Suppose that a patient is diagnosed with a new disease caused by the buildup of waste material in the body’s cells. Which organelle is most likely malfunctioning in the patient’s cells?
the Golgi apparatus
lysosomes
ribosomes
the endoplasmic reticulum
Answer:
Lysosomes
Explanation:
Lysosomes are the membrane bound organelles that have hydrolytic enzymes. Lysosomes are formed from the enzymes rich vesicles that bud off from the Golgi apparatus. Function of lysosomes is to remove the wear and tear parts of cells and waste material from the cells. Malfunctioning of lysosomes may lead to buildup of waste material in cells.
If one amino acid in a protein sequence is changed, what could happen?
A.It could become a carbohydrate.
B.Normal bodily functions can change.
C.Proteins are so complex that one amino acid won't make a difference.
Answer: the answer whould be B.
Which role does the cane toad play in the Hawaiian Islands?
native species
invasive species
uncontrolled species
endangered species
Answer:
invasive species
Neither matter nor ________ can be created or destroyed, but they can be converted from one form to another??????
S.E.A.L Certified Answer:
Energy
What do decomposers eat??
Which of these organisms have an endoskeleton,beetle,elephant,tree,or a crab?
Which nation was able to broker an armistice agreement between North and South Korea, ending the fighting?
Answer:
The Armistice Agreement to end the war between the two Korean nations was brokered by India.
Explanation:
The Korean Armistice Agreement was signed on July 27, 1953 by U. S. Army Lieutenant General William Harrison, Jr. representing the United Nations Command, the Chinese people's Volunteer Army (PVA) and North Korean General Nam II representing the Korean People's Army. This agreement brought about the complete cessation of the hostilities of the war.
India played a mediator in the war, bringing resolutions to ensure peace and ceasefire between the warring nations. The war had never formally ended and this armistice was the truce that will bring the nations into a standstill until further solutions could be found. This armistice suggested the establishing of a Neutral Nations Repatriation Commission (NNRC) chaired by Indian General K. S. Thimayya, which will decide the fate of over 20,000 prisoners of war (POWs) from both sides, among the many issues to be resolved. Though this armistice was not the final solution for the war to stop, it brought a piece of relief for the people and also for the governments until a permanent solution can be found.
_____ is the main energy source for all life on earth. Chlorophyll Water Sunlight Nitrogen
Answer: Sunlight
Sunlight is the main source of energy for all life forms on earth. It is trapped by the green plants and other autotrophic organisms in order to conduct the process of photosynthesis. In photosynthesis, the light energy from sun is converted into chemical energy in the form of food. The plants are eaten by other organisms such as animals, birds and humans as a source of food and energy.
Recall the basic components of ATP
ATP consists of an adenine base, a ribose sugar, and three phosphate groups. The breaking of high-energy bonds in ATP releases energy for cellular activities. The recharging of ADP to ATP requires significant energy.
Adenosine triphosphate (ATP) is a complex molecule that plays a critical role in storing and transferring energy within cells. The structure of ATP is composed of three main parts: an adenine nucleoside 'base', a five-carbon sugar (ribose), and triphosphate. The triphosphate tail of ATP is made up of three phosphate groups that are designated by the Greek letters alpha (), beta (), and gamma (). The alpha phosphate is the one closest to the ribose sugar. ATP is converted into adenosine diphosphate (ADP) or adenosine monophosphate (AMP) as it releases energy for cellular processes through the breaking of the high-energy bonds between phosphate groups.
ATP is an inherently unstable molecule due to the negative charges of the phosphate groups repelling each other. This instability makes it easier for the bonds between the phosphates to be broken, which is a process called hydrolysis. The hydrolysis of ATP releases a large amount of energy that cells use to perform most cellular activities, such as muscle contraction, active transport, and biochemical synthesis.
The addition of a phosphate group to recharge ADP back to ATP requires a high amount of energy, which is often derived from the breakdown of glucose during processes like glycolysis. ATP's role as the primary energy currency of cells cannot be overstated; it is essential for life and enables the functioning of most cellular processes.
Which of the following are lipids?
a. waxes
b. carbohydrates
c. amino acid
d. protein
Waxes are lipids
A wax is a simple lipid which is an ester of a long-chain alcohol and a fatty acid. The alcohol may contain from 12-32 carbon atoms. Waxes are found in nature as coatings on leaves and stems.
Wax is a lipid that is an ester of a long-chain fatty acid and alcohol. Alcohol may have between 12 and 32 carbon atoms. Wax is a substance that naturally coats stems and leaves.
Fats and oils make up the family of organic substances known as lipids. These molecules produce a lot of energy and are in charge of several bodily processes. The following list includes some crucial properties of lipids. Lipids are fatty or oily nonpolar molecules that are kept in the body's adipose tissue.
A diverse class of substances known as lipids is mostly made up of hydrocarbon chains. Lipids are organic compounds that are high in energy and supply that energy for several living activities. A family of chemicals known as lipids is distinguished by their solubility in nonpolar solvents and insolubility in water.
Therefore, wax is a lipid.
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5. _______ are RNA and protein complexes that are found in all cells. These complexes help cells during protein translation by joining amino acids together to form polypeptides. Vacuoles Ribosomes Lysosomes Chloroplasts
The answer to that question is Ribosomes
Answer:
option). ribosomes.
Explanation:
Ribosomes are cell organelles, made up of ribosomal RNA and proteins. They are present in both prokaryotic and eukaryotic cells and provide platform for the process of protein synthesis or translation.
During translation, mRNA carries information from nucleus to ribosomes and ribosomes help in formation of peptide bonds that join two amino acids and form polypeptides.
Thus, the correct answer is option). ribosomes.
If purple flower color is dominant and red flower color recessive, how many phenotypes are possible in offspring of homozygous purple crossed with homozygous red?
The olfactory system is the sensory system that deals with the sense of smell. please select the best answer from the choices provided t f
The right answer is true.
At the anatomical level, the olfactory system is composed of two structures, the main olfactory system whose stimulation induces sensations of smell and the trigeminal system that induces somatosensory sensations (tactile, thermal, pain, humidity). There is a third part called "vomeronasal organ", which is set back in the opening of the nostrils. In humans, the vomeronasal organ remains in a rudimentary state because its afferents nerve disappears from the 18th week of the embryonic life.
Plant cells perform photosynthesis,which occurs in the
A) chloroplast
B) cytoplasm
C) mitochondria
D) nucleus
Plant cells perform photosynthesis, which occurs in the chloroplast. Therefore, the correct option is option A.
The equilibrium of our planet's ecosystems is maintained in large part by photosynthesis. Plants act as the planet's "lungs" by absorbing carbon dioxide from the atmosphere and releasing oxygen through this amazing process. The generation of glucose, a form of sugar that serves as the primary energy source for plants, is also a result of photosynthesis. Chloroplasts, teeny organelles found inside plant cells and containing chlorophyll, are where the process of photosynthesis takes place. The solar energy from the sun is captured by this green pigment.
Therefore, the correct option is option A.
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name at least 4 things our atmosphere does for us
Compare and contrast what happens in mitosis and meiosis and discuss the importance of each process to a living organism.
Answer:
Mitosis is important for growth and repair, while meiosis occurs in cells involved in sexual reproduction.
Explanation:
The responsible management (use and conservation) of the earth's resources indefinitely using science-driven policies and practices is called ________.
an environmental conservation trustthe maximum sustainable yieldsustainable developmentlandscape ecology
What is the role of natural selection in evolution?
Natural selection is a specific mechanism of evolution in which the heritable traits (characteristics) help an organism to survive his generation.
Natural selection is a specific mechanism of evolution in which the heritable traits (characteristics) help an organism to survive and reproduce successfully.
Natural selection is a specific mechanism of evolution in which all acquired traits (characteristics) help an organism to survive and reproduce successfully
Answer:
Natural selection is a specific mechanism of evolution in which the heritable traits help an organism to survive and reproduce successfully. For example, white and brown moths of the same species. Both hide on tree bark, which is brown. Since the white moths are easier to spot for predators, they die off, which makes the brown moths more successful in surviving long enough to reproduce and pass on the brown color gene.
What feature of the substrate allowed it to bond to the enzyme?
Succession occurs because _______.
a.
organisms gradually change the environment
b.
climax communities are not possible
c.
dominant organisms drive out pioneer species
d.
ecosystems never reach a sustainable point
Correct answer: A) Organisms gradually change the environment
Succession occurs when a disturbance takes place in the environment, it can occur either by the disturbance of minor or major order disturbance.
The major disturbance can be caused due to the natural cause like the volcanic eruption and minor disturbance caused due to a natural or human cause like the forest fire.
Based on the type of disturbance succession is classified into two types of primary and secondary succession.
Primary succession is said to occur when a community or a group of the species evolve from a barren land. The land is fresh and new and no life is found on it.
Example: Succession after the volcanic eruption is said to be primary succession.
Secondary succession is said to occur when the disturbance destroys the whole ecosystem, but still, there is an availability of soil, nutrient, and seed in the ecosystem.
Example: Forest fire
which of the following could result from a algae bloom in a river.
a.algae purify water
b.local plants produce flowers early
c.fish would die
d.plant and animal population would increase
Algae use the presence of increased nutrients and enhance their own growth. Tthey produce an oxygen in the photosynthesis, so it is not a problem while they are still alive. But when these organisms die, their decomposition begins. For the process of decomposition, the oxygen is needed and ultimately it will be depleted from a body of water. This could lead to the death of aquatic animals, such as fish, that depend on oxygen.
If a mutation occurs in a body cell and the mutation changes the phenotype of the individual, what will happen to the offspring of the individual?
A. The offspring may or may not inherit the new phenotype.
B. The offspring will inherit the change in genotype but not the phenotype change.
C. The offspring will inherit neither the genotype or phenotype change.
D. The offspring will inherit the new phenotype.
The correct answer is (c) The offspring will inherit neither the genotype nor the phenotype change.
Mutation is a slight change in the genetic material of cell.The mutation that is carried from one generation to other is to be in the germ cell. The mutation that occurs in the body cell is not inherited to another generation. The mutation that occurs in a body cell might change the phenotype of the person but is not transferred to another generation. The conclusion is that the offspring will not have any change in the phenotype and genotype of the body.
PLEASE HELP!!!!! NEED THESE BY 3:00!!!!!!!!!!!!!!!!! SCIENCE Unit 5-6 Test: Sculpting Earth's Surface!!!!!!!!!
15. Give one example of an environmental problem associated with groundwater and explain the impact it could have on people. *
4 points
4 sentences
16. Describe how a stream changes from its headwaters to its source. Include changes in its size and shape, gradient, velocity and discharge. *
4 points
4 sentences
17. How do caverns form? What type of rock are caverns most commonly formed from and why? *
According to Newton's law of universal gravitation,the sun would have ___ gravity than earth because it's more ___
1. More / less
2. Massive / distant
According to Newton's law of universal gravitation,the sun would have more gravity than earth because it's more massive.
Which gland secretes melatonin?
Final answer:
The pineal gland secretes melatonin, which helps regulate the sleep-wake cycle.
Explanation:
The pineal gland secretes melatonin. The pineal gland is a small endocrine gland located in the brain, specifically in the diencephalon region. Melatonin is a hormone that helps regulate the sleep-wake cycle.
The pineal gland, nestled within the intricate landscape of the brain's diencephalon region, serves as a vital player in the orchestration of our circadian rhythms. This small endocrine gland's primary function is the secretion of melatonin, a hormone with profound implications for our sleep-wake cycle regulation. As daylight wanes, the pineal gland responds to the diminishing light by increasing melatonin production, signaling the onset of darkness and encouraging the body to transition into a state of rest. This hormone, often referred to as the "hormone of darkness," plays a pivotal role in synchronizing our internal biological clock with the natural day-night cycle, highlighting the intricate connection between hormonal secretion and our innate patterns of sleep and wakefulness. Understanding the pineal gland's role in melatonin production contributes to insights into circadian rhythm disorders and opens avenues for exploring therapeutic interventions in sleep-related health issues.
Which of the following is the primary cause of the rapid rise in loss of biodiversity?
A. New buildings and homes
B. Lack of effective laws and regulations
C. Human activity
D. Natural evolutionary process
...?
The primary cause of the rapid rise in loss of biodiversity is Human activity. This includes activities like deforestation, urbanization, climate change, and pollution. These activities lead to habitat destruction and allow harmful practices to continue unregulated. option c.
Explanation:You are asking about the primary cause of the rapid rise in loss of biodiversity. The main cause of this pressing environmental issue is indeed Human activity (option C). Human activities, such as deforestation, urbanization, pollution, and climate change, have accelerated the loss of biodiversity on an unprecedented scale. This is significantly faster than the natural evolutionary process. For example, construction of new buildings and homes can lead to habitat destruction, while lack of effective laws and regulations can enable harmful practices to continue unchecked.
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What is the purpose of the biogeochemical cycles?
A.to cycle energy through a food chain
B.to recycle matter through the biosphere
C.to recycle rocks through the layers of Earth
D.to cycle nutrients through the human body
Why are pollutants more harmful to tertiary consumers as opposed to producers?
How does decreasing light intensity affect rate of photosynthesis in vascular aquatic plants?
Both mitosis and meiosis are types of nuclear division but they result in different cell types describe how the steps of meiosis 1 differ from those of mitosis.
In meiosis I, sister kinetochores must attach to the same pole and homologous kinetochores must attach to the opposite poles. While In mitosis, sister kinetochores must attach to the opposite poles. This is the key division that reduces the ploidy of cells in meiosis.
What is Mitosis?Mitosis may be characterized as a type of cell division through which each parental cell is successfully divided into two genetically identical daughter cells. These daughter cells are diploid in nature. Somatic cells are generally divided through this process.
While in meiosis, each parental cell is successfully divided into four genetically unidentical daughter cells. These daughter cells are haploid in nature. Germ cells or gamete cells are generally divided through this process.
A key difference in both processes, however, is that during meiosis, each of these phases occurs twice. Each with half the number of chromosomes as a parent cell.
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