Within the Phylum Mollusca, what is the
radula?
A. the organ that grinds up food before digestion
B. the organ that turns into the shell of the animals
C. the organ that circulates blood through the organism

Answers

Answer 1

Answer:

I think the ans is no.a ok

please mark as brainliest


Related Questions

You will create a molecular clock model for an arthropod gene. Follow these guidelines to make your model:

Your timeline will span from 90 million years ago to the present. The common ancestor in your model is an arthropod that lived 90 million years ago. The gene that you’ll track codes for a protein in the species’ venom.
The DNA sequence you’ll track contains 10 nitrogen bases. You can choose the order of the bases and where the mutations occur.
This gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. To build your model, calculate the estimated time period it takes for 1 base pair to mutate.
The first time period will only show the common ancestor. At the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences.
The first and third descendant species will survive for the rest of the timeline. The second descendant species was extinct 50 million years ago.
Calculate how long it will take for one full base pair mutation to occur. Explain your reasoning by constructing a mathematical equation.

Answers

Answer:

The mutations occur at a rate of 0.56 base changes every 1 billion years. If this rate stays consistent, the mutation rate can be used to determine when different lineages of a particular species split

Answer:

It takes about 17.1 Million years for a base pair to mutate at a rate of 0.76 base pairs. To get the time it takes for one full mutation to occur, you must divide 17.1 to 0.76 and multiply it by 1. So, (17.1/0.76)×1=22.5. It would take about 22.5 million years for one full base pair mutation to occur. Having this being said, the first descendant with one base pair mutation would change after 22.5 million years from the common ancestor. For the second descendant, it would take 45 million years as 22.5 time 2 is 45. 5 million years later, the second descendant will become extinct while the first descendant survives. The third descendant will take about 22.5×3= 67.5 million years. Now, the first and third descendants will survive while the second descendant is extinct.

Please mark as brainliest :)

B is wrong need help

Answers

Answer:

its A i think

Explanation:

trust me bro

What is an advantage of electron microscopes compared to light microscopes?
They have a much higher power of resolution.
They can be used to view live specimens.
They are inexpensive and commonly found in classrooms.
They are helpful during dissections.

Answers

Answer:

They have much higher power of resolution.as compared to light microscope.

Glycolysis and gluconeogenesis are opposing pathways in that they begin or end with the same metabolites and share common intermediates and/or enzymes. Yet, for energetic reasons, the two processes cannot be the exact reverse of each other. How is this possible

Answers

Answer:

Due to difference in their products.

Explanation:

Glycolysis and gluconeogenesis are not exact reverse to each other because in glycolysis, glucose is converted into pyruvate, adenosine triphosphate (ATP), NADH, protons i.e. hydrogen ions and water whereas in gluconeogenesis, pyruvate is converted into glucose and glycogen. So due to  the formation of different products of each process we can say that glycolysis is not exact reverse of gluconeogenesis.

describe the role of enzymes in seeds germination​

Answers

Answer:

Enzymes such as amylase ,protease and lipase are liable for solubilizing spare food materials in form of starch, protein and lipids correspondingly

in seed and deliver energy and other fundamentals food materials to germinating embryo.

The seed proteins are catalyzed by protease enzyme and break it into amino acid and peptides that a e transferred to growing embryo.

The amino acids obtained from metabolism of the proteins are further used in biosynthesis of enzymes,hormones,proteins, pyrimidines and Purine bases.

The starch is catalyzed by enzyme amylase that provides the food materials for growth and development of embryo . Similarly lipase are enzymes that are responsible for metabolism of the triacylglycerols into glycerols and fatty acids.This is also the source of energy for growing embryo

Which of the following correctly describes the formula for speed?

Answers

Answer:

im sorry there are no options to the question

Answer:

Speed = Distance/ Time taken

identiying Parts of Spheres Use the drop-down menus to identify the spheres to which each part belongs.

A lake is part of the ___

Water vapor in the air is part of the___

Glacier and iceburgs are part of the___

The rocky mountains are part of the___

A deer is part of the____​

Answers

Answer:

Answer is

A lake is part of the hydrosphere.

Water vapor in the air is part of the atmosphere.

Glacier and icebergs are part of the cryosphere.

The Rocky Mountains are part of the geosphere.

A deer is part of the biosphere.

A researcher is examining a sample of smooth muscle tissue under a microscope. Which of the following would correctly describe what he sees? (2 points)


Short cells with no striations and one nucleus per cell

Long cells with no striations and one nucleus per cell

Long cells with striations and no nuclei

Short cells with striations and no nuclei

Answers

The answer would be B

Que tipo de ecosistema tienen los pingüinos emperador y Adelia?

Answers

Answer:

Los pingüinos Adelia viven en el continente antártico y en muchas pequeñas islas costeras circundantes. Pasan el invierno en alta mar en los mares que rodean el hielo antártico.

Los pingüinos emperador viven exclusivamente en entornos antárticos gélidos. Prefieren reproducirse durante el invierno, cuando el hielo se congela y se estabiliza. Estos pingüinos suelen crear colonias de reproducción en áreas cercanas a icebergs y acantilados helados, que los protegen de los peores vientos fuertes.

Explanation:

te ayuda esto?

Which of these organelles is NOT in animal cells?

Ribosome
Endoplasmic Reticulum
Cell Wall

Answers

Cell wall is not found in animal cells

Genesis that forms from high-grade region of heat and pressure example of steps in ____ cycle


1. Rock cycle

2. Carbon cycle

3. Tectonic cycle

4. Water cycle

Answers

Answer:

tectonic cycles

Explanation:

the house in question was

What is the function of the Xylem in a leaf?

Answers

A leaf is xylem the of function the is what

what are the main layers of Earth's interior and the indirect evidence that helped us determine the layers?

Answers

Answer:

Explanation:

layers of earth

crust

mantle

outter mantel

inner mantle

core

outter core

inner core

oil-rich countries in the middle east cover about 4% of earth's total land area but posses about 48% of the world's known oil reserves. what is the main reason for high concentration of reserves in this part of the world?

Answers

The correct answer is A. Geological processes.

Explanation

Oil is a hydrocarbon of fossil origin by geological processes that transforms large amounts of organic matter deposited on anoxic bottoms of seas or lake areas of the geological past, which were later covered by heavy layers of sediment. This causes organic materials to be transformed into oil by the heat and pressure of the upper layers. However, this phenomenon does not occur in all parts of the earth because in some, as in the case of the Middle East, there were large amounts of organic matter that became an oil reserve. So the correct answer is A.

What type of evolutionary adaptations did plants acquire to allow them to grow in areas that were not directly on a water source?

Answers

Answer:

Plants developed roots to absorb water from the ground

Answer:

Vascular seedless plants evolved specific structures to transport and hold fluids, reducing dependence on water sources.

Explanation:

If given the ability to hold on to water, the plant does not have to frow directly on a water source.

When a pathogen is growing and multiplying within or on a host (which may or may not result in overt symptoms) this is known as a(n) ______. Multiple choice question. infection latent infection infectious disease opportunistic infection

Answers

Answer:

Infection would be the answer for the blank

which best describes a bacterium

Answers

a unicellular prokaryote

Answer:

Bacteria

Bacteria are a type of biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Wikipedia

Explanation:

a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some that can cause disease.

Which of the following represents a population?
1 point
a single pigeon in a given area
a group of pigeons in a given area
a group of pigeons, mice and trees that live in a given area
all living things and non-living things in a given area

Answers

Answer:

A single pigeon in a given area

Explanation:

It tells us the actual number of pigeon in a specified area

Explain how the changes in the villi of a person with coeliac disease may cause the person to lose weight and have low amounts of vitamins and minerals in their body

Answers

Answer:

The changes in the villi of a person with coeliac disease may cause the person to lose weight and have low amounts of vitamins and minerals in their body because Villi absorb vitamins, minerals and other nutrients from the food you eat.

6. What do fungi have in common with animals?

Answers

Answer:

Fungi are more like animals because they are heterotrophs, as opposed to autotrophs, like plants, that make their own food. Fungi have to obtain their food, nutrients and glucose, from outside sources. The cell walls in many species of fungi contain chitin.

which of the following is true for a eukaryote?

A. it is one of the first life forms to appear on earth.

B. it doesn't have a nucleus and organelles.

C. it must be a multicellular organism.

D it evolved from prokaryotes

Answers

Answer:

D it evolved from prokaryotes

Explanation:

let me know if you have any questions

Which of the following is NOT an organ system in the human body?
A. Endocrine system
B. Replicatory system
C. Digestive system
D. Lymphatic system

Answers

B. The replicatory system is not a organ sytem in the human body.

A group is considered monophyletic if
A. all members of the group share a common ancestor that is included in the group.
B. all members share homoplastic traits.
C. the group does not contain the most recent common ancestor.
D. not all descendants of the common ancestor are included.
E. it is the most parsimonious grouping.

Answers

The answer would be e it is the most parsimonious grouping

When a person runs his body temperature goes up why and how it comes to normal

Answers

Answer:

the average person today actually runs then you will notice that your skin temperature is going to go down not up

Explanation:

Which of the following would be examples of abiotic factors in a mountain river ecosystem?
fish, algae, and sand

sand, water, and fish

sand, water, and minerals

water, fish, and algae

Answers

Sand , water , and minerals

Genetic variation is more commonly found in sexually reproducing organisms, as compared to asexually reproducing organisms, because
1 point
in asexual reproduction gametes fuse to lead to new genetic combinations
in sexual reproduction the gametes formed are all genetically identical
in asexual reproduction the gametes formed are genetically different
in sexual reproduction gametes fuse to lead to new genetic combinations

Answers

Answer:

In sexual reproduction gametes fuse to lead to new genetic combinations

Explanation:

In sexually reproducing organisms, there are two parents who create genetically diverse offspring.

This occurs because the gametes of the two parents combine to create very unique genetic combinations, which lead to increased genetic variation.

On the other hand, asexually reproducing organisms reproduce without a partner.

Their offspring are identical clones to the parent, so they have much less genetic variation.

So, the correct answer is that In sexual reproduction gametes fuse to lead to new genetic combinations.

¿Qué acciones podrían realizar para poder reducir los gases de efecto invernadero como el Co2?
AYUDA POR FAVOR
DOY CORONITA Y 5 ESTRELLAS

Answers

Explanation:

Ser conscientes del impacto de las emisiones de CO2. ...

Reducir el uso del coche privado. ...

Practicar una movilidad sostenible. ...

Aumentar nuestra eficiencia energética. ...

Consumir energía renovable. ...

Seguir una dieta con baja huella de carbono. ...

Convertirse en un consumidor sostenible.

Más elementos…

answer h and i urgently
no explanation needed ​

Answers

Answer:

h. I think option c growth of an organism in not true

C
I think its the best answers

Why do animal cells not need central vacuoles?
A: Animal cells are round.
B:Animal cells have cell walls.
C:Animals do not produce their own food
D:bodies have skeletons.

Answers

Answer:

B:animal cells have cell walls

What is the Constant of “which bait works best for a fly trap?”

Answers

Answer:

Mix scraps of meat (the older, the better) with something sweet. Lots of people swear by using rotten fish or shrimp, which probably work best because they smell so much. Bait for Fruit Flies: Use fruit (the riper, the better), apple cider vinegar, fruit juice, syrup, wine, beer, or any combination

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