The small air sacs in the lungs through which gases are exchanged are the
Which organelle appears as a stack of membranes?
A. mitochondrion
B. vesicle
C. cell membrane
D. Golgi apparatus
How do floating discs correspond to the rate of photosynthesis?
You are dispatched to a 22 y/o male that crashed on his mountain bike and is c/o difficulty breathing. you arrive on scene to find the pt sitting up in the middle of the trail speaking in one to two word sentences and clutching the left side of his chest. upon further evaluation you discover that your pt has altered loc, bp of 110/76, hr 140 and tachypnea at 28 bpm. what state of shock is your pt in?
Select the part of the ATP molecule that stores and releases energy.
A
B
C
D
Answer:
The correct answer is B.
Explanation:
ATP stands for adenosine triphosphate. ATP is considered as the energy currency of the cell because it provides lots of energy during metabolic processes. The energy in ATP is stored as a high energy terminal phosphate bond which means the energy will release when the terminal phosphate bond will break.
As the terminal phosphate bond breaks the energy is released which is used by the cell to perform some metabolic activity. After this reaction, the ATP converts into ADP. So the correct answer is B.
Which term refers to a sperm count of less than 20 million/ml?
What is the function of mitochondria in cells?
A.Storing water
B.Packaging proteins
C.Forming lipids
D.Producing energy
Energy production in cells occurs as a result of oxidative phosphorylation in the mitochondria.
The correct answer is D
What are the mitochondria's primary roles?Membrane-bound cell organelles known as mitochondria (mitochondrion, singular) produce the majority of the chemical energy required to fuel cellular metabolic operations.
What occurs if the mitochondria fail to function?The lack of energy in the cells is caused by damaged mitochondria. Damage is caused by the cells' accumulation of unneeded oxygen and fuel molecules. Different mitochondrial diseases can have different symptoms. It relies on the number of faulty mitochondria and their location in the body.
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What is the cause of the hyperpigmentation seen in people with cushing syndrome?
a. permissive effects of aldosterone when cortisol levels are altered
b. hypersensitivity of melanocytes with sun exposure
c. elevated levels of acth
d. abnormal levels of cortisol?
from the time of my beginning, my part was made of fibrous material called collagen, which is secreted by
When caring for a client who is on intravenous therapy, the nurse observes that the client has developed redness, warmth, and discomfort along the vein. which intervention should the nurse perform for this complication?
Which description best contrasts skeletal and smooth muscle tissue? Skeletal muscle tissue contains no bands, whereas smooth muscle tissue is streaked with bands. Skeletal muscle tissue stores energy and blood, whereas smooth muscle tissue controls movement. Skeletal muscle tissue regulates muscles attached to bones, whereas smooth muscle tissue regulates the heart. Skeletal muscle tissue controls voluntary movements, whereas smooth muscle tissue controls involuntary movements.
Skeletal muscle tissue controls voluntary movements and has a striped appearance, while smooth muscle tissue controls involuntary movements and lacks the striped appearance.
Explanation:The best contrast between skeletal and smooth muscle tissue is that skeletal muscle tissue controls voluntary movements while smooth muscle tissue controls involuntary movements. Skeletal muscle tissue forms skeletal muscles, which attach to bones or skin and control locomotion and any movement that can be consciously controlled. They are also characterized by their striped or striated appearance under a microscope due to the regular arrangement of contraction proteins. On the other hand, smooth muscle tissue occurs in the walls of hollow organs like the intestines, stomach, and blood vessels, and it controls involuntary movements. Smooth muscle does not have the banded or striated appearance because their cells are arranged in sheets instead of bundles, and each cell has a single, centrally located nucleus.
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A pregnant woman is admitted to the hospital with a diagnosis of placenta previa. which action would be the priority for this woman on admission
Which of the following represents a chemical change?
Select one: a. rocks being smoothed by rapid water movement b. the pink color of a rose c. iron's attraction to a magnet d. decomposition of stone due to acid rain
What are brown bears doing as a result of panting
Answer:
Maintaining body temperature by cooling down
Explanation:
Brown bears have adaptive strategies to lower down the body temperature during hot months. Under hot sunny day, their breath rate is increased with shallow breaths. This is called as panting. The shallow breaths allow the cooler air to circulate over the moist mouth surfaces and leads to lower down the body temperature.
Which description applies to the prominent transverse lines located on the anterior surface of the sacrum?
A 21-year-old patient has a head injury resulting from trauma and is unconscious. there are no other injuries. during the assessment what would the nurse expect to find when testing the patient's deep tendon reflexes?
_____ bonds form and hold the DNA together.
A. hydrogen
B. peptide
C. polar
A unique blue is a blue that has no _______ or green tint.
The male reproductive gland which produces a fructose-rich solution which nourishes sperm and constitutes about 60% of the volume of semen is:
Which of the following statements about the cells of any multicellular organism is true?
The same genes are expressed in each cell.
Almost all of the cells have the exact same DNA.
Each cell has completely different DNA.
Different genes are expressed in different types of cells.
Answer:
Almost all of the cells have the exact same DNA.
Explanation:
The "Father of Modern Taxonomy" is _____.
4. The science team uses the information to suggest the main outcome of the hypothesis.
a. Make a prediction
b. Test the hypothesis
c. observe the problem
d. Define a problem
5. This step includes recording data, taking photos, and coordinating information.
a. Make a prediction
b. Test the hypothesis
c. observe the problem
d. Define a problem
6. This a critical part of the process that verifies that the predicted outcome is valid.
a. Test the hypothesis
b. Make a prediction
c. Hypothesis becomes a theory
d. Observe the problem
7. The scientists analyze the data gathered from the experiment and summarize what they have learned from the experiment.
a. Define a problem
b. make a hypothesis
c. Make a conclusion
d. Test the hypothesis
Answer:
Q 4. The correct answer. Make a prediction
Before starting any research scientists make some predictions about the main outcome of the hypothesis by using the information from old literature and research work.
Q 5. The correct answer is b. Test the hypothesis
Hypothesis is just a prediction so to validate a hypothesis prove should be given which can be in the form of experimental data, photos, and research work.
Q 6. The correct answer is c. Hypothesis becomes a theory
A critical part of the process that verifies that the predicted outcome is valid is when a hypothesis becomes a theory with appropriate proof that support hypothesis.
Q 7. The correct answer is c. Make a conclusion
The last work of a research is to make a conclusion by analyzing the data gathered from the experiment.
Which statements could be categorized in the "Asexual" section of the Venn diagram? Check all that apply.
mitosis
diploid cells
two cell divisions
gametes
identical DNA
The right answer are : mitosis, diploid cells, and identical DNA.
The answers "two cel divisions" and "gametes" refers to a division by meiosis which is a sexual reproduction.
Asexual reproduction or asexual reproduction is a mode of reproduction, which - as opposed to sexual reproduction - corresponds to the capacity of living organisms to multiply alone, without a partner, without involving the fusion of two gametes of opposite sexes. Asexual reproduction is observed in multicellular (animal and plant) and unicellular organisms. In botany, the term often used for the asexual multiplication of plants is vegetative multiplication. In all cases of asexual reproduction, the result is identical to the mother.
Mycorrhizae are associations formed by fungi that grow on the roots of trees. These fungi penetrate into the roots of the trees. The trees produce energy through photosynthesis and share it with the fungi. The fungi act as decomposers, breaking down dead organic matter to provide nutrients for the trees to grow. What kind of a relationship is exhibited in this example? The fungi share a mutualistic association with the trees. The fungi are a parasite for trees. The fungi share a commensal association with the trees. The fungi are predators for the trees.
Answer: The fungi share a mutualistic association with the trees.
Mutualism is a relationship among two species, in which two species lives in close association with each other. In this relationship both the species are benefited.
The given situation, is an example of mutualistic association of the fungal species with the tree. This is because of the fact that the fungal species provides trees with nutrients after the process of decomposition, that are necessary for the growth of the trees. In return the fungal species obtains carbohydrates produced by photosynthesis from the roots of the trees. Therefore, both the species are benefited hence, it is a mutualistic association.
Answer: A.
The fungi share a mutualistic association with the trees.
Explanation:
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What is the original source of variation that natural selection can act upon?
The original source of variation that natural selection can act upon is genetic diversity in a population, which comes from mutation and sexual reproduction.
Explanation:The original source of variation that natural selection can act upon is primarily genetic diversity in a population, which comes from two main sources: mutation and sexual reproduction.
Mutation, a change in DNA, is the ultimate source of new alleles or new genetic variation in any population. It can result in an individual having a trait different from other individuals. The changes caused by mutation can provide beneficial, harmful or neutral effects on an organism's phenotype which is a critical aspect for natural selection.
Sexually reproducing species also contribute to genetic diversity through unique combinations of alleles assembling to produce unique genotypes in offspring. Natural selection can only act if there is variation among individuals in a population, and this variation must be genetically based.
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Cells are the basic
a0
a1 of our bodies.
Answer:
A1 Biological A2 Unit
Explanation:
Cells are the basic Biological Unit of our bodies. Cells are the building blocks of all living organisms, that means us too!! A combination of cells makes tissues and those make up other things like organs and so on. This is why Cells are the basic Biological Unit of our bodies
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from where do the gems used in jewelry come?
A. They are non-metallic silicate B. They are metallic minerals C. They are non-metallic minerals D. They are metallic ore
The gems commonly used in jewelry come from mining efforts and are usually classified as non-metallic minerals.
Jewelry uses a wide variety of gems and other valuable elements such as:
Sapphires EmeraldsGoldSilverTopazand many more. These gems and elements all have distinct properties and therefore classifications.
Gold and silver are considered metallic ore. They are mined and have properties of metals. One of these defining properties is that both gold and silver may be melted and used to produce other substances. However, though they are used in jewelry, they are not considered to be gems.
Gems in jewelry are those that cannot be melted into other substances and have only a dull, submetallic shine, except the diamond. Gems are unique and desired for their colors. Their lack of shine comes from their relatively low refractive index. This is a property common to nonmetallic minerals. Therefore option C is correct.
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How can you tell if a biological molecule is a carbohydrate?
Which microscope would be most useful for quickly estimating the number of red blood cells in a patients blood sample
Im pretty sure it is electron
Why doesn’t each child look exactly alike?