Answer:
I THINK A OPTION
Explanation:
BECAUSE WHEN A EXPERIMENT IS PROVED AGAIN AND AGAIN IT BECOMES A THEORY
A feedback system controls the menstrual cycle. How does a female resp
when the luteinizing hormone level drops sharply?
O A. Her progesterone level drops sharply.
B. She ovulates.
C. She menstruates.
D. Her estrogen level drops sharply.
Answer:
D
Explanation:
Her estrogen level drops sharply.
Answer:by ovulating
Explanation:bc I’m right
which statement is true? a. tissues are made up of organs b. body systems are made up of organs. c specialized cells are made up of tissue. d organs are made up
of body systems
Answer:
B
Explanation:
Many organs such as stomach, teeth, are some things that make up the digestive system.
remember: organelles -> cells -> tissue -> organ -> organ system -> organism.
Answer: B body systems are made up of organs
If you wanted to increase the rate of photosynthesis in a plant, you would develop a plant with which of the following characteristics
Answer:
Many broad leaves, which allows gathering more light.
Explanation:
What is the correct formula for calculating the age of a meteorite if using half-life?
Your answer is Age of Object = n times t 1/2
Answer: C
Explanation: I took the test on Edge2020
Where does the stench come from the is in your arms?
Answer:
The human armpit has a lot to offer bacteria. It's moist, it's warm, and it's usually dark. But when the bacteria show up, they can make a stink. That's because when some kinds of bacteria encounter sweat they produce smelly compounds, transforming the armpit from a neutral oasis to the mothership of body odor.
Explanation:
Body odor is caused by bacteria breaking down sweat and is largely linked to the apocrine glands. ... They are scent glands. The apocrine glands are mainly responsible for body odor because the sweat they produce is high in protein, which bacteria can break down easily.
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**WILL GIVE BRAINLIEST** DNA is a double helix with many regions. Which evidence best explains the structure of DNA? (4 points) A. The sequence of genes on a DNA molecule contain the instructions that code for proteins. B. DNA is a region on a protein that codes for genes that carry out cellular functions. C. The sequence of DNA on a gene contains the instructions that code for proteins. D. Genes contain regions that are called DNA and carry out functions essential to the cell.
The sequence of genes on a DNA molecule contains the instructions that code for proteins.
What is DNA sequencing?DNA sequencing refers to the overall laboratory technique for figuring out the precise sequence of nucleotides, or bases, in a DNA molecule. The series of the bases (regularly mentioned by means of the primary letters of their chemical names: A, T, C, and G) encodes the organic statistics that cells use to expand and operate.
What are the steps in DNA sequencing?Sample preparation (DNA extraction)PCR amplification of target sequence.Amplicons purification.Sequencing pre-prep.DNA Sequencing.Data analysis.Learn more about the sequence of DNA here https://brainly.com/question/24042339
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Which of the following best describes the components of these infectious particles? Your answer: Capsid made of nucleic acids with a protein-studded membrane Interior proteins surrounded by geometric nucleic acids Interior nucleic acid genome surrounded by a capsid
Answer:
Interior nucleic acid genome surrounded by a capsid
Explanation:
These are viruses, and their structure is best explained as interior nucleic acid genome surrounded by a capsid.
Capsids are the protein shells. They're not made of nucleic acid.
Viruses contain genetic information, which is nucleic acids like DNA or RNA, inside the capsid. It's protected by the protein layer.
Decide if each statement is a fact or a misconception about the theory of evolution by natural selection.
Answer:
No answer choices please provide some.
Explanation:
Can decoding a person's DNA be helpful? Why or why not?
Answer:
It depends
Explanation:
I can be helpful to learn more about the human body and help us to create certain medicines or study defects in the human body and try to fix it.
But it can be used against others. What is someone creates a biological weapon, find a way to mess with our DNA, or exploit and mutate it.
Explain the relationship between electricity and magnetism
Explanation: Ok so, Electricity and magnetism are two related phenomena produced by the electromagnetic force. And together, they form electromagnetism. A moving electric charge generates a magnetic field. A magnetic field induces electric charge movement, producing an electric current. ( Relationship of them ) Electric current produces a magnetic field. Electric currents and magnets exert force on each other, and this relationship has many uses. A temporary magnet, known as an electromagnet, can be made by passing electric current through a wire that is coiled around an iron core..
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Which substance should be monitored and controlled to help minimize the impact of human activity on air quality? A. Ozone B. Nitrogen C. Oxygen D. Water vapor
Ozone is the correct answer to your question
this is the correct answer
Football players often sustain lateral blows to the extended knee. Which of the ligaments is (are) damaged as a result? A. suprapatellar B. oblique popliteal and extracapsular ligament C. medial collateral, medial meniscus, and anterior cruciate D. arcuate popliteal and the posterior cruciate
Answer:
C
Explanation:
the medial collateral, medial meniscus, and anterior cruciate
The medial collateral ligament, or tibial collateral ligament, is one of the four major ligaments of the knee. It is on the medial side of the knee joint in humans and other primates. Its primary function is to resist outward turning forces on the knee. direct blow to the knee or a noncontact injury due to cutting or sudden deceleration or stopping may damage the MCL.
Which event in Earth's history most directly allowed life to exist on land?
Answer:
Earth's temperatures increased, causing widespread evaporation. Earth collided with a large object, forming the moon. Single-celled organisms released oxygen into the air when they photosynthesized.
Answer:
Earth's temperatures increased, causing widespread evaporation. Earth collided with a large object, forming the moon. Single-celled organisms released oxygen into the air when they photosynthesized
Explanation:
describe the benefits and drawbacks of experiments in a laboratory compared with experiments in a natural setting
Answer:
Experimental set up in the lab.are under the control of the scientist,therefore they can manoeuvre the the surrounding conditions to suit the experimental set up for best results. In addition the lab.environment does not involve the complex interactions or reaction between the set up and the lab. environments, compare to the natural environment.
Natural experimental set up gives accurate results from the interaction of the organisms(e.g animals) under investigation in the natural environments,thus the results obtained are natural interaction of the organisms based on the environmental factors the organism are exposed to.However, the number of organisms are usually large,and therefore great effort is needed to determine the actual cause and effects of the factors affecting the organisms under investigations in this natural environments.
A forest fire destroys an area. A small population of trees and a large population of birds are both affected. Which type of
limiting factor causes this?
Odensity dependent
Odensity independent
O population dependent
population independent
Answer:
density independent
Explanation:
In Ecology, a limiting factor refers to an environmental condition that hinders the growth and distribution of organisms in an ECOSYSTEM. A limiting factor hinders or hampers the productivity of an organism in its habitat.
There are two major types of limiting factors that affect organisms in their ecosystem viz: density dependent and density independent limiting factors. Density independent factor limits the size of a population independently of how dense the ecosystem's population is. This means that density independent factor affects a population irrespective of its size. Example of density independent factor are natural disasters e.g earthquake, hurricane, forest fire as mentioned in the question.
In this question, both populations of trees and birds are affected irrespective of the size of the ecosystem's population.
According to the cell theory, which describes cells?
Answer:
Living organisms are not created spontaneously
Explanation:
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In an experiment there are two groups. which group is not changed in any way
Answer:
The Control Group
Explanation:
A tropical rainforest includes trees, animals, insects, plants, rain, rivers, rocks, soil, and warm, moist air. Which spheres of Earth are represented in a tropical rainforest? A. biosphere, geosphere, hydrosphere B. cryosphere, hydrosphere, ionosphere C. geosphere, biosphere, cryosphere D. ionosphere, hydrosphere, geosphere
Answer:
The answer is A. Biosphere, Geosphere And Hydrosphere
Explanation:
The reason i choose this as the answer is it says "Tropical rain forest" it would only make since because hydrosphere is the "rain" in rain forest and geosphere would be the life around the rain forest. Biosphere would be the life in the rain forest
The spheres of Earth that are represented in a tropical rainforest are ( A ) ; Biosphere, geosphere , hydrosphere
The tropical rainforest been comprised of trees, animals insects, rivers and rocks, soil and warm moist air. contains ;
Biosphere : The ecosystem comprising of living things ( animals ) and non-living factors that the living things derive energy from Geosphere :This covers the presence of rocks and other underground minerals in an ecosystem as seen in the tropical rainforest. Hydrosphere : since there are rivers and rains the hydrosphere is properly represented in the tropical rainforest as well.Hence we can conclude that the spheres of Earth that are represented in a tropical rainforest are Biosphere, geosphere , hydrosphere.
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List three facts about glucose.
Answer:
Glucose is a sugar used for our body’s energy source
glucose is used for energy, fructose and glucose have the same formula but different struct-er, its a simple sugar
Explanation:
Explain the advantages of asexual
reproduction for insulin production by genetic engineering.
Insulin is produced by asexual reproduction, using the Biotechnology known as genetic engineering.
What are the advantages?The advantages include
Production of large quantities of insulin at the same time.This artificial insulin is very similar to the human insulin produced in the pancreas and that's why there is very less chance to cause allergic reactions in diabetics.What are the disadvantages?The production cost of insulin by this method tends to be high. Due to this insulin, some diabetics complain of an increase in episodes of hypoglycemic complications i.e, cases of dementia, falls, fractures, and heart attacks.Learn more about insulin production here:
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The substance represented by the scissors shown cutting the DNA is
1. Enzyme
2. A starch molecule
3. A carbohydrates
4. A far molecule
Answer:
1
Explanation:
endonuclease are such enzymes that cut the DNA molecule
The substance represented by the scissors shown cutting the DNA is an enzyme.
What is a simple definition of an enzyme?An enzyme is a biological catalyst and is almost always a protein. It speeds up the rate of a specific chemical reaction in the cell. The enzyme is not destroyed during the reaction and is used over and over.
What is an enzyme example?Amylase is found in saliva. Maltase – also found in saliva; breaks the sugar maltose into glucose. Maltose is found in foods such as potatoes, pasta, and beer. Trypsin – found in the small intestine, breaks proteins down into amino acids.
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Sarah performs an experiment to determine the effect of nitrogen on plants. She studies the effect of nitrogen on the growth of the root hair, height of the plants, and nodule formation. Which factor is an independent variable?
Answer:
Amount of Nitrogen
Explanation:
it's explained in :
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The question at the bottom
Which of the following is the effect to contractile vacuole when Amoeba sp is placed in salt water?
A. Burst and die
B. Stop contracting
C. Contract at fast rate
D. Contract at slow rate
What might be some implications of Robert Hazen’s experiments and research?
Answer: Robert Hazen studied carbon cycle and mineralogy.
Explanation:
The following are the implications of Robert Hazen's research work.:
1. He explored that the hydrothermal system present in moons and in some plants are responsible for the development of organic molecules which are responsible for origin of life.
2. Chiral mineral surfaces are responsible for selection and concentration of molecules.
3. He discovered and complied the list of mineral species on the Hadean Earth.
A male giraffe has 31 chromosomes in each of its sex cells. How many would be present in its body cells?
Answer:
62 chromosomes.
Explanation:
Sex cells are formed undergoing meiosis, which means that they contain a haploid number of chromosomes. (Half the number that somatic/body cells contain). 31 is half of 62, which means that the diploid number of chromosomes in the body cells of a giraffe would be 62.
compare the effects of mutuation and genetic Drift on the alleles in a population.
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Answer:
The possibilities of what will happen will be the North free magnet and the silk held magnet will repel and the other side of the magnet will be attacted to the north side of the magnet
Explanation:
V. Long Answer Type Questions
(5 Marks)
4. Recently Delhi Government has imposed a ban on use of polythene bags. After this many
shopkeepers have started using paper/jute/cloth bags.
(a) Mention two reasons why polythene bags are not environment friendly.
(6) Is the decision of using paper bags correct? Comment.
(c) Mention the associated values.
answer in 1 sentence each please cutiess
Answer:
a) Two reasons why polythene bags are not environment friendly are as following:
Plastic bags are made up of non-renewable materials such as polypropylene and their manufacturing and disposal cause greenhouse gases to release in the environment and contribute to global climate change.Polythene bags or Plastic bags are non-degradable and break into small pieces in the environment which are then consumed by wildlife or run off into oceans.b) Yes, the decision of using paper bags is correct as it will minimize the use of plastic bags and also reduce the environmental pollution caused by plastic waste. Paper bags can be reused or recycled again and again and they are easily degradable in the environment causing very less or no pollution.
c) The values associated with the ban on use of polythene bags is to establish a sustainable environment for our present and future generation. It will reduce environmental pollution and will minimize the effect of global warming.
What does the breakdown and absorption of minerals look like step by step and which organs are involved?
Answer:
During the process of absorption, nutrients that come from the food (including carbohydrates, proteins, fats, vitamins, and minerals) pass through channels in the small intestine into the bloodstream. The blood works to distribute these nutrients to the rest of the body.
Explanation: