A researcher designs an experiment to investigate whether soil bacteria trigger the synthesis of defense enzymes in plant roots. The design of the experiment is presented in Table 1. For each group in the experiment the researcher will determine the average rate of change in the amount of defense enzymes in the roots of the seedlings Table 1. An experiment to investigate the effect of soll bacteria on plant defenses Group Number of Seedings Type of Soil Treatment Solution 1 10 Sterlepotting sol Contains actively reproducing soll bacteria 2 10 Sterile potting sol Contains heille soll bacteria 3 10 Sterle porting soil Contains no bacteria Which of the following statements best helps justify the inclusion of group 2 as one of the controls in the experiment? A) I will show whether the changes observed in group 1 depend on the metabolic activity of Boll bacteria B) will show whether the changes observed in group 1 depend on the type of plants used in the experiment. C) It will show the average growth rate of seedings that are maintained in a nonsterile environment D) I will show the changes that occur in the roots of seedlings following an infection by soll bacteria.

Answers

Answer 1

Among the given statements (A) "I will show whether the changes observed in group 1 depend on the metabolic activity of Boll bacteria" best helps justify the inclusion of group 2 as one of the controls in the experiment.

In this instance, soil bacteria that were destroyed by heat are being employed to ascertain if the creation of enzymes by the plant is aided by the bacteria's metabolic products or just their physical form. Because the outcomes of these types of tests occasionally depend on the metabolic interactions between the pathogen (bacteria) and the host, this is a very helpful control (the plant). So, (A) is the right option.

You can also learn about enzymes from the following question:

https://brainly.com/question/14953274

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Related Questions

50 POINTS !!!!A credit union is a business that is owned by people who have something in common, offers you a place to keep your money, and uses your funds to make more money. A. True B. False

Answers

Answer:

true

Explanation:

Hope this helps

Answer:

The anser is FALSE

Explanation:

I just took the test and it was FALSE

The largest endocrine gland (s) that makes 3 hormones that affect the metabolism is the: *
A. pituitary gland
B. thyroid gland
C. pancreas
D. adrenal gland

Answers

Answer:

The largest endocrine gland (s) that makes 3 hormones that affect the metabolism is the: thyroid gland.

The largest endocrine gland that makes three hormones that affect metabolism is the Pancreas. Thus, the correct option for this question is C.

What do you mean by Endocrine Gland?

An endocrine gland may be defined as a type of gland which consists of several organs that make hormones and release them directly into the blood so they can travel to tissues and organs all over the body. These hormones control many important functions in the body, including growth and development, metabolism, and reproduction.

The pancreas is the largest endocrine gland that significantly makes three hormones namely, Insulin, Glucagon, and Somatostatin. These hormones are actively involved in the regulation of metabolism by numerous mechanisms.

For example, insulin lowers the level of sugar in the blood, while glucagon increases the level of sugar by transforming its storage form.

Therefore, the largest endocrine gland that makes three hormones that affect metabolism is the Pancreas. Thus, the correct option for this question is C.

To learn more about Endocrine glands, refer to the link:

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What can be concluded from the graph?
The layers of Earth have different densities.
O P and S waves are absorbed in the core.
The layers of Earth do not have distinct boundaries.
O Pand S waves always originate in the mantle and travel through the core.

Answers

Answer:

Explanation: second option

What is the primary source of energy for all food chains?

Answers

Answer:

sunn

Explanation:

this is my alt acc

Which three statements describe events in the formation of an ecosystem in
a new pond?
O A. Algae and plants grow in the water, and small organisms eat
them.
B. Soil fills in the pond, and it no longer holds standing water.
C. Runoff carries water and organisms into a low place on land.
D D. Sunlight reaches the bottom of the pond.

Answers

Answer:

A C and D

Explanation:

its a new pond its not filled with soil.

Answer:

its A,C, and D

Explanation:

i just took the test and got it right

Which is one way that DNA replication is similar in eukaryotic cells and prokaryotic cells?

a number of replication forks
b use of the enzyme DNA polymerase
c occurs in the cell nucleus
d occurs in the cytoplasm

Answers

a number of replication forks
It’s A because of the replication in 5’ to 3’ direction The single strand binding proteins stabilize the unwound DNA

Question 2 (1 point)
Which two vocabulary words are synonyms (meaning similar things)?
a
revolution
b
orbit
c
latitude
rotation

Answers

Answer:orbit and rotation

Explanation:

Which structure is represents a ribosome

Answers

Answer: I'm not sure what the question is, given there aren't any images provided to choose from, but a ribosome looks something like the picture I attached. Good luck!

Explanation:

Jim observes that his pet lizard is more active on warm, sunny days than at night or during rainy days.
Which statement is the most valid hypothesis he can make from this observation?
Lizards are more active when they feel more comfortable.
Lizards like warm temperatures.
O If the temperature increases, then lizards become more active.
If the lizard is active, then the temperature must be cool.

