.pls help fast
Is the fossil record complete for humpback whales? Explain your answer.
Answer:
No, the fossil record is not complete because with further fossil discoveries, and more study, it may continue to tell paleontologists how modern whales came to behave the way they do.
Explanation:
90 POINTS SMART PEOPLE OF BRAINLY HELP ME ASAP!! ILLL GIVE THE CROWN THING PLEASE HElP IM BEING TIMED!!
Which is the final electron acceptor in the electron transport chain of cellular respiration?
A.) NADH
B.) FADH2
C.) oxygen
D.) carbon dioxide
Answer:
Option C) Oxygen. Is your correct answer.
Explanation:
Here's a little explanation for you so you can see and read.
Answer and Explanation:
C. Oxygen
Because, the oxygen we inhale is the final electron acceptor in the electron transport chain and allows aerobic respiration to proceed, which is the most efficient pathway for harvesting energy in the form of ATP from food molecules. So, your answer would be C. Oxygen.
Hope you found this helpful! <3
Drag the tiles to the correct boxes to complete the pairs.
Match the phases in the cell cycle to the events that occur in each phase.
interphase
mitosis
cytokinesis
the nucleus divides
the cytoplasm divides
the DNA replicates
Answer:
Interpase: the DNA replicates
Mitosis: the nucleses dishes
Cytokensis: Cytoplasam dishes
Explanation:
PLATO GANG WASSUP
The first phase is interphase, during which the nucleus divides and the DNA replicates. The second phase is mitosis, during which the cytoplasm divides. The third phase is cytokinesis, during which the cell divides into two daughter cells.
What is cell cycle ?The cell cycle is the series of events that take place in a cell leading to its division and duplication. It consists of two major phases: interphase and the mitotic phase. The mitotic phase is further divided into two stages: mitosis and cytokinesis.
During interphase, the DNA of the cell is replicated in preparation for cell division. This phase is divided into three subphases: G1 (Gap 1), S (Synthesis), and G2 (Gap 2).
During G1, the cell grows and prepares for DNA synthesis. During the S phase, the DNA is replicated, resulting in two identical sets of chromosomes. Finally, during G2, the cell prepares for mitosis.
After interphase, the cell enters the mitotic phase. During mitosis, the replicated chromosomes condense and line up at the center of the cell. The nucleus then divides into two identical nuclei, each with a complete set of chromosomes.
After mitosis, cytokinesis occurs, which is the process by which the cytoplasm divides, separating the two daughter cells. The cytoplasmic division usually occurs simultaneously with the telophase stage of mitosis, resulting in the formation of two genetically identical daughter cells.
Therefore, interphase is the phase in which DNA replicates, mitosis is the phase in which the nucleus divides, and cytokinesis is the phase in which the cytoplasm divides to form two genetically identical daughter cells.
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Herman's company has adopted a paperless policy. Employees no longer print letters or documents and instead do everything on the computer. Office paper use has dropped by 40% in the last six months. If everyone adopted the same policies, what impact would that have on the environment?
Answer:
There would be a decrease in deforestation, because fewer trees would be cut down for paper.
Explanation:
If everyone reduce the use of papers it will lead to reduce in deforestation.
What is deforestation?Deforestation refers to the loss of forest area worldwide to other uses such as agricultural land, urbanization and mining activities. Deforestation, greatly accelerated by human activities since the 1960s, has adversely affected natural ecosystems, biodiversity and climate.
Several factors, both human and natural, cause deforestation. Natural factors include natural forest fires and diseases caused by parasites that can lead to deforestation. Nevertheless, human activities are one of the main causes of global deforestation.
Therefore, If everyone reduce the use of papers it will lead to reduce in deforestation.
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What renewable energy source do you think would be best to develop first.
There is no right or wrong answer
In at least 3 sentences, please.
I believe solar power is a renewable energy source that should develop first. This is because as of right now, scientists know that they aren't as efficient as they could be. These panels are currently growing cheaper as production capabilities increases but the panels are going to rarely be able to produce efficiently due to weather conditions. If more money gets added to the research and development of this technology, these panels will become more efficient, thus making more clean energy.
How has the study of genetics shaped our understanding of heredity?
