Biology High School

These photosynthetic protists produce one third of the Earth’s oxygen that is generated through photosynthesis.
paramecia
algae
protozoans
moss

Answers

Answer 1

Answer:

Algae

Explanation:

Answer 2

Answer:

Alge is right got it right so thanks

Explanation:

Related Questions

Help please and thank you!

Answers

Answer:

I think It's the Answer B

Explanation:

Answer:

litter C M phase yan yong nalamanko

Explain how an arrow can represent force.

Answers

Answer:

an arrow could represent the directions in which the force exerted moves towards

A hormone causes specific changes in a body when it a.o attacks invading harmful microorganisms b. delivers chemicals to nerve cells c. arrives at its special target cells d. makes the body's fluids more acidic
Please help me ! ​

Answers

Answer:

The correct answer is C ❤️

ASAP ASAP ASAP I NEED HELP ASAP
Match the term to its description.
Term Definition
Sun A) All existing matter, energy, and space
Star B) An astronomical body that orbits around a planet
Universe C) A sphere of extremely hot plasma held together by its own gravity
Moon D) The center star of our solar system

Answers

I'm sorry this is very late but I'm just going to answer it for those who might need help

Sun: The center star of our solar system

Star: A sphere of extremely hot plasma held together by its own gravity

Universe: All existing matter, energy, and space

Moon: An astronomical body that orbits around a planet

Answer:

Sun = D. The center star of our solar system

Star = C. A sphere of extremely hot plasma held together by its own gravity

Universe = A. All existing matter, energy, and space

Moon = B. An astronomical body that orbits around a planet

Explanation:

what errors that could take place if a cell in m phase and g phase combine

Answers

Answer:

Explanation:

If a cell in the S phase come together and joined with a cell in the G1 phase, the nucleus of the G1 phase will suddenly jumped into S phase and this will result in the synthesis of DNA . If a cell then in the M phase joined with a cell in G1 phase, the nucleus of G1 will undergo mitosis and this will lead to the formation of a spindle and chromatin condensation even when duplication of chromosomes has not occur.

Fossils are preserved remains of previously living organisms or the traces dating from the distant past fossils that have been collected offer unique insight into evolution offer a long time scale however fossils have some limitations select all the limitations of using fossils as evolution evidence

Answers

im srry i need a pic to answer

Answer: There are 3 answers.

1- Plate tectonics causes loss or displacement of fossils.

2- Most organisms never fossilize, leaving holes in the fossil record

3- Because marine fossils are prevalent, this can lead people to believe they were more dominant than they actually were.

Explanation: I have an explanation but i’m not in the mood to type it in. trust me it’s correct

The trilobite fossil represents one of the earliest life forms on the earth and is
now extinct. However, the fossil looks very similar to organisms that you might
see today in an aquatic environment. Describe how fossils can show relationships
between extinct and living creatures.

Answers

All creatures like that a a line between linking them to the ones living today or it’s just evelution

If we use the letter R to represent seed shape, what is the genotype for a heterozygous individual? What is that individual's phenotype?

Answers

Answer:

Explanation:

The genotype for the heterozygous indivdual ( 2 different alleles): Rr

The phenotype would be round.

it would be round im sure

Which taxon includes the most specific characteristics?

Answers

Answer:

Species taxon includes the most specific characteristics.

I hope this might be the answer for ur question ☺️

The most specific characteristics are seen in Species Taxon.

What is Taxon?

Taxon is defined as the unit of taxonomy which are arranged in a hierarchy from kingdom to species.

The taxonomic classification was given by Carlos Linnaeus who is known as the Father of Taxonomy.

In descending order it is classified as:

Kingdom - Phylum - Class - Order - Family - Genus - Species

A taxon is usually known by a particular name and given a particular ranking and is given formal science name, its use is then governed by one of the nomenclature code specifying which scientific name is correct for particular grouping.

What is species?

Species are the most specific taxon which share common traits and characteristics closely to each other and are capable of interbreeding.

It is the largest group of organisms in which any two individuals of the appropriate sexes or mating type can produce fertile offspring through sexual reproduction.

Types of species:

- Typological/ Morphological Species:

Individuals are having fixed properties as can be easily recognized by the modern taxonomist.

- Recognition/ Cohesion species:

Group of sexually reproducing organisms recognizing one another as potential mates.

- Genetically similar

- Phylogenetic/ Cladistics species:

These are the smallest group based on unique combination of character states in comparable individuals.

- Evolutionary species:

Set of species adapted to a particular set of resources called niche in the environment.

- Genetic Species:

Set of genetically isolated interbreeding populations.

