Oxygen is taken into cells by the process of simple DIFFUSION.
Simple diffusion is a cellular process by which small molecules (e.g., oxygen and carbon dioxide) pass across the plasma membrane and thus can enter and leave the cell.Simple diffusion always occurs in favor of a concentration gradient, i.e., from a region of high concentration to a region of low concentration.For example, oxygen (O2) molecules move from a region of high concentration in the lungs to a region of low concentration in the blood.This process (diffusion) does not require energy to move molecules across biological membranes.In conclusion, oxygen is taken into cells by the process of simple DIFFUSION.
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How many strands of mRNA are transcribed from the two “unzipped” strands of DNA?
Answer:
Since DNA is double-stranded, two different RNA molecules could in principle be transcribed from any gene, using each of the two DNA strands as a template.
Explanation:
During transcription, the DNA of a gene serves as a template for complementary base-pairing, and an enzyme called RNA polymerase II catalyzes the formation of a pre-mRNA molecule, which is then processed to form mature mRNA
Which motion allows an observer on Earth to view
different constellations throughout the year?
A Earth orbiting the Sun
В. constellations orbiting Earth
C.Earth orbiting the constellations
D. constellations orbiting the Sun
Answer:
it’s A
Explanation:
Motion is defined as the change in the position of an object with respect to time. The motion can be uniform, non-uniform, retrograde, and circular.
The correct answer is:
Option A. Earth orbiting the Sun
The Earth is a celestial object that rotates and revolves around the Sun in a fixed orbit.
Also, the planets and other constellations in space revolve around the sun.
The retrograde motion is a type of illusion motion in which a viewer on the moving planet Earth observes the constellation, which is also revolving around the sun.
The retrograde motion occurs when the object moves in an opposite direction, such that Earth moves west to east, and the constellation moves east to west.
Therefore, option A is correct.
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21. Which factor is least likely to influence the rate of enzyme
activity? (B.9C) *
O A. The pH at the reaction site
B. The number of Golgi complexes near the reaction site
O C. The concentration of substrate and/or enzyme at the reaction site
O D. The temperature at the reaction site
Answer:
,gk
Explanation:hh
A scientist should be creative in order to?
Answer:
Scientists use creativity to determine which smaller questions are likely to yield results, imagine possible answers to their questions, and devise ways to test those answers.
Explanation:
Answer:
Find out new things.
Explanation:
If every scientist that ever existed wasn't a little creative, then how would they figure out so many cool new things.
How do we as humans reduce biodiversity AND in your opinion, why is it a big deal that we are? PLS HELP FOR A TEST
Answer:
We reduce Biodiversity (in animals) because we hunt them, and we hunt some more then others.
Explanation:
In my opinion, Its a big deal because animals impact is all. For example, if theres too many cows then there will be too little of grass, but if theres not enough cows then there'll be too much grass. If we take away all of the animals, then we will all starve, like how if we kill all the bees, there'll be no more plants. I hope this helps!
the starting molecule for glycolysis is
Answer:
The starting molecule for glycolysis is glucose.
Explanation:
I think this picture might show why ⬇︎
The starting molecule for glycolysis is glucose.
In the end, glucose is split into two pyruvate molecules through glycolysis. Glycolysis can be thought of as having two phases that take place in the cytosol of cells. Due to the use of two ATP molecules, the first phase is known as the "investment" phase, and the second phase is known as the "payoff" phase.
Glycolysis is crucial because it is the metabolic pathway by which glucose is converted into energy for the cells. For all living things, glucose is the most important source of energy. The majority of cells in the human body use glucose as their preferred fuel: Red blood cells can only fuel themselves with it.
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True or false for each statement...
What will happen over time if a population of organisms from the same species is physically separated and can't reproduce with one another?
Answer:
Not too sure about this but I think it would cause extinction
Explanation:
Without reproduction, there would be no offsprings and eventually the older generation of that species would die out.
a pathogen is any organism that causes a disease which of the following is an example of a pathogen that infects humans?
Answer:
You failed to provide the options
Explanation:
Please provide the options for assistance
HELP this is simple for science
Answer:
B, Cracking.
Explanation:
I believe that this would be the right answer because this is why a birds beak is designed like that. Hope it helps!
Answer:
B. Cracking
Explanation:
The Cardinal bird's beak is short and stout because it eats nuts. The cardinal would need a beak that is short and strong to help it crack open nuts.
.
How do ecosystems function? (Select all that apply.)
1.Abiotic factors depend on biotic factors for food, shelter, protection, and reproduction.
2.Biotic factors are dependent on abiotic factors for food and protection.
3.Abiotic factors affect the type and number of organisms that live in a particular ecosystem.
4.Biotic factors depend on each other for food, shelter, protection, and reproduction.
Answer:
2.Biotic factors are dependent on abiotic factors for food and protection.
3.Abiotic factors affect the type and number of organisms that live in a particular ecosystem.
Explanation:
An ecosystem is an environment that contains both living and non-living parts that actively interacts together.
The living part of the ecosystem is the biotic factors and the non-living parts are the abiotic factors.
The biotic components actively depends on the abiotic component for nourishment. This is exemplified through the process of photosynthesis. Also, the shelter of organisms are derived from the abiotic factors. The abiotic factors have significant impact on the type and number of organisms that live in an ecosystem.Which statement best describes how carbohydrates help the body maintain homeostasis
Answer:
they provide the body with energy
Explanation:
Carbohydrates are your body's main source of energy: They help fuel your brain, kidneys, heart muscles, and central nervous system. For instance, fiber is a carbohydrate that aids in digestion, helps you feel full, and keeps blood cholesterol levels in check.
Answer:
they provide body with energy
Explanation:
!!HELP ASAP!!
What is the advantage of seasonal migration in butterflies and birds?
Answer:
weather, which is why they migrate during certain times of the year.
Explanation:
What is interphase?
A. It is the time between cytokinesis and the G1 phase of the cell cycle.
B. It is the time right before a cell enters into mitosis.
C. It is the time a cell spends between cellular divisions
D. Is where non-dividing cells go
Answer:
c
Explanation:
Sorting items into different categories is known as what?

Answer:
Classifying
Explanation:
I looked it up for u :D
Phytopharmaceuticals are pharmaceutical compounds that are found in plants. They can be naturally occurring or a result of biotechnology. Recently, scientists created genetically modified (GM) corn that produces the antibiotic penicillin. The seeds of this GM corn contain a large amount of the antibiotic penicillin, making the cost of producing the penicillin much cheaper and making the method of delivering it to patients in need much easier. Given the benefits of this GM corn, which of the following may be a concern regarding its production?
A.The GM corn may develop infections from bacteria that are sensitive to the antibiotic.
B.The GM corn might pass resistant genes to other organisms, like birds, that may eat the seeds.
C.Because corn uses the wind for pollination, people allergic to penicillin may be at risk for exposure to the antibiotic in the air.
D.Increased availability of the antibiotic may increase the development of antibiotic resistance in the infectious agents penicillin is used to treat.
Answer:
The answer is D.Increased availability of the antibiotic may increase the development of antibiotic resistance in the infectious agents penicillin is used to treat.
Explanation:
The correct option is Increased availability of the antibiotic may increase the development of antibiotic resistance in the infectious agents penicillin is used to treat.
What are genetically modified crops?Through the use of laboratory procedures, genetic modification (GM) technology enables the transfer of genes for particular traits between species.
In the middle of the 1990s, GM crops were first made available in the U.S. The majority of GM crops being farmed in the U.S. have been modified to be herbicide or insect resistant. The three GM crops with the highest acreages are corn, soybeans, and cotton.
The technology has the potential to be used in the future to improve nutrition, stress tolerance, disease resistance, biofuel efficiency, and the cleanup of polluted places.
The U.S. Department of Agriculture (USDA), the Environmental Protection Agency (EPA), and the Food and Drug Administration (FDA), each with the ability to regulate particular parts of the crops, are in charge of regulating GM crops at the federal level.
Therefore, The correct option is Increased availability of the antibiotic may increase the development of antibiotic resistance in the infectious agents penicillin is used to treat.
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A rabbit eats grass. In this activity, the grass functions as a:
Most materials are densest in which phase?
Help‼️‼️‼️‼️
Finish the sentence
Answer:
Here are some ideas:
No other blood type can donate to anyone regardless of recipient's typeIt is the universal blood type Most commonly used type for transfusions; therefore it is in high demandHope this helped!
Which of the following is an example of homeostasis? A. The lungs of animals excrete carbon dioxide. B. The beaks of some birds are hooked in shape. C. We feel cooler when we stand under the shade of a tree. D. We feel warmer when all the windows are shut on a cold night.
Answer:
I would choose c
Explanation:
Please put me under brainliest?!
Answer: the lungs of animals exrcrete carbon dioxide.
Explanation:
please help me
......
......
Answer:
Nucleus.... H
Endoplasmic retuculum.... F
Golgi.... A
Mitochodrion... B
Chloroplast.... I
Cell wall..... J
Plasma membrane... K
Capsule.... C
Flagellum.... E
Ribosoms.... D
Centriole..... L
Central vacuole... G
What are considered an oxidizing mutagenic agent
Answer:
X - rays are considered an oxidizing mutagenic agent
a.
Which of the following is not a possible application for biotechnology?
crop production
b.
metal alloys
C. pollution control
d. medications
Please select the best answer from the choices provided
Answer:
B). Metal Alloys
Explanation:
Metal alloys are not a possible application for biotechnology. Therefore, the correct option is B.
What is biotechnology?Biotechnology is a field that applies biological processes and systems to create products and solve problems in various industries, including agriculture, medicine, and environmental science.
Option A, crop production, refers to the use of biotechnology to develop crops with improved characteristics. Option C, pollution control, involves the use of biotechnology to develop processes and technologies that can help to reduce environmental pollution. Option D, medications, refers to the use of biotechnology to develop drugs and therapies for various diseases.
Option B, metal alloys, does not involve biological processes or systems, and is therefore not a possible application for biotechnology. Therefore, the correct option is B.
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The question is incomplete, but most probably the complete question is,
Which of the following is not a possible application for biotechnology?
A. crop production
B. metal alloys
C. pollution control
D. medications
Where does food enter the blood vessels?
stomach
villi
liver
pancreas
Explanation:
it's a process so it's first goes in the mouth then it goes through the esophagus, stomach, small and large intestine. In the GI tract, nutrients and water from foods are absorbed to help keep your body healthy.
The muscles of the small intestine mix food with digestive juices from the pancreas, liver, and intestine, and push the mixture forward for further digestion. The walls of the small intestine absorb water and the digested nutrients into your bloodstream. I hope this helps
Please help!!
Name two systems and explain how they
interact in the carbon cycle.
Answer:
Carbon leaves the hydrosphere and enters the geosphere when sedimentary rocks form on the ocean floor. Ocean water can warm and release dissolved CO2 directly into the atmosphere. As carbon moves through Earth systems, the total amount of carbon in the carbon cycle remains about the same.
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. Carbon is the main component of biological compounds as well as a major component of many minerals such as limestone.
Explanation:
Describe how the skin cells, neurons, muscle cells , and blood cells you have observed relate to the functions of skin, nerve, muscle, and blood tissue
Answer:
The cells and neurons you observed are what skin, nerve, muscle, and blood tissues are made out of.
What are the parts of the cell theory? (choose all that apply)."
A. Most living things are made of about 50% cells
B. All cells come from preexisting cells
C. Cells are composed of tiny parts called organelles
D. All organisms are composed of one or more cells
E. The cell is the basic unit of organization
F.Cells can arise spontaneously
G.Cells are only visible through a microscope,
Answer:
The answer is most living things are made of about 50% cells
a tree frog leaping upwards off the tree branch is pulled downward by gravity and lands on another branch instead of continuing on in a straight line this in example of which law of Newton's
What is the function of the endocrine system?
Answer:
Endocrine glands release hormones into the bloodstream. This lets the hormones travel to cells in other parts of the body. The endocrine hormones help control mood, growth and development, the way our organs work, metabolism , and reproduction.
Explanation:
which soil and plant condition indicates a need for irrigation
Answer:
rooting depth
Explanation:
The need for water of plants is determined by the degree of soil moisture. The optimal soil moisture for most vegetable plant species is between 70 - 90%.
When the soil moisture is below 60%, most plants show a symptom of lack of water in the form of sports development of plants, flowers, and fruits fall off, while excessive watering can lead to rot of the plant or the plants have a lush increase, they become thin…