In 1952, who discovered the spiraling shape of DNA?
a.Rosalind Franklin
b.James Watson
c.Francis Crick
d.Gregor Mendel
Answer:
The correct answer is Rosalind Franklin
which test would show positive for orange juice?
A. Benedict Juice
B. Lugol Test
C. Biuret Test
D..Sudan Red Test
Answer: lugol test
Explanation:
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Which descriptions can be used for sand on a beach?
abiotic factor, once living
biotic factor, living thing
biotic factor, nonliving thing
abiotic factor, nonliving thing
Answer:
D
Explanation:
It’s non living. And abiotic is also non living
Answer:
D: abiotic factor, nonliving thing
Explanation:
which of the following is an example of a decomposer?
A. tree
B. hawk
C. rabbit
D. mushroom
I think it's D mushroom.
Answer: Mushroom is the answer
When rain forests are cut down, there is a
1.
loss of fossil fuels that could be used by industry
2.
release of excess oxygen to the atmosphere
3.
release of chemicals which cause helpful mutations
4.
loss of genetic material available for research
Answer:
Explanation:
4.
When rainforests are cut down, there is a significant loss of genetic material available for research purposes. The correct option is 4.
What is a rainforest?
Rainforests are dense and diverse ecosystems characterized by high levels of rainfall and rich biodiversity. They are found in tropical regions near the equator, where temperatures and humidity are consistently high throughout the year.
Rainforests host a wide variety of plant and animal species, many of which have unique genetic characteristics and adaptations. These genetic resources hold immense value for scientific research, including the development of new medicines, agricultural improvements, and understanding of evolutionary processes.Destroying rainforests cause loss of access to potential sources of new drugs, the genetic diversity that could enhance crop breeding programs, and opportunities to study and understand the intricate interconnections and adaptations of species.Therefore, the correct option is 4.
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select all of the following events in which a physical change occurs
a. chocolate syrup dissolves in warm milk
b. toast is lightly charred in a toaster
c. sugar is heated until it turns into a brown caramel substance
I think it is case A and case B because they change physically, so the first from solid chocolate to liquid. This can be explained as a physical change.
Which of the following causes a physical change in the shape of an object?
Answer:
Any change that occurs without altering the chemical composition of a substance is a physical change. Physical changes can include changing the color, shape, state of matter, or volume of a substance. It is crucial to remember that physical changes never alter the chemical makeup.
Explanation:
I hope this helps a bit :3
Help please I’m gonna cry now please thank
Answer:to bring large molecules into the cell
Explanation:
How would you fix the following run-on sentence:
Going to school was a nice escape I felt like I was always arguing with my brother at home.
Going to school was a nice escape. I felt like I was always arguing with my brother, at home.
Answer:
Going to school was a nice escape, I felt like I was always arguing with my brother at home.
Explanation:
A comma (or a period) would fix the run-on sentence because "going to school was a nice escape" is a independent clause, as "i felt like I was always arguing with my brother at home" is as well. But being that they are connected a comma would be best
1. When studying animal behavior, the distribution of organisms within a choice
chamber can be studied to identify animal preferences. 20 Isopods are
placed in a 2-choice choice chamber. A cotton ball dampened with distilled
water is placed in Chamber A; A dry cotton ball is placed in Chamber B.
After 15 minutes 2 Isopods are located in Chamber B, and 18 isopods are found
in Chamber A. Perform the chi-squared test to determine if the distribution
of isopods is significant or due to random chance. (3 points)
Answer:
The distribution of isopods is statistically significant.
Explanation:
H₀= Individuals will be equally distributed
H₁ = Individuals will not be equally distributed.
Chi square= ∑ ((O-E)²/E)∑ is the sum of the terms
O are the Observed individuals: 2 in chamber B, and 18 in chamber A.
E are the Expected individuals: 10 in each chamber
X² = ∑ ((O-E)²/E) = ((2 - 10)²/10) + ((18 - 10)²/10) = 6.4 + 6.4 = 12.8
X² = 12.8
Freedom degrees = K – 1 = 2 - 1 = 1(K = Independent variables = dry cotton and wet cotton)
Significance level, 5% = 0.05 Table value/Critical value = 3.8412.8 > 3.84 meaning that the difference between the observed individuals and what the expected individuals in each chamber is statistically significant. Not probably to occur by random chances.
There is enough evidence to reject the null hypothesis.
Read this sentence by Ralph Ellison:
When I discover who I am, I'll be free.
The author uses the word discover to emphasize which idea about freedom?
A.
It requires a journey of self-knowledge.
B.
It's made possible through education.
C.
It means following a set path.
D.
It's an impossible task for everyone.
Answer:
D for connexus practice
Explanation:
What would the Earth be like if it had no atmosphere?
Answer:
It would be silent. Sound requires a medium to transmit waves. You could feel vibrations from the ground, but you wouldn't hear anything.
Birds and planes would fall from the sky.
The sky would turn black. It's blue because of the atmosphere.
It would be a vacuum so All plant and animal life on the Earth's surface would die.
Even if survive you'd get a massive sunburn on exposed skin because the Earth's atmosphere is what filters solar radiation.
The rivers, lakes, and oceans would boil. Boiling occurs whenever vapor pressure of a liquid exceeds external pressure, in vacuum there is no pressure. Even if water still be there it would freeze.
Answer:
It would be like Mars. There wouldn't be any oxygen for living things
Name an animal that both direcrly and I’m direcrly benefits humans
Answer:
Honeybees both directly and indirectly affect humans. They make honey and pollinate .
Explanation:
Answer:
honey bees they help by pollonating plants an flowers because if they didnt then we couldnt survive
Explanation:
I will name you the Brainlyest if you answer
PLEASE HELP ME!!!
Answer:
this is because water which absorbs by the root through osmosis from the soil was transported to other part of the plant that is why root appear dehydrated.
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Read the following scenario.
After getting their results in, a group of scientists went back and looked at their study. As planned, their experiment consisted of three groups. The first group received a new medicine at a normal dose, the second group received the medicine at half the dose, and the third group received the medicine at twice the dose.
Which of the following best describes what went wrong with the scientists’ study?
a. an improper experimental procedure
b. the lack of a control group
c. selection bias
d. human error
(its not a)
Answer:
the answer is B I think if I'm wrong I'm sorry hope this helps and have a good day.
In the given scenario, the best description of what actually went wrong with the scientists' study is the lack of a control group. Thus, the correct option will be B.
What is a scientific study?A scientific study or a scientific method can be generally referred to as a kind of study which involves a scientific theory, scientific models, experiments and the physical situations. Scientific studies may also refer to the scientific method, a body of the techniques for investigating the different phenomena, based on the empirical or measurable evidence that is a subject to the principles of logic and reasoning purpose.
In the given scenario, the best description which mentions what actually went wrong with the scientists' study is the lack of a control group in the study.
Therefore, the correct option will be B.
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You are growing a plant in space and remove oxygen from it's growth chamber. What do you expect to happen to the plant?
Answer:
It is gong to suffocate. It will die and shrivel up.
Explanation:
The heart gets its own blood supply through the______ circulation
PLS HELP ME
Answer:
tricuspid valve.
Explanation:
The degree to which two separate structures that are closed together can be distinguished .
Answer:
Resolution
Explanation:
Explanation:
the answer is Resolution
14. When the oxygen catastrophe occurred, which organisms died?
A. aerobic
B. facultative bacteria
C. anaerobic
D. all organisms
Answer:
B.
Explanation:
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What happens at the Pacific Ring of Fire which circles the Pacific Ocean from the
west coast of North and South America to the east coast of Asia?
0It provides heat for the regions surronding the ring.
O It produces volcanoes as a result of tectonic plate movement
0It produceshurricanes.
O sedimentary rocks are produced as a result of the heat produced.
Answer: O It produces volcanoes as a result of tectonic plate movement
Explanation: The way the plate tectonics move create the volcanoes due to the direction they're moving which allows the magma/lava to flow making it a "volcano"
The pacific ring of fire which circles the Pacific Ocean from the west coast of North and South America to the east coast of Asia is, it produces volcanoes as a result of tectonic plate movement. The correct option is b.
What is the Pacific Ring of Fire?The Ring of Fire is a ring of volcanoes and seismic activity, or earthquakes, that circles the Pacific Ocean. The Ring of Fire is home to over 90% of all earthquakes and 75% of all active volcanoes on the planet.
The Ring of Fire is not a perfectly circular ring. The belt is associated with volcanoes throughout its length, which is why it is known as the "Ring of Fire." On the oceanic side, the belt is framed by a series of deep ocean troughs, and continental landmasses lie behind.
Therefore, the correct option is b, It produces volcanoes as a result of tectonic plate movement.
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Suppose global warming leads to a year of less rainfall How will this affect the environment's carrying capacity?
This type of transport uses energy and moves from low to high
concentration *
A:Diffusion
B:Osmosis
C:Facilitated Diffusion
D:Molecular Transport
Answer:
Molecular Transport
Explanation:
Diffusion , Osmosis , and Facilitated Diffusion have nothin to do with tranporting. So one can only assume its Molecular Transport by process of elimination.
each daughter cell is exactly like the parent cell same kind and ______ of chromosomes as the original cell
fill in the blank ... helppp
Discuss alcoholic fermentation including the function of the production of ethanol, as well as an example of an organism that carries out this process.
Answer:
Yeasts by fermenting carbohydrates as a product obtain alcohols, of which they are ethanol.
Some yeasts are edible and are used in the dough to lift them, others are not considered edible.
On the other hand, there are two types of fermentations, acidic and alcoholic, yeasts that are fungi ferment carbohydrates to give ethanol as a product.
Explanation:
Alcoholic fermentation occurs because the molecular structure of the carbohydrate adds an alcohol group, and this is what characterizes the alcohol within this group. Ethanol is an alcohol that has two carbons and an alcohol group accompanied by hydrogens that complement the four bonds of each carbon.
The term et of ethanol refers to the presence of two carbons in organic chemistry.
Which system provides humans with the ability to perceive,understand and react to environmental events?
Answer:
The human visual system.
Explanation:
Descirbe how those three body systems work together when you bite into a cracker to change the cracker into a form that can be used by your body cell's
Answer:
For a cookie to be converted into a source of energy it is necessary for the chewing system, the endocrine system and the digestive system to function.
Explanation:
The masticatory system would begin with the formation of the bolus, together with the enzymatic action of alpha amylase, in addition to simplifying the macromolecules into micromolecules for better digestion and absorption.
The digestive system would take care of the destruction of polysaccharides into monosaccharides for assimilation and incorporation thanks to a necessary enzymatic combo and a ph set.
On the other hand, the endocrine system is the star system for the assimilation of glucose, which is the monosaccharide product of the digestion of the cookie, insulin is the hormone that is responsible for providing the entry of glucose to the cellular LIC, that is, inside the cell for it to unfold and form the energy currency known as ATP.
write two important pieces of info on the role of fats
Answer:
* Fats help to keep our body warm.
* They store energy and produces it when the body is in need.
* They act as messengers; this helps proteins to do their job.
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fat keep body warm...............
fat store energy....................................
What is the name of the tiny blood vessels that surround the alveoli? O A. Capillaries O B. Pharynx O C. Bronchioles O D. Trachea
Answer:
At the very end of the air passages, are clusters of tiny air filled sacs called alveoli . These air sacs are surrounded by small blood vessels called capillaries
Explanation:
The name of the tiny blood vessels that surround the alveoli is Capillaries.
What are capillaries?Capillaries are the places where the exchange of substances between the blood and adjacent tissues takes place. Substance exchange can occur both between the cells that form the vessel wall and across it. Pores present in some types of blood capillaries also act as transfer sites.
Blood capillaries or capillaries as the lining of these little balls are called, are blood vessels of the circulatory system in the form of small tubes. In them, there is a large amount of carbon dioxide that diffuses into the alveolar air.
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Explain how insulation increases the efficiency of heating and cooling systems.
