Help 20 pointsssssssss

Answer:

This question is incomplete as it lacks options, the options are:

A) a single variable

B) multiple variables

C) the hypothesis

D) scientific observations

The answer is A

Explanation:

An experiment is conducted to solve a particular problem or find answers to a given scientific question. In an experiment, which usually consists of variables, only A SINGLE VARIABLE is tested at once.

This means that the effect of a variable called INDEPENDENT VARIABLE is tested at a time. The independent variable is the variable that is changed or manipulated in an experiment. This means that only a SINGLE VARIABLE can be changed at at time in an an appropriate design experiment.

Answer:

F

because global warming did happen before lol and a theory is somethng u think exist so..

Explanation:

Answer:

True

Explanation:

Eras and periods both appear at the start of the Cambrian period.

In geological time scale, period is the fundamental unit.

Few periods combine to form an Era.

Few Eras combine to form an Eon.

Time period before the Cambrian period (which is the first period in Paleozoic era) is generally termed as 'Precambrian' time. Classification of time scale as periods and eras began at the start of Cambrian period.

Answer:

The answer is C.

Explanation:

Eras and periods both appear at the start of the Cambrian period.

Although the application of biotechnology has many potential advantages, it also has potential risks. These risks include increased resistance of insects and microorganisms, overproduction of new plants, and competition with natural organisms. Some individuals may not believe that the benefits of biotechnology outweigh the risks.

This is the exact answer on edge

Answer:

The application of biotechnology provides many advantages and risk. Risk include overproduction of new plants, and competition with natural organisms, resistance to insects and many more.  Some people do not belive the benefits are greater than the risk. Explanation:

Although the application of biotechnology has many potential advantages, it also has potential risks. These risks include increased resistance of insects and microorganisms, overproduction of new plants, and competition with natural organisms. Some individuals may not believe that the benefits of biotechnology outweigh the risks.

Answer:

The phenomenon of unequal separation in meiosis is called nondisjunction. If nondisjunction causes a missing chromosome in a haploid gamete, the diploid zygote it forms with another gamete will contain only one copy of that chromosome from the other parent, a condition known as monosomy. I think sorry if wrong ;)

Answer:

look it up  or fail

Explanation:

Answer:

2 ATP are created in Kreb cycle

Answer:

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Explanation:

Genes are segments of DNA that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.

The term chromosome comes from the Greek words for colour (chroma) and body (soma). Scientists gave this name to chromosomes because they are cell structures, or bodies, that are strongly stained by some colourful dyes used in research. The unique structure of chromosomes keeps DNA tightly wrapped around spool-like proteins, called histones.

Without such packaging, DNA molecules would be too long to fit inside cells.

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Answer:

glycolysis

Explanation:

Answer:

answer of this question is glycolysis

:-))

Answer:

A

Explanation:

Legume plants are important in fixing nitrogen. Therefore, the correct option is A.

Beans, peas, lentils and clover are examples of leguminous plants that are important for nitrogen fixation. They co-exist well with rhizobia, a type of bacteria that fix nitrogen. These bacteria live in nodules on the roots of legumes and use a process called nitrogen fixation to convert atmospheric nitrogen into a form that plants can use.

Legumes can obtain substantial amounts of nitrogen, an important nutrient for plant growth, without being entirely dependent on soil nitrogen, because of their ability to fix nitrogen. Legumes play an important role in agriculture and ecosystems, by adding nitrogen to the soil and increasing its fertility. Legumes are valuable crops because of their high protein content as well as their ability to improve soil health by fixing nitrogen.

Therefore, the correct option is A.

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Answer:

Explanation:

The rate limiting reaction of aerobic respiration involves the phosphorylation of fructose phosphate by the enzyme phosphofructokinase. The rate at which this enzyme makes product is [increased, decreased] when ATP levels rise because the molecule ATP binds to an allosteric site on the enzyme and acts as a direct inhibitor. When ATP levels fall AMP binds to the allosteric site of phosphofructokinase. This interaction leads to an increase of cellular ATP, so that this is an example of a negative feedback loop.

An aerobic respiration can be defined as a chemical and biological process that involves the use of oxygen in living organisms to make energy (ATP) from carbohydrates (sugars) during cellular respiration.

This ultimately implies that, an aerobic respiration can take place or occur in the presence of oxygen.

An enzyme can be defined as a biological catalyst that typically speeds up (accelerates) the rate of a chemical reaction, especially by lowering the activation energy of its chemical reactants.

There are four (4) main factors that affect the actions and the rate of an enzyme and these include the following:

Read more on here:

Answer:

TRUWE

Explanation:

Answer:

a

Explanation:

As arizona poppy plant carries out photosynthesis, Glucose is created using carbon dioxide. The Arizona poppy is a plant indigenous to the American Southwest.

Photosynthesis is a process that plants and other organisms used to convert light energy into chemical energy that can then be released to fuel the organism's activities via cellular respiration.

Plants absorb carbon dioxide (CO2) and water (H2O) from the air and soil during photosynthesis. Water is oxidized within the plant cell, which means it loses electrons, whereas carbon dioxide is reduced, which means it gains electrons. This converts water to oxygen and carbon dioxide to glucose.

