Answer:
How does a change in food resources model the type of beaks in birds?
Explanation:
We know that phenotype results from the interaction of the genotype and the environment. Any change in the environment produces a change in the phenotype of the animals. By performing this experiment, we probably want to know the influence of the environment on animals. In this particular example, we change a source of food by removing fruit (which would be acting as the independent variable of the experiment) and evaluate its effects on the birds´ beak (the dependent variable). Which of the three different beaks increases their frequencies by removing the fruit, and which one decreases its frequency.
So here, the absence of fruit is acting as a selective ecological pressure on birds. It is modeling birds´ beaks and adapting animals to feed on some other resource.
Change in food resources ---> Selective ecological pressure.Change in beaks frequency----> Adaptative response.13. How does the protein p53 act as a negative regulator?
Answer:
The major negative regulator of p53 is the Mdm2 proto-oncogene. Mdm2 is transcriptionally induced by p53, thus p53 triggers its own destruction through a negative feedback loop. This feedback loop leads to oscillations in the expression of both proteins following DNA damage.
Explanation:
True or False: Evolution can occur at the organismal level.
How do mammals conserve their heat?
Answer:
with hair or fur
Explanation:
All mammals are endothermic. They conserve body heat through their hair and fur.
What are endothermic animals?Those animals that can regulate their body temperature are known as endothermic or warm-blooded animals. They can survive even when the temperature fluctuates during seasonal changes. They can live in various climates.
When the body temperature of a mammal increases too high then this condition is called hyperthermia, and body temperature reduces too low, then it is called hypothermia.
Hypothalamus is a part of the brain that maintains the temperature of the body, it is responsible for heat production and heat loss. In mammals, heat generates during cellular metabolism. This process is called thermoregulation.
Hence, this is how mammals conserve their body heat.
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1. Which cell has a cell membrane
(1 Point)
O plant
O animal
O both
2. Cell Wall
(1 Point)
O Plant
O Animal
O Both
3. Chloroplast
(1 Point)
O plant
O animal
O both
4. Cytoplasm
(1 Point)
O Plant
O Animal
O Both
Answer:
1. both
2. plant
3. plant
4. both
What are 5 disadvantages of solar power ?
Answer:
Location & Sunlight Availability. ...
Installation Area. ...
Reliability. ...
Inefficiency. ...
Pollution & Environmental Impact. ...
Expensive Energy Storage. ...
High Initial Cost.
Explanation:
Explanation:
first
it is weather dependent
second
it takes a lot of space
third
it is expensive
forth
it associates with pollution
fifth
it is damaged by rain and ultraviolet radiation
What does a plant need to take in to perform photosynthesis?
Answer:
A plant needs carbon dioxide and water in order to perform photosynthesis. Also, it needs sunlight to make its food.
Hope this helps!
Do secondary consumers eat seed but not leaves. true or false
Answer: Secondary consumers mainly eat primary consumers and can be either carnivores or omnivores. This means that they can eat both seed AND leaves. This leading to be false.
Explanation:
Why is it important for there to be different species in an ecosystem? What would happen if all the species were the same? Explain why biodiversity matters.
Answer: Biodiversity is the variety of life, which is responsible for ensuring the balance of ecosystems around the world. It provides necessary goods such as food or oxygen, it provides raw materials that favor economic development, it produces energy that we use as fuel, and it is the origin of some medicines. If all animals in an ecosystem were of the same species, the balance would be lost.
Explanation:
An ecosystem is a set of living beings (of different species) that share the same habitat or biotope. There are first of all primary producers, those that are capable of producing organic matter from inorganic compounds. These organisms are autotrophs, such as plants. Then we find in the second step the consumers, heterotrophic organisms (herbivores, carnivores or omnivores) that feed on matter and energy produced by other living beings. And in the last link of the trophic chain of organisms that make up an ecosystem we find the decomposers, those that feed on dead organic matter. In this way, there are complex interactions between different organisms of different species.
Thus, biodiversity is the variety of life, which is responsible for ensuring the balance of ecosystems around the world. It provides necessary goods such as food or oxygen, it provides raw materials that favor economic development, it produces energy that we use as fuel, and it is the origin of some medicines.
If all animals in an ecosystem were of the same species, the balance described above would be lost. If they were all producers like plants, there would be no consumers to control the plant population. If they were all consumers, they would eventually run out of food. And if they were all decomposers, they would not have enough dead organic matter to feed on either. A greater number of species or biological diversity in an ecosystem makes it more resilient. Because species can absorb and reduce the effects of environmental changes on the overall structure of the ecosystem. In addition, they can reduce the chances of a change to a different state.
what does hertzsprung-russell diagram display?
A.the distance between Earth and other stars.
B.who discovered each star.
C.temperature and luminosity of may stars
PLEASE HELP!! Much appreciated!
Answer:
The Hertzsprung-Russell Diagram is a graphical tool that astronomers use to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage. Stars in the stable phase of hydrogen burning lie along the Main Sequence according to their mass.
Explanation:
PLEASE ANSWER QUICKLY
After Dante catches the flu virus, he feels very tired and loses his appetite. His body aches and he gets a high fever.
Which best describes Dante's symptoms?
they are a response to an infection, which is an internal stimulus
they are a response to being tired, which is an external stimulus
they are a response to hunger, which is an internal stimulus
they are a response to an illness, which is an external stimulus
Answer:
They are a response to an illness
Answer:
a
Explanation:
What is cancer and why does it happen?
Answer:
Cancer is the uncontrolled growth of abnormal cells in the body. Cancer develops when the body's normal control mechanism stops working.
The pigment molecules (chlorophyll) responsible for photosynthesis are located in the:
A) Mitochondrion
B) Cytoplasm of the cell
C) Stomata
D) Chloroplast
What is the difference between the digestive system and the immune system ?
PLEASE HELP!!!
Answer:
Your digestive tract has an important relationship with your immune system, since the digestive tract is one of the mechanisms through which you're exposed to tremendous numbers of pathogenic organisms each day. The immune system works with the digestive tract to help protect you from infection by these potential invaders.
Explanation:
Hope this helps.
. Landfill are is a/an: (a) open area (b) high lying open area (c) open area near a river/lake (d) low lying open area
Answer:
d
Explanation:
Landfills are low-lying open areas specifically designed for the dumping of waste materials to be buried later.
Landfills can be for municipal/household wastes, industrial wastes, or for hazardous wastes. They are usually low lying to facilitate their burial after they must have been filled-up and they represent one of the oldest methods of disposing wastes.
Landfills are not just open areas, they are low-lying as opposed to high-lying, and they are not created near rivers or lakes.
The correct option is, therefore, d.
Write a 2 sentence summary about cellular respiration.
Answer:
I looked it up and this what it said
Explanation:
"Cellular respiration is the process in which cells break down glucose, release the stored energy, and use it to make ATP. The process begins in the cytoplasm and is completed in a mitochondrion. Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport."
Cellular respiration can be summarized as:
What is cellular respiration?Cellular respiration is the mechanism by which living cells break down glucose molecules and release energy in the form of ATP molecules.
Energy coupling can be seen in cellular respiration.
Glucose is broken down in an exothermic reaction and the energy released powers the endothermic reaction of ATP generation.
Glycolysis, the TCA cycle, and the electron transport chain are the three steps of cellular respiration.
From one molecule of glucose, 38 molecules of ATP are created in all three stages of cellular respiration.
(Glucose) C6H12O6 + 6O2 → 6CO2 + 6H2O Chemical Energy (in ATP)
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Hormone that increases the size of the Graafian follice
Please help me and no file
Explain IN YOUR OWN WORDS why cancer drugs "turn a cancer's weakness against itself."
Answer:
There are several possible reasons for chemotherapy resistance: Some of the cells that are not killed by the chemotherapy mutate (change) and become resistant to the drug. Once they multiply, there may be more resistant cells than cells that are sensitive to the chemotherapy. Gene amplification.
(iii) Humans have four types of teeth. State which type of tooth is mainly responsible for the digestion named in (a) (ii) above.
Answer:
als you hage to do is ask internet it eill tell u
6.) the process by which large molecules are expelled from a cell
Answer:
A cell uses a process called exocytosis to expel large molecules. The process is shown on the right. Note how the contents are packaged in a membrane bound vesicle which fuses with the cell membrane to expel its contents.
Answer:
A cell uses a process called exocytosis to expel large molecules
Explanation:
The parts of the brain that control breathing are the
O A. spinal cord and cerebellum
O
B. medulla oblongata and pons
C. cerebrum and cerebellum
OD. cerebrum and pituitary gland
A community is composed of
(1) organisms of the same species in an area
(2) an organism's food supply in an area
(3) all of the different organisms living in. an area
(4) the living and nonliving components in an area
which cell that was viewed is most likely a prokaryote?
