Answer:
Explanation:
a
What kind of bond holds the sugar-phosphate backbone of DNA together?
Answer: Covalent bonds or phosphodiester bonds.
Explanation:
Bases are held together by hydrogen bonds, and the DNA backbone is held together by phosphodiester bonds.
What do trees, seaweed, snails, and giraffes all have in common?
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Answer:
They are all living organisms
Explanation:
All flora and fauna life on Earth is alive, they all accomplish different tasks throughout their lives, and have different roles throughout an ecosystem's food chain.
Answer:
the largest of all the ecosystems, oceans are very large bodies of water that dominate the Earth's surface. Like ponds and lakes, the ocean regions are separated into separate zones: intertidal, pelagic, abyssal, and benthic. All four zones have a great diversity of species. Some say that the ocean contains the richest diversity of species even though it contains fewer species than there are on land. The intertidal zone is where the ocean meets the land — sometimes it is submerged and at other times exposed, as waves and
Explanation:
They have excellent eyesight, and when one giraffe stares, for example, at a lion a kilometre away, the others look in that direction too. Giraffes live up to 26 years in the wild and slightly longer in captivity.
in most algae, certain fungi and higher green plant, main components of cell wall is
Answer: Eukaryotic organisms, such as algae, fungi, and higher plants, have multilayered cell walls composed in large part of either cellulose or chitin . ... Cellulose microfibrils form the scaffold of all plant cell walls. brainliest?
Explanation:
In what ways can geographic position be considered a temperature control?
Answer:
Near water, change in elevation, or change in latitude.
Explanation:
How is secondary succession different from primary succession?
Select one:
Secondary succession occurs after a disturbance in an area that was
previously uninhabited.
Secondary succession occurs when animals are introduced to an area that
had only plants.
Secondary succession occurs after a disturbance in an area in which the soil
has remained intact.
Secondary succession occurs over a longer period of time than primary
succession.
Answer:
Secondary succession occurs after a disturbance in an area in which the soil
has remained intact.
What is the difference between a guard cell and a white blood cell?
Guard cells are found in plants and white blood cells are found in animals.
What are guard cells?Guard cells are specialised plant cells that regulate gas exchange in the epidermis of leaves, stems, and other organs. They are created in pairs, with a stomatal orifice separating them. What are white blood cells?The immune system's white blood cells, also known as leukocytes or leucocytes, are responsible for defending the body against both infectious diseases and foreign invaders. All white blood cells are created and developed from hematopoietic stem cells, which are multipotent cells found in the bone marrow. All parts of the body, including the blood and lymphatic system, include leukocytes.Guard cells function to allow gaseous exchange and white blood cells are responsible for the functioning of the immune system.
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What is required for sympathetic speciation to occur?
A. Continuous gene flow populations'
B. Geographic separation of a population
C. Emergence of a reproductive barrier
D. A limited separation of members of a population, followed by reintroduction back into the parent population
Answer:
I'm no biology teacher but I think its C im in 8th grade and did this last year i believe(:
Explanation:
Hope this helps you out!
(Evolution #2 - 10)All of the following adaptations would help a plant survive in the desert EXCEPT.
Question options:
a)Having deep roots to reach ground water
b) Having a larger central vacuole to help store water
c) Having no leaves to help retain water
d) Having a thicker cell wall to help retain water
im stuck on the first 2 answers
Answer:
Trees in and around Austin are uprooted from heavy wind
Explanation:
Goose island is already on the coast so it's used to salt water.
The birds won't become extinct in one day.
It takes a while for a river to be completely destroyed naturally.
How does nature make its "natural selection"? (What decides which genes get passed on and which don't?)
Answer:
The nucleus
Explanation:
The nucleus contains chromosomes that contain the DNA molecules and in these DNA molecules, genes are found that are responsible for the passing of characters from the parents to the children. Hence, nucleus is your answer.
Hope my explanation helps !
Which of the following statements correctly summarizes the process of photosynthesis?
A. Reactions and the Calvin Benson cycle of the grana release oxygen into the atmosphere.
B. Light dependent reactions convert CO2 to carbohydrates, which light independent reactions use to produce NADPH2 and ATP.
C. CO2 is converted to carbohydrates through reactions fueled by products from the light independent reactions.
D. Reactions in the thylakoids capture free energy from sunlight and use it to convert glucose and oxygen to water and carbon dioxide.
The correct statement would be 'CO2 is converted to carbohydrates through reactions fueled by-products from the light DEPENDENT reactions'. Photosynthesis produces simple carbohydrates.
What is photosynthesis?Photosynthesis is a series of chemical reactions by which plants can produce simple carbohydrates by using the energy from the sun and carbon dioxide.
Photosynthesis has two types of reactions: light-dependent reactions and light-independent reactions.
Light-dependent reactions produce energy (mainly in the form of ATP), whereas light-independent reactions produce carbohydrates (i.e., glucose).
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what is the general route food takes through the body?
Answer:
While food is in the small intestine, nutrients are absorbed through the walls and into the bloodstream. What's leftover (the waste) moves into the large intestine (large bowel or colon).
Explanation:
Answer:
it moves into the large intestine (large bowel or colon).
Explanation:
Humans, like other organisms, require energy for growth and repair. When cells create ATP for energy, carbon dioxide is produced as a waste product. How does the body respond to this process in order to maintain homeostasis?
Answer:
The circulatory and respiratory systems interact to transport carbon dioxide to the lungs, where it is expelled from the body.
Explanation:
Carbon dioxide produced by the cells and tissues during cellular respiration is removed from the body through the interaction of the circulatory and respiratory system. The medium of transport of carbon dioxide is the blood which carries to the lungs, where it is expelled from the body in ordernto maintain homeostasis in the body.
Carbon dioxide molecules are transported in the blood from body tissues to the lungs in three ways:
1. Dissolution directly into the blood - due to its greater solubility in blood than oxygen, carbon dioxide is dissolved in blood plasma. On reaching the lungs, it leaves the blood by diffusion and is then expelled out of the body.
2. Binding to hemoglobin - carbon dioxide binds reversibly with haemoglobin in the red blood cells to form a molecule called carbaminohemoglobin. When it reaches the lungs, the carbon dioxide freely dissociate from the hemoglobin and is expelled from the body.
3. Carried as a bicarbonate ion - the majority of carbon dioxide molecules are carried as part of the bicarbonate buffer system. In this system, carbon dioxide diffuses into the red blood cells. The enzyme carbonic anhydrase within the red blood cells quickly converts the carbon dioxide into carbonic acid (H2CO3) which then dissociates into bicarbonate and hydrogen ions. The bicarbonate ions leaves the red blood cells in exchange for chloride ions in the plasma. The bicarbonate ions then travel in plasma to the lungs, where they enter the red blood cells again. It combines with hydrogen ions from the haemoglobin to form carbonic acid. Carbonic anhydrase breaks carbonic acid down into water and carbon dioxide which is then expelled from the lungs.
In the graph, “ppm” stands for parts per million. A concentration of one ppm is a ratio of one part to one million parts. Concentrations can also be expressed as a percentage. Why do you believe scientists choose ppm over percentage in some cases?
Answer: very small amounts are easier to express as ppm.
Explanation: 1 ppm = 0.0001 %
Answer:
Concentrations like the ones shown in the graph are relatively small. Writing them as percentages would require decimal points and many leading zeros. Therefore, scientists choose ppm over percentages to show CO2 concentrations.
Explanation:
This is the exact answer from PLATO so maybe change the wording a little.
When gases trap heat in the atmosphere causing the temperature to rise this is called the greenhouse effect.
A. True
B. False
Answer:
A. True
Explanation:
Gases trap the heat in the atmosphere causing the temperature to rise, this is called the greenhouse effect.
Amoeba and algae are examples. Sometimes they are called the odds and ends kingdom because its members are so different from one another. Some "act" like plants; others like animals. They are eukaryotic, unicellular & some have whip-like appendages for movement. Prakanote
Answer: Protists
Explanation:
The protists are organisms which have characteristics similar to both plants and animals. There is huge diversity of protists on earth as they are single celled organisms and they increase in numbers by reproduction. They have a specialized cellular structure which includes organelles like nucleus, mitochondria, and others which are characteristic features of the eukaryotic organisms. They live in moist environment. They engulf their prey this way they are heterotrophic and they can also photosynthesize like plants.
In a food web, all arrows should point to
A. decomposers
B. consumers
C. producers
Answer:
A. decomposers
Explanation:
In a food web, all arrows should point to decomposers
PLEASE HELP ME THIS IS PART 2!!!!!!!!! I WILL MARK BRAINLIEST
Answer:
D
Explanation:
Cancer cells are developed through a malfunction within the cell cycle. Which
point of the cell cycle would have the highest risk of cancer if it malfunctioned or
did not work properly? *
O
Interphase
Mitosis
Meiosis
Cytokinesis
Answer: Interphase
Explanation:
Circle the correct answer
1. True False
In AM waves, amplitude changes.
15. According to Hamilton's rule, the natural selection favors altruism when rB>C, where ris
coefficient of relatedness (fraction of genes shared), B is benefit, the average number of extra
offspring that the recipient of an altruistic act produces, and C is cost, how many fewer offspring
the altruist produces. Let's say that members of species X produce 4 offspring on average.
