Answer:
Duramen - The central or inner dark coloured non-functional wood or secondary xylem, not takes part in the conduction of water is called Duramen or Heartwood.
Answer:dark hard position of secondary xylem is called Duramen
Explanation:
what kind of energy is necessary to initiate the process of photosynthesis?
Answer:
Light energy.
justify the statement conservation of forest helps in the protection of environment
Answer:
conservation of forests helps in protection of environment as forests gives food fodder and shelter to animals
Explanation:
The importance of forests cannot be underestimated. We depend on forests for our survival, from the air we breathe to the wood we use. Besides providing habitats for animals and livelihoods for humans, forests also offer watershed protection, prevent soil erosion and mitigate climate change.
In bakery when _______ is added to the dough for preparing bread, the dough rises f
Answer:
it is Yeast, yeast makes it rise
please help me nowwwwwwwwww it is not D
Which of the following best describes sickle-cell anemia?
A) Caused by environmental factors that an individual was exposed to during pregnancy.
B) A hereditary genetic mutation that causes a resistance to malaria.
C) An inherited disorder that increases the risk of contracting malaria from mosquitos.
D) A genetic mutation that is inherited from a dominant allele of one parent.
Answer:
A.
Explanation:
This is when a female reproduces alone
Answer:
Sickle cell anemia is one of a group of disorders known as sickle cell disease. Sickle cell anemia is an inherited red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen throughout your body. Normally, the flexible, round red blood cells move easily through blood vessels.
Explanation:
Based on "Sickle cell anemia is an inherited red blood cell disorder" taken from the text, I would say the correct answer is C, because it says "an inherited disorder" and describes Sickle cell anemia.
Hope this helps! :D
If you were on Earth at 60° N and looked directly up around noon, what would you see?
Answer:
You would experience 24 hours of it being night or darkness
Explanation:
it is more than 90 degrees away from the suns vertical ray
Hope this Helps
fluid-filled sacs that cushion synovial joints are called
Answer:
They are called bursea
Explanation:
erythropoietin is a hormone produced by the _______________ to increase the rate of production and maturation of erythrocyte progenitor and erythroblast cells.
Answer: Kidneys
Explanation:
Both the kidneys and the liver produce erythropoietin. If only one answer is allowed, I would choose kidney because it produces nearly 85 percent of it.
Which event is an example of condensation?
A. A puddle dries when exposed to the Sun.
B. A lake becomes a skating rink in the winter.
C. Fog forms in a valley.
D. A spilled drop of rubbing alcohol disappears.
Answer:Fog forms in a valley
Explanation:School
1. State one possible negative effect of a warming trend on Earth. Specify how this effect will
have a negative impact on the living environment.
Answer:
One stated possible negative effect of a warming trend on earth is that the polar ice caps could melt.
Explanation:
Specification on how this will have a negative impact on the living environment is that it will cause sea levels to rise this is negative because: tsunamis will become more severe and damaging to land. Rain storms will have severe floods then what we have now.
Hope this helps.
A team of deep-sea divers and biologists is exploring the open ocean. As team members dive downward from the surface, they observe significant changes to the ocean community at a depth of about 200 meters. What is the main cause of the changes at this depth?
A. loss of brightness of the water
B. increasing salinity of the water
C. increasing temperature of the water
D. decreased oxygen concentration of water
Answer:
A
Explanation:
sunlight is the main change. sun light cannot penetrate into the deep layers of the ocean and availability of oxygen is also low there. this causes the considerable amount of organisms to live in the upper layers of the ocean and we can only observe decomposing organisms in the deeper layers!
Which of the following organisms are prokaryotes?
a
plants
b
animals
c
bacteria
d
fungi
Question 1 (1 point)
Which of the following is NOT something that can cause your core temperature to change?
Question 1 options:
Fevers caused by disease
Enzymes denaturing in your cells
When the external temperature gets really hot or cold
Energy produced by your muscles when you exercise
Question 2 (1 point)
Why is it so important to maintain a core temperature of 37°C?
Question 2 options:
Your core temperature doesn't stay at 37°C, it will actually change and reflect the temperature outside.
Your body can only make cells at 37°C, and we need cells because that is what our body is made of.
It is just best to keep that temperature so you don't shiver or sweat.
The enzymes in our cells work best at this temperature and these enzymes are needed to carry out all the reactions that happen in our body to keep us alive.
Question 3 (1 point)
What happens to your enzymes when they get too hot?
Question 3 options:
The enzymes denature and the active site alters, so the substrate can't fit in there properly and chemical reactions don't happen as fast.
The enzyme changes shape, but the substrate still fits in and the chemical reaction can still take place.
The enzyme dissolves and the pieces then need to be rebuilt before they can be used again.
Nothing, the enzyme can handle temperature changes in the body.
Question 4 (1 point)
Which organ is super important in helping you in both conserving heat and cooling your off?
Question 4 options:
Skeletal System
Excretory System
Respiratory System
Integumentary (Skin) System
Question 5 (1 point)
The __________ is the temperature-regulating center of the brain and can detect temperature changes to the blood as it flows through the brain.
Question 5 options:
Skin
Hypothalamus
Nervous system
Thymus
Question 6 (1 point)
Which of the following best describes how your muscular and skin systems work to warm you up if you get too cold?
Question 6 options:
Your muscles begin to contract fast and this movement helps you warm up
Small erector muscles work to raise the hairs on your skin. This helps trap the air close to the skin, goose bumps appear and the air acts as an insulator
blood vessels narrow keeping the blood away from the skin to keep you warm
Sweat glands release sweat to ensure you stay the proper temperature
Question 7 (1 point)
Which of the following best describes how your circulatory and skin systems work together to cool you off when you get too hot?
Question 7 options:
Your blood vessels (capillaries) dilate allowing blood to flow near the surface of your skin. This allows the heat to be released through your skin to help you cool off.
You begin to sweat which leaves salt on your skin after the sweat evaporates.
The hairs on your skin will lie flat to allow better evaporation of sweat and to allow the heat to be released into the air
Goose bumps show up to help your muscles contract to help cool you off
Question 8 (1 point)
If your core temperature falls too low, it is called __________________
Question 8 options:
hyperthermia
thermoregulation
hypothermia
dehydration
Question 9 (1 point)
Extreme tiredness and lethargy (slow, not moving much) are the first signs of someone experiencing hypothermia?
Question 9 options:
True
False
Question 10 (1 point)
When people exercise in hot weather, which of the following could happen?
Question 10 options:
People can acclimate to the hotter conditions over time producing more sweat that has lower salt levels
Homeostasis, this could cause their blood sugar levels to rise
Excessive sweating can lead to dehydration and heat stroke. Drinking lots of water can help prevent this situation from happening
Both A and C
1pregunta= 3
2pregunta=2
3pregunta=3
4pregunta= 3
5pregunta= 2
1. Enzymes denaturing in your cells cannot change the core temperature.
2. The enzymes in our cells work best when the core temperature is at 37°C .
3. When the enzymes get cold they denature and the active site alters.
4. Integumentary (Skin) System helps in both conserving heat and cooling off.
5. The Hypothalamus is the temperature-regulating center of the brain.
6. Small erector muscles work to raise the hairs which helps in warm up.
8. If your core temperature falls too low, it is called Hypothermia.
9. Extreme tiredness and lethargy are the first signs of someone experiencing hypothermia is True.
Enzymes are biological molecules, specifically proteins, that act as catalysts in various chemical reactions within living organisms.
1. Enzymes denaturing in your cells
2. The enzymes in our cells work best at this temperature and these enzymes are needed to carry out all the reactions that happen in our body to keep us alive.
3. The enzymes denature and the active site alters, so the substrate can't fit in there properly and chemical reactions don't happen as fast.
4. Integumentary (Skin) System
5. Hypothalamus
6. Small erector muscles work to raise the hairs on your skin. This helps trap the air close to the skin, goose bumps appear and the air acts as an insulator
7. Your blood vessels (capillaries) dilate allowing blood to flow near the surface of your skin. This allows the heat to be released through your skin to help you cool off.
8. Hypothermia
9. False
10. Both A and C
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3. Which of the following resembles a hypothesis?
Joe witnesses a shooting star and makes a wish.
Shen wonders how shooting stars form in outer space.
Rodney claims that shooting stars burn from entering Earth's atmosphere.
Jane researches how much friction causes combustion.
Answer:
Rodney claims that shooting stars burn from entering Earth's atmosphere.
Answer:
Rodney claims that shooting stars burn from entering earths atmosphere
Explanation:
Does hermatite occur naturally
Answer:
I would say yes.
Explanation:
Hematite is found as a primary mineral and as an alteration product in igneous, metamorphic, and sedimentary rocks. It can also form during contact metamorphism when hot magmas react with adjacent rocks. The most important hematite deposits formed in sedimentary environments.
I hope I'm correct
Answer:
Hematite is found as a primary mineral. it is naturally formed in sedimentary environments.
Gypsum is a naturally occurring stone, a metallic salt of calcium. It commonly forms as an evaporite from the dissolution of limestone by exposure to sulphuric acid from volcanic activity
So the answer is YES
whitch statment best compares and contrasts lipids and carbohydrates?
Answer:
The key difference between carbohydrates and lipids is that the carbohydrates are immediate energy sources in living organisms while the lipids act as a long-term energy resource and tend to be utilized at a slower rate. Carbohydrates and lipids are important nutrients in living organisms.
Explanation:
What skeletal issue causes the outward curving of the spine, or a hunchback posture?
Answer:
b. Kyphosis
Explanation:
Answer:
Kyphosis
Explanation:
Cơ thể người không tiêu hóa được loại đường nào?
Answer:
Cơ thể người không tiêu hóa được loại đường nào? Cơ thể người không tiêu hóa được Xenlulozo.
How are all living cells organized?
Answer:
TaxonomyExplanation:
The cell is the most basic unit of life. Similar cells together form tissues. Similar tissues together form organs. Organs work together in organ systems. Organ systems form complex organisms. Because living things are diverse, taxonomy was created to group organisms into categories and to understand their evolutionary relationships.
Hope this helps :}
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Answer:The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Explanation:Cells are divided into several compartments, each with a characteristic structure, biochemical composition, and function.
These compartments are called organelles. They are delimited by membranes composed of phospholipid bilayers and a number of proteins specialized for each type of organelle.
All eukaryotic cells have a nucleus surrounded by a nuclear envelope, and a plasma membrane that borders the whole cell.
Most eukaryotic cells also have endoplasmic reticulum, a Golgi apparatus, lysosomes, mitochondria, and peroxisomes.
Describe the importance of buffers in solutions in allowing the process shown above to
take place.
Buffers are solutions that help maintain a relatively stable pH level when an acid or base is added to them. They play a crucial role in various biological, chemical, and industrial processes.
1. **Maintaining pH Stability:** Many chemical reactions, especially those involving biological systems, are highly sensitive to changes in pH. Buffers prevent drastic shifts in pH by absorbing or releasing hydrogen ions (H+) in response to the addition of acids or bases. This stability is vital for maintaining the proper functioning of enzymes, cellular processes, and other biochemical reactions.
2. **Biological Systems:** Living organisms have specific pH ranges at which their metabolic processes function optimally. Buffers in bodily fluids like blood help maintain these pH ranges, ensuring that cellular processes, enzyme activities, and other physiological functions occur correctly.
3. **Chemical Reactions:** In many chemical reactions, the rate and outcome are influenced by the pH of the solution. Buffers ensure that the pH remains within a certain range, allowing reactions to proceed at the desired rate and producing the intended products.
4. **Laboratory Settings:** Buffers are essential in laboratory settings where accurate and controlled pH conditions are required. Researchers use buffers to create stable environments for conducting experiments, ensuring that the conditions mimic natural or desired circumstances.
5. **Industrial Processes:** Buffers are used in various industrial processes, such as in the manufacture of pharmaceuticals, food products, and chemicals. They help maintain consistent reaction conditions, enhance yield, and prevent unwanted side reactions.
6. **Environmental Impact:** In some cases, buffers can help mitigate the environmental impact of chemical processes. By maintaining a stable pH in waste streams, buffers can prevent the release of harmful byproducts or mitigate the impact of acidic or alkaline effluents on ecosystems.
7. **Quality Control:** Buffers are important in quality control processes, especially in industries where accurate pH measurements are crucial. For example, in the production of electronics or semiconductors, precise pH control is essential to ensure product reliability.
8. **Drug Formulation:** Buffers play a role in drug formulation to stabilize the pH of pharmaceutical products. This ensures that drugs remain effective and safe throughout their shelf life.
In summary, buffers are critical in maintaining pH stability, which is essential for the proper functioning of biological systems, chemical reactions, and industrial processes. They allow processes to take place under controlled conditions and prevent pH-related disruptions that could otherwise negatively impact the outcome of these processes.
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The Salmonella bacteria infect human, when eating contaminated food or water, causing some symptoms as diarrhea. Which part of the alimentary canal is most affected ? A) Mouth B) Intestine C) Oesophagus D) Pharynx
Answer:
B. Intestine
Explanation:
Salmonella bacteria live in the intestines of people, animals and birds. Most people are infected with salmonella by eating foods that have been contaminated by feces. Commonly infected foods include: Raw meat, poultry and seafood.
Opinion: is our current water use sustainable? Why or why not?
Answer:
This actually depends, since most of our water is filtered (depending on where you live) then yes it is sustainable! But if our water wasn't filtered then no, it would not be sustainable. This is because of all the things that go into our water before it's filtered. We've got plastic, trash, dead fish and all that, in some cases sewer system drainage and a lot more that goes into the filtered water that we drink.
Explanation:
IM THE DUMMEST PERSON ALIVE
plz help me on this it’s due today
Answer:
Help with what boo?
if a cell has 24 chromosomes, how many chromosomes would each of its four daughter cells have after meiosis?
Answer:
Because there are two rounds of division without duplication in between, the genetic content is cut in half. Each of the 4 daughter cells will only end up with half of the genetic content of the parent cell. Therefore, after meiosis, the daughter cells would have only 12 chromosomes each.
the packaging and distribution center of the cell is the
Answer:
golgi apparatus
Explanation:
What is the smallest family in the phylum Aves?
The smallest family in the phylum Aves is the bird family.
What is Phylum?Phylum may be defined as a prevalent taxonomic classification that classifies above class and below kingdom, identical to the division in botany.
The phylum Aves are generally adapted to fly. Hence, it consists of birds or organisms who have the ability to fly in the environment and are classified into this category with a lot of exceptions like bats which belong to mammals.
Therefore, the smallest family in the phylum Aves is the bird family.
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NEED HELP ASAP!!! WILL GIVE BRAINLIEST!!!!
Hom-ozygous tall pea plants look the same as heterozygous tall pea plants. Formulate a pollination experiment to identify whether a tall pea plant is hom-ozygous or heterozygous. Explain your answer in 3-5 sentences.
Answer:
You can cross the plant with hom-ozygote recessive pollen, and the height of the progeny will show whether the plant was heterozygous or hom-ozygous.
Explanation:
Explain how the structure of an enzyme can affect its function.
Explanation:
i hope the answer will help you !
How can detritivores be beneficial to the environment?
O A) allow predation to occur
O B) rid waste and dead matter
O C) provide food for autotrophs
O D) facilitate photosynthesis in plants
Answer:
B
Explanation:
How can detritivores be beneficial to the environment?
O A) allow predation to occur
O B) rid waste and dead matter
O C) provide food for autotrophs
O D) facilitate photosynthesis in plants
ANSWER:O A) allow predation to occur
O A) allow predation to occurO B) rid waste and dead matter
O C) provide food for autotrophs.
O D) facilitate photosynthesis in plants
__________________CARRY ON LEARNING
CAN YOU BRAINLEST ME PLEASE
PLEASE HELP
which of the following should be a characteristic of a stable ecosystem
a. an increase in human interference
b. an obundance of biodiversity
c. a high number of predators and a lesser number if producers
d. a lack of interdependence of organisms
Answer:
b. an obundance of biodiversity
A day on Earth is approximately 24 hours, which is the amount of time it takes for Earth to complete one
rotation around its axis. How do the two tidal bulges created by the Moon align with the number and
frequency of tides for each coastal city??
Answer:
Because the Earth rotates through two tidal “bulges” every lunar day, coastal areas experience two high and two low tides every 24 hours and 50 minutes. High tides occur 12 hours and 25 minutes apart. ... This occurs because the moon revolves around the Earth in the same direction that the Earth is rotating on its axis.
The two bulges created by the Moon align with the number and frequency of tides for each coastal city by the fact that the coastal cities experienced two consecutive high and low tides within the time interval of 24 hours and 50 minutes.
What do you mean by Tidal bulges?Tidal bulges may be defined as a type of natural phenomenon that significantly involves the gravitational attraction between the moon and the Earth provoking the water in the oceans which is present in a fluid state and mobile in nature.
These attributes force the water to be pulled toward the moon and stimulate the production of bulges. And due to the revolution of the earth on its axis changes the location of the water.
The process of tidal bulges accomplished the consistent revolution of the moon around the earth with respect to the rotation of the earth on its axis in the same direction.
Therefore, the coastal cities experienced two consecutive high and low tides within the time interval of 24 hours and 50 minutes.
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