. brainliest??
Explanation:
Can someone please answer this? It's due by midnight.
Answers
Answer:
CHLOROPHYLL PHOTOSYNTHESIS LEAVES NO CLUE HERBIVORE GREEN CARBONDIOXIDE OXYGEN SIX SUGARExplanation:
Things appear green because they reflect the colour green.
Every molecule of glucose is produced with 6 oxygen molecules during photosynthesis.
6CO₂ + 6H₂O = C₆H₁₂O₆ + 6O₂
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which is a joint in which articulating bones are joined by long strands of dense regular connective tissue?
Answers
A joint in which articulating bones are joined by long strands of dense regular connective tissue is a fibrous joint, also known as a synarthrosis.
Fibrous joints are characterized by their minimal movement and high stability. The bones in fibrous joints are connected by collagen fibers or other dense connective tissue, which provides strength and resistance to tension or twisting. Examples of fibrous joints include sutures between the bones of the skull, which are connected by dense regular connective tissue, and syndesmoses, such as the joint between the tibia and fibula in the lower leg, which are connected by interosseous membranes made of fibrous connective tissue. Fibrous joints are important for maintaining the structural integrity of the skeleton and protecting vital organs from injury.
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What does Chromatin mean?
Answers
Answer:
Chromatin is the material of which the chromosomes of organisms other than bacteria (i.e., eukaryotes) are composed. It consists of protein, RNA, and DNA.
Explanation:
hope this helps :)
Blood types: The blood type O negative is calied the "universal donor" type, because it is the only biood type that may safely be transfused into any person. Therefore, when someone needs a transfusion in an emergency and their blood type cannot be determined, they are given type o negative blood. For this reason, donors with this bloed type are crucial to blood banks. Unfortunately, this blood type is fairly rare; according to the Red Cross, onily 7 if or U.S. residents have type 0 negative blood. Assume that a blood bank has recruited 24 donors. Part 1 of 2 (a) What is the mean number of donors who have type 0 negative blood? Round the answer to two decimal places. The mean number of donors who have type O negative blood is Part 2 of: 2 (b) What is the standard deviation of the number of donors who have fype o negative blood? Round the answer to four decinal places: The standard deviatien of the number of donoes who Nave type o negative blood is
Answers
(a) Mean number of donors who have type O negative blood Mean of a population (μ) is found by adding up all the values and dividing by the number of values. So, the formula for calculating the mean of a population is:
mu=1Nsum_i=1^N x_where mu is the population mean, N is the number of values in the population, x_i is the ith value in the population.Using the given data in the question, we can compute the mean of donors who have type O negative blood:mu=24cdot 0.07 1 =1.68 Hence, the mean number of donors who have type O negative blood is 1.68. (rounded to two decimal places)(b) Standard deviation of the number of donors who have type O negative blood:Standard deviation is a measure of how much the data in a set is spread out. It is given by the formula:
sigma=i=1^N(x_i-mu)^2 Nwhere sigma is the standard deviation, mu is the mean, x_i is the ith value in the set, and N is the number of values in the set.Using the given data in the question, we can compute the standard deviation of donors who have type O negative blood:sigma=24 cdot 0.07 cdot (1-0.07)) 1=0.4652 Hence, the standard deviation of the number of donors who have type O negative blood is 0.4652. (rounded to four decimal places)About O Negative bloodO negative blood is the type most commonly used for transfusions when the patient's blood type is unknown. The O negative group is most often used in emergency cases, trauma, surgery, because this type is universal. However, O negative blood group can only receive O negative blood. O blood group is divided into two types Blood type O that has the rhesus antigen is called blood type O positive. Blood type O that does not have the rhesus antigen is called blood type O negative.
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A scientist conducts an experiment to find conflicting data with a theory widely accepted. What should the scientist do?
Answers
Answer:
The scientist must complete the experiment, evaluate the results and disclose his conclusions.
Explanation:
If the scientist wishes to find conflicting data in a widely accepted theory, he must first establish a scientific experiment using all the steps of the scientific method. It is important for the scientist to complete the entire experiment so that he can evaluate the results and reach concrete conclusions about whether there is, in fact, conflicting data in the theory. The results should generate conclusions that must be disclosed regardless of whether the cinetist's hypotheses are proven or not.
The scientific method is a set of rules that guide the execution of a scientific experiment.
what amino acids are coded for in this sequence of
codons.
mRNA: GCU ACG GAG CUU CGG AGC UAG
Answers
The amino acid coded is based on the mRNA, not the anticodon. Use your chart to figure this out.
alanine - threonine - glutamate - leucine - arginine - serine - stop
You are on the board of directors of a private high school, which is hiring new tenth-grade science teachers. As you think about hiring someone for a job, what are some mechanisms you might use to overcome the problem of imperfect information?
Answers
Some solutions to the problem of inaccurate information include obtaining proof of knowledge, skill, and a professional license through the use of papers and certifications.
When hiring new science teachers for a private high school's tenth-grade class, there are several strategies that may be used to deal with the issue of insufficient information:
When learning more about candidates' qualifications, history of education, job history, and references, it's a good idea to start by asking for their resumes and applications. As a result, the board of directors is able to judge applicants according to their credentials.
Interviews: A smart technique to get more particular information about the applicants is to schedule interviews. The knowledge, teaching skills, and student-relations abilities of a candidate can be assessed through structured interviews with standardized questions. Interviews with a number of board members on a panel can help provide a range of perspectives and decrease personal biases.
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A layer of rock contains an index fossil that is 250 million years old. How old is another layer of rock with the same fossil 1,000 miles away?
A. 200 million years
B. 250 million years
C. 100 million years
D. 350 million years
Answers
Some form of early Homo is estimated to have evolved into Homo erectus around: O 5-7.5 million years ago
O 1.7-2 million years ago O 10,000-40,000 years ago O 50,000-70,000 years ago t
Answers
Some form of early Homo is estimated to have evolved into Homo erectus around 1.7-2 million years ago, option B is correct.
Homo erectus is believed to have evolved around 1.7-2 million years ago based on fossil evidence and dating methods. Fossil discoveries, such as the famous Nariokotome Boy skeleton found in Kenya, provide crucial insights into the anatomy and characteristics of Homo erectus. These fossils, along with other archaeological and genetic evidence, suggest that Homo erectus was the first hominin species to exhibit significant anatomical and behavioral differences from earlier hominins.
The emergence of Homo erectus marked a significant milestone in human evolution, as this species had a larger brain size, more advanced tool-making abilities, and potentially even the ability to control fire. These developments laid the foundation for the subsequent evolution of Homo sapiens, option B is correct.
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The complete question is:
Some form of early Homo is estimated to have evolved into Homo erectus around:
A) 5-7.5 million years ago
B) 1.7-2 million years ago
C) 10,000-40,000 years ago
D) 50,000-70,000 years ago
Suppose a dominant allele causes a plant to die before it can reproduce. Over time what would probably happen to the frequency of the allele in the population?
A. The dominant allele would increase.
B. Heterozygous individuals would increase.
C. The dominant allele would decrease.
D. The allele would cause a mutation.
Please it's super important.