What are the 3 classes of mollusks and how are they different?

Answers

Answer 1

The three main classes of mollusks are: Gastropods, Bivalves and Cephalopods. Gastropods have a single large foot, bivalves have two calcareous shells and Cephalopods are recognized by their unique method of locomotion.

Mollusks are the organisms of the phylum Mollusca. It is recognized by the presence of calcareous shells, visceral mass, muscular foot. The Mollusca is the second largest phylum of kingdom Animalia.

Cephalopods are the largest animals amongst all invertebrates, They are recognized for their method of locomotion where they release a stream of water through the body for their movement. Cephalopods have a well developed nervous system as well as closed circulatory system.

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Related Questions

7.
The diagram below represents the flow of energy through a food chain.

5,000 units of energy
50 units of energy
500 units of energy
5.0 units of energy

If 5,000 units of energy are available from the producers, how much energy will be available to the secondary consumers?

Science not biology

Answers

The answer would be 500 because every time the food chain goes up the energy goes down 10 times. Hope this helps :-)

The following metabolic pathway involves the action of many enzymes within a cell.

Substrate 1 --> Substrate 2 --> Substrate 3 --> Product

Explain what would happen to the amount of product produced if the enzyme that acts on substrate 2 was not produced in the cell. All other enzymes at each step of the pathway are present.

Answers

Answer:

The metabolic pathway you described involves a series of chemical reactions that convert one substrate into the next substrate until the final product is formed. If the enzyme that acts on substrate 2 is not produced within the cell, the reaction that converts substrate 1 into substrate 2 would not occur. This would cause a block in the pathway, as substrate 2 would not be available for the enzyme that converts substrate 2 into substrate 3.

Explanation:

The metabolic pathway you described involves a series of chemical reactions that convert one substrate into the next substrate until the final product is formed. If the enzyme that acts on substrate 2 is not produced within the cell, the reaction that converts substrate 1 into substrate 2 would not occur. This would cause a block in the pathway, as substrate 2 would not be available for the enzyme that converts substrate 2 into substrate 3.

As a result, the amount of product produced would be severely decreased. Because of the missing enzyme, substrate 2 would not be converted into substrate 3, and subsequently, substrate 3 would not be converted into the final product. If this key enzyme is not present, the entire metabolic pathway would be halted at the step involving substrate 2, causing the cells to be unable to produce the final product and creating a bottleneck in the metabolic pathway.

It's important to remember that enzymes are catalysts, they speed up the reactions of the metabolic pathway and ensure the reactions occur at appropriate rates to support life, even a small change in the enzyme activity can affect the entire pathway and alter the final product quantity and quality.

What are 2 reasons a mutation can happen?

Answers

Viral infection, mutagen exposure, or errors in DNA replication during cell division can all lead to mutations. Viral infection, mutagen exposure, or errors in DNA replication during cell division can all result in mutations.

Changes to an organism's DNA sequence are referred to as mutations. Somatic mutations those that take place in body cells cannot be passed on to progeny, whereas germline mutations those that happen in eggs and sperm can.

When the amount or arrangement of nucleotides in a gene is altered, mutations result. A nucleotide can be doubled, deleted, altered, replaced, or any combination of these changes. In general, mutation has little to no impact, but when it does, the change may be fatal or result in disease.A beneficial mutation will rise in frequency within a population until it becomes the norm.

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True or false all of the water that is on the earth will always be here because of the water cycle

Answers

Answer: The statement appears to be true.

Item 12 Which organisms belong to the Kingdom Planta? Select the two correct answers. A. lichens B. fern C. virus D. moss

Answers

B fern

I think about it planta=plants with photosynthesis
And fern is the only plant on there that actually uses photosynthesis

PLEASE HELP ASAP PLEASE!!

Answers

Answer:

B

Explanation:

The answer is B I think

Am not too sure but I think it is B

How are genes passed from parent to children?

Answers

The male and female gametes contain half sets of genes which combine to form a zygote which develops into a fetus. Thus the genes in children are passed through gametes from the parents.

An egg from the mother and sperm from the father combine to form a fetus.  As a result, half of the baby's DNA comes from the mother and half from the father.

The genetic information required for the proteins is encoded in the DNA. There are various genes that code for different proteins. But all the genes do not code for their respective proteins at the same time, they are regulated by a mechanism that can switch the gene on and off as required. This is called gene regulation. This regulation results in the production of products by a pacific gene and is called gene expression.

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What are 2 examples of codominance?

Answers

Examples of animal codominance include spotted chickens with both black and white feather alleles and lone cows that express red and white fur alleles.

Codominance and incomplete dominance are two category of genetic inheritance. Codominance actually means that neither allele can block or camouflage the expression of the other allele. Co-dominance can also occur in less obvious traits such as blood type. Both the A and B alleles of blood type can be expressed simultaneously, resulting in blood type AB. In genetic terms, codominance refers to a mode of inheritance in which two versions of the same gene (alleles) of her are expressed separately to produce different traits in an individua

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1: Describe the Early Ideas about Natural Selection
2: Who was Charles Darwin and what was his contribution to science?

Don't copy from the internet, If you do, Summarize it into an answer no longer than 2-3 sentences and make it your own words

Answers

BIG BRAIN ANSWER:

Before Darwin, a naturalist named Jean-Babtiste Lamarck believed that the environment altered the shape of individuals and that these acquired changes were then inherited. Meanwhile, Charles Darwin was a naturalist on a ship called the HMS Beagle, and he discovered that the beak shape varies among finch species in the Galapagos Islands. He found that the beak of an ancestral species of finch had somehow been transported to these islands, and adapted over time to acquire different food sources that were available, causing variation, and that nature just selected for the most suitable beak shape and against less useful ones.

plantas de herbolaria mexicana que usamos para calmar problemas digestivos??


AYUDA ES PA HOY

Answers

Manzanilla, hinojo, menta puperita, melisa, regaliz, jengibre

What is the direction of the 4 typhoon?

Answers

4 typhoon means a wind threat that has the high speed of wind can attack 118-184 km/h.

What is a typhoon and what is the direction of the typhoon?

Typhoon is defined as a tropical cyclone with a maximum wind of 34 knots or higher. A tropical cyclone with a maximum wind of fewer than 34 knots is called a tropical depression. The difference between the two types of tropical cyclones is just if the maximum wind is less than or above the threshold of 34 knots.

Tropical cyclones (Typhoon ) form between 5 and 30 degrees North latitude that move toward the west. Sometimes the winds in the middle and upper levels of the atmosphere change and move the cyclone toward the north and northwest direction.

So we can conclude that a typhoon is a tropical cyclone that includes a maximum wind of 34 knots or maybe higher.

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What is the importance of gametes?
(A)
They engage in binary fission.
(B)
They allow eukaryotes to reproduce.
(C)
They help to produce proteins for the cell.
They are created when a cell splits into two copies of itself.

Answers

the answer is b because gametes are sex cells so they allow them to reproduce

Which of the following are dwarf planets? Check all that apply.

Ceres
Namaka
Eris
Charon
Haumea
Makemake
Pluto

Answers

Pluto, Eris, Haumea, Ceres, and Makemake are the answers to this question.

Answer:

Other guy is right

Explanation:

i got 100

Transcriptional regulators bind most frequently at the ______ site of DNA. A) major groove. B) minor groove. C) histone complex. D) primary supercoil.

Answers

Answer:Major groove

Explanation:

Transcriptional regulators bind most frequently at the major groove of DNA. The major groove is a wider, more accessible groove on the surface of the DNA helix, while the minor groove is narrower and deeper. Transcriptional regulators, which are proteins that bind to DNA and regulate gene expression, often bind to specific sequences of DNA in the major groove to modulate the transcription of particular genes. A histone complex is a group of proteins that helps package the DNA into a compact structure called chromatin, while the primary supercoil is a twisted, spiral structure that forms when DNA is wrapped around histones.

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What are 4 sister chromatids called?

Answers

Answer:

The answer to this might be tetrad.

Explanation:

1. Naomi has blue eyes (bb), freckles (Ff), dimples (Dd), and curly hair (SS). Naomi is heterozygous for.
eye color and hair texture
freckles and dimples
eye color and dimples
freckles and hair texture

Answers

freckles and dimples

3.3.2 Test (CST): Planet Earth
Question 3 of 10
Which two terms apply to continental crust rather than oceanic crust?
A. Darker in color
B. Less dense
C. Older in age
D. Thinner

Answers

Less dense and Darker in color are  two terms apply to continental crust rather than oceanic crust.

The both option are correct A and B.

What is a characteristic of oceanic crust?

When compared towards the continental crust, the oceanic lithosphere is thin, relatively young, simpler, and chemically richer in magnesium. The oceanic lithosphere is the chilled and crystallised melt fraction that results from the magmatism of the mantle there at semi ridges.

How does the oceanic crust function?

At subduction zones, the oceanic crust is forced back into the mantle, causing this process to happen. At mid-ocean divides and volcanic hotspots, new crust in the form of volcanic rock is created when old oceanic plate is submerged and melts into magma.

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Is calico an example of Codominance?

Answers

Calico is a coat color found in cats that is caused by sex-linked co-dominant alleles.

The calico cat displays a mixed color of red and black, depending on which of her two X chromosomes is inactivated. The allele that codes for orange hair color is dominant, while the black color allele is recessive. In cats, the X chromosome carries the gene that determines coat color, and calico cats have two different versions (or alleles) of this gene. One allele produces orange fur, the other produces black fur.

Codominance actually means that neither allele can block or camouflage the expression of the other allele. Co-dominance can also occur in less obvious traits such as blood type.

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HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Answers

Answer: D. Warm and humid

Explanation:

Just know

Answer:

Warm and Humid (D)

Explanation:

im nervous on that one becasue humid also means hot but like wind so yeah

If a grain of the average apple tree pollen has 17 chromosomes and is used to pollinate an ovule, then the resulting apple seed will contain

Answers

Apple seeds produced from pollen have 17 chromosomes, so these seeds will contain 34 chromosomes.

Seeds are embryonic plants that are covered with a protective coating on the outside. Seed formation is part of the reproductive process in seed plants, namely spermatophytes.

Inside the seed, there is an embryo formed from the meeting between the male gamete (stamen) and the female gamete (pollen). The embryo has its position inside the seed, precisely at the core of the seed, and is surrounded by existing food reserves.

Because the seeds come from the meeting of 2 gametes, the number of chromosomes is 34, half of the male parent and half of the female parent.

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How do you rule a X-linked recessive pedigree?

Answers

Ruling a X-linked recessive pedigree involves analyzing the family history and pattern of inheritance of a trait or disorder to determine if it is likely to be inherited in an X-linked recessive pattern.

The disorder can be identified by:

Construct a pedigree by gathering information about the family history of the trait or disorder. Identify the pattern of inheritance by analyzing the transmission of the trait or disorder within the family. X-linked recessive disorders typically show a pattern of transmission in which affected males are only found in the direct line of descent from a female carrier. If the disorder is only found in males and not females, or if it is found mostly in males, it could be X-linked recessive.Exclude other possible modes of inheritance. Confirm the mode of inheritance by performing genetic testing. Genetic tests such as DNA sequencing or linkage analysis can be used to identify the specific genetic mutation causing the disorder in affected family members. Identify the specific gene mutation. With the help of genetic testing and linkage mapping it's possible to identify the specific gene and the mutation that causes the disorder.

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Why did the author call it as an uneventful chronicle?

Answers

Answer:The author called it an uneventful chronicle because of the couple who most unwisely sacrificed for each other the greatest treasures of their house.

Explanation: This is not biology

Please help me, it’s due tomorrow ☹️

Thank youuu sooo muchh

Answers

Suppose the mother and father are rabbits and the offspring are also rabbits. Let's consider two traits:

Trait 1: Fur Color - Black (B) is dominant, White (b) is recessive

Trait 2: Ear Shape - Long (L) is dominant, Short (l) is recessive

Mother: BBll (homozygous dominant for fur color, homozygous recessive for ear shape)

Father: BbLl (heterozygous for fur color, heterozygous for ear shape)

Punnett Square for Trait 1: Fur Color

B | B

b | b

B | b

b | b

All offspring are heterozygous for fur color (Bb)

Punnett Square for Trait 2: Ear Shape

L | l

l | l

L | l

l | l

All offspring are heterozygous for ear shape (Ll)

How to illustrate the information

Based on the information, the mother was homozygous dominant for fur color and the father was heterozygous, so all babies are heterozygous for fur color.

The mother was homozygous recessive for ear shape and the father was heterozygous, so all babies are heterozygous for ear shape.

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What happens to green light when it hits a plant leaf?

Answers

Explanation:

When light strikes a leaf, it can be absorbed by, reflected from or transmitted through the leaf. Plants appear green because they reflect and transmit slightly more green light than they do blue or red light. Chlorophyll also absorbs green light poorly. For these reasons, green light is sometimes stated as not being useful to plants for photosynthesis. However, green light is still moderately effective since other pigments absorb the light and make it useful for photosynthesis. A more correct statement is that, generally, green light is less efficient at stimulating photosynthesis than blue or red light. In some situations, the greater reflection and transmittance of green light by leaves can be desirable. Green light can better penetrate a plant canopy and thus reach lower leaves. This can, in theory at least, reduce lower-leaf loss. However, few LED arrays contain green LEDs because they are less efficient than blue and red LEDs from both an electrical and plant response perspective.

The genetic information in a gamete is identical to one of the original separated sets of chromosomes in the parent.

1.True 2.False

Answers

The given statement " the genetic information in a gamete is identical to one of the original separated sets of chromosomes in the parent" is true because gametes contain only one of a chromosome pair that exists in the diplod parents cells.

Hence, the correct option is True.

What are chromosomes?

A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. The very long, thin DNA fibers in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.

During the process of gamete formation or meiosis in parental sex cells, the pair of chromosomes in the parent cells divide to produce daughter cells or gametes containing only singer chromosomes,

Thus, the gametes contain only one set of chromosomes identical to the parent's chromosomes.

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Answer: it’s True<3

Explanation: WHY HASNT YALL BE ONLINE!!!

Classify each item as a first, second, or third line of defense.
First Line of Defense:
Second Line of Defense:
Third Line of Defense:
-Skin
-Mucosal membranes
-Macrophages
-Eosinophils
-Inflammation
-Fever
-Humoral immunity
-Cell-mediated immunity
-Lymphocytes
-Antibodies

Answers

Put each item into the first, second, and third category of lines of defense. The initial line of defense is made up of the skin and mucosal membranes. Macrophages serve as the second line of defense.

What is a good illustration of humoral immunity?

Innate humoral immunity refers to innate immunity that is protein-based. The body's complement system, interferon, and interleukin-1 (which induces fever) are a few examples.

How does humoral immunity function?

Antibody-mediated immunity is another name for homunculus immunity. B cells will develop into blood B cells, which can manufacture antibodies against a particular antigen, with the aid of helper T cells. The body's immune immune system responds to pathogen antigens that are in the environment or outside of the diseased cells.

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what happens to excess fatty acid and glycerol in the body​

Answers

The liver prepares for storage in the subcutaneous tissue and other storage depots when excess fatty acid and glycerol are in the body​.

Lipogenesis is the metabolic process of converting and storing fatty acid and glycerol are converted and stored in depots. When the energy level decreases they are converted back into fats and this process is called lipolysis.

The liver is responsible for fat metabolism and the amalgam of lipoproteins. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids, and glycerol. This process takes place in the cytoplasm.

Triglycerides are a type of lipid found in the blood. When you consume food the unused fatty acid or calories are stored in the form of triglycerides stored in fat cells. Excess of triglycerides can lead to hypertriglyceridemia.

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In a popular online role playing game, players can create detailed designs for their character's "costumes," or appearance. Boubacar sets up a website where players can buy and sell these costumes online. Information about the number of people who visited the website and the number of costumes purchased in a single day is listed below. 120 visitors purchased no costume. 235 visitors purchased exactly one costume. 3 visitors purchased more than one costume. Based on these results, express the probability that the next person will purchase no costume as a percent to the nearest whole number.

Answers

Answer:

34%

Explanation:

120 + 235 +3 = 358

120/358= .335

.335 = 34%

Answer:

124/431

Explanation:

I'm pretty sure this right

or
Scientists theorize that all life started with simple prokaryotic organisms. New species continue to evolve
from existing species, creating the variety of life we see today. The following diagram shows the basic
process.
fungi
(oukaryotic,
unicellular,
multicellular)
protista
(eukaryotic,
uni-or
multicellular)
eubacteria
(prokaryotic,
unicellular)
animalia
(eukaryotic
multicellular)
universal
ancestor
plantae
(eukaryotic
multicellular)
archaebacteria
(prokaryotic,
unicellular)
Based on this diagram, do you think that organisms of the same order will share a stronger evolutionary
relationship than organisms that share only the same phylum? Explain your reasoning using the results of
your investigation.

Answers

The evolutionary relationship is stronger the more similarity. The taxonomical hierarchy's lower levels show more similarity. Thus, the organisms of the same species exhibit the greatest degree of similarity.

What is taxonomical hierarchy's?

Taxonomic hierarchy is an organizational structure used to classify or categorize living organisms.

Of course, organisms that belong to the same order will have a closer evolutionary bond than those that belong to the same phylum alone. Taxonomy groups organisms in various ways, as we all are aware. Kingdoms are the highest level of classification, followed by phyla, classes, orders, families, and species. The similarities between organisms will become more specific with each succeeding unit. In other words, when organisms are further subclassified, they share similar traits.
The order of organisms belonging to the same phylum is not required. The class, phylum, and kingdom of any two organisms from the same order, however, will always be the same.
For instance, the cockroach order Blattodea and the human order Primates. These two belong to the phylum chordata. But we are aware of the differences between cockroaches and people.
However, another member of the primate order, such as the monkey and the chimpanzee, have stronger evolutionary ties to humans and share more traits with them.
Therefore, the evolutionary relationship is stronger the more similarity. The taxonomical hierarchy's lower levels show more similarity. Thus, the organisms of the same species exhibit the greatest degree of similarity.

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What are two ways that reproduction happens in living organisms?

Answers

There are two techniques by which living things imitate, agamic or sexual.

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