Caroline set up a fourth test tube that contained a leaf and was exposed to dim
light.
After two hours the colour of the indicator solution in this test tube remained orange.
Explain why.
(hydrogen carbonate indicator test)
Answer:
Answer
+ 5.0
Answer: The NEGATIVE CONTROL is the
test tube that is filled with ONLY distilled
water.
Explanation:
A negative control of an experiment is
carried out alongside the main primary
experiment except that the treatment is
changed to something that is predicted
to have no result. In the negative
control, the student does not expect any
response. This would help the student
compare the result of a new experiment
against an already known existing results.
Analysing the experiment carried out
by the student, She filled two test tubes
with distilled water and placed a piece
of Elodea in one of the tubes, leaving
the other without a plant. The other test
tube that contains only distilled water is
the negative control because she wasn't
expecting any result from it. It's also
served as a control sample to the primary
experiment. This is observed as she
blew in each tube to add carbon dioxide,
which caused the distilled water to
become more acidic. This would help the
student know that the that experimental
results are valid and to ensure that time is
saved
haemoglobin is presented in........................... cells
What type of relationship exist between the common teasel and all of the other plants?
Answer:
correct me if im worng but i think is Dipsacaceae
Explanation:
Mr. Jones' class is asked to properly identify multicellular eukaryotes. Which key terms below would BEST help a student properly classify these organisms?
A. can be unicellular or multicellular, have a nucleus, and contain complex organelles
B. can only be unicellular, do not contain a nucleus, and do not contain complex organelles
C. can only be multicellular, do not contain a nucleus, and contain complex organelles
D.
can be unicellular or multicellular, have a nucleus, and do not contain complex organelles
Define bronchiole and alveoli.
Answer:
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Your bronchioles are some of the smallest airways in your lungs. Inhaled air passes through tiny ducts from the bronchioles into elastic air sacs (alveoli). The alveoli are surrounded by the alveolar-capillary membrane, which normally prevents liquid in the capillaries from entering the air sacs.
How do archaebacteria survive extreme environments?
Please help me! NO LINKS.
Answer:
Archaebacteria are found in very harsh conditions such as in the volcanic vents or at the bottom of the sea. They are often called "extremophiles". They can easily survive in such extreme environment as sea vents releasing sulfide-rich gases, hot springs, or boiling mud around volcanoes.
Explanation:
Answer:
Archaebacteria are found in very harsh conditions such as in the volcanic vents or at the bottom of the sea. They are often called "extremophiles". They can easily survive in such extreme environment as sea vents releasing sulfide-rich gases, hot springs, or boiling mud around volcanoes.
Explanation:
ayye girl hru??
Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called ________ ganglia.
Explanation: Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called Intramural ganglia!!! Hope This Helps! Happy Early Christmas! :D
You contract an infection from an unknown pathogenic organism. Your doctor conducts a biochemical analysis of the pathogen and discovers that it contains chitin. The pathogen is most likely a
Answer:
Fungus
Explanation:
Chitin is a fibrous substance consisting of polysaccharides and forming the major constituent in the exoskeleton of arthropods and the cell walls of fungi. This would point to it most likely being a fungal agent. Hope this helps!
Chitin is a natural polymer and a nitrogenous carbohydrate. The cell walls of fungus pathogens are formed of the N-acetylglucosamine polymer chitin.
What are pathogens?Pathogens are germs that enter, grow, and cause sickness in their host's body. It simply needs a host body to live.
Pathogens have the ability to circumvent the immune system. It likewise relies on body chemicals to survive. Depending on the kind, these bacteria can move from one host to another in a variety of ways.
What are fungus pathogens?The plant is home to millions of fungus species. Not all of them are pathogenic. Only roughly 300 of them are capable of causing disease. Fungi can be found on the surface of your skin or inside your food. They only cause illness if they overgrow.
Fungi have two protective layers, a membrane, and a cell wall, and they are difficult to destroy. The severity of a fungal infection might vary.
What are the examples of fungus?Ringworm.Vaginal yeast infection.Jock itch. Other fungiThus, we can conclude that the unknown pathogenic organism is fungus because fungus pathogens contain chitin.
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11 Apply If you have a cold that causes congestion in your sinuses, how
might that affect your sense of smell? Support your claim with evidence.
Answer:
If there's a blockage of this channel, like when you have a stuffy nose due to the flu or a cold, odors can't get to the sensory cells the smells stimulate. This results in you losing a lot of your ability to taste the flavor of food. In this manner, your senses of taste and smell work closely together.
Answer:
It will affect your smell because you can have a lot of snot in your nose and your nose will be stopped up with all that stuff.
PLSSS HELP ME!!!
