When Engelmann exposed photosynthetic algae to light in the presence of aerobic bacteria, he found that some wavelengths of light produced a higher rate of photosynthesis, as evidenced by the number of bacteria gathered near the algae. Based on his results, what color of light did Engelmann find associated with the highest rate of photosynthesis?

A. Red and blue
B. Yellow and green
C. Yellow
D. Red

Answers

Answer 1

Answer:

A. Red and blue

Explanation:

Theodor Wilhelm Engelmann, born in 1843 and died in 1909, was a German scientist. He was the scientist who detected which wavelengths of light produced the best photosynthetic activity in green alga. In his experiment, Engelmann exposed the photosynthetic algae to different wavelengths in the light spectrum. He then added aerobic (oxygen-dependent) algae to see where they will accumulate the most in order to detect the best wavelength for algae photosynthesis.

He discovered that the aerobic bacteria accumulated in the parts of the algae exposed to red and blue wavelength of light. This is because the algae exposed to the red and blue light produced more oxygen due to increased photosynthetic rate. This attracted the aerobic bacteria, which needs oxygen, to that particular area with that wavelength.


Related Questions

Which of the following is an example of chemical energy?
Heat given off by a light bulb,
A windmill spinning
Electrons moving in an electrical circuit
Energy in an apple that a worm eats,

Answers

Hear given off by a light bulb because heat is a sign of a chemical reaction

Identify the large brown tectonic plate and whether it is oceanic or continental

Answers

Option and image is not provided in the question. So the image is attached below and complete question is as following:

Identify the large brown tectonic plate and whether it is oceanic or continental?

A. Eurasian, continental B. South American, oceanic C. African, oceanic D. North American, continental

Answer:

D. North American, continental

Explanation:

Tectonic plates are defined as the region or area of the Earth's crust and uppermost mantle, that is present far below the sea around the world.

The given image shows that  the large brown tectonic plate is North America and it is continental plate because it lie under surface land masses.

Hence, the correct answer is D. North American, continental .

Answer:

The answer is D because the plate is not touching the water and is the north American

Explanation:

Which of the following are ways that humans benefit from biodiversity?


Choose all that apply:

Reduced risk of flooding

Food harvested from ecosystems

Raw natural materials, such as wood or rubber

Pollination of crops

Recreation

Medicines derived from plants

Answers

Answer: to be honest I would click all

Explanation: Humans benefit from biodiversity as a source of food, medicine, and raw materials. Biodiversity ecosystems provide benefits to humans, like cleaning water or pollination of crops. ... Marine ecosystems store large amounts of carbon.

Human gets benefits from biodiversity such as food material, pollination of crops, medicines, etc. Hence, all options are correct.

What is biodiversity?

Biodiversity refers to the varieties of flora, fauna, fungi, bacteria, and all types of microorganisms in our ecosystem. There are billions of species of organisms present on the earth. The highest biodiversity is found in the ocean.

There are many benefits of biodiversity such as the risk of flood reduction because plants stop erosion, food produced by the producers, pollination of crops by pollinating agents, recreation, and raw natural materials like wood, vegetables, spices, and medicines derived from plants.

Human gets all these benefits from biodiversity. Therefore, all options are correct.

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A forest fire in Florida clears thousands of acres of trees. What is the most likely consequence for the animal populations in the surrounding area?

Answers

Answer:

Explanation:

they would die or suffer

Select the correct answer from each drop-down menu.
The image shows the path of a ball that’s thrown.
At positions (A,B,C, or D) and (D,E,F, or G), kinetic energy is maximum. At position (B,C,D,or E), potential energy is maximum.

Answers

At position (A) and (G), kinetic energy is maximum. At Position (D), potential energy is maximum.

At point A and G kinetic energy will be maximum while Potential energy is maximum at point D.

Kinetic energy (KE) is initially provided to the ball while it is still in contact with the throwing hand. Once the ball leaves the hand there is no input of energy. As the ball rises the KE is transformed to gravitational potential energy (GPE). This GPE is effectively stored in the height of the ball.Now, when the ball falls back to the ground its potential energy is transformed into kinetic energy, which will continue increasing as it gains momentum, until it finally collides with a surface.

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What is shown in the diagram?
an electromagnet
a generator
a motor
a turbine

Answers

Answer:

an electromagnet

Explanation:

An electromagnet :)

10. Which describes products that help people meet needs or solve problems?
models
feedback
.
technology
science

Answers

Science because there is a reason behind everything

Design     models ig idk

(◕‿◕✿)

What types of substances are considered drugs?​

Answers

Answer:

stimulants (e.g. cocaine)

depressants (e.g. alcohol)

opium-related painkillers (e.g. heroin)

hallucinogens (e.g. LSD)

Which type of tissue carries messages?
A. Nervous tissue
B. Connective tissue
C. Muscle tissue
D. Epithelial tissue
SUBN

Answers

Answer:

Nervous tissue

Nervous tissue is responsible for carrying messages throughout the body. It is made up of specialized cells called neurons, which are able to transmit electrical signals. These signals allow the body to respond to stimuli and coordinate its movements. Hence option A is correct.

Connective tissue provides support and structure to the body. It is made up of cells that are embedded in a matrix of fibers. The fibers can be made of collagen, elastin, or other proteins. Connective tissue can be found in many different parts of the body, including the bones, muscles, and skin.

Muscle tissue is responsible for movement. It is made up of cells that can contract and relax. There are three types of muscle tissue: skeletal muscle, smooth muscle, and cardiac muscle.

Skeletal muscle is attached to bones and is responsible for voluntary movement. Smooth muscle is found in the walls of internal organs and is responsible for involuntary movement. Cardiac muscle is found in the heart and is responsible for pumping blood.

Epithelial tissue covers the body and lines internal organs. It is made up of cells that are tightly packed together. Epithelial tissue protects the body from infection and helps to regulate body temperature.

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A wave with a height of 5 feet and a wavelength of 15 feet has a wave base of __

Answers

Answer:

The answer is 7.5 feet.

Explanation:

When a wave has a height of 5 feet and a wavelength of 15 feet then it has a wave base of 7.5 feet. Wave base is equal to the half of the wavelength so if you consider your wavelength to be 15 feet then it is divided into 2 that would give you answer of 7.5 feet.

I hope I helped, please correct me if I'm wrong!

Which of the following means a hormone that aids in growth of gonads?
Glycogenesis
Thyrotoxic
Pancreatitis
Gonadotropin

Answers

Answer:

thyrootoxic

Explanation:

The hormone which aids in the growth of gonads  is Gonadotropin. The correct option is gonadotropin.

Gonadotropins are  defined as the hormones which  play an important  role in the growth and development of gonads. The gonads refer to the male and female reproductive organs, such as the testes and ovaries. Gonadotropins stimulate the production of sex hormones and even  regulate the reproductive processes. These homones are essential for the normal functioning of the reproductive system.

Gonadotropins are  classified as glycoprotein hormones  which are secreted by gonadotropic cells of the anterior pituitary which is present in vertebrates.This family includes the mammalian hormones follicle-stimulating hormone (FSH) and luteinizing hormone (LH), the chorionic gonadotropins, human chorionic gonadotropin (hCG) and equine chorionic gonadotropin (eCG),as well as at least two forms of fish gonadotropins.

Thus, the correct option is gonadotropin.

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What type of consumer is the hawk

Answers

A hawk is a primary consumer

Explanation:

Hawk are secondary or tertiary consumers in a food chain. This means that they eat primary and other secondary consumers.

Hope this helps..

Write one scientific question about the organism in the photo.

Answers

Answer:

Please attach the photo of the organism.

Explanation:

As the trait is dominant and controlled by a single gene, the mutation must have occurred on both
diploid copies. True or false?

Answers

The answer is false.

A student is examining leaf cells. Which organelles are most likely to be missing from the cells?
A. ribosomes
B. chloroplasts
C. lysosomes
D. mitochondria

Answers

The answer is C. Lysosomes

Answer:

C.) lysosomes

Explanation:

All the other listed organelles are found in plant cells. But lysosomes are sometimes not included.

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(If helpful)

Describe the distribution of earths surface water

Answers

Answer:

b

Explanation:

in the phylogenetic tree shown here, which of the following loci represents an ancestor shared by species 1 and 2 but not by species 3?

A. C
B. A
C. B
D. D

Answers

Answer choice B —> A

What kind of banded rock is formed by cavities in rocks left by gas bubbles?

A. Fossils
B. Marble
C. Agates

Answers

I believe this is agates I’m not quite sure though
agates
hope this is correct :)

What science aims to discover solutions to practical problems?

Answers

Answer:

The aim of applied science is to find solutions to practical problems

The aim of applied science is to find solutions to practical problems or  science aims to discover solutions to practical problems.

What is natural science?

Natural science is the branch of science that deals with the study of natural events, based on experimental proof from research and experimentation. Earth and space science is the study of the Earth, oceans, land, solar system and atmosphere. it covers all fields of the natural science that are associated with the Earth planet.

Life science is the life sciences include the parts of science that include the scientific understanding of living organisms and life( plants, animals , microbes and human beings and physical science as it deals with studies of non-livings things.

Knowledge management approach focuses on making best use of the knowledge with the intent of achieving organisational objectives. It involves discovering, sharing and harnessing of the intellectual resources that a company holds.

Therefore, The aim of applied science is to find solutions to practical problems or  science aims to discover solutions to practical problems.

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Which field of study would be most useful for a person who wants to help preserve a wetland?

Answers

Wetlands biologists study, manage and protect wetlands environments, including plant and animal life.
Wetlands Biologists study the life and conditions of life that exist within wetlands - both plant and animal.

where can the DNA of bacteria be found​

Answers

Answer:

The DNA of most bacteria is contained in a single circular molecule, called the bacterial chromosome. The chromosome, along with several proteins and RNA molecules, forms an irregularly shaped structure called the nucleoid. This sits in the cytoplasm of the bacterial cell.

VERY EASY QUESTION. WILL MARK BRAINLIEST

When two mechanical waves have a displacement in opposite directions, and they overlap, what will the resulting wave look like and why?

The new wave will have the same displacement as the original waves due to constructive interference.

The new wave will have a smaller displacement than either of the original waves due to destructive interference.

The new wave will have a greater displacement than either of the original waves due to constructive interference.

The new wave will have the same displacement as the original waves due to destructive interference.

Answers

The new wave will have the same displacement as the original waves due to constructive interference.
ANSWER:
It is option b)
The new wave will have a smaller displacement than either of the original waves due to destructive interference.
HOPE IT HELPS!!!!!
PLEASE MARK BRAINLIEST!!!!

Which of the following factors will most likely limit the light-dependent reactions of photosynthesis?

A. Light intensity and light quality
B. Temperature and light intensity
C. Carbon dioxide concentration and light quality
D. Carbon dioxide concentration and temperature

Answers

The answer is b because you need light

Answer:

C

Explanation:

L 2.2.4 Quiz: Translation
Which amino acid chain will be formed by the codons shown below?
GUC CUU CCG
Messenger
Second base in codon
RNA Codons U
c
A
G
UUU UCU UAU UGU
UUC)
Phe
UCC UAC
}Tyr
UGC)
Cys
с
U
Ser
UUA
Leu
UCA
UAA Stop UGA Stop A
UUG UCG
UAG Stop UGG Trp G
CUU CCU CAU CGU
U
CUC CCC
His
CAC CGC
Leu Pro
CUA CCA CAA
Gin
CGA
CUG CCG CAG CGG
AUU ACU AAU
Asn
AGU
AUC
Ser
lle ACC AAC) AGC
A
Thr
AUA ACA AAA
AUGStart Me ACG
Lys
AGA
AAG) AGG
Arg
GUU GCU GAU GGU
GUC GCC
Asp
GAC, GGC
G
Val
с
Ala
GUA GCA GAA
Gly
Glu
GGA
GUG GCG GAG) GGG
Arg
First base in codon
POCO POCO POCO 20co
Third base in codon
O A. Leu His Ser
O B. Val Leu Pro
O C. Pro Val Pro
O D. Val Pro Pro

Answers

Answer:

uuu ucu uau ugu uuc) phe ucc uac }tyr ugc) cys

Answer:

The answer is Val Leu Pro

Mutations that neither benefit nor harm the organism have _________ effect on the organism's survival.


A. a positive


B. a negative


C. an aggressive


D. a neutral

Answers

The answer is D. A neutral

Answer:

Its neutral!

Explanation:

1.Explain the kingdom of protozoa and fungi
note that they are different kingdom
2.Explain the difference of bacteria and virus

Answers

Answer:

Explanation:

Kingdom Protozoa, as defined in this scheme, does not form a natural group or clade, but a paraphyletic group or evolutionary grade, within which the members of Fungi, Animalia and Chromista are thought to have evolved.

what did the results of the experiment show​

Answers

What experimemt is it?


Jada wants to eat a meal that will sustain her energy during a long run. Which of these food items is the best source of long-
term energy?

Answers

Answer:

So what my teacher told me is we should eat apple and chicken and stuff because u burn off the calories and it make u run faster dont forget water

Explanation:

Answer:

Well you got many....

1) Bananas

2)Fatty Fish

3)Sweet Potatoes

4)Eggs

5)Brown Rice

Explanation:

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Which is not a basic function of a cell? A. Breaking down molecules B. Making macromoleclues for an organism C. Maintaining a stable external environment D. Removing waste from the cell

Answers

Answer:

D. Removing waste from the cell

Explanation:

Hope it helped mark me brainliest

Answer:

maintaining a stable external environment.

Explanation: I just did it

What is the difference between sedimentary and metamorphic rock?

Answers

Metamorphic are formed through change underground sedimentary are formed through sediment
Sedimentary rock is formed from sediments that have gone through weathering, erosion, Depposition, compaction and cementation. Metamorphic rock is a igneous, sedimentary or metamorphic that has been changed through heat and pressure
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