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What observations will you make with the use of
the virtual microscope?

Answers

Answer:

I would do food to see what's particals are making up our food

Please help me on this guys!

Answers

................................


9) How do the shapes of our ears help us to hear?
1.The ridges in the ear help us capture sound
2.Our ears are large allowing them to pick up quieter sounds
3.Our ears are shaped like a funnel, allowing sound to be funneled into our ear canal
4.Our ears are placed on the side of our head to maximize the sounds we car hear

Answers

I think the third option

The shapes of our ears help us to hear by the fact that they are shaped like a funnel that allows the sound to be funneled into our ear canal. Thus, the correct option for this question is C.

What are the major parts of the ear involved in the hearing process?

The major parts of the ear that are involved in the hearing process are the auricle (pinna), ear canal, ear drum or tympanic membrane, cochlea, etc.

The auricle is the outermost part of the ear that is visible. It significantly gathers the sound waves from the surroundings and directs them to the ear canal. In this region, the sound is amplified. The amplified sound waves then travel to the end of the ear canal known as the tympanic membrane.

The vibration then migrates through the fluid in the spiral-shaped inner ear known as the cochlea. This region is surrounded by hair cells that detect the motion and transform it into chemical signals for the hearing nerve.

Therefore, our ears are shaped like a funnel, and allowing sound to be funneled into our ear canal is a statement that best describes the process. Thus, the correct option for this question is C.

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Do you think that governments should institute measures to control the human population? Please don’t send me those file things. Please just give me the answer.

Answers

As the world population reaches seven billion people, the BBC's Mike Gallagher asks whether efforts to control population have been, as some critics claim, a form of authoritarian control over the world's poorest citizens.
The temperature is some 30C. The humidity stifling, the noise unbearable. In a yard between two enormous tea-drying sheds, a number of dark-skinned women patiently sit, each accompanied by an unwieldy looking cloth sack. They are clad in colourful saris, but look tired and shabby. This is hardly surprising - they have spent most of the day in nearby plantation fields, picking tea that will net them around two cents a kilo - barely enough to feed their large families.
Vivek Baid thinks he knows how to help them. He runs the Mission for Population Control, a project in eastern India which aims to bring down high birth rates by encouraging local women to get sterilised after their second child.
As the world reaches an estimated seven billion people, people like Vivek say efforts to bring down the world's population must continue if life on Earth is to be sustainable, and if poverty and even mass starvation are to be avoided. There is no doubting their good intentions. Vivek, for instance, has spent his own money on the project, and is passionate about creating a brighter future for India.
But critics allege that campaigners like Vivek - a successful and wealthy male businessman - have tended to live very different lives from those they seek to help, who are mainly poor women.
These critics argue that rich people have imposed population control on the poor for decades. And, they say, such coercive attempts to control the world's population often backfired and were sometimes harmful.
Population scare
Most historians of modern population control trace its roots back to the Reverend Thomas Malthus, an English clergyman born in the 18th Century who believed that humans would always reproduce faster than Earth's capacity to feed them.
Giving succour to the resulting desperate masses would only imperil everyone else, he said. So the brutal reality was that it was better to let them starve.
Rapid agricultural advances in the 19th Century proved his main premise wrong, because food production generally more than kept pace with the growing population.
But the idea that the rich are threatened by the desperately poor has cast a long shadow into the 20th Century.
From the 1960s, the World Bank, the UN and a host of independent American philanthropic foundations, such as the Ford and Rockefeller foundations, began to focus on what they saw as the problem of burgeoning Third World numbers.
The believed that overpopulation was the primary cause of environmental degradation, economic underdevelopment and political instability.
Massive populations in the Third World were seen as presenting a threat to Western capitalism and access to resources, says Professor Betsy Hartmann of Hampshire College, Massachusetts, in the US.

Which of the following statements is NOT true about the structure of DNA?.

Answers

Answer:

C. The two strands are considered paralle

Explanation:

The answer is C hope this help

Where are electrons found?

Answers

located inside the nucleus at the center of an atom

An individual expresses a recessive genetic disease. Which statement best explains how that person inherited the disease?
Group of answer choices

The individual received recessive genes from both parents.

The individual received dominant genes from both parents.

The individual received a mutated gene from one parent.

The individual received one dominant and one recessive gene from the parents.

Answers

Answer:

The first one or the last one

Explanation:

If the disease is rr, the The parents have to have at least one recessive gene -- they should by Rr and Rr or Rr and rr or rr and rr.

Andalusian chickens can be black (BB), white (WW), or blue (BW).  Cross a black chicken with a white chicken.  What are the genotype and phenotype percentages? 

Answers

Answer:

A cross between a true-breeding, white-feathered Andalusian hen and a true-breeding, black-feathered Andalusian rooster results in 100% blue-feathered Andalusian offspring.

Explanation:

the difference between incomplete dominance and codominance: ... In some chickens, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is W. The heterozygous phenotype is known as ... 50% of the offspring have genotype BW, 25% are BB, and 25% are WW.

Choose the statement below that is true. Photosynthetic enzymes are denatured at high temperatures. Increasing temperature always increases the rate of photosynthesis. Too much carbon dioxide is toxic for plants. The main limiting factors are temperature, light intensity and oxygen concentration.

Answers

Answer:

The correct answer would be -

Photosynthetic enzymes are denatured at high temperatures

Too much carbon dioxide is toxic for plants

Explanation:

Temperature is a limiting factor for the rate of photosynthesis due to the fact the at high-temperature photosynthesis is affected as initially with an increase in temperature rate of photosynthesis but after a limit, it becomes constant and increasing above that will result in denaturing of the photosynthetic enzymes.

CO2 is also a limiting factor that limits the photosynthetic rate if too little or affects the photosynthesis in the too much amount by denying the O2 intake by soil and make leaves thick.

Which student scenario correctly matches the Kingdoms based on the characteristics given in the chart?
O A Student i believes Kingdom A is bacteria because it is unicellular and prokaryotic. Student 2 believes that kingdom B is plant
because it is missing a cell wall and is multicellular.
O B. Student 1 believes Kingdom A is bacteria because it is unicellular and prokaryotic. Student 2 believes that Kingdom B is animal
because it is eukaryotic and heterotrophic.
OC. Student 1 believes Kingdom A is animal because it is prokaryotic and unicellular. Student 2 believes that kingdom B is bacteria
because it is unicellular and prokaryotic.
D. Student 1 believes Kingdom A is fungi because it is autotrophic and unicellular. Student 2 believes that kingdom B is animal

Answers

Answer: B

Explanation: Quizzez:)

Student 1 believes Kingdom A is bacteria because it is unicellular and prokaryotic. Student 2 believes that Kingdom B is animal because it is eukaryotic and heterotrophic.

What is a kingdom?

In biological classification, a kingdom is the second highest taxonomic rank below domain. It is used to group organisms based on their similarities and differences in characteristics and traits. The system of classification, known as Linnaean taxonomy, categorizes living things into five kingdoms: Monera, Protista, Fungi, Plantae, and Animalia.

Each kingdom is defined by specific characteristics such as cell structure, mode of nutrition, and reproductive strategies. For example, the Monera kingdom consists of unicellular organisms with prokaryotic cells, while the Plantae kingdom includes multicellular organisms that produce their own food through photosynthesis.

The kingdom level of classification helps scientists understand the relationships and diversity of living organisms, which is important for fields such as ecology, evolutionary biology, and biotechnology.

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30 POINTS PLEASE HURRY!!! Which of the following conditions affect the lower respiratory system? check all that apply.

pneumonia

sinusitis

emphysema

common cold

tuberculosis

Answers

Answer:

A,C and E.

Next one is C- Gradual destruction of alveoli.

Explanation:

Edge 2021

Answer:

a c and e

Explanation:

HELP DUE in 10 MINS! The Calvin Cycle takes place in which area?


A


B


C

Answers

The Calvin Cycle take place in the Stroma (B)
ohh is sir too lwte sorry maybe next time

How will the increase in the tuna population affect the other populations? Be sure to explain whether the dolphin population, the squid population, and the herring population will change, and why.

Answers

Complete question:

Scientists have been studying four populations in one area of the Atlantic Ocean. In this area, both tuna and dolphins eat squid, and squid eat herring (a type of fish).

The data shows that recently the tuna population increased. How will the increase in the tuna population affect the other populations? Be sure to explain whether the dolphin population, the squid population, and the herring population will change, and why.

You will find the image in the attached files.

Answer:

Tunas´ population increasesSquids´ population decreases because more tuna eat themDolphins´ population decreases because there are fewer squids availableHerrings´ population increases because they do not suffer predation by squids.

Explanation:  

In the trophic web occurs a process of energy transference through different organisms placed at different levels.  Each level feeds on the preceding one and becomes food for the next one. The first link is an autotroph organism or producer. The following links are the consumers: herbivores are primary consumers and feed on producers. Carnivores are secondary consumers and feed on herbivores, and so on. The last links are the decomposers, microorganisms that act on dead animals degrading organic matter.

If any of the links change their population size (increasing it or decreasing it), it affects the superior links and the immediately anterior link.

In the exposed example of the trophic web, tuna feeds on squids. If the tuna population increases in size, there will be more individuals feeding on squids. Squids will be affected because too many animals are eating them, and they will not have enough time to reproduce and recover the normal population size. The mortality rate by predation is higher than the natality rate, meaning that the squid population will decrease.

Dolphins also feed on squids. But as the tuna population increases in size, competition for squid prey will be higher. Both species (tuna and dolphins) will compete for food. But tuna will eat more squids, and hence, dolphins will be affected and decrease in population size.

Usually, herrings are eaten by squids. But as the squids' population decreases, herrings will not suffer from predation, and their population will increase in size.

So, to sum up:

Tunas´ population increasesSquids´ population decreases because more tuna eat themDolphins´ population decreases because there are fewer squids availableHerrings´ population increases because they do not suffer predation by squids.

need help !! will mark brainlyist!!

Answers

Answer:

I think its C

Explanation:

What specific type of symmetry does a sea star have?

Answers

Answer:

radial symmetry

Starfish have radial symmetry with each arm portion of the starfish identical to each of the other regions

Explanation:

mark brainliest please

Answer:

A typical Star fish has five side of symmetry with no clear head the star fish can move in any directions and it is led by anyone of its five arms . Starfish has a radial symmetry .

I guess this might help u out

PLS HELP‼️
I need help deciding the “Kingdom of Life” for each organism!

Answers

Answer:11-f i believe because its a type of pond im sorry if im wrong

12- fungi

Explanation:

How can major geologic events and changes in organisms provide evidence for constructing a timeline of earth’s history?

Answers

Geologists and other Earth scientists use geologic time scales to describe when events happened in the history of Earth. The time scales can be used to show when both geologic events and events affecting plant and animal life occurred.

Geological events play an important role in order to observe changes in organisms that significantly provide evidence for constructing a timeline of earth’s history.

What is the mechanism called which involves change?

The mechanism that remarkably involves changes in living organisms is known as natural selection. These selections are based on the adaptations and requirements of the organisms with respect to nature.

Geological events and other scientific experiments utilize these geologic time scales in order to illustrate when events occurred within the history of Earth.

These geological time scales are utilized to express both consequences such as geological events and the events that occurred that widely impacted the life and strategies of plants and animals.

Therefore, geological events play an important role in order to observe changes in organisms that significantly provide evidence for constructing a timeline of the earth’s history.

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I WILL GIVE BRAINLIEST. <33 PLEASE HELP
The nervous system is one system among several in the human body. In order to function, does the nervous system depend on other systems such as the muscular system or the respiratory system? Conversely, do these systems depend on the nervous system? Explain your reasoning for each answer.

Answers

Answer:

The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.

Explanation:

I hope that helps

All nucleotides of DNA and RNA contain a
a) uracil base
b) thymine base
c) ribose sugar
d) phosphate group

Answers

Answer:

Phosphate group

Explanation:

Each nucleotide consists of a heterocyclic base linked via a five-carbon sugar (deoxyribose or ribose) to a phosphate group. DNA and RNA each contain four different bases. The purines adenine (A) and guanine (G) and the pyrimidine cytosine (C) are present in both DNA and RNA. So both DNA and RNA have four nitrogenous bases each—three of which they share (Cytosine, Adenine, and Guanine) and one that differs between the two (RNA has Uracil while DNA has Thymine). One of the most significant similarities between DNA and RNA is that they both have a phosphate backbone to which the bases attach.

All nucleotides of DNA and RNA contain a phosphate group. Hence, option D is correct.

What do you mean by Nucleotides?

Nucleotides may be defined as the components of nucleic acids. It is composed of a phosphate group, a nitrogenous base, and sugar.

Uracil base is present in RNA, thymine base is present in DNA, ribose sugar is found in RNA, while deoxyribose sugar is found in the DNA.

Therefore, all nucleotides of DNA and RNA contain a phosphate group.

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Which three minerals are most likely used in the construction of a house?

Answers

Answer:

lead pencils (graphite)

fertilizer (potassium, sodium, calcium)

chalk (gypsum)

flashbulb (zirconium)

window glass/mirrors (silica)

table salt (halite)

Explanation:

The energy found in the sugar started from the light energy and it was transformed to chemical energy. This statement shows the Law of what??

a.Conservation of energy or Thermodynamics
b.Centrifugal Force
c.Relativity
d.Perpetual motion​

Answers

D. I believe it to be
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