All of the following are functions that the kidney performs except
A. controls pH
D. produces erythropoetin
B. produces urea
E. eliminates nitrogenous wastes
C. maintains blood pressure
eliminates nitrogenous wastes.I think
Which of the following statements is not true about heterotrophs?
Group of answer choices
Heterotrophs are classified as consumers.
Heterotrophs are at the base of most food webs.
Heterotrophs cannot make their own food.
Heterotrophs can consume autotrophs.
Heterotrophs are consumers, cannot make their own foods, and have some of them have the capacity to consume autotrophs. Hence, they are not at the base of most food webs.
Heterotrophs are organisms that have no capacity to manufacture their own foods, unlike autotrophs.
They depend on other organisms for their foods. Hence, they are known as consumers, unlike autotrophs that are called producers.
Heterotrophs are of different types:
Herbivores: those that consume autotrophs onlyCarnivores: those that consume meat onlyOmnivores: those that consume both autotrophs and meat.Thus, heterotrophs do not occupy the base of food webs. The base of food webs are mostly occupied by autotrophs, the producers.
More on heterotrophs can be found here: https://brainly.com/question/13420317?referrer=searchResults
Heterotrophs are at the base of most food webs is the statement that is false.
Heterotrophs are those that must consume organic matter from other living beings.Autotrophic beings represent the base in the totality of the trophic cycles or food chains, since they constitute the producing link, they are capable of taking advantage of energy and inorganic matter to make their food.Heterotrophs are characterized by not having the ability to produce their own food in their body, for this reason they need to consume the organic matter of other living beings.Therefore, we can conclude that autotrophs are considered producers and are at the base of most food webs, while heterotrophs are considered consumers which could not survive without feeding on other organisms.
Learn more about heterotrophic organisms here: https://brainly.com/question/1212341
What are some benefits of farming for the society/environment?
Answer:
Pasture and cropland occupy around 50 percent of the Earth's habitable land and provide habitat and food for a multitude of species. When agricultural operations are sustainably managed, they can preserve and restore critical habitats, help protect watersheds, and improve soil health and water quality. in addition to preserving the earth's natural resources, sustainable agriculture benefits the environment through helping maintain soil quality, reducing erosion, and preserving water. Plants and trees in agricultural systems help to retain and add water to underground aquifers. ... Together, they act as an important buffer in the landscape, preventing flooding, reducing water pollution from agricultural runoff and preventing erosion, while providing us with nutritious food at the same time. Farming creates opportunities to lift people out of poverty in developing nations. Over 60 percent of the world's working poor works in agriculture. Farming creates more jobs, beginning with farmers, and continuing with farm equipment makers, food processing plants, transportation, infrastructure and manufacturing.
Explanation:
The benefits are:
early agriculture
Morden agriculture's opportunity
Development in farming sustainability
Farmers improve their communities
What two-word term has been used to describe the annual shopping and sports mayhem in Philadelphia and the time when U.S. retailers typically show a profit?
The two-word term used to describe the annual shopping and sports is Black Friday.
From the United States (U.S.) financial history, the two-term word black Friday was first used in 1869.
The first annual black Friday occured in Philadelphia in which alot of retailers attracted their key customers and made profits through the discount they placed on their products.
Black Friday was used to describe the financial crisis after the United States's gold market crashed.
Literally, black should depict something negative or loss but on the contrary, the business world uses black to describe profit.
Therefore, the two-word term used to describe the annual shopping and sports is Black Friday.
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the part of the eye that determines eye color is the
Answer:
It is the iris that determines eye color.
Explanation:
A person's eye color results from pigmentation of a structure called the iris, which surrounds the black hole in the center of the eye, the pupil. It helps control how much light can enter the eye. The color of the iris can obviously range from blue, green, brown and I think grey too if fiction books can be trusted lol
In terms of structure and function how do the vacuoles in a typical plant cell compare to those of a typical animal cell
Answer:
Vacuoles in animal cells do NOT help the cell take its shape, however, in plant cells, vacuoles are larger, and DO affect the shape of the cell.
The function of the vacuole in plants is different from that in animals, as the vacuole in animals is smaller, while in plants it is larger and pushes the nucleus to one side while consisting of water and other materials.
What is the significance of the vacuole in plants and animals?Vacuoles are cell organelles found in both plants and animals, in plants, vacuoles are large, fluid-filled structures that occupy a large portion of the cell, and they perform several important functions, including storing water and helping to maintain the shape of the cell, while in animals, vacuoles are smaller and less in number than in plants, as they have a variety of functions, like storing waste materials, etc.
Hence, the function of the vacuole in plants is different from that in animals, as the vacuole in animals is smaller, while in plants it is larger and pushes the nucleus to one side while consisting of water and other materials
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which statement best describes why genetic variation is beneficial to populations of organisms A. Individuals look different from one another. B . Only one parent is needed to produce offspring. C. Populations of the organism increases more rapidly. D. Species can better survive environmental changes.
Answer:
Explanation:
Its D, species began having more beneficial adaptions to their environment causing them to live longer.
Answer:
It's D. Species can better survive environmental changes.
Which event takes place first in the stages before the birth of a star?
Answer: The contracting cloud is then called a protostar. A protostar is the earliest stage of a star's life. A star is born when the gas and dust from a nebula become so hot that nuclear fusion starts.
Explanation:
The primary food for supplying energy for muscular activity is protein. Group of answer choices True False Next
Answer:
Carbohydrates, such as sugar and starch, for example, are readily broken down into glucose, the body's principal energy source. Glucose can be used immediately as fuel, or can be sent to the liver and muscles and stored as glycogen.
you can find a nucleus in the cells of human,protists, bacteria and viruses
нєℓℓσ тнєяє!
Bacteria lack a nucleus, mitochondria, chloroplasts and organelles. Protists can either be single-celled or multiple called. They contain a nucleus surrounded by a nuclear membrane. The DNA or genetic material of a bacteria is not surrounded by a protective membrane known as a nuclear membrane.
I really hope this helps! Have an amazing day/evening/night!
Hugs, Kiwi <3
An individual heterozygous for the IA and IB alleles has a blood type of AB. What type of inheritance pattern is this?
Answer:
Codominiece Blood Pattern
Explanation:
Which of the following best describes the structural make-up of a gene?
Answer:
A single DNA molecule is wrapped around in proteins
Explanation:
I don't know if this is correct, but I hope I helped! ;)
Answer:
here's my answer :)
Which term means, "changes over
time"?
A. ecological disturbance
B. ecological succession
C. biodiversity
For each of the following statements, determine if it is true or false and describe how you know.
A. All living organisms share the same sequence of nitrogen bases.
B. All living organisms share common organelles.
C. All living organisms share the process for reproducing.
D. All living organisms share a universal genetic code.
I thinck Letter C
Explanation:
Noo need explanation.
where in the chloroplast does the photo part of photosynthesis occur?
Answer:
Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is obtained from air that enters the leaves through the stomata and diffuses to the cells containing chlorophyll.
Explanation:
:)
Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is enters the leaves through the stomata and diffuses.
What is the function of the chloroplast?The organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules, cell walls allow plants to have rigid structures.
Thus, photosynthesis occur in the chloroplast.
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On a cellular level, why do we need to breathe?
a
Our cells need oxygen
b
Our cells need glucose
c
Our lungs are empty
d
Our cells need carbon dioxide
Answer:
A. Our Cells need Oxygen
what does it mean for a bacteria or protist to be photosynthetic?
Photosynthetic protists such as the various types of algae contain plastids. These organelles serve as the site of photosynthesis (the process of harvesting sunlight to produce nutrients in the form of carbohydrates). The plastids of some protists are similar to those of plants.
Mark as Brainliest Answer
Self replicating organelles made up of nine
bundles of microtubules and are on found in
animal cells.
Answer:
Self-replicating organelles made up of nine bundles of microtubules and are found only in animal cells. They appear to help in organizing cell division, but aren't essential to the process. * always found together and near the nucleus. Like a bundle of straws
Explanation:
HELP ME ASAP
A stray dog is brought into Destiny's clinic. The poor thing is eaten up with fleas, and she can see that it has terrible sores on its stomach. After giving the dog topical medication to kill the fleas, she also prescribes antibiotics to kill the bacteria in the sores. Which sentence BEST explains how these bacteriI were able to infect the poor dog?
A. The bacteria were epiparasites that were living inside the fleas and then transferred to the dog when the fleas bit him.
B. The bacteria were left behind when the fleas hatched from their eggs and embedded into the dog's skin.
C. The fleas' bites caused itching, leading the dog to scratch the skin and break the surface, providing a home for bacteria.
D. The antibiotics are being given to kill the bacteria, which is the larval stage of the fleas.
A line graph has a vertical axis labeled "Average plant height (cm)" and a
horizontal axis labeled "Fertilizer (g/plant)." What information is conveyed by
a point plotted with the coordinates (1, 25)? Keep in mind coordinates are
written as (x-coordinate, y-coordinate).
60
40
Average plant height (cm)
30
10
Fertilizer (g/plant)
A. The average height of plants given 1 g of fertilizer was 25 cm.
B. The range of fertilizer was from 1 g per plant to 25 g per plant.
1
оооо
C. The average height of plants given 25 g of fertilizer was 1 cm.
D. The range of average plant height was from 1 cm to 25 cm.
Answer:
A. The average height of a plant given 1 g of fertilizer was 25 cm.
Explanation:
Which of the following is not a function of a vacuole ?
a) to absorb water
b) to store ions
c) to store waste products
D) to make protien
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Ans :- A