Answer:
Natural selection occurs if four conditions are met: reproduction, heredity, variation in physical characteristics and variation in number of offspring per individual.
Explanation:
DNA and RNA are both nucleic acids, but their structures and functions differ. Which of the following options correctly describes the structures and functions of DNA and RNA?
A)DNA is a double helix that carries all of the genetic information of an organism, while RNA is single-stranded and carries only half of the genetic information.
B)RNA is made from DNA and is used in transcription, while DNA is used in translation.
C)DNA is a double helix that is used to make proteins, while RNA is single-stranded and used to make lipids.
D)In DNA, adenine, thymine, guanine, and cytosine join together and carry all of the genetic information. RNA is made from adenine, uracil, cytosine, and guanine and is used to make proteins.
Answer:
D) In DNA, adenine, thymine, guanine, and cytosine join together and carry all of the genetic information. RNA is made from adenine, uracil, cytosine, and guanine and is used to make proteins.
Which of the following involves only abiotic factors?
A. a large rock being weathered by wind and rain
B. an otter using a stone to break open a sea urchin
C. a spider building a web in the corner of a building
D. a pine tree absorbing light from the Sun
A. This is because neither a rock, wind, or rain is a living organism.
Answer:
A. a large rock being weathered by wind and rain.
What is the powdery substance produced by plants to fertilize seeds?
Answer:
pollen
Pollen is a powdery substance consisting of pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells)
Explanation:
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Which of the following is required for a trait to become more common
over time in a population? *
There must be many varieties of the trait in the population.
The trait must allow members of the population to eat only some kinds of foods.
The trait must be the result of an immediate change in the environment.
The trait must give individuals an advantage in producing offspring that survive.
Answer:Natural selection is a process that causes heritable traits that are helpful for survival and reproduction to become more common, and harmful traits to become more rare. This occurs because organisms with advantageous traits pass on more copies of these heritable traits to the next generation.
Explanation:
(c) People who do not have diabetes maintain their blood glucose concentration below
180 mg per 100 cm
Explain how the body does this.
Predict the results if promoters were not part of the transcription process. Please explain in detail!
Answer:
In genetics, a promoter is a protein-binding DNA sequence that initiates the transcription of a single RNA from the DNA downstream. This RNA can encode proteins, or it can have mobile functions, such as tRNA, mRNA, or rRNA. The promoter is near the starting site of gene transcription, upstream of the DNA (towards the 5 'region of the sense strands). The promoters can consist of about 100–1000 pairs
Explanation:
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What animals compete over ants as a food source?
Answer:
Birds, Lizards, Toads, Snakes, Coyotes, and Spiders
Explanation:
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what am i? i am a word that means water from the sky in the form of rain, snow, hail, or mist.
Answer:
Percipitation
Explanation:
23. Why does an eagle need to have functional wings? Explain your response.
Answer:
an eagles legs arent fit for regular travel, rather for resting and perching, its wings are required for it to perfrom its basic survival actions, like hunting or traversing
Explanation:
Explain how the lungs are adapted for diffusion of gases
Answer:
well u know how we breath air in its the same as gas so your lungs are used to narcotics like smoking and vaping and stuff
Explanation:
Answer: Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Explanation: The alveoli are adapted to make gas exchange in lungs happen easily and efficiently. they give the lungs a really big surface area. they have moist, thin walls (just one cell thick) they have a lot of tiny blood vessels called capillaries.
Identify the picture of the organism belonging to Kingdom Animalia,
A)
B)
C)
D)
Answer: A
Explanation: The Kingdom of Animalia, is basically all animals and humans. To be in this kingdom you must be multicellular, and lack the cell wall and chloroplasts that are typical of plants. I hope this helps!
Why it's important for Environmental Scientists to have a background in many different fields of study?
Answer:
Environmental science involves different fields of study. ... Environmental scientists and specialists use their knowledge of the natural sciences to protect the environment and human health. They must have a solid background in economics, sociology, and political science.
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Answer:
gas particles are very losely packed then liquid
the roots of the gorse plant have bacteria that turn nitrogen gas into nitrate ions. Explain why nitrate ions are needed by the gores plant
Answer:
Nitrate ions are needed by the gores plant for photosynthesis and for producing proteins
Explanation:
Nitrates ion are essential for producing amino acid which in turn is used for producing proteins. Nitrates is taken up by plants through the roots. Nitrates is vey essential for the photosynthesis of the plants. Without nitrate a plant cannot carry out photosynthesis and hence will not be able to produce food for itself and other living beings.
In which era did human history begin?
A
Cenozoic
B
Paleozoic
С
Cambrian
D
Precambrian
E
Mesozoic
Answer:
Prehistoric
Explanation:
The Prehistoric Period—or when there was human life before records documented human activity—roughly dates from 2.5 million years ago to 1,200 B.C. It is generally categorized in three archaeological periods: the Stone Age, Bronze Age and Iron Age.
To stop a wound from bleeding, platelets in the blood clump together to form a blood clot. The clot dries into a hard scab to protect the wounded area. Underneath the scab, the blood supplies nutrients and oxygen that help new skin cells form. As the skin regenerates, the wound closes.
Which body systems interact with the integumentary system to close the wound?
A Circulatory and reproductive
B Immune and circulatory
C Reproductive and immune
D Digestive and endocrine
Answer:I think it’s c
Explanation:
Answer: Think it also c
Explanation:
If available, the body will always digest which macromolecule for energy
first?
lipids
proteins
nucleic acids
carbohydrates
how does the mRNA leave the nucleus?
Write about examples of how science has impacted your life.
Answer:
Science has made it much easier to understand the world around us, Work, improve technology, and planning ahead.
Explanation:
Scientific knowledge can improve the quality of life at many different levels—from the routine workings of our everyday lives to global issues. Science informs public policy and personal decisions on energy, conservation, agriculture, health, transportation, communication, defense, economics, leisure, and exploration. When scientific discoveries are combined with technological developments, they have resulted in the machines which are making our lives easy to manage. From household appliances to cars and planes, all are the result of science. Science has made it possible for farmers to save their crops from pests and other problems.
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Describe how having a peanut allergy can affect the human body systems. Provide 3 examples and evidence to match your statement.
1. Binary fission is observed in (a) Hydra (b) yeast (c) Amoeba (d) human being
Answer:
Amoeba
Explanation:
Binary fission is a type of asexual reproduction in which a cell divides to form two cells. It occurs in organisms that are protozoans. This means that two new daughter cells are formed in the process.
During the process of binary fission, the cell Is divided into two, this means that the DNA is replicated in both parts so that each of these cells becomes an independent organism, this means that they would be able to survive and function on their own.
Hence from the options listed, binary fission is observed in Amoeba
compare and contrast the rock cycle and the carbon cycle
Answer:
The rock cycle and water cycle overlap with erosion, transporting, and deposition.carbon atoms are used repeatedly on Earth and cycled between the atmosphere, hydrosphere, biosphere, and lithosphere through processes
Explanation:
The rock cycle and the carbon cycle are two different types of natural cycles that occur on earth. The difference include components, processes, time scale, human impact, and environmental implications.
What is the difference between rock cycle and carbon cycle?The rock cycle is a continuous process that occurs over millions of years, during which rocks are transformed from one type to another. There are three major types of rocks: igneous, sedimentary, and metamorphic. Each type of rock is formed through a different process.
The carbon cycle is the process by which carbon is cycled between the atmosphere, oceans, and living organisms. Carbon is essential for life, and is found in all living organisms. The carbon cycle is driven by photosynthesis, respiration, and decomposition.
During photosynthesis, plants absorb carbon dioxide from the atmosphere and use it to build organic molecules. These organic molecules are then consumed by other organisms, and carbon is transferred up the food chain.
When organisms die, their bodies are decomposed by bacteria and fungi, which release carbon dioxide back into the atmosphere.
In addition, carbon is stored in fossil fuels such as coal, oil, and natural gas, which are formed from the remains of ancient plants and animals. When these fuels are burned, carbon is released into the atmosphere, contributing to global warming.
Learn more about Rock cycle here:
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This external structure is often a feature of bacterial pathogens; it aids in allowing the bacterium to counteract the body's immune system cells, such as avoiding phagocytosis.
Answer:
Bacteria capsule.
Explanation:
The bacteria capsule is a layer of polysaccharides that is around the bacteria membrane. Its principal function is to protect the bacteria from dehydration, destructive toxins, and cells that can destruct the bacteria, such as phagosomes. As a result, the bacteria have a higher probability of surviving and colonizing.
Rice growing has involved the destruction of forests. Describe the long-term effects of deforestation on the environment.
The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for indigenous people.
Loss of Habitat. One of the most dangerous and unsettling effects of deforestation is the loss of animal and plant species due to their loss of habitat.
-Increased Greenhouse Gases.
-Water in the Atmosphere.
-Soil Erosion and Flooding.
-Destruction of Homelands.
What are the genotypes of the parents used in the cross shown below?
АА
Аа
Аа
аа
Answer:
Aa
Explanation:
in order to find the answer you have to look at the genotypes given as the offspring. the only way to get AA is to have both parents have and AA in their genotype, and the only way to get aa is to have 2 a's in their genotype, therefore making the genotype Aa.
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4 points
3
Choose all that can be classified as matter.
Helium gas that fills a balloon
4
Air that you breath in
Electricity
5
Gravity
6
Water bottle
Sheet of paper
• 7
4
1 point
Answer:
helium, air you breathe, gravity,
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Answer:
The answer is C.
Explanation:
Negative acceleration would mean downhill, therefore the correct answer would be c
4. How does the microscope contribute to your viewing of the Daphnia?
A) It decreases the viewing size of the sample
B) It does not change the viewing size of the sample
C) It increases the viewing size of the sample
Answer:
it increases the viewing size.
Explanation:
Function of microscope is used to enlarge organisms for better look
Question: What is a better name for 3-methyl-2-hexenoic acid?
Possible answers:
a. B.O.
b. pyruvate
c. Lactose
d. Lactose
Answer:
I think it's a the correct answer.
please answer asap
Describe the disadvantages and advantages of single use plastic.
Answer:
"There are many advantages of plastic materials such as:
They are light weight. They are water resistant. They are durable. They are strong.
...
Disadvantages of using ""plastics"" are:
They pollute our environment.
They pose a danger to wildlife.
They do not degrade quickly.
Explanation: