Answer:
d. contain acid hydrolases that are potentially dangerous to the cell
Explanation:
Lysosome is an eukaryotic cellular organelle. It maintains an acidic environment and has many hydrolytic enzymes( acid hydrolases). These enzymes are active only inside lysosome because they require acidic environment to function. They are inactive in the alkaline environment of the cell otherwise they would have posed a threat to cell's other components.
When a foreign particle enters the cell, it is engulfed by the lysosome and destroyed. Lysosome is also involved in autophagocytosis where it destroys old or malfunctioning cell components. Resultant amino acids or other components are recycled for cell's use. Sometimes they can be used by cell during apoptosis to destroy itself but it's not always the case.
bacteria are the simplest single cells that ____.
a. Carry out all basic Life activities
b. are highly organized
c. include all cells and organelles
d. all have the same function
The correct option is A which is they carry out all basic life activities.
Explanation:Bacteria are simplest organism known to exist.
This simplicity is in their structure and somehow in function also.
It does not mean they have lack of metabolism or structural features.
Instead they carry all the functions and structure which distinguish them from non living organism.
Some of these structures are:
Genetic material.Cell wall.Cell membrane.Ribosomes.Metabolism of bacteria:
Respiration.Photosynthesis(not all)Digestion (In some ingestion)Defense system.The oldest basalts on the ocean floor are about ____________ years old.
What is the correct order of organization from smallest to largest in an ecosystem?
Atom A has an atomic number of 19 and mass number of 40. Atom B has an atomic number of 20 and a mass number of 40. Which of these is an accurate statement?
A) Atom A has more protons than Atom B.
B) Atom A has one less proton and one more neutron than Atom B.
C) Atom A has an extra nucleon compared to Atom B.
D) Atom A has one more proton and one more electron than Atom B.
Final answer:
The correct statement is B) Atom A has one less proton and one more neutron than Atom B, given that both have the same mass number but different atomic numbers.
Explanation:
The correct statement regarding Atom A, which has an atomic number of 19 and a mass number of 40, and Atom B, which has an atomic number of 20 and a mass number of 40, is option B) Atom A has one less proton and one more neutron than Atom B. This is due to the fact that the atomic number represents the number of protons, and since Atom A has an atomic number of 19, it has 19 protons. In contrast, Atom B with its atomic number of 20 has 20 protons. Both Atom A and Atom B have a mass number of 40, which is the sum of protons and neutrons. Therefore, Atom A has 40 - 19 = 21 neutrons, and Atom B has 40 - 20 = 20 neutrons. Hence, Atom A has one more neutron and one less proton compared to Atom B.
Where on the infant's back should the back blow be administered?
What is common to both cellular respiration and the light reactions of photosynthesis?
If a true-breeding twelve inch plant (this means when self-crossed the offspring are always 12 inches) is crossed with a true-breeding six inch plant and all of the f1 plants are nine inches tall, this is most likely a situation of?
A group of students is measuring the number of paper bags brought to a recycling center in a single day. What are the students doing? A. Collecting data B. Stating a hypothesis C. Drawing a conclusion D. Analyzing data
If a group of students are measuring the number of paper bags brought to a recycling center in a single day, they are collecting data.
Stating a hypothesis is making an educated guess as to how many bags would be brought to the recycling center each day.
Drawing a conclusion would be when all of the data has been collected and examined.
Analyzing data would be going back to look at the collected data from the research project to see if the hypothesis was correct, what determinations were made and if any discoveries were made.
What is the significance of meiosis in regards to evolution within a species? (How does meiosis benefit the species)
The nurse is caring for an infant in the neonatal intensive care unit who has growth hormone deficiency. what critical issues should the nurse carefully monitor for in this infant
What word refers to the fatty blood-forming tissue in the cavities of long bones?
What is nitrogen fixation and why are bacteria crucial to this cycle of life?
Final answer:
Nitrogen fixation is the process by which certain bacteria and archaea convert atmospheric nitrogen into ammonia, a form usable by plants and other organisms. These bacteria use an enzyme called nitrogenase to carry out the fixation process, which is key to the nitrogen cycle and vital for life on Earth. Symbiotic relationships between leguminous plants and nitrogen-fixing bacteria are particularly important in agriculture.
Explanation:
Nitrogen fixation is a biological process where certain bacteria and archaea, known as diazotrophs, convert atmospheric nitrogen (N₂) into ammonia (NH₃), making it accessible to plants and other organisms. This process is vital for life on Earth, as nitrogen is a key component of essential organic molecules like proteins, DNA, and RNA. However, the abundant nitrogen gas in the atmosphere is largely inert and unavailable to most forms of life. Through the action of specific enzymes, these bacteria are able to break the strong triple bond in molecular nitrogen and fix it in a form that organisms can use to synthesize proteins and nucleic acids.
One major pathway of biological nitrogen fixation involves the enzyme nitrogenase, which catalyzes the reduction of atmospheric nitrogen to ammonia. This reaction requires a significant amount of energy, usually in the form of ATP, and is sensitive to the presence of oxygen, with many nitrogen-fixing bacteria being anaerobic to avoid oxygen inhibition of nitrogenase.
Leguminous plants, which include important agricultural crops like soybeans and peanuts, have developed symbiotic relationships with nitrogen-fixing bacteria. These bacteria reside in root nodules, an environment that protects them from oxygen while allowing them to provide fixed nitrogen directly to the plant. In return, the plant supplies carbohydrates and other nutrients to the bacteria. This symbiosis is a key contributor to nitrogen cycling in ecosystems and plays a critical role in agriculture, as it reduces the need for synthetic fertilizers.
The ________ is the most caudal portion of the brain stem.
Explain how the fern sporophyte is dependent upon the gametophyte
How does a sunflower maintain homeostasis?
Final answer:
Sunflowers maintain homeostasis by using negative feedback mechanisms to regulate their inner environment. They adjust their physiological processes in response to environmental stimuli, like variations in temperature or water availability, and use the energy from photosynthesis to support growth and reproduction. The timing of flower maturity and sugar to fat conversions in seeds helps ensure survival.
Explanation:
Like all living organisms, sunflowers maintain homeostasis, the process of maintaining a stable internal environment despite changes in the external environment. Sunflowers use various strategies to regulate their internal conditions to ensure proper function and growth. One key example of a sunflower's ability to maintain homeostasis is their engagement in photosynthesis, using the C3 photosynthetic pathway. The sunflower is a photosynthetic autotroph that converts sunlight into the sugars needed for growth and reproduction.
The sunflower adjusts its mechanism based on internal and external stimuli through a process known as negative feedback. For instance, when there are fluctuations in certain environmental conditions, like water availability or temperature, the sunflower's physiological processes adapt to stabilize these conditions. Additionally, the sunflower's inflorescence also plays a role in this balancing act. The timing of flower maturity and the development of individual flowers work in a way that maximizes the chances for successful pollination and seed setting, which is crucial for the survival and reproduction of the species.
Finally, another aspect of a sunflower's homeostasis includes the control of matter and energy. Sugars produced via photosynthesis are transported as sucrose to developing seeds and used to create oils within the seeds. The energy for the conversion of sugars to fats is provided by the oxidation of sugars. Thus, through these complex feedback mechanisms, sunflowers regulate growth and reproduction while maintaining dynamic homeostasis.
You are a farmer in ancient mesopotamiaand you grow 500 bushels a year. your family uses 300 bushels ay ear. what do you have?
Some proteins that are on the surface of mammalian cells are glycosylated. these proteins are synthesized by _______ and glycosylated in the
Ozone intake can cause irritation in what system of the body?
Answer:respiratory
Explanation:
Which statement best describes a typical difference that could be found between the “Analysis” and “Conclusion” sections of a lab report? Only the “Conclusion” section describes errors that occurred during the experiment, and only the “Analysis” section suggests further research. Only the “Analysis” section includes specific data comparisons, and only the “Conclusion” section suggests further research. Only the “Analysis” section discusses whether the original hypothesis was supported, and both sections include graphs of data. Only the “Conclusion” section discusses whether the original hypothesis was supported, and both sections suggest further research.
A man with type a blood marries a woman with type b blood. their child has type o blood. part a what is the genotype of the man?
Postganglionic parasympathetic fibers are relatively long.
a. True
b. False
How is the embryological development of a vertebrate animal (frog or bird) similar to that of an echinoderm (starfish or sea cucumber)?
Which cell structure functions like a school principal's office?
The cell structure that functions like a school principal's office is the nucleus.
In a eukaryotic cell, the nucleus is the control center and acts much like a school principal's office.
It contains the cell's DNA, which is the genetic material that directs all the activities of the cell. Just as a principal oversees the operations of a school, the nucleus coordinates the work of the cell by controlling gene expression and regulating protein synthesis. It is responsible for maintaining the integrity of the genetic information, making important decisions for the cell's functions, and ensuring that the cell operates in an orderly manner. The nucleus also plays a crucial role in cell division, where it directs the process of mitosis or meiosis, similar to how a principal would oversee important events and transitions within a school.An individual experiences brain damage that produces a coma. which part of the brain was probably damaged?
Carbohydrates are essential to provide energy for the body because:
a. they provide ketone bodies, which are the preferred energy of the body's cells.
b. fats are not able to provide any energy to the cells.
c. the glucose that is produced from them is vital to fuel most of the body's cells.
d. proteins are available only to provide building block materials for tissues.
e. ketone bodies produced from proteins do not provide adequate energy for cells.
Answer:
Option (c).
Explanation:
Biomolecules are the important organic molecules that re present in the body of living organism. Four biomolecules of living organism are carbohydrates, proteins, lipids and nucleic acids.
Carbohydrates are the made of the polymers of glucose. Glucose is the important energy source of the body as the hum,an cells are permeable to the glucose molecule and generates ATP. Carbohydrate acts as an important vital fuel as it contains glucose units.
Thus, the correct answer is option (c).
The human heart consists of ________ chambers
The basics needs of ____ are sunlight, to exchange gases, and water and minerals.
The answer is PLANTS. Makes more since. Google what plants need VS what heterotrophs needs.
Which food provides the least amount of available zinc?​?
In pea plants, the allele for tallness is dominant. What are the possible genotypes of a tall pea plant?
Answer:
The correct answer would be TT and Tt.
According to the law of dominance, the trait which gets expressed in the heterozygous condition is termed as dominant trait.
The allele of a gene which is expressed in heterozygous condition is symbolized by capital letter.
For example, the allele responsible for tallness of a plant can be symbolized by "T".
Thus, the genotype of a gene responsible for the tallness of a plant can either be TT (homozygous) or Tt (heterozygous).
Why do protists, plants, fungi and animals share a single domain in the three domain system?