Answers

Answer:

If the temperature increases, then lizards become more active.

Explanation:

What cell parts are common to all of these cells?
Use complete sentences.

Chlamydomonas
Spirogyra
Elodea
Squamous Epithelium

Answers

Answer: All cells share four common components: (1) a plasma membrane, an outer covering that separates the cell's interior from its surrounding environment; (2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; (3) DNA, the genetic material of the cell; and (4). The cells of most Chlamydomonas species are more or less oval and feature a noncellulosic membrane (theca), a stigma (eyespot), and a usually cup-shaped chloroplast. Although photosynthesis occurs, nutrients also may be absorbed through the cell surface. Asexual reproduction is by zoospores.  The filamentous masses come to the surface and become visible as slimy green mats. Spirogyra has a cell wall, nucleus, pyrenoid and spiral chloroplasts.  This Elodea leaf cell exemplifies a typical plant cell. It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. The numerous green chloroplasts allow the cell to make its own food (by photosynthesis). The central vacuole takes up most of the volume of the cell. Squamous cells tend to have horizontally flattened, nearly oval-shaped nuclei because of the thin, flattened form of the cell. Squamous epithelium is found lining surfaces such as skin or alveoli in the lung, enabling simple passive diffusion as also found in the alveolar epithelium in the lungs. brainliest?

Explanation:

*15 points* Earth Science
Based on the picture, how many tilting events has this area undergone, and which principle tells us that this area has undergone tilting?

Answers

Just saying it says 8 points ya little baka

Select the correct answer.
Which type of galaxy is the Milky Way?
A.
elliptical
✓ B.
spiral
C.
irregular
D.
lenticular
Next

Answers

Correct answer is B. Spiral

Explanation:
Answer provided by www.amnh.org

What is natural selection
In a paragraph
This is for 8 grade but can someone help me

Answers

Answer:

Natural selection is a pressure that causes groups of organisms to change over time. Animals inherit their genetics from their parents or ancestors, and the environment is constantly changing.

Explanation:

(self-explanatory)

If the base sequence of a strand of DNA is ATGGGCCTA, what would be the base sequence of the complimentary DNA strand?

Answers

Answer:

TACCCGGAT

Explanation:

Adenine(A) always base pairs with Thymine(T) (except in the case of RNA, in which case A would base pair Uracil(U).

Cytosine(C) always base pairs with Guanine(G).

Help stepbro im stuck in the washer

Answers

Answer:

I'LL HELP YOU......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................NOT

The changes that occurred in Yellowstone National Park after all of its wolves
were killed showed that wolves are
A. harmful to the ecosystem
B. the only producers in the ecosystem
C. beneficial to the ecosystem
a
D. unnecessary for the survival of other species

Answers

C. beneficial to the ecosystem

explain why the concentration of FSH in the blood increases after day 1​

Answers

Answer:

As the levels of FSH and LH in the blood increase with puberty, the eggs begin to mature and a collection of fluid — the follicle — begins to develop around each one. The first day of menses is identified as cycle day one. Estrogen is at a low point. ... This increase in estrogen begins to inhibit the secretion of FSH.

Explanation:

7 reasons plants are important to the environment

Answers

Answer: The House of the Scorpion

Explanation: the first sentence fight for this

Which of the following options best depicts the flow of information when a gene directs the synthesis of a protein?

protein>RNA>DNA

RNA>DNA>RNA>protein

DNA>RNA>protein

DNA>tRNA>mRNA>protein

Answers

Answer:

DNA → tRNA → mRNA → protein.

Explanation:

I believe that the above given option should depict the flow of information when a gene directs the synthesis of a protein.

Explain the differences between Bacteria and Decomposers?​

Answers

Answer: Decomposers like bacteria and fungi don't eat their food, they decompose it externally. Also, decomposers consume nutrients on a molecular level while detritivores eat large amount of decaying material and excrete nutrients. ... In addition to fungi, bacteria are also decomposer organisms. brainliest

Explanation:

Laying eggs belong to which category of energy use? Maintenance, waste production, movement, growth and reproduction

Answers

Answer: it is reproduction

Explanation:

Help ASAP, please
Thank you, Friends:)

Answers

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Select the statement(s) that is accurate about the immune system.

Answers

What’s the statements

An acid-fast staining method was performed on a bacterial smear using the dyes carbol fuchsin and methylene blue. The resulting stained slide contained only cells that appeared blue when visualized using a microscope. Which of the following could explain why only blue cells were present?

a. No acid-fast bacteria are present on the slide
b. Methylene blue was not used
c. Carbolfuchsin was not used
d. Acid-alcohol was not used

Answers

Answer: Only blue cells where present because No acid-fast bacteria are present on the slide. The correct option is A.

Explanation:

Acid fast staining method also called Ziehl-Neelsen (Zn) technique is used in the laboratory to stain samples suspected to contain Mycobacterium species. The Mycobacterium species which includes the M. tuberculosis, M. ulcerans, and M. leprae, do not stain well by the Gram technique, which is a common routine stain in the laboratory. This is because of waxy coating on its cell surface primarily due to the presence of mycolic acid.

The acid fast stain consists of:

--> A primary dye which is the carbol

fuchsin

--> A decolorizer which is the acid alcohol

--> A counter stain which is the methylene blue.

In it mechanism of action on the bacterial smear, when the primary dye is applied,the whole cell will appear red. But after decolorizing with acid alcohol, only acid fast bacteria will retain the red colour of carbol

fuchsin while the red dye from the background cells are removed. Then the counterstain (methylene blue) is applied which is picked up by non-acid-fast bacteria making the cells appear blue under the microscope.

Therefore when the bacteria smear is viewed under the microscope and only blue cells are seen, it means No acid-fast bacteria are present on the slide.

What is not a cause of wind?

Answers

Answer:

can u explain it more I might know the answer

What are the options? If there are none I would say a brick

I need help with this thank you

Answers

Answer:

A).

Explanation:

Universe > Galaxy > Solar Sytem > Earth

the anwser is A. have a good day!

Choose the best answer for the following question:

What kind of information can be gained about an organism from its scientific name?

a
what genus it is
b
what species it is
c
where it lives
d
what genus and species it is

Answers

b what species it is

What is the Definition of Smog?

Answers

Answer:

Smog is air pollution that reduces visibility and can cause harm to people with breathing problems.

Explanation:

Smog is a type of intense air pollution

It is difficult to observe individual chromosomes
with a light microscope during prophase
because
A. The DNA has not been replicated yet
B. They are uncoiled, in long, thin strands
c. They leave the nucleus and are dispersed to
other parts of the cell
D. The spindle must move them to the metaphase
plate before they become visible​

Answers

Answer:

I think the answer is B They are uncoiled, in long, thin strands

Which layer has more density?
Inner Core
Outer Core
Lower Mantle
Upper Mantle

Answers

Answer:

inner core

Explanation:

I looked it up

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which of the following might be expected fiscal policies under a keynesian approach? group of answer choices running a budget deficit. expanding government spending through new projects. government borrowing to fund programs. government control of markets. lowering taxes to increase public spending. cutting both taxes and spending. Please help !!!!!??? Correctly label the following anatomical features of the lymph node. Cortical sinus Germinal center Lymphatic nodule Afferent lymphatic vessels Efferent lymphatic vessel Medullary cord Efferent lymphatic vessel Medullary sinus Afferent lymphatic vessels Which of these statements NOT accurate regarding the city of Timbuktu?ResponsesA It was established under the Songhai empire.It was established under the Songhai empire.B It functioned as a major center of Islamic learning under both the Mali and Songhai empires.It functioned as a major center of Islamic learning under both the Mali and Songhai empires.C Its economic prominence derived in part from its location at the nexus of major land and water trade routes.Its economic prominence derived in part from its location at the nexus of major land and water trade routes.D Its primary trading goods were silks and spices. the formula for the fixed asset turnover ratio equals . multiple choice question. net revenue/total assets net revenue/average net fixed assets net income/average total assets average net fixed assets/total assets What is 1 significant issue with many genetically modified organisms? What do you think was the speakers attitude towards amanda? I need help these problems IF I have 84.107 grams of Hydrogenand 4.672 grams.of watercanof oxygen how many grams.be formed What is the formula for population distribution? What are some of the key benefits of enterprise agile? monitoring the safety of the covid-19 vaccine in the elderly aged 65 years and over is it correct and good? Give the negative (2s complement) of this 8-bit signed quantity: 00101110 which type of photon is emitted when an electron in a hydrogen atom drops from the n=2 to the n=1 How do you tell if a function is positive or negative on a graph? Choose if each statement is True or False. {(2, 2), (3, 2), (4, 2), (6, 2)} is a function: {(-1, 5), (0, 8), (3, 12), (6, 21)} is a function: 5 -10 0 -5 15 -10- 5 0 -5 -10+ 5 5 10 is a function: 10 15 is a function: A fast food chain decides to decrease the size of its soft drink cups by 10%. If the new soft drinkcup holds 27 oz, how much did the original cup hold? choose all eclipsed conformers that result from rotation about the c-2c-3 bond of pentane. Which of the following is NOT produced by meiosis?a. an egg, or ovumb. a liver cellc. a sperm celld. All of the given choices are produced by meiosis. which of the following statements about meridians of longitude are correct?