Answer:
Animal cells have centrosomes and lysosomes
In general, food molecules are ___________ by the digestive tract of organisms so they can be _______________.
Select one:
broken down; absorbed into the bloodstream
broken down; released as heat
combined; absorbed into the bloodstream
converted to energy; used to power the muscles
Answer:
converted to energy ; used to power the musclesMARK ME AS BRAINLISTWhat events occur when the tectonic plates move and grind against each other?
Answer:
Earthquakes
Explanation:
Since the Tectonic Plates slide across each other it cause some to go above and some below which might eventually cause an earthquake.
Hope this Helps!!:)
Which of the following are examples of a physical property of matter?
Iron (Fe) combines with Oxygen (O) to form rust.
the apple is red in color.
Copper (Cu) conducts electricity.
An apple oxidizes (turns brown) once it is cut and exposed to Oxygen (O).
Nickel (Ni) is magnetic.
Magnesium (Mg) combusts when exposed to Oxygen (O).
Water boils at 100ºC.
Answer:
the apple is red
copper conducts electricity
nickel is magnetic
water boils at 100
Explanation: the rest are chemical properties
Which of the following represents a cross between two heterozygous plants?
A. Ww x WW
B. ww x WW
C. Ww x Ww
D. WW x WW
How are viruses, bacteria, and parasites alike?
A. They are non-living and can cause disease.
O
B. They are multi-cellular and can cause disease.
O C. They can infect a host and cause disease.
O
D. They are unicellular and can cause disease.
What are 2 characteristics of index fossils?
To where does carbon dioxide go?
if a microscope has a eyepiece lens with a power of 25X and an objective lens with a power of 50X, what is the microscope's total magnification power?
Answer:
1250
Explanation:
What type of protein is missing in the blue people of KY?
Answer:
four-part protein
Explanation:
The blue people of Troublesome Creek had methemoglobinemia, a metabolic condition affecting hemoglobin, the four-part protein that carries oxygen bound to an iron atom at each subunit's core.
Hope this helps:)
Answer:
The blue people of Troublesome Creek had methemoglobinemia, a metabolic condition affecting hemoglobin, the four-part protein that carries oxygen bound to an iron atom at each subunit's core.
Explanation:
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A large group of seals from Prince Harold Coast Antarctica has emigrated to Oates Coast Antarctica How will this impact the remaining seal population Prince Hard Coast
A The Prince Harold population will decrease
B. The Prince Harold population will increase
C The Prince Harold population will be reduced to zero
DThis will have no impact on the Prince Harold population
Answer:
B
Explanation:
Because now it’s a larger group
as a result of fertilization_____is formed
Answer:
zygote
Explanation:
Fertilization is the process in which haploid gametes fuse to form a diploid cell called a zygote. To ensure that each zygote has the correct number of chromosomes, only one sperm can fuse with one egg.
Do spring tides have the lowest tides
Answer:
No
Explanation:
King tides are the highest tides. ... In the lunar month, the highest tides occur roughly every 14 days, at the new and full moons, when the gravitational pull of the Moon and the Sun are in alignment. These highest tides in the lunar cycle are called spring tides.
A cell is placed in a hypertonic solution. Which will most likely occur as homeostasis is maintained in the cell?
A.
The cell will gain ATP molecules.
B.
The cell will gain water.
C.
The cell will lose water.
D.
The cell will lose sodium ions.
Answer:
B the cell will lose water
Explanation:
Because of the hypertonic solution water will move on the concentration gradient leaving the cell and entering the solution. Thus the cell looses water.
When a cell is placed in a hypertonic solution, it will most likely lose water (Option C) as homeostasis is maintained in the cell.
What is homeostasis?Homeostasis is the ability of an organism or a system to maintain a relatively stable internal environment, despite changes in external conditions. It is a key aspect of biology that helps living organisms survive in their environment. Homeostasis is maintained through a series of physiological processes that regulate different aspects of an organism's biology, such as temperature, fluid balance, and pH
A hypertonic solution is one that has a higher concentration of solutes (e.g. salts) outside the cell compared to inside the cell. This creates an osmotic pressure gradient, which draws water out of the cell and into the solution in an attempt to balance the concentration of solutes on both sides of the cell membrane. As a result, the cell will shrink and lose water.
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Genetics is the study of
A: Cell Division
B: Heredity
C: Body systems
D: Sexual Reproduction
Answer:
B. Heredity
Explanation:
What is the definition for polyploidy?
1 point
Which explanation best identifies the relationship between mitosis and
reproduction? *
Mitosis is a form of sexual reproduction because the daughter cells form from one
single parent cell.
Mitosis is a form of sexual reproduction because the daughter cells are genetically
different from the parent cell.
Mitosis is a form of asexual reproduction because the daughter cells form a new
nuclear membrane after reproduction.
Mitosis is a form of asexual reproduction because the daughter cells are genetically
identical to the parent cell.
During the day when the sun is shining the ground gets warm mainly as a result of
Answer:
The ground becomes warm by the effect of sunlight.
Explanation:
This is because the sun radiates huge amount of heat from its surface. This heat reaches the earth in the form of light energy. This heat is absorbed by the earth's surface and makes it warm.
How does the oyster population
In the Chesapeake Bay ecosystem affect the floating to sea floor ratio of algae
populations
Answer:
Analysis of the data shows that the ratio of floating algae to sea floor algae dramatically increased at the same time that oysters were removed from the Bay. ... (It is also possible to infer from the graph that high floating algae levels led to the decline in oysters.
Answer: Analysis of the data shows that the ratio of floating algae to sea floor algae dramatically increased at the same time that oysters were removed from the Bay. ... (It is also possible to infer from the graph that high floating algae levels led to the decline in oysters.
Plzzz help
Describe the relationship between the sickle cell phenotype and hemoglobin’s structure and function
Answer: Explanation:
Sickle hemoglobin differs from normal hemoglobin by a single amino acid: valine replaces glutamate at position 6 on the surface of the beta chain. Therefore the red blood cell bends differently giving it a sickle shape
Answer:
Explanation:
Sickle cell disease is a group of disorders that affects hemoglobin, the molecule in red blood cells that delivers oxygen to cells throughout the body. People with this disease have atypical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle, or crescent, shape.
Signs and symptoms of sickle cell disease usually begin in early childhood. Characteristic features of this disorder include a low number of red blood cells (anemia), repeated infections, and periodic episodes of pain. The severity of symptoms varies from person to person. Some people have mild symptoms, while others are frequently hospitalized for more serious complications.
The signs and symptoms of sickle cell disease are caused by the sickling of red blood cells. When red blood cells sickle, they break down prematurely, which can lead to anemia. Anemia can cause shortness of breath, fatigue, and delayed growth and development in children. The rapid breakdown of red blood cells may also cause yellowing of the eyes and skin, which are signs of jaundice. Painful episodes can occur when sickled red blood cells, which are stiff and inflexible, get stuck in small blood vessels. These episodes deprive tissues and organs, such as the lungs, kidneys, spleen, and brain, of oxygen-rich blood and can lead to organ damage. A particularly serious complication of sickle cell disease is high blood pressure in the blood vessels that supply the lungs (pulmonary hypertension), which can lead to heart failure. Pulmonary hypertension occurs in about 10 percent of adults with sickle cell disease.
What differentiates Hela cells from other human cells?
Answer:
a normal cell contains 46 chromosomes whereas HeLa cells contain 76 to 80 (ref) total chromosomes, some of which are heavily mutated (22-25), per cell.
Explanation:
The main difference between Hela cells from other human cells is that a normal cell contains 46 chromosomes whereas HeLa cells contain 76 to 80 (ref) total chromosomes, some of which are heavily mutated (22-25), per cell.
What happens when the involvement of hela takes place?The involvement of hela made to the developing field of genetics is a lot was educated about cell reproduction, DNA and mapping genetics. The hela cells prepared them ideal for use in the polio vaccine trials because they were more liable than other cultured cells.
Cancer cells such as Hela cells escape to normal cell cycle by mutations that lead to the misexpression and/or overexpression of regulatory molecules (e.g., cyclins and cyclin-dependent kinases) and faulty checkpoint control of the cell cycle.
The control of the cell cycle depends on 1-cyclins and cyclin-dependent kinases (CDKs) that regulate the cell cycle by a cascade of protein phosphorylations and 2- a group of checkpoint controls that monitor the completion of critical cellular events.
Therefore, The main difference between Hela cells from other human cells is that a normal cell contains 46 chromosomes whereas HeLa cells contain 76 to 80 (ref) total chromosomes, some of which are heavily mutated (22-25), per cell.
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Describe how new hair fibers are formed
Answer:
Taking nutrients from the dermal papilla, the hair bulb generates new hair cells. As these cells move up through the hair root, they mature through a process called keratinization, fill with fibrous protein and lose their nucleus.
Explanation:
I found this on the internet and don't know if it is correct but if it is can I get a brainliest please?
A scientist compares two samples of white powder. One powder was present at the beginning of an experiment. The other powder was present at the end. She wants to determine whether a chemical reaction has occurred. She finds that neither sample bubbles or dissolves in water. She measures the mass and volume of the solids. Sample one has a volume of 45 cm3 and a mass of 0.5 g. Sample two has a volume of 65 cm3 and a mass of 1.3 g. What should the scientist conclude?
