The process where organisms best fit for the environment are more likely to survive and reproduce.
Answers
Answer: Natural selection
Explanation: Organisms with more advantageous allele are more likely to survive and pass on these alleles to their viable offspring
Related Questions
Why is respiration essential for living things?
Answers
Answer:it is need so the exchange of gases can take place.
Explanation:
which of the following defense systems would be involved in eliminating virally-infected cells? which of the following defense systems would be involved in eliminating virally-infected cells? humoral immunity phagocytosis t lymphocytes complement system
Answers
The defense system involved in eliminating virally infected cells will be T lymphocytes that is option C is correct.
The defense system responsible for protecting the body from various diseases is the Immune system of the body. This system attacks the infections as well as prevent them from affecting the body of the individual. It consists of the two kinds of Lymphocytes namely B lymphocytes and T Lymphocytes. The lymphocytes are the main components protecting the body and they are generated within the bone marrow of the individual. They can work in two ways. They become either B cells and work as the main system by locating all the infections within the body or they become T cells and attack the infection as located by the B cells. The B cells are B lymphocytes and T cells are T lymphocytes.
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__________ stimulates the interstitial cells of the testes to secrete __________.
Answers
Luteinizing hormone promotes the interstitial cells of the testes to perspire testosterone.
What is interstitial cells?In males, testosterone production and secretion are controlled by the interstitial cells of Leydig, which are found in the connective tissue surrounding the sperm-producing tubules of the testes.In response to gonadotrophin-releasing hormone, which is released by the brain and travels through the bloodstream to the gonads, the pituitary gland produces luteinizing hormone, which stimulates the creation and release of testosterone. Male sex hormones are referred to collectively as androgens. The main androgen is testosterone, which is produced by the testes. An interstitial cell is any cell that lives in the spaces between the functioning cells of a tissue.Interstitial cells, which account for more than one-third of all cells in the lung, are found between the vascular endothelium and the alveolar epithelium.
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Pls help due today, would be greatly appreciated
Answers
Answer:
20. Genotypes is all bb, phenotype is all blue.
21. 50% TT 50% Tt genotypes, 100% tall phenotypes
Explanation:
To find the genotypes and phenotypes, we do our punnett sqaure by drawing a square, dividing it into 4 squares, putting our cross in and determining the genotypes of our offspring. Since blue eyes are recessive, they'll be represented by bb. Since tall plants are dominant, they're represented by Tt or TT. Capital letters are dominant while lowercase signifies recessive. Hope it helps :)
can someone answer and explain why?
Answers
Answer:
The answer is A. Container 1.
Explanation:
Based on the data provided, Container 1 is most likely the one in which photosynthesis was not occurring. This is because the amount of CO2 remaining in Container 1 after 2 days was 100 cubic centimeters, which is the highest amount of CO2 remaining among all four containers. This suggests that the plants in Container 1 did not use as much CO2 for photosynthesis as the plants in the other containers, indicating that photosynthesis was likely not occurring at the same rate as in the other containers. The other containers all had less CO2 remaining, suggesting that photosynthesis was occurring more efficiently in those containers.
Why is it A? Container 1 is where the plant probably didn't do photosynthesis because it had the most CO2 left after 2 days, while the other containers had less CO2 left. This means that the plant in Container 1 did not use as much CO2 for photosynthesis as the plants in the other containers, suggesting that photosynthesis was not occurring at the same rate as in the other containers.
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what chemical elements are considered the building blocks of life? astrobiologists have been searching for signs of life on mars by looking for chemical substances such as carbon, water, nitrogen, phosphorous, and other building blocks of life.
Answers
With a single rover bigger than both the Viking landers transferred to Mars in the 1970s, Mars Science Laboratory looks for chemical rudiments that are the structure blocks of life.
These structure blocks include six rudiments necessary to all life on Earth: carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulphur. Life requires small quantities of other rudiments, similar as iron, along with sources of energy. On Earth, this energy comes from the sun or from electrons moving back and forth between rudiments and composites in nature. Life also requires a stable enough terrain to get a base without being cancelled by natural hazards similar to stormy explosions or inordinate ultraviolet radiation. The Mars Science Laboratory is studying carbon and water cycles on the earth through its history. That is, it seeks to determine in what form quantum carbon and water is stored on the earth or in its atmosphere and how that may have changed through time.
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Place the events in the transmission of an action potential in the correct order. 1. An action potential begins in the receiving neuron. 2. Neurotransmitters are released into the synaptic cleft. 3. An action potential arrives at an axon terminal. 4. Calcium ions enter the axon terminal. 5. Sodium ions diffuse into the receiving neuron. 6. Synaptic vesicles fuse with the plasma membrane. 7. Neurotransmitter molecules bind to the membrane of the receiving neuron.
A. 1,2,6,7,4,3,5
B. 3,5,6,2,7,4,1
C. 3,4,6,2,7,5,1
D. 2,3,6,7,4,5,1
E. 7,6,5,3,4,2,1
Answers
Answer:
c
Explanation:
Which type of biological molecules often serve as enzymes that speed up chemical reactions?
O nucleic acids
O carbohydrates
O proteins
O lipids
Answers
Answer:
C. Proteins
I believe
Which of the following is not a major component of blood in humans? AEpithelial cells BRed blood cells CWhite blood cells DPlasma EPlatelets
Answers
Answer:
A - Epithelial cells
Explanation:
Epithelial cells are cells that come from surfaces of your body, such as your skin, blood vessels, urinary tract, or organs. They serve as a barrier between the inside and outside of your body, and protect it from viruses. A small number of epithelial cells in your urine is normal.
Cells make up all living things. If something has cells, it's a living thing. If something does not have cells, it is not a living things.
We will also look at some key parts inside of cells allow them to function.
Finally, we will explore some easy differences between animal and plant cells. im stuck on thissss
Answers
Answer:
cell walls and chlorophyll
Explanation:
they are the key difference between the two types of cells .plant cells have chlorophyll and cell walls while animal cells only have a cell membrane
6. Two functions of bones are to protect body structures and to
A) serve as storage sites for glycogen B) synthesize the vitamins needed for clotting
C) provide sites for ATP production D) act as levers during body movements
Answers
Answer:
D) act as levers during body movements
Explanation:
Which of the following properties of energy has allowed humans to use the many types of fuels? energy’s ability to convert from one form to another, energy’s ability to transfer from one object to another, having energy in organisms for reproduction, growth, and metabolism, or having energy in plants for photosynthesis and animals for respiration
Answers
The property of energy that has allowed humans to use the many types of fuels is energy's ability to convert from one form to another.
- Energy's ability to convert from one form to another is the property that has enabled humans to utilize various types of fuels.
- This conversion of energy allows for the transformation of one form of energy into another usable form.
- For example, fossil fuels such as coal, oil, and natural gas contain stored energy from ancient organic matter.
- Humans have developed technologies like combustion engines and power plants to convert the chemical energy stored in these fuels into useful forms such as mechanical energy or electricity.
- Similarly, renewable energy sources like solar, wind, and hydroelectric power harness natural processes and convert them into usable forms of energy.
- Energy's ability to transfer from one object to another is important for the distribution and utilization of energy.
- This transfer enables the transportation of fuels and the transmission of electricity over long distances.
- Having energy in organisms for reproduction, growth, and metabolism is crucial for sustaining life but is not directly related to the utilization of different types of fuels by humans.
- Likewise, the presence of energy in plants for photosynthesis and animals for respiration is important for biological processes but not specifically for the use of various fuel sources by humans.
- Overall, it is energy's ability to convert from one form to another that has allowed humans to tap into the diverse range of fuel resources available for meeting their energy needs.
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What is the name of the glucose transporters found on skeletal muscle and fat cells?
Answers
GLUT is the name of the glucose transporters found on skeletal muscle and fat cells.
The glucose transporters GLUT1 and GLUT4 transfer glucose into skeletal muscle. The fetal muscle/neuronal type transporter GLUT3 is also expressed by cultured muscle cells. A family of glucose transporter proteins with 12 transmembrane domains includes GLUT4. Primarily found in skeletal muscle and adipose tissue, it is expressed. The response of GLUT4 to insulin signaling and membrane trafficking is mediated by distinct N- and COOH-terminal regions.Major glucose transporters include GLUT1 in the brain, placenta, and erythrocytes, GLUT2 in the pancreas, liver, and kidneys, GLUT3 in neurons and the placenta, and GLUT4 in skeletal muscle, the heart, and adipose tissue.learn more about glucose transporters here: https://brainly.com/question/25184003
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what substances are returned to the blood before it leaves the kidneys?
Answers
Answer:
The process is called reabsorption.
