An atom with an atomic number of 12 and a mass number of 25 can best be described by which of these?
A) An atom that contains 12 protons and 13 neutrons.
B) An atom that contains 13 protons and 12 neutrons.
C) An atom that contains 12 protons and 25 neutrons.
D) An atom that contains 25 protons and 12 neutrons.
Answer:
A) An atom that contains 12 protons and 13 neutrons.
Explanation:
An element consists of three components that determines its charge and the mass number. These components are the proton number, electron number and neutron number. The mass number, denoted by A, is the sum of the proton number and the number of neutrons in the atom of that element.
The proton number determines the atomic number of an element (Z). An element that is neutrally charged will contain equal number of proton and electrons. A positively charged atom will contain more protons than electrons while a negatively charged atom will contain vice versa.
Hence, to get the number of neutrons in the atom, one will subtract the proton number from the mass number i.e. A - Z
Therefore, in this question of an atom that contains atomic number of 12 and a mass number of 25, the neutron number will be 25 - 12 = 13.
Thus, the proton number=atomic number is 12 and the neutron number is 13.
A transparent metric ruler is placed in the stage of a microscope and observed under low power. The diameter of the field of vision was found to be 2 millimeters. How many meters is the diameter
a) .02
b) 2000
c) .2
d) .002
When fat enters the small intestine, an emulsifier called is released into the small intestine to break up the large fat globules into smaller fat droplets?
In what/which domain(s) of life is/are microorganisms represented
Males can eliminate alcohol from their bodies faster than women due to having higher amounts of
Answer: Dehydrogenase enzyme.
Explanation:
Males can eliminate alcohol more faster than women due to dehydrogenase enzyme. Women have the ability to absorb more alcohol because they have little or no ADH in their liver and stomach so they do not eliminate alcohol out of their body easily.
This is opposite in case of males as they have ADH in stomach and liver which does not allows the alcohol to be absorbed into the bloodstream.
Hence, it is eliminated out of the body more easily in men.
The deepest depression found on the surface of mars is the
White blood cells (wbcs) are more resistant to lysis than red blood cells (rbcs). when looking at a sample of blood for wbcs, what could you do to reduce interference from rbcs? white blood cells (wbcs) are more resistant to lysis than red blood cells (rbcs). when looking at a sample of blood for wbcs, what could you do to reduce interference from rbcs? mix the blood in an isotonic solution and allow the wbcs to float to the top. mix the blood in a salty solution to cause the rbcs to lyse. mix the blood in a hypotonic solution, which will cause the rbcs to lyse. mix the blood in a hypertonic solution, which will cause the rbcs to lyse.
The part of the cerebellum that communicates with the cerebral cortex is the
The term osteoid refers to the organic part of the matrix of compact bones. the term osteoid refers to the organic part of the matrix of compact bones.
a. True
b. False
DNA and RNA are both...
A) made up of nucleotides and carry molecules from one end of a cell to another
B) monomers of protein molecules that provide structure to a cell's nuclear membrane
C) protein molecules that carry the unique genetic information of an organism
D) molecules that contain genetic information and are made up of nucleotides
DNA and RNA are molecules that contain genetic information and are made up of nucleotides. RNA transports while DNA,and RNA contains both genetic information,and are molecules
When you are preparing to look at a spoecimen always start with your microscope in?
During asexual reproduction, the genetic material of the parent is passed on to the offspring by
A basic need addressed by _____ is to regulate reproduction.
What is kinesiology, and what are the seven types of science it encompasses?
Kinesiology is a scientific study of human movement and its impact on health, society, and performance. It encompasses seven branches - exercise physiology, sports psychology, motor control, biomechanics, adapted physical education, sports medicine, and athletic training.
Explanation:Kinesiology is a scientific field that studies the movement of the human body and its impact on health, society, and performance. The seven branches that it encompasses are:
Exercise Physiology: This explores how the body responds to physical activity and develops fitness. Sports Psychology: This investigates the psychological factors that affect sports performance. Motor Control: This focuses on how the brain controls body movements. Biomechanics: This explores how the body moves from a physical and mechanical perspective. Adapted Physical Education: This deals with physical education for people with disabilities. Sports Medicine: This includes the prevention and treatment of sports-related injuries. Athletic Training: This involves the prevention, treatment, and rehabilitation of injuries in athletes. Learn more about Kinesiology here:
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What is a close relationship between two organisms that live together called?
A close relationship between two organisms that live together is called symbiosis.
An organism is any individual living entity that can perform all the basic functions of life.
Symbiosis is a type of interaction between two different species of organisms that live in close proximity to each other and have a mutually beneficial relationship.
Example: Relationship between bees and flowers, in which the bees benefit from the nectar and pollen of the flowers, while the flowers benefit from the pollination services of the bees.
Therefore, symbiosis is defined as a close relationship between two organisms that live together.
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Which latitudinal zone grows the most grapes for wine?
A glucose molecule is the
a. Smallest type of protein
b. Monomer of starch and cellulose
c. Largest of the carbohydrate polymers
d. Fundamental unit of genetic material
B right?
The range of temperatures in which an insect is able to live and reproduce is one element of that organism's ____________________, a description of its ecological requirements.
Refer to this portion of a dichotomous key to answer the question.
1. (a) Has a single dorsal fin ® 5 (b) Has a double dorsal fin ® 2
5. (a) Has a small fin on back near tail ® 6 (b) Has no fin on back near tail ® 7 6. (
a) Has barbs near the mouth ® Catfish (b) Does not have barbs near the mouth ® 10
7. (a) Tail is asymmetrical ® Sturgeon (b) Tail is symmetrical ® 8
What would the result be when identifying a fish with a single dorsal fin, no fin on its back near the tail, and a tail that is asymmetrical?
A single exercise session is referred to as resistance ________, while the combination of many consecutive sessions over time is resistance ________.
Flax seeds fatty fish walnuts and dark green leafy vegetables contain beneficial fats known as
Final answer:
Flax seeds, fatty fish, walnuts, and dark green leafy vegetables contain omega-3 fatty acids, including ALA, EPA, and DHA. These nutrients are beneficial for heart health, reducing inflammation, and supporting brain development. Foods rich in omega-3, like salmon, trout, and tuna, should be part of a balanced diet for optimal health.
Explanation:
Flax seeds, fatty fish, walnuts, and dark green leafy vegetables contain beneficial fats known as omega-3 fatty acids, which are a type of polyunsaturated fat. These include alpha-linoleic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). Omega-3 fatty acids are known for their health benefits, such as reducing the risk of heart disease, lowering blood triglycerides, preventing inflammation, and promoting normal brain and eye development in infants.
Food sources rich in omega-3 fatty acids, like salmon, trout, and tuna, are excellent for heart health. Furthermore, ALA is found in plant sources like flaxseeds and walnuts, while EPA and DHA are primarily found in fish and fish oils. Incorporating these foods into one's diet can lead to significant health benefits, ranging from improved cardiovascular health to enhanced cognitive function.
Why is it important to constantly swirl the contents of the beaker after the catalase has been added to the hydrogen peroxide?
Catalase is an enzyme which breaks down hydrogen peroxide into water and oxygen. Hydrogen peroxide is a toxic by-product of metabolism, so it is essential for it to be broken down quickly, or else, it would cause damage to cells. Without the aid of catalase, decomposition would take much longer, thus, would not be fast enough to sustain human life. Some experiments are done to determine the rate of an enzymatic reaction between catalase and peroxides. In decomposition reaction of peroxide by catalase , the easiest molecule to measure would be oxygen as a final product. While certain procedures are applied in determining the amount of oxygen, the techniques of swirling are applied for accuracy of reactions. Swirling is important because it makes it possible for further collisions to take place between the catalase enzyme and the hydrogen peroxide. More collisions mean the reaction is occurring to the fullest achievable extent.
A client has inhaled, drawing air into the oropharynx. from this location, air will:
Put these terms in order from least complex to most complex: organ system, tissue, cell, organ.
The relationship between flowering plants and bees is best described as ________.
the answer is mutualistic because the bees are helping the seedlings MUTATE into blossoms and fruits
The cranial nerve that innervates the muscles for facial expression is called the ______ nerve and is cranial nerve ____.
Solar power is a renewable resource because _______. a. it is continually replenished b. using the resource consumes it c. it can be found everywhere on earth d. all of the above Please select the best answer from the choices provided A B C D
Answer:
Its A
Explanation:
Solar power is renewable because it is constantly replenished by the Sun, ensuring it does not deplete and can be used sustainably for future generations.
Solar power is a renewable resource because it is continually replenished. This replenishment means that solar energy is not used up when we place solar panels in sunlight; instead, it is a source of energy that can sustain its use indefinitely without depletion. Solar energy, for instance, comes from the fusion within the Sun, which continuously radiates electromagnetic energy toward Earth and is estimated to continue doing so for about five billion more years. Unlike non-renewable resources such as fossil fuels, which can be depleted, renewable resources like solar energy are remade by natural processes at the same rate that humans consume them, assuring their availability for future generations if used sustainably.
Which would feel warmer to the touch a bucket of water at 50 or a bathtub filled with water at 25?
The smallest unit that can evolve is a _____.
The smallest unit that can evolve is a population. This is because evolution refers to changes in the genetic composition of a population over time, not individuals. Natural selection, driving force of evolution, operates on variations in populations.
Explanation:The smallest unit that can evolve is a population. Let me explain why. Evolution refers to changes in the genetic composition of a population over time. Individual organisms do not evolve in the biological sense. Instead, the genetic makeup of their population changes. This is because evolution is driven by the process of natural selection, which operates on variations in the genetic makeup of populations, not individuals.
For instance, if a certain trait gives some individuals in a population an advantage in survival and reproduction, those individuals will likely have more offspring on average than individuals without the trait. Over time, this can lead to the trait becoming more common in the population, thereby leading to evolution. Thus, a population is the smallest biological unit that can evolve in response to natural selection.
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A population is the smallest unit that can evolve. Evolution occurs when there are changes in the gene frequencies within a population over time, which can be caused by mutations. However, individual organisms, consisting of cells, comprise populations and many of the processes that underpin evolution occur at the cellular and molecular level.
Explanation:The smallest unit that can evolve is a population. In the context of biology and evolution, a population refers to a group of individuals of the same species living in the same area who can interbreed. This is because evolution occurs when there are changes in the gene frequencies within a population over time. These changes can result from mutations, which are random changes in hereditary material that can be caused by a variety of factors. For instance, if a mutation allows an individual within a population to better adapt to their environment, they might be more successful in survival and reproduction. Over many generations, this new genetic trait could become common within that population, signifying that the population has evolved.
However, it's important to note that while populations are the smallest unit that can evolve, they are made up of individual organisms, and those organisms are made up of cells. A cell is the smallest independently functioning unit of a living organism, and many of the processes that underpin evolution occur at the cellular and molecular level. For example, mutations occur when there's a change in the sequence of nucleotides in an organism's DNA, which is located within the cell.
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Two of the regions on the abdomen are the left and right inguinal regions. the combining form inguin/o- means