Genetics is the study of how heritable traits are transmitted from parents to offspring. Humans have long observed that traits tend to be similar in families. It wasn't until the mid-nineteenth century that larger implications of genetic inheritance began to be studied scientifically.
what is a root hair cell????
Answer:
Hope the above picture might help you :)
Answer:
A root hair, or absorbent hair, the rhizoid of a vascular plant, is a tubular outgrowth of a trichoblast, a hair-forming cell on the epidermis of a plant root. ... Plants absorb water from the soil by osmosis. Root hair cells are adapted for this by having a large surface area to speed up osmosis.
Explanation:
There is a picture too.
1 pts
Question 9
Which of the following is NOT true of the image shown below?
3 CO,
ADP
O
ZATP
ADP
NADPH
NADP
3 carbon
simple sugar
The process is light dependent
Anaerobic respiration is also known as?
Answer:
Intramolecular respiration
Explanation:
I think sorry if i'm wrong
It is also called as the fermentation. It is the kind of respiration which helps the cells to breakdown energy in the absence of oxygen.
What is the other type of respiration called as ?It is called as the aerobic respiration which takes place in the presence of oxygen.
Anaerobic that stands for without oxygen.This is the method of the cellular respiration where it does not basically require the oxygen in order to generate the energy. For the smaller animals for breathing , here is no enough oxygen present so that they will need energy for surviving in absence of oxygen.
Anaerobic respiration is the process in which the cells just break down into sugars just to produce out energy in the absence of oxygen. The respiration is called as fermentation. it mainly takes place in yeast cells, bacteria, and muscle cells of animals.
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Elements or compounds that can only be separated or combined to make substances with new properties by means of a chemical reaction.
Answer:
substance
Explanation:
hello hope this helps
please answer and give explanation too!
I will mark brainliest and 25 points!!
Explanation:
Conditions needed for germinations are water and oxygen.
Seeds B and C has no water whereas Seed D have no oxygen.
Only Seed A has water and oxygen.
Hence the answer is A.
PLEASE HELP ASAP WILL DO 20 POINTS NOW AND WILL ADD MORE 50 LATER IF THE ANSWER IF WHAT IM LOOKING FOR
EXPERIMENT: TISSUE STRUCTURE
OBJECTIVES
Observe different types of cells.
Use the microscope. These supplies and equipment are needed:
prepared slide of muscle tissue
prepared slide of some internal organ such as the kidney, liver, or heart
prepared slide of erythrocytes, or leukocytes (from blood)
Follow these directions and complete the activities.
1. Place one of the prepared slides of animal tissue on the stage of the microscope.
2. Focus the microscope on low power. Then change to the high power objective. Focus on the tissue, and note the cells.
3. On a separate sheet of paper, draw an individual cell that you see in the tissue. Note the shape of the cell and its other distinctive characteristics.
What do you think the function of this cell might be?
4. Repeat Steps 1 and 2 using the other prepared slides.
5. On a separate sheet of paper, draw individual cells from the other prepared slides examined.
What do you think the functions of the other cells drawn might be?
If all of the different kinds of cells which you observed had been taken from the same organism or individual, would they have all had the same genetic information?
Consider specialization: What biological concept or occurrence is demonstrated by the different kinds of cells which were observed?
Why is it important?
Answer:
Its the flagem
Explanation:
Answer: 434 words total. Left two questions blank (they are underlined) so youll probs need to fill it in. I also suggest putting it into your own words so if they run it through a plagerism checker this doesnt pop up. I hope this helps tho.
Introduction:
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. Cells also contain the body’s hereditary material and can make copies of themselves. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.
Materials:
• Microscope
• Prepared slide of muscle tissue
• Prepared slide of some internal organ such as the kidney, liver, or heart
• Prepared slide of erythrocytes, or leukocytes (from blood)
Instructions:
1. Place one of the prepared slides of animal tissue on the stage of the microscope.
2. Focus the microscope on low power. Then change to the high-power objective. Focus on the tissue, and note the cells.
3. On a separate sheet of paper, draw an individual cell that you see in the tissue. Note the shape of the cell and its other distinctive characteristics.
-What do you think the function of this cell might be?
4. Repeat Steps 1 and 2 using the other prepared slides.
5. On a separate sheet of paper, draw individual cells from the other prepared slides examined.
Questions:
What do you think the functions of the other cells drawn might be?
- (i think this differs on person to person so may need to do it yourself)
If all of the different kinds of cells which you observed had been taken from the same organism or individual, would they have all had the same genetic information?
- Yes, the cells will have the same genetic information. However, the particular combination of genes that are turned on (expressed) or turned off (repressed) dictates cellular morphology (shape) and function. Essentially meaning that though the cells share the same genetic information they do not necessarily share the same functions.
Consider specialization: What biological concept or occurrence is demonstrated by the different kinds of cells which were observed?
- Though these cells have the same DNA, they all have different phenotypes. The phenotypes are different because the cells appear different under the microscope. The cells do this by expressing different genes at different rates. For example, the blood cell is expressing the gene to make hemoglobulin while the other cells are probably expressing different genes that allow them to be specialized. Cells differentiate which means that they are becoming more specialized. Epigenetics focuses on how cells become more specialized.
Why is it important?
- This is important because it allows different parts of the body to carry out their crucial functions necessary for the whole body to run properly.
How can an organism's genetic traits affect its ability to survive?
Which of the following blood cell's function is to carry oxygen?
red blood cells
platelets
B
white blood cells
D plasma
Answer:
the red cells are the ones that carry it
Explanation:
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what would happen if your body failed to return to normal after exercising? explain.
Answer: if your question has to do with homeostasis here you go! i hope this helps:)
In order for a body to work optimally, it must operate in an environment of stability called homeostasis. When the body experiences stress—for example, from exercise or extreme temperatures—it can maintain a stable blood pressure and constant body temperature in part by dialing the heart rate up or down.
The loss of too much blood may lead to circulatory shock, a life-threatening condition in which the circulatory system is unable to maintain blood flow to adequately supply sufficient oxygen and other nutrients to the tissues to maintain cellular metabolism.
Is It possible for two parents with a round jaw to have a child with a square jaw? Why or Why not
Yeah it's possible. Even though both parents have round jaws... that may be the result of a dominant trait overpowering the recessive trait. As long as both parents have the recessive gene (in other words they're heterozygous traits) then there is a possibility for a child to be born with a square jaw.
list out any four waste materials secreted by human body and describe any two of them?
Answer:
These chemical reactions produce waste products such as carbon dioxide, water, salts, urea and uric acid. Accumulation of these wastes beyond a level inside the body is harmful to the body. The excretory organs remove these wastes. This process of removal of metabolic waste from the body is known as excretion.
Answer:
Thechemical reactions produce waste products such as carbon dioxide, water, salts, urea and uric acid. Accumulation of these wastes beyond a level inside the body is harmful to the body. The excretory organs remove these wastes. This process of removal of metabolic waste from the body is known as excretion.
The DNA triplets that code for amino acids are common to—
A) humans only
B) plants and animals
C) Prokaryotes
D) all living things
Answer:
i think itz D.)All living things
Explanation:
Chemical and Waste Management:
Discuss the packaging of regulated waste for transport.
(Dental Assistant Related Chapter 23)
Answer:
los cupoo
Explanation:
kk
1) A region of the country is rapidly growing in population, causing the demand for electricity to go up each year. As a result, a new source of electricity is needed. This particular region of the country has plenty of agriculture, rivers, and access to coal deposits underground. Which of the following would be the cheapest way for this region of the country to make electricity, have minimal impact on the environment, yet not add carbon dioxide to the atmosphere?
Group of answer choices
A)Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity
B)Use the coal deposits to generate electricity in a few coal fired facilities
C)Build a nuclear power plant in the middle of the region
D)Build dams along the rivers to generate electricity
2)The image provided shows a partial river food web.
The local town relies on this river ecosystem to sustain their population both economically and as a source of food. Using the food web provided, which statement provides the best reasoning for regulating the amount of fish removed from the river by humans.
Group of answer choices
A)Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.
B)Regulation will increase the amount of energy transferred from the catfish to the eagle.
C)Regulation will allow contaminated sediments to decrease in the river due the removal of the contamination source.
D)Regulation will ensure that carp will not overpopulate the ecosystem and begin to consume larger organisms like the salmon.
Answer:
The cheapest way for the country to make electricity would be
A) Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity
The statement provides the best reasoning for regulating the amount of fish removed from the river by humans is:
A) Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.
Explanation:
For the electricity, the use of Biomass meets the demands due to the fact that, it has minimal impact on the environment, does not add carbon dioxide to the atmosphere. Also, it is renewable form of energy.
For the regulation of the amount of fish removed from the river helps to maintain the ecosystem balance. If it was not done, the fishes found in the river will be totally harvested thereby disrupting the chains in that river ecosystem.
Photoautotrophs are capable of converting ______ energy into chemical energy.
A.) heat
B.) thermal
C.) light
D.) electrical
help me please!
why do i have sharp chest pain ive had it for 3 days now and now the pain is spreading to my shoulders
Answer:
Um it means your having heart problems
Explanation:
I NEED HELP WITH MY WORK PLZ HELP ME!!!!!! :'(
why are plant cells undergoing cell division do not have a vacuole? Please answer this question within 1-2 hour/s
Answer:
because they can
Explanation:
What is a volcano?
A. a tall mountain
B. a chemical reaction that produces fire
C. an atmospheric condition
D. an opening in Earth’s crust
Answer:
c
Explanation:
Answer:
D
Explanation:
I hope this is correct and have a great day
PLEASE HELP ITS DUE SOON!!! Explain why it is not possible to predict the sex of one individual offspring
What happens to the speed of light as it exits the air and enters a glass of water?
А
It slows down
B
It speeds up
С
It remains constant
D
It first slows down and then speeds up.
Answer:
I believe its D
Explanation:
because why would it slow down or speed up
Why immobilized enzymes are widely used in industry? Explain, please
Answer:
just go with your instincts
pls help, 12 pts and brainliest
Recently, state forests and parks like Yellowstone National Park which contain varieties of flowering trees and shrubs, have started to erect signs that state, Take nothing but pictures, leave nothing but footprints.
Which argument BEST supports why these signs are being placed in state forests and parks?
A
Flowering tree and shrub ecosystems can never fully recover once humans have adversely affected them because organisms in these ecosystems are nonrenewable.
B
Removal of the flowering trees and shrubs will have a direct impact on the ecosystem by increasing the stability.
C
Humans can cause damage to the stability of ecosystems by removing the flowering trees and shrubs.
D
Flowering trees and shrubs make the state forest and parks more attractive and increase the revenue for the parks.
Answer: C.
Explanation:
The signs are placed because humans can cause damage to the stability of ecosystems by removing the flowering trees and shrubs.
Ecosystems are self sustaining units in which there is an exchange of materials and energy within itself. There is need for sustainability in ecosystems to ensure that they continue to survive and ultimately to preserve biodiversity.
The sign; "take nothing but pictures, leave nothing but footprints" placed on state forests and parks like Yellowstone National Park which contain varieties of flowering trees and shrubs are there because humans can cause damage to the stability of ecosystems by removing the flowering trees and shrubs.
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One study factored in fluoride levels in the bone near tumors. If there was a connection between osteosarcomas and fluoride, what would have been the outcome?
Answer:
Fluoride levels in the bone would be higher in individuals with osteosarcomas.
Explanation:
Fluoride levels will be higher in bone of the individuals with osteosarcomas.
What are the uses of fluoride ?Fluoride is a group of compounds which is a combination of fluorine and other elements, these compounds are present in water, plants, rocks, air, and soil.
Some of fluoride compounds are sodium fluoride, stannous fluoride, and fluoride mono-fluorophosphate.
Once fluorides are absorbed inside the body, it travels into the blood through the digestive tract, tend to collect in areas with high calcium like bones and teeth.
Majorly fluorides are used in drinking water, beverages, food, and dental products, mostly fluoro-silicic acid, sodium fluorosilicate, and sodium fluoride forms are added to water.
Some of the fluoridated water used to prevent tooth decay, and avoid dental fluorosis, a cosmetic condition.
Average number of decayed, missing, or filled teeth in children reduced by application of this water and cavities in adults.
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