Answer:
Option C, Cell Y
Explanation:
Prokaryotic cells are the most primitive type of organism that do not possess a true nucleus in them. They do not even have true membrane-bound organelles.
The prokaryotes have a plasma membrane as their protective covering which helps them to survive in extreme conditions.
They also possess a rigid cell wall which also provides them protection and rigidity. Example: Archaea and bacteria.
I hope that this helped you
Answer: ITS CELL X cell x cell x
Explanation:
because I’m not a capper
Plants that live just one year are known as
Deer eat grass, leaves, and acorns. They are eaten by wolves and coyotes. Deer
are
A. primary producers
B. secondary producers
C. primary consumers
D. secondary consumers
Answer:
Primary consumers
Explanation:
Producers create their own food/energy source. Example: grass
Primary consumers eat producers. Example: rabbits
Secondary consumers eat primary consumers. Example: snakes
BIO HELP
right answer gets brainliest
Which statement best describes what is happening in the cell above?
The cell is in anaphase because the sister chromatids have separated.
The cell is in prophase because the sister chromatids have condensed.
The cell is in telophase because the chromosomes are still paired.
The cell is in metaphase because the chromosomes have replicated.
Based on the stages of cell division, the picture depicts the process of anaphase because the sister chromatids have separated
What is cell division?Cell division on is the process by which cells divide to produce new daughter cells.
The process of cell division is of two types known as mitosis and meiosis.
Cell division occurs in four stages:
anaphaseprophase telophase and metaphaseIn anaphase, the sister chromatids separates.
Therefore, the picture depicts the process of anaphase because the sister chromatids have separated
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Which of the following are forms of money? Select all that apply.
A. loans
B. goods
C. credit cards
D. banks
E. debit cards
F. checks
G. cash
If we have a vegetarian person who needs 2,000 calories a day, how many calories must the plants they eat produce?
Select one:
2,200 calories
200,000 calories
2,000 calories
20,000 calories
Answer:
as a vegetarian im confused, wouldnt it be 2,000
Explanation:
Why are saber teeth analogous structures?
Answer:
Analogous structures are structures that are similar between animals but different due to years of evolution. Like bug wings and bird wings. Saber teeth are like this with lion teeth, elephant tusks, etc
Explanation:
Thylacosmilus, a marsupial has saber teeth. Smildon which is a mammal also has saber teeth. But they do not have any common ancestor. So saber teeth do not have similar origins but have the same function and are analogous structures.
What is meant by analogous structures?The features that are similar in function but do not necessarily have structural similarity are referred to as analogous structures. They are not derived from common ancestors. The homologous structures on the other hand have similar origins and have similar functions.
The canine teeth in mammals are called saber teeth. They are found on either side of the incisors and are present in both the top and bottom of the mouth. These teeth are used by mammals to tear the food apart. They are the most pointed of all the teeth.
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● Describe the steps of bacterial infection.
o You must include answers to the following questions in your response.
▪ Can bacteria affect any cell? How does it target?
▪ What causes the damage to your tissues?
Answer:VBacteria are living things that have only one cell. Under a microscope, they look like balls, rods, or spirals. They are so small that a line of 1,000 could fit across a pencil eraser. Most bacteria won't hurt you - less than 1 percent of the different types make people sick. Many are helpful. Some bacteria help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese.
But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.
Antibiotics are the usual treatment. When you take antibiotics, follow the directions carefully. Each time you take antibiotics, you increase the chances that bacteria in your body will learn to resist them causing antibiotic resistance. Later, you could get or spread an infection that those antibiotics cannot cure.
The tree population on Galveston Island has become more diverse due to human impact and planting non-native trees. During times of hurricane flooding, native trees that are more tolerant to salt water are surviving while non-native trees that are less salt tolerant are dying off. Which of the following explains how the tree population will continue to change overtime?
The salt tolerant tree population will decrease overtime due to increased flooding
The salt tolerant native tree population will continue to increase due to their adaptation
The non-native tree population will increase slowly overtime due to more hurricane occurrences
The non-native tree population will increase due to their adaptation
Answer:B
Explanation: