The photo shows "watermelon snow" in Antarctica, caused by a species of photosynthetic green algae that thrives in subzero temperatures (Chlamydomonas nivalis). These algae are also found in high altitude year-round snowfields. In both locations, UV light levels tend to be high. Based on what you learned in this chapter, propose an explanation for why this photosynthetic alga appears reddish-pink.

Answers

Answer 1

The photosynthetic alga appears reddish-pink due to the production of pigments, such as astaxanthin, as a protective mechanism against high levels of UV light in both Antarctica and high altitude snowfields.

The reddish-pink appearance of the photosynthetic alga in Antarctica and high altitude snowfields can be attributed to the production of specific pigments, such as astaxanthin. These pigments serve as a protective mechanism against the damaging effects of high levels of UV light.UV light can be harmful to organisms as it can induce oxidative stress and damage cellular components. In response, certain algae, including Chlamydomonas nivalis, synthesize pigments like astaxanthin, which act as natural sunscreens.

Astaxanthin absorbs UV light, particularly in the higher energy range, and dissipates it as heat, protecting the algal cells from harmful radiation.

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Related Questions

seals in an aquarium will repeat certain behaviors, such as slapping and barking, that prompt people to toss them a herring. this best illustrates:

Answers

In an aquarium, seals will repeatedly exhibit actions like slapping and barking that cause people toss them a herring. This is an example of operant conditioning.

What is operant conditioning?

Operant conditioning, often known as instrumental conditioning, is a teaching strategy that use rewards and penalties to alter behavior. Through operant training, actions that are rewarded are more likely to be repeated than actions that are penalized.

Over the past 60 years, the practice of training animals with positive reinforcement has grown in popularity. It gave rise to the training methods used today, where the animals assist with their own care and show visitors their natural behaviors. Operant conditioning is a type of training where the seals' actions are altered by positive reinforcement, increasing the likelihood that they would repeat the behaviour when requested.

We employ a number of reinforcements when working with seals, but the most well-liked is a fish snack. Trainers also offer games and even cubes of gelatin. A seal receives a fish as compensation for complying with a command. The trainers will wait a short while before trying again if the seal doesn't comply with their instructions.

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Which renewable energy resource comes from burning plant material.

Answers

Answer:

Biomass

Explanation:

Biomass is renewable organic material that comes from plants and animals. Biomass was the largest source of total annual U.S. energy consumption until the mid-1800s. Biomass continues to be an important fuel in many countries, especially for cooking and heating in developing countries

during the denaturation of ribonuclease, which level of protein structure was maintained?

Answers

Which degree of protein structure been preserved throughout ribonuclease's denaturation. All that was kept was the basic protein structure. Its form determines how a protein works. Because of this, some proteins may not function as they should.

What exactly does denaturation entail?

In biology, the process of denaturation involves changing a protein's molecular structure. The process of denaturation entails the splitting of many of the insufficient linkages, or bonds, within a protein complex that are in charge of the protein's highly ordered structure in its native (natural) state. These weak linkages or bonds include hydrogen bonds, for example.

What does denaturation look like?

Some of a food's proteins denature during cooking. This is the reason that cooked meat firms up and boiled eggs become hard. Egg whites, which are normally primarily egg albumins in water, are a classic illustration of proteins becoming denaturized.

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Animal cells are considered eukaryotic and bacteria cells prokaryotic. This is because:.

Answers

Answer: This is because animals (like humans) have more organelles to store in our bodies than bacteria. This makes sense because without all of our organelles we wouldn't be able to function properly. This is just another one of those form=function things.

-AnaMae10

Answer:

eukarytic cells have a cell wall and prokaryotic have just a membrane also they do not have a true nucleus.

Explanation:

Which topic do biologists ask questions about and study using scientific methods?
A)Planets and stars
B)The meaning of existence
C)Living things and the environment
D)The value of science

Answers

Answer:C

Explanation:

Answer: C. Living things and the environment

Explanation: It's correct!

Why does having a genetically diverse population make a species more likely
to survive a change to the environment?
A. They are more likely to have harmful mutations.
B. They are more likely to become an invasive species.
C. They are more likely to reach carrying capacity.
D. They are more likely to have some individuals adapted for survival.

Answers

Answer:

D

Explanation:

When a population is genetically diverse there is a higher probability for some individuals in that population to survive during harsh conditions such as drought due to their highly resistant genes.

4. What two energy sources is produced by
Renewable and Non-renewable Sources?
Hurry quickly please!!!

Answers

Answer:

Renewable resources: timber and wind

Explanation:

nonrenewable resources: coal and natural gas

when a nurse draws blood, it is not uncommon for the needle to penetrate which muscle near the cubital region?

Answers

Answer:

pronator teres

Explanation:

PRONATOR TERES

(Just finished my exam)

Enzymes influence chemical reactions in living systems by
a. Combining with excess hydrogen to form gaseous wastes
b. Affecting the rate (speed) at which reactions occur
c. Providing the substrate required for the reaction to occur
d. Absorbing water released when polymers are formed

Answers

Answer:

I think its b. affecting the rate at which reactions occur

which group of organisms represents the outgroup in the clade that includes only crocodilians, ornithischian dinosaurs, saurischian dinosaurs, and birds?

Answers

Archosaurs are a group of organisms that belong to the same clade that is Dinosauria.

There is abundant evidence that birds developed within the clade Dinosauria, which is broken down into two groups, dinosaur hips (Saurischia) and bird hips (Ornithischia). Despite the names, it wasn’t bird-hipping dinosaurs that created modern birds. Instead, Saurischia split into two groups: one that included long-necked, herbivorous dinosaurs like Apatosaurus, and the second group that gave rise to birds as bipedal predators known as theropods.

There are many similarities between late (maniraptoran) dinosaur fossils and birds, particularly in the structure of hip and wrist bones and the presence of a wishbone formed by the fusion of clavicles.

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explain why a transparent epidermis is an adaptation for photosynthesis

Answers

Answer: A leaf’s upper epidermis is generally transparent that allowing the light to enter the leaf.

PLEASE HELP
What is a limiting layer and what does it prevent?

Answers

Answer:

The lower limit of the zone of suitable soil is defined as the limiting zone. The limiting zone is any layer that prevents proper treatment of wastewater. Such a layer causes very slow (or very fast) movement of water through the soil profile

may this help u

What is the
purpose of
alveoli?
A. They warm air and dissolve gases to be put into
the blood stream.
B. They transport air from the trachea to the
bronchioles.
C. They make sound as air passes over them.
D. They filter the air coming into the body.

Answers

B. They transport air from the trachea to the bronchioles

in an experiment, frog’s eggs were placed in a salt solution. after several hours their mass increased significantly. we can therefore conclude that, compared to the frog’s eggs, the solution was

Answers

Based on the observation that the mass of frog's eggs increased significantly after being placed in a salt solution for several hours, we can conclude that the solution was hypertonic.

A hypertonic solution has a higher concentration of solutes than the solution inside the cells, causing water to move out of the cells and into the surrounding solution by osmosis.

This can lead to an increase in mass of the cells as they take up more solutes from the surrounding solution to maintain homeostasis.

In the case of the frog's eggs, the salt solution likely caused water to move out of the cells, leading to an increase in mass as the cells took up more salt to balance the concentration gradient.

This experiment can be used to study the effects of different solutions on cellular osmosis, and is a common technique in biological research.

In summary, the significant increase in mass of frog's eggs after being placed in a salt solution suggests that the solution was hypertonic, with a higher concentration of solutes than the solution inside the cells.

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Please help me fr !!

Please help me fr !!

Answers

Answer B, cause there is no BB there is only 2Bb and there is only 2bb

A snake that eats a frog that has eaten a insect that fed on a plant is a:

a - second level producer
b - first level consumer
c - first level producer
d - third level consumer

Answers

Answer:

Ok,

If you are asking for the snake, then - third level consumer

If you are asking for the frog ,then - second-level consumer

If you are asking for the insect ,then - first-level consumer

And for plant - first level producer

Hope it helps!

Which statement besisummarizes how viruses cause disease
A Viruses use cell parts for nutrients
B. Viruses reproduce best in warm, moist environments
C. Viruses use living cells to make new viruses
D Viruses absorb nutrients from another organism's body

Answers

The answer is C - have a good day!

What was the cause of Dede's condition?

Question 1 options:

only a bacteria infection


bacteria infection plus immune system issues


only a virus infection


virus infection plus immune system issues

Answers

Who is Dede and what are her symptoms. We need more context

according to biological theories, the basic determinants of human behavior may be inherited. select one: true false

Answers

The given statement," According to biological theories, the basic determinants of human behavior may be inherited," is True because according to biological theories, human behavior may be influenced by inherited factors such as genetics, hormonal imbalances, and brain chemistry.

This perspective, often referred to as biopsychology or behavioral neuroscience, suggests that the biology of the brain and nervous system underlies all behavior, including human behavior. This includes the genetic and neurological factors that contribute to the development of individual differences in temperament, personality, and other psychological traits that shape behavior. However, it is important to note that biological factors are not the only determinants of behavior, as environmental and social factors also play a role

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What processes can transform metamorphic rock into sediment? question 3 options: weathering and erosion heat and pressure compaction and cementation crystallization and solidification

Answers

Metamorphic rocks are rocks that are formed as a result of heat and pressure. These rocks can be broken down into smaller pieces and turned into sediments by the process of weathering and erosion.

Therefore, the processes that can transform metamorphic rock into sediment are weathering and erosion.Weathering is the process by which rocks are broken down into smaller pieces by physical, chemical, and biological processes. Physical weathering occurs when rocks are broken down by mechanical forces such as wind, water, and ice. Chemical weathering occurs when rocks are broken down by chemical reactions with water, air, or other substances. Biological weathering occurs when rocks are broken down by the actions of living organisms such as plants, animals, and bacteria.

Erosion is the process by which sediments are moved from one location to another by wind, water, or ice. This process can occur naturally or be caused by human activities such as mining, construction, and farming. Erosion can also occur as a result of natural disasters such as floods, landslides, and hurricanes.

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A student is using the high-power objective lens of a compound light microscope to look at a micro-organism. The image the student sees is out of focus. What should the student do to focus the image?

Answers

The student should use the fine adjustment knob to focus the image

how do you convert 0.00000032 into scientific notation?​

Answers

Answer: 3.2 x 10^ -7

Explanation: move the decimal until there is one number in front of the decimal and then count how many places you moved the decimal and because it becomes a smaller number, the exponent is negative

0.00000032 in scientific notation is 3.2 x 10^(-8).

To convert 0.00000032 into scientific notation, you can follow these steps:

1. Identify the non-zero digit: In this case, the non-zero digit is 3.

2. Count the number of decimal places to the right of the non-zero digit: In this case, there are 8 decimal places to the right.

3. Write the non-zero digit followed by a decimal point: 3.

4. Write the remaining digits without the leading zeros: 2.

5. Multiply the result by 10 raised to the power of the number of decimal places: 3.2 x 10^(-8).

Therefore, 0.00000032 in scientific notation is 3.2 x 10^(-8).

In scientific notation, the number is expressed as a decimal number between 1 and 10 multiplied by a power of 10. This allows us to easily represent very large or very small numbers in a compact and standardized format.

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Which organisms are likely to inflict pain on you?

Answers

Yes like the other person said leeches are most likely

Answer:

I say leeches and spiders they are the most likely inflict pain to me .

how many chromosomes will en egg cell of the weed have?​

Answers

Answer:

Since the gametes are formed as a result of meiosis, therefore, each gamete that is sperm cell and egg cell will have 28 chromosomes each.

Explanation:

Testing the deep tendon reflexes gives the examiner information regarding the intactness of the?

Answers

Testing the deep tendon reflexes gives the examiner information regarding the intactness of the: reflex arc at specific levels in the spinal cord.

Tendon reflexes are associated with muscle tension and also known as muscle stretches or reflexes are a feedback mechanism.

Deep tendon reflexes are categorized as bicep, triceps, brachioradialis, ankle, and patellar.

Each reflex is associated with a particular muscle or root and also analysis the integrity of the roots and connected nerves.

A finger reflex or bicep is an excellent example of reflex activity.

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Steven pushes a crate across a warehouse floor. If the crate moves at a constant speed in a straight-line path, which statement is true according to Newton's first law of motion? The force that Steven applies is greater than the force of friction between the crate and the warehouse floor. The net force acting on the crate is zero. The crate is in static equilibrium. Zero net force is required to change the crate's state of motion.

Answers

Answer:B

Explanation:THE NET FORCE ACTING ON THE CRATE IS ZERO.

Answer:

The net force acting on the crate is zero.

Explanation:

Steven pushes a crate across a warehouse floor. If the crate moves at a constant speed in a straight-line

What are non-phathogenic bacteria ​

Answers

organisms are those that do not cause disease, harm or death to another organism and is usually used to describe bacteria. It describes a property of a bacterium - its ability to cause disease. ... A particular strain of bacteria can be nonpathogenic in one species but pathogenic in another.

because genetic information is transmitted from one generation to the next which of the following is observed?

Answers

As genetic information is transmitted from one generation to the next, the fact which is observed is that, more than 100 genetic disorders result from genetic mutations. A genetic mutation is a change in the sequence of DNA in a gene, which affects the gene's final product.

Genetic mutations can be inherited or acquired throughout a person's lifetime.The genetic material that determines an individual's characteristics is contained in the DNA of the chromosomes. In every cell of a person's body, except red blood cells, there are 46 chromosomes arranged in 23 pairs. Each pair of chromosomes contains genes that are responsible for various traits or characteristics.There are more than 100 genetic disorders that result from genetic mutations. Some examples include sickle cell anemia, cystic fibrosis, and Huntington's disease.

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During which process is oxygen gas released into the atmosphere?

Answers

Answer:

photolysis

Explanation:

it happens when the uv radiaiton of sunlight breaks apart the oxygen containg molecules.

a specific genetic trait is selected against. what will be the likely impact on an individual possessing this trait?a. Nothing, traits are only selected "for". O b. Increased chance of survival. c. Decreased chance of survival. O d. The gene will be excised using nucleases.

Answers

Option C is correct.

A trait is a characteristic that is determined by an individual's genes, which are segments of DNA that carry instructions for building and maintaining the body.

Some genetic traits are selected "for" by natural selection because they increase an organism's chances of survival and reproduction, while others may be selected against because they decrease an organism's fitness.

Option (c) "Decreased chance of survival" is the likely impact on an individual possessing a genetic trait that is selected against. This means that the organism carrying the trait may be less likely to survive and reproduce compared to individuals without the trait.

For example, if a genetic trait causes a structural defect in an organism that impairs its ability to move or obtain food, then the organism may be at a disadvantage compared to others without the trait.

Over time, individuals without the trait may be more successful at surviving and reproducing, leading to a decrease in the frequency of the trait in the population.

It's important to note that not all traits that are selected against are completely eliminated from a population. Some traits may persist at low frequencies, especially if they are not strongly linked to other traits that are advantageous or if they confer some other benefit that outweighs the costs.

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Other Questions
What two laws were passed during Wilsons administration that helped regulate big business? what are the purpose and the message of the text? explain activities you and ur friend spend the day essay You will implement an external sorting algorithm for binary data. The input data file will consist of many 4-byte records, with each record consisting of two 2-byte (short) integer values in the range 1 to 30,000. The first 2-byte field is the key value (used for sorting) and the second 2-byte field contains a data value. The input file is guaranteed to be a multiple of 4096 bytes. All I/O operations will be done on blocks of size 4096 bytes (i.e., 1024 logical records).Your job is to sort the file (in ascending order), using a modified version of Quicksort. The modification comes in the interaction between the Quicksort algorithm and the _le storing the data. The array being sorted will be the _le itself, rather than an array stored in memory. All accesses to the file will be mediated by a buffer pool. The buffer pool will store 4096-byte blocks (1024 records). The buffer pool will be organized using the Least Recently Used (LRU) replacement scheme.Design Considerations: The primary design concern for this project will be the interaction between the array as viewed by the Quicksort algorithm, and the physical representation of the array as implemented by the disk file mediated by the buffer pool. You should pay careful attention to the interface that you design for the buffer pool, since you will be using this again in Project 4. In essence, the disk file will be the array, and all accesses to the array from the Quicksort algorithm will be in the form of requests to the buffer pool for specific blocks of the file.The data file is the file to be sorted. The sorting takes place in that file, so this program does modify the input data file. Be careful to keep a copy of the original when you do your testing. The parameter determines the number of buffers allocated for the buffer pool. This value will be in the range 1-20. The parameter is the name of a file that your program will generate to store runtime statistics; see below for more information.At the end of your program, the data file (on disk) should be in a sorted state. Do not forget to use buffers from your buffer pool as necessary at the end, or they will not update the file correctly. Why was there a rise of reform movements in the mid-1800s? What kinds of social problems did these movements try to address?In a historical paragraph what makes the most practical sense to measure pressures realative to speech production Heed help Why do you think sky objects on a celestial sphere appear to move when an observer views the objects from Earth? Because inside the celestial sphere, the Earth rotates on its axis. Because inside the celestial sphere, all planets are present. 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What is the molarity of the potassium hydroxide?