Which hormone increases in production during puberty and is generally believed to be responsible for physical growth and the development of pubic hair in both males and females?
if you have ever used a compass, you know that it can be used to help navigate. It does this with a needle that always points north, so you know which direction you are heading. The needle points to the north because earth is like a giant magnet, with both north and south poles. According to current theory, the creation of earth's magnetic field is closely linked to
How long does it take the moon to cycle through all of its phases ?
Answer:
If you mean "About how long does it take for the moon to cycle through all its different observable shapes?"
Then the answer is a month.
Explanation:
No explanation but I got it right on my quiz haha.
Why does the Antarctic experience different temperatures than the Arctic?
Alternate versions of a gene are called _______________. they can code for different ________________ of the same character. select one:
a. bases; alleles
b. alleles; bases
c. bases; chromosomes
d. chromosomes; traits
e. alleles; traits
Alternate versions of a gene are called alleles and they can code for different traits. These varied forms of gene loci contribute to genetic diversity within a population, leading to a variety of traits.
Explanation:Alternate versions of a gene are called alleles. They can code for different traits of the same character. Therefore, the correct answer to your question is e. alleles; traits. To elaborate, the word 'allele' is derived from the term 'allelomorph', which means 'other form'. These allelic forms represent variation in the sequence of DNA at a particular gene locus and they contribute to the genetic diversity within a population. The different alleles can result in variations of a trait, like eye or hair color.
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Which lobe of the cerebrum is responsible for planning and initiating voluntary motor movement?
What happens to the speed of a chemical reaction when a catalyst is present
A catalyst is a compound which when added to a chemical reaction increases the rate of a chemical reaction by decreasing the activation energy required by the reactants.
What is a Catalyst?
A catalyst is a compound or element that is added to a chemical reaction increases the rate of a chemical reaction. This is possible because the catalysts decreases the amount of activation energy required by the reactants to undergo collision which will form the product.
A catalyst is found to be most effective in finely divided form as it has more surface area and at optimum conditions of pH, temperature and pressure. Example: Nickel is used as a catalyst in hydrogenation of palm oil into margarine to increase the rate of the reaction.
Catalyst increases the rate of a chemical reaction but they do not give any information about the spontaneity of a chemical reaction.
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When a disease-causing agent enters an organism, the immune system alerts which specialized cells? red blood cells epithelial cells white blood cells somatic stem cells
The right answer is white blood cells.
Leukocytes (white blood cells) are an important link in the protection against infections. Indeed, by acting sequentially, they allow the elimination of many foreign agents among viruses, bacteria, fungi and parasites. There are two main categories of cells from a functional point of view, the leucocytes of innate immunity and the leucocytes of adaptive immunity, according to the specificity of non-self recognition.
Which of the following statements about ATP (adenosine triphosphate) is correct? Hints Which of the following statements about ATP (adenosine triphosphate) is correct? The hydrolysis of ATP is an endergonic process. The cycling between ATP and ADP + Pi provides an energy coupling between catabolic and anabolic pathways. The hydrolysis of ATP can supply energy needed for catabolic pathways. Almost all of the free energy released on the hydrolysis of ATP is released as heat. The energy release on hydrolysis of ATP is the result of breaking a high-energy bond.
ATP is an unstable but essential molecule that provides energy for cells. It does this through a process called hydrolysis, which generates energy through the breakage of high-energy bonds with its phosphate groups. This energy is used to power various cellular activities, often through the process of phosphorylation.
Explanation:ATP (adenosine triphosphate) is a highly unstable molecule which functions as the primary energy-supplying molecule for living cells. ATP is composed of a nucleotide, a five-carbon sugar, and three phosphate groups. The bonds connecting these phosphates, known as phosphoanhydride bonds, are high-energy bonds. When ATP undergoes hydrolysis, it dissociates into ADP (adenosine diphosphate) and an inorganic phosphate ion (P¡), releasing energy which is largely used to perform cellular work. Cells use ATP by coupling the exergonic reaction of ATP hydrolysis with endergonic reactions. During this process, ATP donates its phosphate group to another molecule through a process known as phosphorylation. The phosphorylated molecule, due to this added phosphate group, is left in a higher energy, less stable state, enabling it to undergo its own endergonic reaction.
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Oxygen starvation in a cell will most likely lead to
Water can flow freely into a gummy bear. Which of the following is a term for movement across a cell membrane that does not require energy?
active transport
passive transport
idle transport
The right option is; Passive transport
Passive transport is process by which ions and other molecular substances moves across cell membranes or from a region of higher concentration to a region of lower concentration without need of energy input. Passive transport is a simple, natural form of membrane transport that does not need the cell to utilize energy to achieve the movement.
Please help me! I have a mid term tomorrow, and this question is on the review.
Describe how high-energy electrons are ultimately responsible for driving the photosynthetic reactions
High-energy electrons are ultimately responsible for driving the
photosynthetic reactions due to the following:
They help transform ADP and NADP into ATP and NADPH respectively These are then sent to power light-independent reactions that create sugar.Light energy from the Sun excites the electrons in the plants which provides
them with energy for movement through membranes.
The high energy electrons help transform ADP and NADP into ATP and
NADPH respectively which are then used in the light-independent stage to
create sugar which is the final product of photosynthesis.
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According to life without gravity why can astronauts muscles become weak
A woman with long hair is a suspect in a burglary case. at the crime scene, several long hairs were found attached to a broken lock of the safe. the police obtain a warrant and request a sample of 25 to 50 hairs from this woman. they tell the woman it is important that they pull the hairs from her head rather than to merely cut the hairs. the police suspect that the woman was stealing to help support a drug habit.
a. why is it important that the police pull the hairs from her head rather than cut her hair?
b. why is it necessary to obtain 25 to 50 hairs from this woman?
c. the woman denies that she is currently taking drugs and states that she stopped using drugs a year ago. explain how the police can determine if the woman has been off drugs for over one year.
d. suppose the hairs of the woman match the hairs found at the crime scene. why does this not necessarily prove that she was the guilty party?
If you had made a wet mount of the scrapings from your teeth would you have seen the same organisms as you did with the simple stain?
Final answer:
While a wet mount can allow the observation of living organisms, using a simple stain provides increased contrast to better visualize cell details. Differences in cell morphology and arrangement are more discernible with staining, enabling accurate identification of bacterial species.
Explanation:
If you had made a wet mount from the scrapings from your teeth, it is possible that you might have observed some of the same organisms as you would with a simple stain, but the visualization and the types of organisms identified could be different. Making a wet mount involves placing the specimen in a drop of water on a slide with a cover slip over it, thereby allowing you to observe living organisms and their motility. However, without staining, it can be difficult to see the details of cellular structures and morphology, which means that differences in cell morphology and arrangement may be less apparent.
On the other hand, when performing a simple stain, such as using safranin, specific structures within the various bacteria from your teeth would be more easily visible under the microscope. This staining method increases the contrast and makes it easier to assess morphology, and characteristics such as shape and arrangement. The staining also enables easier differentiation between different types of bacteria when examining colonial morphology, as unstained cells may be transparent and more challenging to differentiate.
Therefore, depending on the method used—simple stain versus wet mount—there might be differences in the observable organisms and in the level of detail you can discern. Simple staining not only allows for better visualization but also for more accurate evaluation of the morphology and identification of different bacterial species present in the sample.
Organisms need a way of storing energy because _____.
a.
a cell can't always immediately use all the energy it gets
b.
an organism often has times when no energy is used
c.
a cell can release only stored energy
d.
a cell cannot create energy and must get it from elsewhere in the organism
Organisms need a way of storing energy because cell can't always immediately use all the energy it gets.
What are cells?Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.
Moreover, cells are of two types: eukaryotic, which contain a nucleus, and prokaryotic cells, which do not have a nucleus, but a nucleoid region is still present. Prokaryotes are single-celled organisms, while eukaryotes may be either single-celled or multicellular.
Therefore, cells provide structure and function for all living things, from microorganisms to humans. Scientists consider them the smallest form of life. Cells house the biological machinery that makes the proteins.
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The nurse is assisting an older adult client into position for a sigmoidoscopy. which position would the nurse place the client in?
For a sigmoidoscopy procedure, the nurse would place the client in the left lateral decubitus position, also known as the left-side lying position with the right knee flexed. This position provides better access to the sigmoid colon and reduces the client's discomfort, making it the standard for such examinations.
Explanation:The student has asked about the position a nurse would place an older adult client in for a sigmoidoscopy procedure. A sigmoidoscopy is a minimally invasive medical examination used to view the interior of the sigmoid colon by inserting a flexible tube with a camera into the rectum. This procedure is similar to a colonoscopy, but it focuses specifically on the lower part of the colon.
For a sigmoidoscopy, the nurse would commonly assist the client into the left lateral decubitus position, also known as the left-side lying position, with the right knee flexed towards the chest. This position is chosen because it provides the doctor with better access to the sigmoid colon and makes it easier to advance the sigmoidoscope through the rectum. Additionally, positioning the client in this manner can help reduce discomfort during the procedure, ensuring a smoother and more efficient examination process.
Understanding the rationale behind specific medical positioning, such as that for a sigmoidoscopy, is crucial for healthcare professionals to ensure patient comfort and procedure success. The left lateral decubitus position is widely recognized as the standard for sigmoidoscopy procedures due to its anatomical and practical benefits.
When the wrong blood type is given to a patient, the antibodies in the patient's blood react with the antigens on the surface of the transfused blood causing a reaction called
a. neutralization.
b. precipitation.
c. agglutination.
d. coagulation?
Rose bushes in northern states drop their leaves and go dormant in the winter. What type of population growth pattern does an aphid population that lives on these rose bushes have? A. Logistic B. Exponential C. Bust and boom D. Random
where does the heat that warms your body come from?
Heat transfer is the movement of thermal energy from one place or material to another, and is caused by temperature differences.
Explanation:Heat is something familiar to all of us. We feel the warmth of the summer sun, the hot vapor rising up out of a cup of hot cocoa, and the cooling effect of our sweat. When we feel warmth, it means that heat is transferring energy to our bodies; when we feel cold, that means heat is transferring energy away from our bodies. Heat transfer is the movement of thermal energy from one place or material to another, and is caused by temperature differences. For example, much of our weather is caused by Earth evening out the temperature across the planet through wind and violent storms, which are driven by heat transferring energy away from the equator towards the cold poles.
Describe how actin and myosin filaments within muscle fibers produce the motile force for muscle contraction
Martin finds women with long, dark hair very sexually alluring, and all of his sexual partners have long, dark hair. charles also finds women with long, dark hair alluring. in order for charles to become aroused and reach orgasm, long, dark hair must be present, whether it is on a woman or not. martin's behavior might be classified as __________, whereas charles' behavior might be classified as __________.
Mariyam, a marine biologist, measures the length of a great white shark at 4.5 m long and its teeth at an average of 50 mm long. She wants to convert both measurements to centimeters.
What should her new numbers be?
Answer:
Her new numbers are 450 and 5.
Explanation:
Given information:
Length of white shark = 4.5 m
Length of its teeth = 50 mm
She wants to convert both measurements to centimeters.
We know that,
1 m = 100 cm
Using the above conversion we get
4.5 m = 4.5 × 100 = 450 cm
The length of white shark is 450 cm.
We know that,
1 mm = 0.1 cm
Using the above conversion we get
50 mm = 50 × 0.1 = 5 cm
The length of its teeth is 5 cm.
A postpartum patient with hearing impairment asks the nurse, how will i know when the baby cries? what does the nurse instruct the parent to do?
Snails and insects belong to which group of organisms?
An older adult client tells the nurse, i give myself a mineral oil enema every day. what is the appropriate nursing response?
Anatomy 12 transport movement across the cell membrane worksheet vocabulary list
A nurse is caring for a client with severe gastritis who vomited a large amount of blood. a lavage is prescribed by the health care provider. which response does the nurse expect when using a room temperature irrigating solution?
What is one major difference between sandstone and siltstone?
A.) particle size
B.) calcium carbonate content
C.) method of formation
D.) amount of organic material
Answer:
A. particle size
i did the quiz and got it right
What is one way a person can help reduce the level of carbon dioxide in the atmosphere?
Final answer:
To reduce atmospheric carbon dioxide, one can contribute to reforestation efforts and avoid deforestation, as trees absorb CO₂ during photosynthesis. Alternative energy sources and reducing certain agricultural practices are also key measures.
Explanation:
One way to help reduce the level of carbon dioxide in the atmosphere is through reforestation—planting new trees and avoiding deforestation. Trees and plants absorb carbon dioxide and store it as part of their biomass through a process called photosynthesis. Since carbon dioxide is a major greenhouse gas that contributes to climate change, by increasing the number of trees, we can enhance the natural capacity of the environment to act as a carbon sink, thereby mitigating the effects of excess CO₂ in the atmosphere. Aside from reforestation, other measures include using alternative fuel sources that do not produce carbon dioxide, like solar and wind energy, and reducing activities such as livestock agriculture which contribute significantly to greenhouse gas emissions.