Which organism is not multicellular and does not display a vertebral column?

A. human
B. koala
C. flatworm
D. paramecium

Answers

Answer 1
answer is d:paramecium
Answer 2

Answer:

D: Paramecium

Explanation:

Paramecium is a unicellular organism with a shape resembling the sole of a shoe. It ranges from 50 to 300um in size which varies from species to species. It is mostly found in a freshwater environment. It is a single-celled eukaryote belonging to kingdom Protista and is a well-known genus of ciliate protozoa.


Related Questions

ILL GIVE BRAINIEST!
Which of the following human actions could have a positive impact on local ecosystems?

Choose 1 answer:
A) Clearing forests to make way for new farms

B) Using renewable resources

C) Producing waste during technology development

D) Increasing the use of pesticides to protect crops

pls don’t answer if you don’t know, i need to pass this test.

Answers

Answer:using renewable sources

Explanation:

All the others are bad for the environment

what animal is this?​

Answers

Answer:

It is a flying squril.

Explanation:

chinchilla it looks like but not sure

Predictions:
20%


50%


60%


Actual results
20%


50%


60%

Answers

Answer:

I'm not sure how to help with this question because there was not enough information given.

Answer:

um i don't know

Explanation:

which energy source are cause of deforestation

Answers

Answer:

The energy source caused by deforestation is Woodfuel.

Explanation:

Hope this helps!

1. Name a protein that carries vital materials throughout the body.
2. Explain the specific function of this protein.


Please help thanks

Answers

Answer:

RBCs contain hemoglobin (pronounced: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs. As the blood travels through the body, the hemoglobin releases oxygen to the different body parts.

Explanation:

Hope this helps.


What would be a growth factor for a population of deer?

New food sources
Increase in predators
Competition
Disease

Answers

Answer:

new food sources

Explanation:

other three factors do not contribute to the growth of them

10. How does a sex cell differ from a body cell?
A. A sex cell does not contain chromosomes.
B. A sex cell contains homologous chromosomes.
C. A sex cell has the same number of chromosomes as a body cell.
D. A sex cell has the half the amount of genetic material as a body cell.

Answers

I think that’s D I’m not sure

Which is an example of a human disturbance in a community?


flood

toxic spill

major storm

Answers

Toxic spill because its man-made

BRAINLIEST INCLUDED!!! :)
A student develops the model pictured in order to support his explanation about a cell functioning in the body.



Which statement is the MOST reasonable explanation supported by the model?


A
The lysosomes digest everything that enters the cell.

B
The nucleus controls all activities that occur in the cell.

C
The mitochondria provide energy for internal functions.

D
The cell membrane takes in food and releases cell waste.

Answers

Answer:

A

Explanation:

+
50. The work of scientists usually begins wit

testing a hypothesis.

careful observations.

creating experiments.

drawing conclusions.

Answers

Answer:

Careful observations

Explanation:

Please hELP ASAP WILL MARK BRAINLIST

Answers

Answer:

A

Explanation:

Hope I helped

its A, good luck, if its a test!

Little help, please.....
Which of the following best describes the amount of daylight received in Georgia throughout the year?
A. The amount of daylight is exactly the same all year long
B. More daylight is received in summer than in winter
C. The amount of daylight changes as the Moon phases changes
D. Daylight periods are longest during the coldest weather
WILL MAKE YOU BRAINLIEST

Answers

Answer:

C. The amount of daylight changes as the Moon phases change?

Explanation:

write in breif abaut the importance of social tradition and costoms of nepal

Answers

Answer:

Most of the customs of Nepal go back to the Hindu, Buddhist, or other religious traditions

Explanation:

Nepal is rich in various cultures and customs, related to Hindu and Buddhist traditions. As in Hindu tradition, in Nepal marriages are arranged by parents, many ethnic groups have their own language and beliefs.

Society is divided into casts. Death rites are common and the deceased is mourned for 13 days.

Name 3 populations found in the Yellowstone ecosystem.

Answers

Answer:

Me

Explanation:

Answer:oh hdhfhdufhfhfufdhdh

Ryhdhd

Explanation:

In the year 2500, five male space colonists and five female space colonists from Earth settle on an uninhabited Earth like planet in the Andromeda galaxy. The colonists and their off-spring randomly mate for generations. All ten of the original colonists had free earlobes, and two are heterozygous for that trait. The allele for freeear lobes is dominant to the allele for attached ear lobes.

Required:
What is the allele frequency in the founding population?

Answers

Answer:

The correct answer would be - 0.1 a, 0.9 A

Explanation:

The initial population of the colonist had free earlobes which are represented by A here as it is dominant and attached is represent by a. purebred dominant would have AA.

Frequency of allele A =

8 pure dominant and 2 heterozygous dominant presents in the population

So, frequency of A allele = 8 x 2 + 2 / 20

= 18/20

= 0.9

As we know

p+q=1;

frequency of allele "a" = 1-p

= 1-0.9

= 0.1

Dr. Thalmus suggested that Tim take a regimen of Human Chorionic Gonadatropin (HCG), which has the same effects as Luteinizing Hormone (LH) Why would he recommend this

Answers

Answer:

Tim and his wife are trying to have babies

Explanation:

The hCG or the Human chorionic gonadotropin is the name of a hormone that is for the maternal recognition of pregnancy and is produced by the trophoblast cells which surrounds a growing embryo, and it eventually forms placenta after implantation.

Luteinizing hormone is also known as gonadotropin. This hormones is an important sex hormones for both men and women.

In the context, the doctor advised Tim to take a medical course of hCG that is having the similar effects like the luteinizing hormones as Tim and his wife is planning for babies.

in which case would facilitated diffusion be needed?
A. With large polar molecules moving against the concentration
gradient
B. With very small non polar particles moving down the
concentration gradient.
C. With very small polar particles moving against the
concentration gradient.
D. With large non polar molecules moving down the concentration
gradient.

Answers

Answer:

The case in which facilitated diffusion would be needed is in the transport of large non-polar molecules moving down the concentration gradient.

Explanation:

Facilitated diffusion (FD) involves a form of passive transport, that is, it does not require energy and mobilizes substances across the cell membrane in favor of a concentration gradient.

The passive transport mechanism of FD is necessary only in the case of transport of very large molecules or polar molecules that:

Cannot be transported by simple diffusion, due to the selective permeability of the membraneThey follow a concentration gradient, from the place with the highest concentration to the one with the lowest concentration.

For FD to occur, it requires the use of a protein, which acts as a carrier of the molecules to be mobilized.

The other options are not correct because:

    A and C. Passive transport, as facilited diffusion,  implies movement in favor of a concentration gradient.

    B and C. Non-polar small or very small molecules can cross the membrane by simple diffusion.

With large non-polar molecules moving down the concentration gradient.

FIRST ANSWER GETS BRAINLIEST Which is one characteristic of deep ocean currents?
move quickly
Move because of wind
move cold water
move in a circular pattern

Answers

Answer:

Move quickly

Explanation:

Answer:

C. Extremly cold water

Explanation:


Jessica: Pitch is how high or low a sound is. The pitch depends on vibrations. High pitch sounds have low amounts of vibrations
Rachael: Pitch describes how high or low a sound is. Sounds are caused by vibrations. The more vibrations, the higher the pitch.
Harvey: Pitch is caused by vibrations. The more vibrations, the lower the pitch of the sound.
Derek Pitch is how high or low a sound is. All sounds have mostly the same pitch.
Who has the best description of pitch?
Jessica
O Rachel
O Harvey
O Derek

Answers

Answer: Rachel

Explanation:

Pitch indeed refers to the highness of lowness of a sound. We are able to sense pitch based on the frequency of the sound wave with a higher frequency (more vibrations) having a higher pitch and a lower frequency having a lower pitch.

This is why lighter strings on guitars produce a higher pitch because when struck, they vibrate more as opposed to heavier strings. Rachel is therefore correct.

How many chromosomes are in each of the two new human body cells at the end of mitosis?

Answers

There are 30 chromosomes

After pollen grows a tube down the style

A egg cells unite with an embryo

B chromosomes split in half

C the pollen sticks to the stigma

D sperm cells travel to the ovary​

Answers

Answer:

D

Explanation:

sperm cells travel to the ovary for fertilization

Which of the following is an example of an ecosystem?
A. All of the plants and animals that live in a forest.
B. All of the squirrels that live in a forest
C. All of the living and nonliving things that interact in a forest.
D All of the squirrels that live in a forest, as well as the water, air, and living things the squirrels need to survive.

Answers

Answer:

c) all if the living and nonliving things that interact in a forest.

Explanation:

The example of ecosystem is as follows: All of the squirrels that live in a forest, as well as the water, air, and living things the squirrels need to survive.

What is an ecosystem?

Ecosystem refers to the interconnectedness of organisms (plants, animals, microbes) with each other and their environment.

Ecosystem can also be described as the relationship between the abiotic and biotic components of the environment.

Therefore, a valid example of an ecosystem is all of the squirrels that live in a forest, as well as the water, air, and living things the squirrels need to survive.

Learn more about ecosystem at: https://brainly.com/question/13979184

X-rays have more energy than ultraviolet waves.
What else is true about
X-rays?
O A. They have a shorter wavelength than
ultraviolet waves.
O B. They have a smaller amplitude than
ultraviolet waves.
C. They have a longer wavelength than
ultraviolet waves.
O D. They have a lower frequency than
ultraviolet waves.

Answers

Answer:

A. They have shorter wavelength then ultraviolet waves. is correct

Explain why DNA requires structural robust and efficient storage and organization mechanisms/structures.

Answers

Answer:

DNA packaging contributes to the compaction of the genetic material into cells that are many times smaller and also regulates gene expression and cell replication in living systems.

Explanation:

DNA is a fundamental molecule that contains instructions that make each organism unique. Each chromosome is composed of a very long linear DNA molecule associated with histone proteins that compact the genetic material, which is known as DNA packaging. Transcription and replication require that both strands of the DNA separate. Nonetheless, during DNA packaging, nucleosomes and the folding into chromatin fibers ensure chromosomal DNA is correctly packaged inside smaller nuclei. In consequence, DNA packaging not only enables the compaction of long linear DNA into the cells but also is involved in key biological processes such as gene regulation (transcription) and cell replication.

Please help, if question is right I will give brainliest.

Answers

Answer:

Flagella

Explanation:

The flagella or flagellum has a long, tail-like extension.

HELP HELP HELP HELP HELP

Answers

I think it’s 3 but I did this type of stuff 2 years ago so I can’t guarantee

Which of the following catastrophic events would have the LEAST impact on TEXAS?
O Earthquake
Tornado
O Flood
Hurricane

Answers

Answer:

Either earthquake or flood.

Explanation:

Texas has proven that it does not handle hurricanes well. And a tornado would not affect Oklahoma, but it might affect Texas, I'm not sure as I do not live in Texas, rather I live in Oklahoma.

The ancient Egyptians were able to predict when the Nile River would flood?

Answers

Answer:

The awnser is Yes they did they grew there crops right by the river and when the water rised in the crops they knew that a flood was coming and would prepare for it.

Explanation:

Brainliest please

During a chemical reaction, a solid formed from a liquid. What is the formation of a solid during a chemical reaction called?

A)
Frozen
B)
Precipitate
Solvation
D)
Dissolution

Answers

Answer:

solvation

Explanation:

How are dogs an example of selective breeding? Which two characters would you like to have in the off spring?

Answers

Answer:

There are over 400 breeds of dog in the world and all are maintained as pure-bred stocks through selective breeding, which aims to maintain a closed genetic lineage. Most dog traits follow simple genetic rules. Traits are often referred to as being dominant or recessive.

Explanation:

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