Photosynthesis is the process by which carbon dioxide and water are converted into oxygen and glucose. The plant consumes glucose as food and produces oxygen as a byproduct. Cellular respiration is the process by which oxygen and glucose are converted into water and carbon dioxide.

Thus, As arizona poppy plant carries out photosynthesis, Glucose is created using carbon dioxide.

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Answer:

Here u go if it's wrong sorry if it's correct u welcome ;)

Glycolysis is the splitting, or lysis of glucose. Glycolysis converts the 6-carbon glucose into two 3-carbon pyruvate molecules. This process occurs in the cytoplasm of the cell, and it occurs in the presence or absence of oxygen. During glycolysis a small amount of NADH is made as are four ATP.

Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released by people burning fossil fuels.

hope this helps ^^

Answer:

False

Explanation:

Answer:

Water or carbon dioxide

Explanation:

Cellular Respiration:

glucose + oxygen --> water + carbon dioxide

Photosynthesis:

water + carbon dioxide --> glucose + oxygen

Answer:Do not worry im here to help!

EXTINCT ANIMALS THAT ARE CLOSELY RELATED TO US ARE:Some of the extinct members of this family include Gigantopithecus, Orrorin, Ardipithecus, Kenyanthropus, and the australopithecines Australopithecus and Paranthropus.

animals that are not exticnt and are stilll here and are closley related to us are the: orangutans and gorillas are in the great ape family, humans are most closely related to two other species in the family: bonobos and chimpanzees.

Answer: a gigantopithecus, Paranthropus, Adripcines, and an Orrorin.

The similarities they have with us are the face features ,personality traits, and DNA. The differences is that they have way more body hair, communication, and mental abilities.

Answer:

i'm confused how you don't know this already but it is nucleus lol

Explanation:

Answer:

2: nucleus

Explanation:

the nucleus holds the cell's dna and contains materials to build mRNA and controls the cell's growth and cell division

Answer:

A. True

Explanation:

Apoptosis is a normal cellular process in which the cell inherently programs the death of a mutated or damaged cell without affecting the healthy condition of the other surrounding cells by proliferating.

Apoptosis is a system of checks and balances that the cell uses to prevent damaged or mutated cells from proceeding to the next phase in the cell cycle. This curbs or prevent the damaged cell from passing on the problem to its daughter cells. Hence, according to this question, it is TRUE.

Answer:

Identify minerals based on their physical characteristics. A hardness of 2.5 simply means that the mineral is harder than gypsum. Mohs In introductory geology, the key fracture types to remember are irregular, which most minerals exhibit.

Answers are below:

8. aa

9. GG, Gg

10.pp

11. SS, Ss

12. rr

13. ii

14. tt

15. Aa, AA

16. PP, Pp

17. RR, Rr

18. gg

Answer: D. Replacing thermal power plants.

Explanation:

Thermal Power Stations are some of the biggest users of water in the world because water is integral to producing electricity in them. These stations burn fossil fuels like coal which then vaporizes water so that it becomes steam which then drives turbines that produce electricity.

Water is also used for cooling high temperatures produced.

If these thermal stations are replaced with something that uses less water, it will go a long way in keeping the water debt less than the water supply.

Because Earth has limited materials and room for deceased creatures, biogeochemical cycles are vital to life and ecosystems. Biogeochemical cycles transport and store these chemicals for living creatures.

Because there is a finite quantity of stuff on earth and a certain amount of room for dead species as well, biogeochemical cycles are crucial for life and significant to ecosystems. Additionally, biogeochemical cycles are crucial because they move and store these chemicals so that living things may use them.

The flow of nutrients and other elements between biotic and abiotic forces is referred to as "biogeochemical cycles" in most cases. The words "bio" and "geo," which refer to the biosphere, "geo" and "chemical," which refer to the elements that flow through a cycle, are the roots of the phrase "biogeochemical."

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Answer:

lowering it's temperature

Explanation:

i guess because hotter it is the note liquidy

Answer:

D. stirring or shaking the mixture

Answer:

A

Explanation:

different types of cells use different amounts of energy

Some cells, such as human nerve and muscle cells contain many more mitochondria than do cells such as skin cells, some cells have more mitochondria than others as they use more energy. Thus option A is correct.

Mitochondria is commonly called as the “Powerhouse of the cell, these are double membrane-bound organelle present in most eukaryotic organisms located in cytoplasm and function as cell's “digestive system.”

They involve in break down of nutrients and generate energy-rich molecules, cellular respiration occur within the mitochondria,  was first described by a German pathologist named Richard Altmann in the year 1890.

The mitochondrion is rod-shaped structure found in both plant and animal cell, size ranges from 0.5 to 1.0 micrometre in diameter, consist outer membrane, an inner membrane, and a gel-like matrix.

The outer and inner membrane are composed of proteins and phospholipid layers which is separated by the intermembrane space.

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Answer:

True

Explanation:

But because the Earth rotates, circulating air is deflected. Instead of circulating in a straight pattern, the air deflects toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere, resulting in curved paths. This deflection is called the Coriolis effect.

Answer:

true

Explanation: