what is ostia in biology​

Answers

Answer 1

Answer:

An ostium (plural ostia) in anatomy is a small opening or orifice.

Explanation:

Simple term for explaining an opening

Answer 2
Origin: L. (Science: anatomy) An opening; a passage. An opening in organic sponges that allow water to enter the organism. (hope this helps you)

Related Questions

A scientist grew an Elodea plant in a freshwater aquarium. She removed a leaf from the plant and placed the leaf in a hypertonic solution containing 8% salt in order to observe what happened to the cells within the leaf. When she looked at the cells under a microscope, she noticed that the cells in the leaf shrunk. Which statement best explains what caused the cells to shrink?

The hypertonic solution caused the water in the cell to move from the cytoplasm into the nucleus.
The salt moved from the hypertonic solution into the cell and chemically bonded with the water.
The salt within the cell moved through the cell membrane into the solution with the higher salt concentration.
The water within the cell moved through the cell membrane into the solution with the lower water concentration.

Answers

Answer:

The water within the cell moved through the cell membrane into the solution with the lower water concentration.

Explanation:

According to this question, a scientist removed the leaf of a plant originally grown in a freshwater aquarium and placed it in a hypertonic solution containing 8% salt. Firstly, A HYPERTONIC SOLUTION is that solution which contains a higher solute concentration than that of the intracellular environment.

Due to this concentration gradient i.e. difference in concentration, OSMOSIS process will be triggered. Osmosis is the movement of water from the region of low solute concentration (the leaf cells) to a high solute concentration (the salt solution) via a semi-permeable membrane (cell membrane).

Therefore, osmotic process causes water to move from the leaf cells into the salt solution via the cell membrane. hence, causing the cells of the leaf to shrink.

Give one word answer for the following. responsible for hereditary characteristics in living organisms.

Answers

Answer:

genes

Explanation:

Organisms inherit genetic material from their parents in the form of homologous chromosomes, containing a unique combination of DNA sequences that code for genes. The specific location of a DNA sequence within a chromosome is known as a locus.

How do the circulatory and nervous systems work together to maintain homeostasis | ASAP

Answers

The cardiovascular system helps maintain homeostasis by continually supplying the central nervous system--the brain and spinal cord--with oxygen and glucose. Brain cells start dying after just one minute without oxygen. The brain is the control center for all of the body's homeostatic processes.

Answer:

The circulatory and the nervous systems work together to maintain homeostasis because the circulatory system gives your brain a lot of oxygen and glucose while your brain regulates your heart rate and blood pressure. Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain  homeostasis.

Hope this helps!

Can someone answer this!!!!!!

Answers

Answer:

Diffusion.

Explanation:

Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration.

When the [tex]O_{2}[/tex] moves in, the [tex]CO_{2}[/tex] moves out.

Provide evidence to support the claim that viruses fall on the border between living and nonliving.

Answers

Answer:

Just like living organisms, viruses use genetic material such as DNA or RNA, but unlike living things, they cannot reproduce using mitosis, binary fission or meiosis. Instead, they simply insert the genetic material into a living cell and then replicate their genetic material along with the cell's in order to create more viruses.

One way that cells maintain homeostasis is by controlling the movement of substances across the cell membrane.

Answers

Answer:

True

Explanation:

One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances. Proteins in the cell membrane include cell-surface markers, receptor proteins, enzymes, and transport proteins.

Match the following.

1. bacteria and fungi that break down dead matter
decomposers
2. the basic relationships that show how a community of plants, animals, and bacteria live and grow and how these living things are dependent on each other as well as the Sun, soil, and other nonliving parts of their environment; a cycle of relationships
ecosystem
3. line of plants and animals that shows the order in which organisms are eaten
food web
4. a diagram that shows the connections among food chains in an ecosystem
tertiary consumer
5. organisms that eat producers
primary consumer
6. organisms that eat primary consumers
food chain
7. predator that eats secondary consumers
secondary consumer

Answers

Answer:

1. bacteria and fungi that break down

Decomposers

2. the basic relationships that show how a community of plants, animals, and bacteria live and grow and how these living things are dependent on each other as well as the Sun, soil, and other nonliving parts of their environment; a cycle  

Ecosystem

3. line of plants and animals that shows the order in which organisms are eaten of relationships

Food chain

4. a diagram that shows the connections among food chains in an ecosystem

Food web

5. organisms that eat producers

Primary consumers

6. organisms that eat primary consumers

Secondary consumers

7. predator that eats secondary consumers

Tertairy Consumers

Describe how water is important to plants in terms of:

i) making food in plants
ii) the plant's shape
iii) hydrolysis and dehydration

Answers

Answer:

i) In terms of food production in plants, water is essential to plants as it is the evaporation of water that occurs in leaves that allows carbon dioxide to enter and to begin photosynthesis.

(ii) In terms of the shape of the plant, water is important to plants as the hydration of the cells of a plant allows the cell walls to retain their shape and thus give structure to the plant.

(iii) In terms of hydrolysis and dehydration, water is essential for plants because water is not a photosynthesis reactant or respiratory product.

Explanation:

i) Water is important in terms of making food in plants:

Water is required for the germination of seeds and as soon as growth starts water serves as a carrier in the distribution of mineral nutrients and plant food.

ii) Water is important in terms of the plant's shape:

Responsible for turgor pressure in cells (Like air in an inflated balloon, water is responsible for the fullness and firmness of plant tissue. Turgor is needed to maintain cell shape and ensure cell growth.)

iii) Water is important in terms of hydrolysis and dehydration:

During the process of photosynthesis, six molecules of carbon dioxide and six molecules of water react in the presence of sunlight to form one glucose molecule and six molecules of oxygen.

The role of water is to release oxygen (O) from the water molecule into the atmosphere in the form of oxygen gas.

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Which of the following is NOT a
form in which water can exist on
Earth?
A. gas
B. solid
C. plasma
D. liquid

Answers

Answer:

plasma

Explanation:

becaus gas is steam you can boil water and get steam solid because of ice and liquid because of water

The answer is plasma

Wetlands are natural parts of watershed systems. Wetlands provide benefits many benefits. Which of these is a way that wetlands directly benefit humans?

- provide nesting grounds for birds

- decrease erosion along shorelines

- reduce flooding in adjacent towns

- increase biodiversity near the ocean

Answers

wetlands help us by reducing flooding in adjacent towns

Answer:

the answer is c because it soaks up the water so it cant flood the towns

Explanation:

What is a phenotype???

Answers

Answer:

the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.

A genotype is the genetic constitution of an individual organism.

Explanation:

7. What is the water vapor concentration at the tropopause?

Answers

Answer:

99 %

The troposphere contains 99 % of the water vapor in the atmosphere. Water vapor concentrations vary with latitude. They are greatest above the tropics, where they may be as high as 3 %, and decrease toward the polar regions.

Explanation:

hope this helps <3

research and tell the story about a case in which bones helped identify a missing person or helped solve a crome

Answers

Answer:

footsteps

Explanation:

the bones leave footsteps in the ground and that is what detectives use to solve a missing or help solve a crimescene

What type of electron is available to form bonds?

Answers

Answer:

The electrons that are available to form bonds are known as valence electrons.

Explanation:

The electrons that are available to form bonds are known as valence electrons. I hope this answer is helpful.

The type of electron available to form bonds is a valence electron

What type of electron is available to form bonds?

Valence electrons are the electrons in the outermost energy level or shell of an atom. These electrons are involved in the formation of chemical bonds between atoms.

Valence electrons are responsible for determining the chemical properties and reactivity of an element. When atoms come together to form chemical bonds, they do so by sharing, gaining, or losing valence electrons. The interaction of valence electrons between atoms allows for the formation of covalent bonds, ionic bonds, or metallic bonds, depending on the specific circumstances.

Therefore, valence electrons are crucial in the process of bonding between atoms.

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Which part of the DNA structure provides the genetic code for our traits?
Deoxyribose Sugar
Nitrogen Bases
Double Helix
Phosphate

Answers

Answer:

Phosphate

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Only eukaryotic cells have
cytoplasm
membrane bound organelles
DNA
ribosomes

Answers

membrane bound organelles

b) How does the thermal energy of solid water change as it melts?

Answers

When ice melts, it’s temperature remains constant until all the ice turns to water.

Answer:

Hi! So solid water would be ice, the particles in ice are very close together which makes it firm and makes it ice. When you put the ice in the microwave, (Microwave has heat so it would be thermal energy!) the particles in the ice mover a tiny bit away from each other which then makes it water. Then, if you boil the water, the particles that are in the water move far away from each other and it turns into steam!

Hope this helps!! Stay safe! <3

The Gulf Stream is a surface current in the Atlantic Ocean that flows northward from the Caribbean Sea and the Gulf of Mexico. It feeds another current that reaches northern Europe. Which of these events would cause the greatest changes to the path and strength of the Gulf Stream?(please help)


A. a strong earthquake that occurs on the floor of the Atlantic Ocean

B. an increase in the volume of river water that flows into the Gulf of Mexico

C. a reversal of direction in the prevailing winds over the Atlantic Ocean

D. a slight increase in the salinity of the Atlantic Ocean

Answers

Answer:

It constitutes the northeastward extension of the Gulf Stream; the latter issues from the Gulf of Mexico and gradually emerges as the North Atlantic Current in mid-ocean. It is composed of several broad currents with speeds of about 0.2 knots, as compared with the Gulf Stream's rather concentrated flow at 1 to 6 knots.

Explanation:

Answer:

B. an increase in the volume of river water that flows into the Gulf of Mexico

What are the reactants and products of the light independent reactions?​

Answers

Answer:

In photosynthesis, oxygen, carbon dioxide, ATP, and NADPH are reactants. GA3P and water are products. In photosynthesis, chlorophyll, water, and carbon dioxide are reactants.

The reactants and products of the light-dependent reactions of photosynthesis would be as follows:

Reactant: water, radiant energy, ADP, and NADP+

Products: oxygen gas, ATP, and NADPH

In the light reaction, radiant energy excites the electrons of chlorophyll molecules. The excitation causes the electrons to be knocked off the chlorophyll molecule and the energy of the electrons is used to convert ADP to ATP and NADP+ to NADPH.

The space left by the excited electrons is filled by electrons from water molecules with oxygen from the water molecule being released as a result.

More on the light reaction of photosynthesis can be found here: https://brainly.com/question/16710103

Zero elevation is also known as
A. peak
B.profile
C.sea level
D.base​

Answers

the zero-elevation surface is usually taken as sea level.

How are these genes related?

Answers

C is your answer because when genes are close together on the same chromosome there strongly linked meaning that that gene will most likely be inherited as a unit more frequently than others

Summarize the process of sexual reproduction and explain how variations of inherited traits can increase or decrease an organism’s chance of survival

Answers

Answer:

Explanation:

A Human cell has 46 chromosomes. (I’ll use humans to keep things simple). In sexual reproduction both humans have 23 chromosomes, in their sex cells. (Men have 23 in a sperm and women have 23 in an egg cell). These half cells merge to create 1 unique cell, that has characteristics of both male and female. The cells multiply and then a baby is born with a unique set of genes. These cause variations, and remember these variations can carry from generation to generation. As for how variations can increase a chance for survival, variations allow unique gene sets to be made, so that in case of a disease (in this case I’ll use a disease, but it could also include harsh environmental conditions), these unique gene sets may give an individual natural immunity to the disease. How can a variation decrease an organisms chance for survival? Well, s there are many ways that a unique gene set can make it difficult to survive. For example a genetic disease your family has had a history with. These diseases include, but are not limited to, cancer, diabetes, and schizophrenia.

Why should we be concerned about the disappearance of phytoplankton in the oceans

Answers

Answer:

The loss of phytoplankton is a huge problem for marine food chains, says Worm, because every creature in the ocean either eats phytoplankton or eats other organisms that depend on it.

Hope this helps!

Ivan reads a story about a population of mice that become stranded in a dark jungle. Some mice are dark brown, while others are white. According to the process of natural selection, predict which mice would be more successful living in a dark jungle. Explain natural selection and your prediction.

Answers

Answer:

The dark brown mice would be more successful in a dark jungle since the darker color of their fur would make it hard for predators to spot them.

The process of natural selection, predict which mice would be more successful living in a dark jungle is de dark brown.

What is natural selection?

Natural selection is one of the main mechanisms of evolution. In a very simple way, we can say that natural selection is a process in which the fittest organisms are selected, survive in the environment, reproduce and pass their characteristics on to their descendants.

In this case, as it is a very dark forest, an animal with a white coat will attract more attention while an animal with a dark brown color will only be camouflaged in the environment.

See more about natural selection at brainly.com/question/9830102

Which type of energy change causes this leaf to grow? A. Thermal energy is transformed into potential energy. B. Thermal energy is transferred to the leaf. C. Electromagnetic energy is transformed into chemical energy. D. Electromagnetic energy is transferred to the leaf.

Answers

Answer:

C. Electromagnetic energy is transformed into chemical energy

Explanation:

Growth is one of the characteristics of living things. It refers to the increase of an organism. A leaf is part of a plant, which is a photosynthetic organism i.e. an organism capable of producing its own food using energy from sunlight. Light energy is a part of the ELECTROMAGNETIC ENERGY.

This light energy is used to synthesize glucose (food) via photosynthesis. The glucose, which stores chemical energy in its bond is then broken down to yield ATP used for growth. Hence, the transformation of electromagnetic energy to light energy is how a leaf grow.

it is C.  Electromagnetic energy is transformed into chemical energy.

Which of the following is NOT a characteristic of all living things?
Ability to reproduce
Ability to move
O Growth and development
Homeostasis

Answers

Answer:

homeostatis

Explanation:

The answer should be homeostatis. Organisms can not do this.

Answer:

Ability to move

Explanation:

All organism species have the ability to reproduce, grow and develop, and maintain homeostasis (for example, sweating). Not all organisms can move, however. Cacti, for instance, are stiff and do not move on their own, yet are still alive.

Natasha is making a model of cellular respiration. Her model shows the pathway followed when there is enough oxygen available. What does Natasha’s model show?

A
an aerobic pathway consisting of glycolysis and fermentation

B
an anaerobic pathway consisting of glycolysis and fermentation

C
an aerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain

D
an anaerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain

Answers

Answer:

An aerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain

Explanation:

It's aerobic because there is oxygen available while if it were anaerobic, no oxygen would be present.

Hope it helps :)

Natasha is making a model of cellular respiration. Her model shows the pathway followed when there is enough oxygen available, so her model shows it is an aerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain, which is option C.

What is the significance of respiration in living beings?

Cellular respiration is either carried out when there is an abundance of oxygen, called "aerobic respiration," when there is enough oxygen present to lead to the running of the glycolysis, Krebs cycle, and electron transport chain to form energy, which is in a normal condition of a cell. while fermentation takes place when oxygen is not enough.

Hence, Natasha is making a model of cellular respiration. Her model shows the pathway followed when there is enough oxygen available, so her model shows it is an aerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain, which is option C.

Learn more about respiration by clicking here.

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How does mutation increase chances for survival? Please help me.

Answers

Answer:

These mutations can increase an organism's chance for survival and usually occur over a course of many generations producing offspring (or babies) with the helpful mutation. ... This would allow you to mate and produce offspring because you would have survived for longer lifespans.

Explanation:

Name two common causes of death other than tsunamis for people who experience major earthquakes.

Answers

Answer:

volcanos caused by the earthquakes, and, or dying from the earthquake itself

Explanation:

Heart attack
Ok thanks for getting back off ttyyyyt and I’m just wondering what time you will guys do you want to me I can get you a little early in the morning I will get

In your own words, explain why an organism would require all four of the main biomolecules. What would occur if any of these biomolecules were missing? Are any of the biomolecules more important than the others? Is there one that we could live without?

Answers

Answer:

I like yo cut gggggggggggg

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