A.
The samples have the same color, so no chemical reaction has occurred.
B.
The two samples do not react with water, so no chemical reaction has occurred.
C.
The densities of the samples are different, so a chemical reaction has occurred.
D.
The densities of the samples are the same, so no chemical reaction has occurred.
E.
The densities of the samples are different, so no chemical reaction has occurred.
Answer:
I think it is C because there densities are different.
why is it important that you have white blood cells that perform edocytosis
What are some agents of mutation that can affect the genes of humans? (Choose all that apply)
failure of repair by ligase
codon errors
poor nutrition
ionizing radiation
Answer: The correct answers are "ionizing radiation", "codon errors" and "failure of repair by ligase"
Explanation:
I took the test
Some agents of mutation that can affect the genes of humans are ionizing radiation and codon errors as well as failure of repair by ligase.
What is genetics?Genetics has been known as the study of the heredity as well as the variation of the inherited the characters and the genetic properties and the organism's feature and the characteristics. It has been also known as the branch of biology that has to deal with the study of genetic variation, genes, and the heredity in the organisms.
The main function of the DNA has to carry the information from one generation to the another generation this has been the reason due to which DNA has been also known information molecule.
The main function of mRNA has to work as the immedieter between the protein and DNA which has been utilised by ribosome for the process of direct synthesis of protein, and the function of tRNA has to carry the accurate amino acid to the proteins synthesis site which takes place in ribosome.
Therefore, Some agents of mutation that can affect the genes of humans are ionizing radiation and codon errors as well as failure of repair by ligase.
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Glycolysis requires an input of energy. What molecule provides this energy?
a) glucose
b) ATP
c) NAD+
d) ADP
Answer:
B
Explanation:
Glycolysis requires an input of 2 ATP molecules to produce 4 ATP molecules. It results in a net worth of 2 ATPs.
The option (B) is correct. ATP
What do you mean by ATP?
Adenosine triphosphate (ATP) is the source of energy for use and storage at the cellular level. The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups.
Moreover, adenosine triphosphate is an organic compound that provides energy to drive many processes in living cells, such as muscle contraction, nerve impulse propagation, condensate dissolution, and chemical synthesis.
Therefore, ATP can be used to store energy for future reactions or be withdrawn to pay for reactions when energy is required by the cell. Animals store the energy obtained from the breakdown of food as ATP. Likewise, plants capture and store the energy they derive from light during photosynthesis in ATP molecules.
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Two plants were being tested for growth. Both were given water and proper soil, etc. However, one was placed in the closet, and one was placed in the window sill. Why did the one in the closet die?
Question 4 options:
It did not have chloroplasts.
It was not around other plants.
It did not receive sunlight.
It was not around people enough.
Answer:
It did not receive sunlight.
Explanation:
Plants need sunlight to survive along with water and nutrients from the soil.
Please help ASAP!
How would a cell wall aid a plant during a period of heavy or prolonged rainfall?
Answer:
The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against stress
Explanation:
The cell wall aid a plant during a period of heavy or prolonged rainfall by providing structural support, prevents water damage, regulates water uptake and maintains turgor pressure.
What is a cell wall?Cell wall is the outermost covering of the cell above the plasma membrane, which plays an important role in helping the plant survive during periods of heavy rainfall and prolonged rainfall.
The ways in which it provides protection are:
Structural support- It provides necessary strength and rigidity to the plant, which helps it to stand upright and not collapse under the weight of water.Prevents water damage- It acts as a barrier by preventing water from entering the cells and causing damage to the plant internal structure.Regulates water uptake- It controls the flow of water into the plant, which helps regulate the water uptake and prevent the plant from taking in too much water.Maintains turgor pressure- It also helps to maintain turgor pressure.Hence, the cell wall provides significant support and protection for the plant during periods of heavy and prolonged rainfall.
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Our biggest loser went from 403lbs to 288lbs. He lost a total of 215lbs. Explain what happened to the 215lbs. Be sure to discuss what he did, the process(es) that took place, the type of matter he lost, and the type of matter he lost it as.
Answer:
Explanation:
Weight on a human body is mainly stored as muscle or fat. When we exercise we don't necessarily lose fat. Instead, the fat cells tend to shrink in size but remain the same amount. Fat is converted into energy which the body uses to function. This energy is expelled from the body in many different forms such as carbon dioxide and sweating. Therefore those are the matter that the individual in question lost when losing the 215lbs
mportant vocabulary continued:what is the difference between a unicellular organism and a multicellular organism?
Answer:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. ... Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialized functions.
Explanation:
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Explain the importance/need for homeostasis.
Answer:
look
Explanation:
So ur body can work properly and without it you can die (: Hope I helped im not the best at this.