Individual A of species X is in a perilous situation that will result in its death if the individual A
does not get help. First cousin of individual A decides to risk its own life in order to save
Individual A. what would be maximum risk of death for the cousin, in order for altruistic act to
be favored by natural selection?
A) 6 2596
B) 12.5%
C) 25%
D)50.
step by step explain:
Answer:
Hamilton's rule, mathematical formula that supports the notion that natural selection favors genetic success, not reproductive success per sea. But by the recipient of the altruism, ℂ is the cost (in number of offspring equivalents) suffered. The altruistic behaviour, and r is the genetic relatedness of the altruist to the beneficiary.
Explanation:
I am not fursure on what your answer would be but I hope that what I put can help you find your answer.
Earth's average temperature typically fluctuates (cycles)
O True
O False
Answer the following questions in full sentences and paragraphs, using at least 150 words, in the essay box below.
1. Which organisms are carnivores? Herbivores? Omnivores?
2. If the ecosystem is balanced, which populations should be the largest? The smallest?
3. Imagine a group of hunters kills half of the rabbit population. How will the other organisms be affected?
4. Imagine disease kills 85 percent of the wolf population. How will the other organisms be affected?
5. Imagine a foreign mountain lion species is introduced into the ecosystem. How will the other organisms be affected?
Answer:
1. Lions are carnivores, deers are herbivorous, and foxes are omnivores
2. The herbivorous should be the largest the omnivores should be next and the smallest should be the carnivores
3. The carnivores will start to disappear since there is no more food for them
4. There will be more herbivorous since there will be no more predators
5. There will be less herbivorous and increase in the population of that species since they don't have any enemies at that ecosystem
Explanation:
How did Francesco Redi disprove the idea of spontaneous generation?
He showed that flies were not produced by meat.
He showed that microorganisms are present in air.
He showed that microorganisms cause disease.
He showed that flies spread disease.
Francesco Redi showed that microorganisms are present in air thereby disproving the idea of spontaneous generation and is denoted as option B.
What is Spontaneous generation?This is supposed production of living organisms from non living substances.
The jar was left open and had maggots in it means the flies laid their eggs which later turned to the maggot which was what Redi observed during the experiment.
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1.Explain 1 -2 biological benefits that photosynetic plants aboard the ship could provide to the crew.
2. Suggest 2. -3 important considerations and/or measures that the crew should take to ensure the plants ability to survive and photosynthesize. Justify your ideas by explaining why they are necessary.
Can someone please help me on this?
Answer:
Provide food stuff and oxygen.
Explanation:
Making of food and supply of oxygen are the two biological benefits that photosynthetic plants provide to the crew of the ship. The plants make their own food for itself as well as for other organisms and also release oxygen that is produced in the process of photosynthesis. The crew should placed the plants in the sunlight and provides water daily in order to survive and photosynthesize. The sunlight and water are very important because sunlight opens the stomata through which carbondioxide gas enters into the leaves which combines with the water forming glucose and oxygen. Glucose is stored in the plant body whereas some oxygen is used by the plant during respiration and the extra is released in the air through stomata.
HELP THIS IS DUE IN 1 HOUR (No links or I'll Report)
The air you breathe out
A) contains more carbon dioxide than the air you breathe in.
B) contains less carbon dioxide than the air you breathe in.
C) contains more carbon dioxide than oxygen.
D) contains less water vapor than the air you breathe in.
Answer:
A) contains more carbon dioxide than the air you breathe in
Explanation:
So based on our basic knowledge, we know that we breathe in air, keep the oxygen, and breathe out everything else plus the carbon dioxide we make in our lungs. So A is really the only one that makes sense.
if this is wrong tell me so I can fix it
hope this helps:)
Chromosomes are called__
pairs because they are the same size and contain the same genes?
Answer:
Homologous chromosomes
Explanation:
Describe how acid rain
falling in a forest could disrupt the
trophic structure of the ecosystem.
Acid deposition can be wet or dry? True or False
Answer:
True
Explanation:
Acid rain is a type of acid deposition, which can appear in many forms. Wet deposition is rain, sleet, snow, or fog that has become more acidic than normal. Dry deposition is another form of acid deposition, and this is when gases and dust particles become acidic.
Which statement best describes evolution in a population? A. It is a change in how common a certain genetic trait of a species is from one generation to the next. B. It is a gene for a trait that helps an individual reproduce more times during its life C. It is a trait that helps an organism survive longer and produce more offspring D. It is a process by which an individual with a helpful trait produces many offspring with the same trait.
Answer:
A
Explanation: Because that means that humans reproduct another human as it keeps going on and some people call the people from our past is ancester but it moveing on to a new genaration of kids and then when they grow up the they make more kids that why it is A
Answer:a
Explanation: