We do this quickly because our psychological immune systems have
Which component of blood allows oxygen from the air to move from the lungs to cells of the body?
Answer:
Red blood cells
What limited protection do cells have against the damaging effects of uv radiation?
Cells are partially defended against UV radiation by the ozone layer, which filters most high-energy UV rays, and by melanin in the skin, which helps block UV-B rays. Some organisms have enzymes like photolyase to repair UV-induced DNA damage, while plants have protective pigments and epidermal layers.
Cells have limited protection against UV radiation through various biological mechanisms. The ozone layer acts as a barrier, absorbing high-energy UV radiation like UV-C, thus reducing potential damage to cellular DNA. For lower-energy UV-B that reaches the Earth's surface, cells have developed some defense strategies. One such mechanism is the formation of melanin in the skin, which provides a protective dark pigment to shield against further UV damage, a process which we observe as suntanning.
A lizard lives in a desert. which would be an adaptation for this lizard?
The adaptations in a lizard living in a desert include camouflage, heat tolerance, nocturnal behavior, burrowing, and specialized diet.
What are the adaptations?A lizard living in a desert would likely have several adaptations to help it survive in the harsh environment. Some of these adaptations may include:
1. Camouflage: The lizard may have a color pattern that matches its surroundings, allowing it to blend in and avoid predators.
2. Heat tolerance: The lizard might have physiological adaptations that help it withstand high temperatures, such as a higher tolerance for dehydration or a more efficient cooling mechanism.
3. Nocturnal behavior: To avoid the extreme heat of the day, the lizard might be active primarily at night when temperatures are cooler.
4. Burrowing: The lizard may have adaptations for digging, allowing it to create burrows to escape the heat and provide shelter.
5. Specialized diet: The lizard might have a diet that is specifically suited to its environment, such as eating insects or plants that are more common in the desert.
These are just a few examples of adaptations that a desert lizard might possess to help it survive and thrive in its arid environment.
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True or false: strength training improves bone density decreasing the risk for osteoporosis.
Why are structures within plant and animal cells called organelles?
For the same reason that human organs function to maintain a person's health and vitality, cells' "organs" do the same to maintain the homeostasis of the cell.
What are cell organelles?An organelle is a specialized component with a particular function that is often found within a cell in cell biology.
The word organelle refers to the concept that these structures are components of cells, much like organs are to the body.
They perform vital tasks that are required for cells to survive, including gathering energy, producing new proteins, getting rid of waste, and other activities.
Therefore, the nucleus, mitochondria, endoplasmic reticulum, and numerous other organelles are examples of core organelles.
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Structures within plant and animal cells are called organelles because they are specialized structures that have specific functions, just like organs in the body.
What are organelles?Organelles are specialized structures within a cell that have specific functions. They are like the organs of the human body, but much smaller. Organelles are enclosed by membranes, which separate them from the rest of the cell and allow them to maintain their own internal environment.
Organelles work together to keep the cell alive and functioning properly. They are essential for all of the activities necessary for life, such as growth, metabolism, and reproduction.
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What are three organelles that are only found in plant cells and not in animal cells?
Explain how the structure of dna and proteins can be used to document
Foods made with solid fats and/or added sugar are considered to contain empty calories because
Why are enzymes important to cells? they help bring about chemical reactions. they store large quantities of energy. they provide structural support. they form the two layers of membranes. description?
they help bring about chemical reactions
Which arrangement is represented in the periodic table?
A.
a repeating pattern of outer electrons
B.
random order for atomic mass
C.
a reverse sequence for the number of neutrons
D.
repeating patterns of isotopes
Answer: Option (A) is the correct answer.
Explanation:
Elements that belong to the same group show similar chemical properties.
This is because elements that lie in the same group have same number of valence electrons. Hence, they tend to show same type of reactivity which makes them exhibit similar chemical properties.
For example, all alkali metals are very reactive in nature as all of them contain 1 valence electron.
Therefore, in a group pattern of outer electrons is repeating.
Thus, we can conclude that a repeating pattern of outer electrons is the arrangement which is represented in the periodic table.
Select all that apply. A balance must exist between substances entering and exiting cells. Most animals remove substances by _____. eating sweating breathing urinating
Most animals remove substances by sweating, breathing and urinating.
Excretion is the expulsion to the outside of harmful or useless products that are in the blood and intercellular plasma.
Waste from the body is eliminated through the respiratory and excretory systems.
The excretory system is a set of organs and other structures that are responsible for eliminating urine and sweat, which are liquids that have diluted non-usable substances by the body.The sweat glands produce sweat from the water that has filtered out of the blood capillaries.Some non-usable substances are secreted from the blood capillaries into the nephron, obtaining urine.Breathing with its permanent action of inhaling and exhaling air introduces oxygen to the body and discharges carbon dioxide.Therefore, we can conclude that waste from the body is eliminated through the respiratory and excretory systems, where most animals remove substances by sweating, breathing and urinating.
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Give two reasons why understanding sea depth or bathymetry is important when tracking marine animals
The two reasons why understanding sea depth or bathymetry is important when tracking marine animals: a) Different marine animals live at different depths. b) Bathymetry can help scientists track the movements of marine animals.
a) Different marine animals live at different depths. The water depth affects the temperature, salinity, pressure, and availability of food, all of which can impact the distribution and behavior of marine animals.
For example, some fish species, such as tuna, prefer to live in the open ocean where the water is deep and cold. Other fish species, such as sharks, prefer to live in shallower waters where there is more food and light. By understanding the bathymetry of an area, scientists can better predict where to find different marine animals.
b) Bathymetry can help scientists track the movements of marine animals. Marine animals often migrate between different depths in the ocean, depending on the time of year or their life cycle.
For example, some whales migrate to shallower waters to breed and give birth, while others migrate to deeper waters to feed. By understanding the bathymetry of an area, scientists can track the movements of marine animals and learn more about their behavior.
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The two reasons why understanding sea depth or bathymetry is important when tracking marine animals are bathymetric data and accurate bathymetry.
Understanding sea depth, or bathymetry, plays a pivotal role in effectively tracking marine animals for multiple reasons.
The first reason is that the bathymetric data provides essential information about the underwater landscape, aiding in the identification of key oceanic features like canyons, seamounts, and ridges. This knowledge is crucial for comprehending marine animal behavior and migration patterns. It helps scientists pinpoint critical habitats, feeding zones, and breeding grounds, enhancing conservation strategies.
The second reason is that accurate bathymetry is critical for determining how depth variations affect animal movements and behavior. Dive patterns may be influenced by shallow places, whilst thermoregulation tactics may be influenced by deeper regions. Furthermore, understanding bathymetry helps to keep marine species safe by preventing them from stranding in shallow waters. Overall, including bathymetric data into tracking efforts increases our understanding of complex marine ecosystems and the deep linkages that shape them.
The two reasons are bathymetric data and accurate bathymetry.
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What is paleoanthropology?
a. it is practiced by archaeologists only.
b. it is defined as the study of early humans.
c. it is practiced by physical anthropologists only.
d. it is concerned with fossilized skeletal remains only.
e. it is defined as the study of fossilized non-primate mammals?
The formation of a protective superficial layer of skin cells filled with keratin is called
The answer is keratinization. This is sometimes called as cornification action. It is the development of dead, protective, and superficial layers of cells occupied with keratin. Happens on all bare skin surfaces. Cells transfer from stratum basale to stratum or in other words deep to superficial in a period of 15-30 days.
The sensory experience of bending one's knees or raising one's arms illustrates _____.
The ________ cell is interposed in the pathway between the photoreceptors and the ganglion cells.
Describe how chromosomes and centrioles are related to one another
In the some areas of Africa, droughts have caused clean drinking water sources to dry up. How would technology most likely be useful for this region?
Technology can assist drought-stricken areas of Africa by providing desalination plants, rainwater harvesting systems, solar-powered water pumps, and environmentally sustainable water transport and purification methods.
In regions of Africa where droughts have caused clean drinking water sources to dry up, technology could play a significant role in mitigating the crisis. Advanced technologies suitable for these regions include desalination plants to convert saltwater into freshwater, rainwater harvesting systems to collect and store rainwater for use during dry periods, and solar-powered water pumps to access deep groundwater sources. Additionally, creating infrastructure for water transportation from water-rich to water-scarce areas can help address the water shortages.
Moreover, green science and technology can provide water without harming the environment. Examples include the diversion of river water with subsequent purification in constructed wetlands and using renewable energy to pump water to arid regions. These solutions not only supply water but may also enhance water quality and contribute to environmental sustainability.
If a cell is placed in a hypotonic solution, the net movement of water would be
What is the chance that a human zygote will receive?
The arbitrary and capricious test is very well defined.
a. true
b. false
During _______________ the homologous chromosome pairs separate in a random fashion leading to genetic diversity among the offspring.
Classify the sides of the mountain based on the direction of the prevailing winds.
Answer:
Leeward on the left Windward on the right that all you had to say partner
Explanation:
Have A Good Day ;)
Number datatype would be appropriate for a zip code.
a. True
b. False
explain how humans can influence biodiversity by changing the environment.
A condition in which the sides of the chest move opposite each other during breathing is called:
explain how the movement of tectonic plates, volcanic eruptions, earthquakes and climate change can contribute to the earth's species ability to adapt to changes in environmental conditions
Answer:
he is right
Explanation:)
Which structural feature of the cell membrane allows molecules such as oxygen and carbon dioxide to diffuse into and out of the cell? *
The cell membrane contains proteins molecules.
The cell membrane contains cholesterol molecules.
The cell membrane is made up of two layers of phospholipids.
The cell membrane is anchored to the cytoplasm by the cytoskeleton.
The two layers of phospholipids in the cell membrane allow molecules like oxygen and carbon dioxide to diffuse into and out of the cell.
Explanation:The correct structural feature of the cell membrane that allows molecules such as oxygen and carbon dioxide to diffuse into and out of the cell is the two layers of phospholipids. The cell membrane is composed of a phospholipid bilayer which has a hydrophobic interior and hydrophilic exterior. This arrangement allows small, nonpolar molecules like oxygen and carbon dioxide to easily pass through the membrane by simple diffusion.
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Which body functions increase during the fight-or-flight reaction?