Cells are the structural and functional unit of life. The cells can be categorized into eukaryotic and prokaryotic based on their structure, function, and properties.
The correct answer is:
Option B: Only eukaryotic cells its genetic material surrounded by a membrane.
Eukaryotic cells are well-developed cells, with the eccentric nucleus and membrane-bound organelles. The cells have certain features:
The cell has mitochondria and other developed organelles like Golgi bodies, nucleus, and ribosomes.The flagella and cilia are the locomotory organs present in the cell.The cells have a nucleus enclosed within a nuclear membrane. The nucleus consists of genetic material.
Eukaryotic cells have organelles specialized in their functions.
Eukaryotic cells have cell membranes and some have cell walls.
Therefore, the nucleus of eukaryotic cells is enclosed in the nuclear membrane.
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The brain must effectively convert two-dimensional images into a three-dimensional percept so we can
___________ provide us with a steady source of energy and are a rich source of vitamins and minerals.
A nurse is caring for a client experiencing hyponatremia who was admitted to the medical-surgical unit with fluid-volume overload. for which clinical manifestations of this electrolyte imbalance does the nurse monitor this client? select all that apply.
where do we get all energy in our ecosystems?
Which two spinal curvatures are obvious at birth?
The primary curves of the vertebral column that are obvious at birth are the thoracic curve and the sacrococcygeal curve.
Explanation:During fetal development, the body is flexed anteriorly into the fetal position, giving the entire vertebral column a single curvature that is concave anteriorly. In the adult, this fetal curvature is retained in two regions of the vertebral column as the thoracic curve, which involves the thoracic vertebrae, and the sacrococcygeal curve, formed by the sacrum and coccyx. Each of these is thus called a primary curve because they are retained from the original fetal curvature of the vertebral column.
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Explain why scientists believe the Abert’s and Kaibab squirrels are examples of speciation.
Food webs show feeding relationships among different types of organisms. Those organisms each have a specific niche which of the following best describes a function of decomposers in food webs.
To recycle nutrients in soil
To convert solar energy into food
To provide food for secondary consumers
To compete with secondary consumers for oxygen
Bacteria in the large intestine can produce folic acid.
Select one:
True
False
answer
TRUE!!!
Final answer:
Bacteria in the large intestine can indeed produce folic acid, as part of a complex ecosystem that contributes to various functions essential for health, such as vitamin synthesis, digestion, immunity, and preventing the growth of harmful bacteria.
Explanation:
It is True that bacteria in the large intestine can produce folic acid. The large intestine hosts a complex ecosystem called the gut microbiome, comprising trillions of bacteria. While many people are aware of their role in digestion and immunity, these bacteria also play an essential role in synthesizing certain vitamins. Specifically, gut bacteria are capable of producing various B vitamins, including folic acid (vitamin B9), as well as vitamin K.
These beneficial gut bacteria synthesize nutrients that the body cannot produce on its own, which are then absorbed through the large intestine into the bloodstream. This symbiotic relationship is crucial for maintaining good health. Dietary habits and certain medications can influence the composition of the microbiome and thereby affect the production of these vitamins. Hence, the role of intestinal bacteria extends beyond digestion to include a diverse array of functions that contribute to overall well-being.
The __________ valve regulates the flow of blood between the right ventricle and the vessels leading to the lungs.
The tricuspid valve regulates blood flow between the right atrium and right ventricle.
What is the function of tricuspid valve?
The tricuspid valves job is to allow blood flowing into the heart from the body to flow to the right ventricle where it's pumped to the lungs for oxygen.
What does the tricuspid valve do?
The tricuspid valve is on the right side of the heart. It separates the upper and lower chambers, also known as the right atrium and ventricle. The valve allows deoxygenated blood to flow through both of the chambers.
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Solution concentration can be described in terms of tonicity. Solutions are hypertonic, isotonic, or hypotonic to cells. A hypertonic is one that has a greater concentration of solute outside the cell and therefore a lower concentration. Water will leave the cell, to the outside environment. This is one reason why organisms that live in fresh water cannot survive in salt water, the ocean. Water will leave the organism’s cells and eventually the cells will undergo plasmolysis and the organisms will die. An isotonic solution is a balanced solution. That is, the solution concentration is balanced with the solution inside the cell. Finally, when a cell is surrounded by a hypotonic solution, concentration of solute is greater inside the cell, concentration of water greater outside. Water moves into the cell and the cell swells. If enough water enters, the cell can burst.
On Day 2, the egg was placed in 10% salt water. Based on the student data, what type of solution would we label 10% salt water in this case?
A) hypertonic
B) hypotonic
C) isotonic
D) saline
The 10% salt water solution is classified as a hypertonic solution because it has a higher solute concentration than the inside of the cell, causing water to leave the cell and possibly leading to cell shrinkage or plasmolysis.
Explanation:The answer to what type of solution the 10% salt water is can be determined by its effect on cells. When an egg is placed in 10% salt water, if the egg shrinks or shrivels, this indicates that water is leaving the cell, making the 10% salt water a hypertonic solution.
Hypertonic solutions have a higher concentration of solute compared to the inside of the cell, resulting in water moving out of the cell. This will cause the cell to lose water and undergo plasmolysis, which can be detrimental to the cell. An isotonic solution would have the same solute concentration as inside the cell, while a hypotonic solution would have a lesser solute concentration, causing water to enter the cell and potentially leading to the cell bursting. Therefore, given the data indicating that the egg was placed in 10% salt water which is likely a significantly higher solute environment than the interior of the cell, option (A) hypertonic is the correct answer.
Do you think scientists should spend time looking for Earth-like planets before we have the technology to visit them? Why or why not?
Which statement best describes the exosphere? It extends down to sea level. It is the place where meteors burn out. It is the layer where we observe lightning. It is the last layer of the atmosphere before space.
**It is the last layer of the atmosphere before space.** Hope It Helped. :)
If you have just eaten, your body secretes ______ to uptake glucose; if you have not eaten all day, your body secretes ______ to promote glycogen breakdown.
A patient recently diagnosed with acquired immunodeficiency syndrome (aids) states, "i am perfectly fine, and i don't want to discuss my treatment and condition." after considering the patient's current stage of grief, which action by the nurse would be appropriate?
Which of the following is not a product of the second stage of glycolysis?
ATP
NADH
pyruvate
carbon dioxide
Carbon dioxide is not produced in the second stage of glycolysis; it is produced during the decarboxylation of pyruvate and in the Krebs cycle.
Explanation:The product not formed during the second stage of glycolysis is carbon dioxide (CO2). Glycolysis, occurring in the cytoplasm, consists of an energy investment phase followed by an energy generation phase. The second stage of glycolysis, also known as the energy payoff phase, results in the formation of ATP, NADH, and pyruvate. Carbon dioxide is not a product of this phase of glycolysis; instead, it is released during the oxidative decarboxylation of pyruvate and during the Krebs cycle.
Describe the roles of the nervous muscular circulatory and respiratory systems in heat regulation
how does the way animal cells use their vacuoles compare to the way plant cells use theirs?
a) both plant and animal cells use some of their vacuoles to store food
b) both plant and animal cells rely on their vacuoles to help the cells maintain their shape
c) all animals cells need to have vacuoles, but one plant cells in the roots need to have them
d) animal cells use their vacuoles constantly, but plant cells only need theirs during drought
Answer:
The most suitable answer is option A.
Explanation:
Vacuoles are found in both plant cells and animal cells. Vacuoles are larger in plant cells while animal cells have smaller but more in the numbers. Vacuoles act as a storehouse for food or of nutrients a cell needs to survive.
They also store waste products some times so the rest of the cell is protected from contamination. However, in plants, they provide support to the cell and help them to maintain shape. It increases in size with age.
Thus, the correct answer is option A.
Which resource do you think is most important to our survival?
What is the process of osmosis?
Osmosis is a special case of diffusion. Water, like other substances, moves from an area of higher concentration to one of lower concentration. ... In this example, the solute cannot diffuse through the membrane, but the water can. Water has a concentration gradient in this system.
Water is said to have a low vapor pressure. How does this property affect large bodies of liquid water on Earth? It prevents them from freezing. It prevents them from flowing underground. It prevents them from spreading onto land. It prevents them from drying out.
Answer: Option D
Explanation:
The water starts boiling at 100°C and at this stage all the water will be converted into vapor which is not possible as the temperature of water never reaches 100°C.
It has low vapor pressure and low volatility. Example: More petrol will be converted into vapor as compared to water at the same temperature.
hence, this property of water allows it to remain in liquid state and not being dried out during summers.
During michelle's __________ month of pregnancy, the eyes, ears, and nose form.
How many times would you expect proline to appear in this peptide if it were made up of a completely random assortment of the 20 most common amino acids?
The region of a long bone between the end and the shaft is known as the
The metaphysis is the region of a long bone that is found between the end (epiphysis) and the shaft (diaphysis). It houses the growth plate, which is where bone growth occurs.
Explanation:The region of a long bone that is found between the end and the shaft is known as the metaphysis. It is located between the epiphysis (the end of the long bone) and the diaphysis (the shaft of the bone). The metaphysis plays a significant role in the growth of the bone because it houses the growth plate, which is where bone growth occurs during childhood and adolescence.
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When assisting a child with ventilation:
a.do not over-inflate his lungs
b.pinch his nose closed
c.allow the child to exhale on his own
d.all of the above?
Photosynthesis uses sunlight to convert water and carbon dioxide into what two things
Photosynthesis utilizes sunlight to convert water and carbon dioxide into food (glucose) and oxygen.
What is Photosynthesis?Photosynthesis may be defined as a process through which green plants and most photosynthetic algae synthesize their own food with the help of carbon dioxide and water in the presence of sunlight.
The complete reaction of photosynthesis is as follows:
[tex]6CO_2+12H_20[/tex] → [tex]C_6H_1_2O_6+ 6O_2+ 6H_2O[/tex].During the process, the inorganic carbon of carbon dioxide is converted into the organic carbon of carbohydrates.
The process of photosynthesis involves the following:
The absorption of light energy by the green pigment is known as chlorophyll.The conversion of captured light energy into chemical energy along with the splitting of water molecules into hydrogen and oxygen.The reduction of carbon dioxide into carbohydrates (glucose).Therefore, the process of photosynthesis utilizes sunlight to convert water and carbon dioxide into food (glucose) and oxygen.
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Which one has a cell membrane prokaryotic or eukaryotic cells?
Both prokaryotic and eukaryotic cells have a cell membrane. The cell membrane acts as a barrier that separates the cell's interior from its environment. It is a crucial component in maintaining the cell's integrity and function.
Both prokaryotic and eukaryotic cells have a cell membrane. The cell membrane, also known as the plasma membrane, is a common component in all types of cells. It acts as an outer covering that separates the cell's interior from its surrounding environment.
Prokaryotic cells, which include bacteria and archaea, and eukaryotic cells, which include animals, plants, fungi, and protists, both have cell membranes. The cell membrane is essential for maintaining the cell's integrity and regulating what enters and exits the cell.
Ammonia, which is a byproduct of protein metabolism, is converted to __________ primarily in the __________.
Final answer:
Ammonia, a byproduct of protein metabolism, is converted into urea in the liver to reduce toxicity and then excreted through urine primarily in the liver.
Explanation:
Ammonia, which is a byproduct of protein metabolism, is converted to urea primarily in the liver. During protein metabolism, amino acids are broken down and the amino group is removed in a process known as deamination. Ammonia (NH₃) is produced as a result. Because ammonia is toxic, the liver rapidly converts it into urea, which is a less toxic compound. The urea then travels to the kidneys, where it is excreted from the body through urine. Therefore, urea is the principal waste product in mammals, resulting from the nitrogen in amino acids.
In a healthy human, the typical life span of a red blood cell is
In a healthy human, the typical life span of a red blood cell is of approximately 120 days or 4 months.
What are red blood cells?
Red blood cells are also referred to as red cells, red blood corpuscles, or erythrocytes. These are the most common type of blood cells in the blood and the vertebrate's principal means of delivering oxygen and other nutrients to the body tissues via blood flow through the circulatory system in the body.
The normal life span of the RBC in healthy adults is approximately 110-120 days. Hemolysis can be defined as the shortening in the survival of circulating RBCs in the blood to a value of less than 100 days. RBCs die and enters the spleen which is known as the graveyard of RBCs in the body.
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1. In which oceanic zone would you find the highest water pressure?
a) Abyssopelagic
b) Bathypelagic
c) Epipelagic
d) Mesopelagic
In which oceanic zone would you find the highest water pressure?
Abyssopelagic
Bathypelagic
Epipelagic
Mesopelagic
Mesopelagic
Answer:
a) Abyssopelagic
What factor most influences the power pf a stream to erode and transport material?