The substances that are returned are glucose, amino acids, water and salt. Hope this helped
Determine if the statement is true or false. If false, replace the word(s) in bold with the correct word(s) on the line. If true, write "true" on the line.
___________ Bacteria are multiple-celled microscopic organisms.
___________ Bacteria are the most abundant form of life on Earth.
___________ Your digestive tract is home to billions of bacteria.
___________ Vitamins are a type of medication used to kill bacteria.
___________ Common bacterial shapes are rods, spheres, and cones.
___________ Cilia or legs are used for locomotion in some bacteria.
___________ In general, bacteria consist of a nucleus, ribosomes, and a cell wall.
___________ Some types of bacteria can make their own energy through photosynthesis.
___________ Fusion is a form of asexual reproduction where two identical cells are formed from one parent cell.
___________ Some bacteria can exchange genetic material with each other using a thin tube that connects them.
___________ Bacteria can multiply and grow larger quickly.
Scientists think that bacteria evolved around 3.5 billion years ago.
Answers
Answer:
False Bacteria are multiple-celled microscopic organisms. True Bacteria are the most abundant form of life on Earth. True Your digestive tract is home to billions of bacteria. False Vitamins are a type of medication used to kill bacteria. True Common bacterial shapes are rods, spheres, and cones. False Cilia or legs are used for locomotion in some bacteria. False In general, bacteria consist of a nucleus, ribosomes, and cell wall. True Some types of bacteria can make their own energy through photosynthesis.False Fusion is a form of asexual reproduction where two identical cells are formed from one parent cell. True Some bacteria can exchange genetic material with each other using a thin tube that connects them.True Bacteria can multiply and grow larger quickly. True Scientists think that bacteria evolved around 3.5 billion years ago.
Explanation:
The fundamental microscopic components of all species are cells. Two groups of cells, Prokaryotes and Eukaryotes, exist. Prokaryotic (meaning pro: before and Karyon: for kernel/nut) identifies species that do not have membranes surrounded by a cell nucleus or other organelles.
Bacteria, thought to have evolved 3.5 billion years ago are types of prokaryotes and are the oldest forms of life on earth. As single- celled life forms, they take on various shapes (rods, cones, spheres, spirals) and are capable of reproduction through asexual binary fission, and exchange genes in horizontal gene transfer (conjugation, transduction etc) and cell fusion .
They live in communities and, grow exponentially in number over short periods of time. Some are autotrophs, capable of producing their own food through photosynthesis. Some species can move around using flagella, long whip-like projections from the cell.
In humans, bacteria have colonized the intestinal tract. While some are beneficial as part of the microbiome, others are disease-causing pathogens- these are typically eliminated via the use of antibiotics.
The statements can be True or False as:
1. The given statement is False. Bacteria are single-celled or unicellular prokaryotic organisms.
2. The given statement is true. Bacteria are the most abundant forms of life on earth, such that they are found in extreme temperatures.
3. The given statement is True. The digestive tract is composed of billions of bacteria, which help in the breakdown of molecules.
4. The given statement is False. The vitamins are nutritive substances, which can cause deficiency diseases.
5. The given statement is True. The bacteria exist in different forms and shapes, such as rods, cones, and spherical.
6. The given statement is False. Flagella are the filamentous structures used for locomotion.
7. The given statement is False. The bacteria are prokaryotes and lack membrane-bound organelles like the nucleus, ribosomes, and mitochondria.
8. The given statement is True. The bacteria such as cyanobacteria perform photosynthesis.
9. The given statement is False. The bacteria reproduced through binary fission or conjugation.
10. The given statement is True. Conjugation or transduction is a process through which bacteria exchange genes.
11. The given statement is True. The bacteria grow exponentially and multiply at a very fast rate.
12. The given statement is True. The origin of bacteria dates back to 3.5 million years ago.
Thus, the bacteria are prokaryotic organisms, which are found at extreme temperatures and undergo asexual reproduction.
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The last common ancestor of gymnosperms and angiosperms possessed which of these characteristics? select all that apply.
Answers
The last common ancestor of gymnosperms and angiosperms possessed the same characters such as pollen, seeds, and vascular tissue.
What are angiosperms and gymnosperms?The gymnosperms are a group of plant that are known as seed- producing plants such as Ginkgo, gnetophytes, cycads etc.
Angiosperms are the plant that produces flowers and having seeds enclosed within their fruit.
Gymnosperms have no production of flowers and fruits and they contain seeds without cover on the surface of their leaves.
Therefore,last common ancestor of gymnosperms and angiosperms possessed the same characters such as pollen, seeds, and vascular tissue.
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Unit 10: Career Exploration
This activity will help you meet these educational goals:
● Content Knowledge—You will learn about the responsibilities of different types of
Biologists.
● Inquiry—You will conduct online research in which you will collect information, make
observations, and communicate your results in written form.
● 21st Century Skills—You will employ online tools for research and analysis, use critical
thinking, and communicate effectively.
Introduction
Biologists have different responsibilities based on their career choice or specialty. You have to
understand the opportunities available to you should pursue a career in this field.
__________________________________________________________________________
Directions
Task 1: Biologist Responsibilities
Research one or more of the following biology-related job fields: Field Biologist, Senior Biologist,
Conservation Biologist, Conservation Scientist, or Evolutionary Ecologist. Find a sample resume
within that field and identify some key skill sets that resume has. Are these skills that you feel you
already possess? Or would you need to grow some of these skills? Be sure to upload the sample
resume to the dropbox.
Type your response here:
Answers
There are many different job paths you might choose with this degree, but biology is a prerequisite for careers in the science and health sectors.
What is career in Biology?Relevant experience demonstrates your dedication to the field and helps you gain practical skills in a competitive employment market. It also gives you the chance to network with other professionals.
Profession experience might provide you a helpful understanding of the work if you're undecided of the area of biology you want to pursue.
You can qualify for a scholarship or bursary to help pay for your year-long industrial placement if your biology degree program includes one.
Therefore, There are many different job paths you might choose with this degree, but biology is a prerequisite for careers in the science and health sectors.
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Bears typically eat a mixture of plants and animal food sources. When a bear is unable to find meat, it will have a much lower fat intake, which will limit its supply of what?
Answers
The sciatic nerve divides into the tibial and common fibular nerve. Which nerve is more lateral?.
Answers
The tibial nerve will be more lateral.
The tibial nerve travels from its point of origin through the popliteal fossa and lateral towards the popliteal vessels. The nerve crosses deep to the leaders of the calf muscles as it reaches the distal side of the popliteal fossa, becoming intermediate to the popliteal arteries.
The sciatic nerve's tibial segment gives rise to the lower lumbosacral plexus, which in turn gives rise to the tibial nerve. Most of the fibers are from the L5-S3 roots. The tibial nerve runs in between two components of the hamstring muscle after passing through the popliteal fossa.
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Identify which of the following will easily pass through the membrane? A.) Protein Hormone B.) Steroid Hormone C.) Charged Ion D.) Water
Answers
Answer:
Hope this helps a bit, sorry if it doesn't. Have a good day/night! :}
Explanation:
Steroid Hormone: It is thought that, because of their lipophilic nature, free steroid hormones enter target cells primarily by passive diffusion through the cell membrane. After gaining entry to the cell, steroid hormones act as ligands for nuclear receptors and alter gene transcription
Protein Hormone: Small uncharged molecules can diffuse freely through a phospholipid bilayer. However, the bilayer is impermeable to larger polar molecules (such as glucose and amino acids) and to ions. These molecules pass across membranes via the action of specific transmembrane proteins, which act as transporters.
Water/Ion: Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more slowly. On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids.
A substance that will easily pass through the membrane is: B. steroid hormone.
What is a membrane?A membrane can be defined as the thin layer that separates the ineterior of a living cell from another, especially by forming its outer boundary or layers.
This ultimaetly implies that, a membrane provides protection for a living cell or an internal cell compartment from its environment.
In conclusion, a steroid hormone is a substance that will easily pass through the membrane.
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Which part of the cell theory most aligns with the process of Mitosis?
Answers
Answer:
cell division
cell division
if the energy of the sun no longer reached Earth, the primary productivity of which of the following ecosystems would be least affected?
A. deep sea hydrothermal vent
B. temperate rain forest C. desert
D. taiga
E. coral reef
Answers
The primary productivity of deep sea hydrothermal vent ecosystems would be least affected if the energy from the sun no longer reached Earth. The correct option is A.
Deep sea hydrothermal vent ecosystems are unique and distinct from other ecosystems because they derive their primary productivity from chemosynthesis rather than photosynthesis. Unlike other ecosystems that rely on sunlight for energy, deep sea hydrothermal vent ecosystems depend on chemical energy derived from the minerals and compounds present in the hydrothermal vents.
At these vents, hot water rich in minerals and gases is released into the deep sea from the Earth's crust. Microorganisms known as chemosynthetic bacteria utilize these minerals and gases to produce organic matter through chemosynthesis, which forms the basis of the food web in this ecosystem.
Since deep sea hydrothermal vent ecosystems do not rely on sunlight, the absence of solar energy would not significantly impact their primary productivity. They can sustain life and support diverse organisms even in the absence of sunlight, making them less affected compared to ecosystems that heavily rely on photosynthesis-driven primary production. The correct option is A.
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Which cell structure is found in plant and animal cell and controls what can come into or leave a cell
Answers
Answer:
Cell Membrane
Explanation:
The diagram below represents structures and processes involved in protein synthesis in an animal cell Four parts of the
diagram are labeled W X Y and Z
Which part of the diagram represents transcription?
Answers
Answer:
it is going to be b.
Explanation:
Because the diagram is showing its relationship between them.
The part of the diagram that represents transcription is X.
Transcription simply means the process where the information that's in a strand of DNA is copied into a new molecule of messenger.
It should be noted that transcription takes place in a nucleus. The diagram depicted represents structures and processes involved in protein synthesis in an animal cell. The part of the diagram that represents transcription is X.
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Geotropism is another word for
Select one:
O geology
Ogravitropism
Ophototropism
Answers
Answer:
Gravitropism
Step-by-step explanation
The growth of certain parts of plants that are respected by the force of gravity
How do humans use artificial selection to produce organisms with desired traits?
Plz help!
Answers
Answer:
human used artificial selection to develop new organisms with desirable characteristics. Breeders select two parents that have beneficial phenotypic traits to reproduce, yielding offspring with those desired traits
why is energy from the sun stored in the chemical bonds of glucose
Answers
when a blood vessel is injured, it releases chemicals that activate platelets and cause them to stick to the injury site. the activated platelets in turn release more chemicals and attract more platelets to the injury site until the wound is fully sealed. this process of blood clotting is an example of
Answers
Blood clotting typically takes place when a blood vessel is injured. Immediately after being sliced, platelets start to attach to the vessel's edges and release chemicals that draw in additional platelets.
The outward bleeding ceases when a platelet block forms. Their main job is to control and halt bleeding. The body signals platelets to move to the injured location when a blood vessel is damaged, causing them to do so. Upon reaching the wound, the platelets congregate to form a clot that aids in stopping the bleeding. Blood cells and plasma leak into the tissue around a blood vessel that has been injured. Platelets adhere to the cut's edges right away and exude substances that draw other platelets to the area.
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Match each term with its definition Terms 1. Law of conservation of energy 2. Law of conservation of mass 3. Raymond Lindeman 4. Trophic level Definitionsa. energy cannot be created nor destroyedb. a biologist who studied ecosystem ecologyc. matter cannot be created nor destroyedd. a position in a food chain, a food web, or an ecological pyramid that is occupied by a group of organisms
Answers
1. The law of conservation of energy states that energy cannot be created nor destroyed. Therefore, the correct answer is A.
2. The law of conservation of mass states that matter cannot be created nor destroyed. Therefore, the correct answer is C.
3. Raymond Lindeman is consideres the founder of ecosystem ecology. Therefore, the correct answer is B.
4. Trophic level is a position in a food chain, a food web, or an ecological pyramid that is occupied by a group of organisms. Therefore, the correct answer is D.
when do spindle fibers attach to chromosomes during mitosis?
after chromosomes split into chromatids
before chromosomes have condensed
after chromosomes line up at the cell's equator
when chromosomes are being copied
Answers
During the Metaphase stage, after the chromosomes line up at the cell's equator the spindle fibers attach to the chromosomes during the mitosis of cell. Thus, the correct option is C.
What are Spindle fibers?Spindle fibers form a protein structure which results in division of the genetic material in a cell. The spindle fiber is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both the types of nuclear division: mitosis as well as meiosis.
Spindle fibers are first visible during the prophase of cell division. It is the first stage of mitosis. During this phase, chromosomes condense and become visible and the spindle fibers emerge from centrosomes. During metaphase stage, the spindle fibers attach to the centromere of each pair of sister chromatids. The sister chromatids line up at the equator (meta-plate), or the center of the cell.
Therefore, the correct option is C.
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