What are alveoli? A. Carbon dioxide molecules B. Part of a red blood cell C. Tubes that connect to the lungs D. Air sacs used during respiration

Answers

Answer 1

Answer:

D

Explanation:

Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going.


Related Questions

Which statement best describes Earth’s outer layer underneath the surface in the image?

Answers

Answer:

Underneath both the soil and the ocean, Earth's outer layer is made of sand and water. Underneath both the soil and the ocean, Earth's outer layer is made of hard, solid rock.

The answer is gonna be b, I know cause I just took it and got it right and I’m also smart

Why is the classification species not considered a group

Answers

Answer:

All living organisms are classified into groups based on very basic, shared characteristics. Organisms within each group are then further divided into smaller groups.

There are five kingdoms: • Animals • Plants • Fungus • Protist • Bacteria Scientists classify animals together because they have similar characteristics such as they eat other living things and have many cells. As you can see from the chart, kingdoms are divided into groups called phyla.

hope it helps ya mate.

hoping to have a brainliest.

The classification of species is not considered a group because each species is a separate type of organism. The correct option is D.

What are groups and species?

Group is the level of taxonomy in which the organism is present, which has someone's character. Like in the insect group, all insects are present.

Species are the largest level of the taxonomy of the organism. Species are animals or plants or individuals that have the same characteristics and those that can mate with each other and form fertile offspring.

Groups contain numerous species. Like in insects, the insects contain numerous insects that are very different from each other. Like, bees and beetles are very different from each other.

Thus, the correct option is D. Each species is a separate type of organism.

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The question is incomplete. Your most probably complete question is given below:

A. Each species lacks the characteristics of the levels above.

B. Each species is an individual organism.

C. Each species shares characteristics with other species.

D. Each species is a separate type of organism.

Oligomycin A is an antibiotic that works by blocking a proton (H ) channel in ATP synthase, inhibiting the action of the enzyme. The primary effect of this antibiotic is: Group of answer choices decreased ATP synthesis due to a decreased hydrogen ion gradient across the inner mitochondrial membrane. increased ATP synthesis due to an increased hydrogen ion gradient across the inner mitochondrial membrane. decreased ATP synthesis due to the inhibition of oxidative phosphorylation of ADP. increased ATP synthesis due to the promotion of oxidative phosphorylation of ADP.

Answers

Answer:

Decreased ATP synthesis due to the inhibition of oxidative phosphorylation of ADP

Explanation:

If the antibiotic inhibits the action of ATP synthase, it will decrease ATP synthesis.

ATP synthase has the main function of synthesizing ATP from the oxidative phosphorylation of ADP.

In oxidative phosphorylation, ATP is produced from the transfer of electrons from NADH and FADH2. A chemical gradient is created, allowing for ATP synthase to create ATP.

So, the correct answer is that there will be decreased ATP synthesis due to the inhibition of oxidative phosphorylation of ADP.

The fur that a bird uses in its nest is …


a) abiotic

b) biotic

c) neither


plz hurry

Answers

Abiotic hope it helps !

Which of the following best describes a carbohydrate?

 A. Carbohydrates are composed of amino acid monomers and are involved in cell signaling, cell transport, immune responses, and the cell cycle.

 B. Carbohydrates are organic macromolecules that are made up of carbon, hydrogen, and oxygen atoms and are used for energy storage or as structural molecules.

 C. Carbohydrates always consist of a five-carbon sugar, a nitrogenous base, and one or more phosphate groups and are used to store genetic information.

 D. Carbohydrates are organic macromolecules that are insoluble in water and have the ability to store energy for extended periods of time.

Answers

Answer:  C.)  Carbohydrates always consist of a five-carbon sugar, a nitrogenous base, and one or more phosphate groups and are used to store genetic information.

Explanation:

Pls help!! Scientists have observed a sudden explosion in the sun followed by rapid changes in the sun's brightness. Which of these events would most likely occur due to this solar condition? (2 points) Group of answer choices increase in atmospheric pollution on Earth change in Earth's climatic pattern change in wind velocity increase in number of solar eclipses

Answers

Answer:

Change in Earth's climatic pattern.

Answer: Change in earths climactic pattern

Explanation:Got it correct on the test

HELP PLEASE BRAINLIST

Answers

d. 1 female has freckles
The answer is D
Dddddd

what ocean creatures are at risk from ocean acidification

Answers

Answer: corals, crabs, oysters and urchins

Explanation:

Explanation:

what ocean creatures are at risk from ocean acidification

Choose from these ecosystems:

Prairies

Forests

Beaches

Dunes

Lakes

Ponds

Rivers

Streams

Wetlands

Coral Reefs

Estuaries

Salt Marshes

Mangrove Swamps
Florida Ecosystems



Once given your Florida ecosystem, you will research and present the topics listed below about your ecosystem. Please include visuals.


Briefly tell us where in Florida your ecosystem is often found and general characteristics

---average amount of water

---general physical characteristics

---unique characteristics of your ecosystem


List and describe 3 common producers found in your ecosystem

---include information such as what type of species prey on these producers, what the producer needs in order to survive and thrive, etc.)


List and describe 6 common consumers found in your ecosystem

---In your descriptions please include what the animals are preying on, where they build shelters, what their niche is, etc.)


Try to find at least one decomposer and/or scavenger in your ecosystem

--- What is it eating/decomposing? How is this helpful to the ecosystem?


List and describe one example of mutualism, one example of commensalism and one example of parasitism in your ecosystem

---Name the species involved and explain the relationships


List any endangered, threatened or extinct species from that ecosystem



Explain 1 food chain in your ecosystem



Explain competition between species in your ecosystem


please help fast am giving 20 points and brainliest

Answers

Answer:

Wetlands and others competition

Precipitation that does not permeate the ground runs off the surface quickly. It forms small streams that widen and become longer. Where does the water from these streams drain?

A. springs
B. wells
C. aquifers
D. rivers

Answers

Answer:

rivers because smaller bodies of water always drain into bigger ones

Rivers because of their long streams

Identify which of the following statements does NOT support the
theory of Natural Selection.

A. populations tend to produce more individuals than the
environment can support.

B. individuals adapt to their environments and, thereby, evolve.

C. genetic variation exists within populations.

D. individuals who survive longer tend to leave more offspring than
those who die young.

Answers

Answer:D. individuals who survive longer tend to leave more offspring than

those who die young.

Explanation:

If there are 3000 calories of energy available at the zooplankton, how much energy will there be at the shark?

Answers

Answer:

30 calories of energy

Explanation:

In an aquatic ecosystem, zooplanktons are primary consumer i.e. they feed on primary producers e.g phytoplanktons. They are fed on by smaller fishes e.g tilapia, which in turn is fed on by sharks. Based on this, we have a food chain as follows:

phytoplankton → zooplankton → tilapia fish → shark

From this food chain, it appears that ZOOPLANKTON is a primary consumer while SHARK is a tertiary consumer. Since only about 10% of energy is transferred to each trophic level when organisms feed on one another, if there are 3000 calories of energy available at the zooplankton, the following will be available for sharks:

For secondary consumer = 10/100 × 3000 = 300 calories for tilapia fish

For tertiary consumer = 10/100 × 300 = 30 calories for shark.

how do i get rid of hicups?????

Answers

Answer:

just hold your breath for as long as you can

Explanation:

Answer:

Explanation:

Hold your breath and swallow three times.

Breathe into a paper bag but stop before you get lightheaded!

Drink a glass of water quickly.

Swallow a teaspoon of sugar.

Pull on your tongue.

Gargle with water.

i just asked go ogle :D

Why are shadows longer in the morning and evening?
Make sure you give a full, detailed answer, not just one sentence.

Answers

Answer:

Shadows are longest in the early morning and late afternoon/early evening when the sun appears low in the sky. As the Earth rotates on its axis, the sun hits each location in the morning at an angle. ... As Earth continues to spin toward sunset, the increasing angle causes shadows to lengthen!

Explanation:

Hope this helps! Have a good day!.....or not...its up to you- <3

Let’s say two items which are balls, are very identical and were dropped at the same times and same height, fell at different times. The pink ball fell first while the blue one fell last. What could have caused the pink ball to fall first?

Answers

Answer:

This could mean that the pink ball had a little bit more air in it than the blue ball. They could also have been dropped at the same time, but they were dropped on a hill, and the pink one landed first at the top of the hill, and the blue one landed second at the bottom of the hill.

Explanation:

Have a nice day! :)

What is pretexting? How is this used?

Answers

Answer:

Pretexting is a method of inventing a scenario to convince victims to divulge information they should not divulge. Pretexting is often used against corporations that retain client data, such as banks, credit card companies, utilities, and the transportation industry.

Answer:

Pretexting is a social engineering tactic that uses deception and false motives. ... The data collected is then used to manipulate and deceive the victim. The main goal of the threat actor is to gain the target's trust and exploit it for financial or political gain. A pretext attack can occur in person or over the phone.

Explanation:

Hopes this helps. Mark as brainlest plz!

Which of the following is true regarding Darwin's theory of evolution?
A. Acquired traits are always passed on to the offspring
B. Organisms develop favorable adaptations based on a need
C. Pure chance determines which species evolve
D. Individuals pass on adaptations to their offspring, due to natural selection

Answers

Answer:D

Explanation:

Evolution

Individuals pass on adaptations to their offspring, due to natural selection. The correct option is D.

What is Darwin's theory of evolution?

The English naturalist Charles Darwin and others developed the Darwinism theory of biological evolution, which contends that all species of organisms arise and develop through the natural selection of minute, inherited variations that improve the individual's capacity for competition, survival, and reproduction.

Darwin claimed that all species share a common origin, that species can change through time, and that new species develop from existing ones.

Charles Darwin, a naturalist of the 19th century, investigated the theory of natural selection.

Natural selection provides an explanation for how a species' genetic features might evolve through time. This could result in speciation, or the creation of a new, separate species.

Thus, the correct option is D.

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T or F 7. Trp Operon - which determine the formation and arrangement of body parts in
multicellular organisms, control gene expression by regulation of - DNA translation

Answers

Answer:

Trp Operon.

Explanation:

Trp Operon determines to control gene expression by regulation of DNA translation. The trp operon is found in E. coli bacteria, is a group of genes that encode biosynthetic enzymes for the production of amino acid tryptophan. The trp operon refers to turned "on" when tryptophan levels are low whereas refers to turned "off" when tryptophan levels are high. The trp operon is controlled and regulated by the trp repressor.

which of these is an example of water pollution?

a. a clear/cut forest
b. an eroded hillside
c. arid land
d. agricultural runoff

Answers

Answer:

d. agricultural runoff

Explanation:

makes most sense

Which of the following answer choices best explains what process lead to each cells' unique structures
and functions?
Choose 1 answer:
A series of specific mutations allowed the brain and kidney cells to become specialized for the
structures and functions they possess.
B
Apoptosis allowed the brain and kidney cells to become specialized for the structures and
functions they possess.
Differentiation allowed the brain and kidney cells to become specialized for the struct and
functions they possess.
During fertilization, a sperm cell fused with an egg cell, resulting in a zygote.

Answers

Answer: Differentiation allowed the brain and kidney cells to become specialized for the structures and functions they possess.

Explanation:

Differentiation allowed the brain and kidney cells to become specialized for the structure and functions they possess.

CELLULAR DIFFERENTIATION:

Cellular differentiation is the process whereby an unspecialized cell (stem cell) gives rise to a cell that is more specific in function.

Stem cells are said to be totipotent meaning that they are capable of dividing into special (differentiated) cells.

Cell differentiation is brought about by gene expression mechanism in cells i.e. some genes are expressed in some cells and not expressed in others.

Since all cells contain the same type of gene, they are bound to function the same without difference in the type of gene expressed in them.

Cell differentiation allows different cells in a multicellular organism to contain different structures and ultimately perform different functions.

Therefore, differentiation allowed the brain and kidney cells to become specialized for the structure and functions they possess.

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I will give brain to correct answer!

When guard cells are full, they bulge. This increases the
size of the gap between them and opens the hole in the
leaf.
Which object is the best model of a guard cell?

A.) Straw

B.) Garden hose

C.) Water Balloon

D.) Strainer

Answers

C water balloon isn’t it

The best model of a guard cell is Water Balloon. Thus, option "C" is  the correct answer.

What is Transpiration?

Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.

Transpiration is essentially evaporation of water from plant leaves. Transpiration is important because water is needed for photosynthesis and because water cools a plant off.

Thus, option "C" is  the correct answer.

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THIS IS ALSO PAST DUE PLEASE ANYONE HELP
Explain how limiting growth is advantageous for the goldfish’s survival in a home aquarium

Answers

The goldfish is a pet. In a home it is in a secure taken care of aquarium and will only grow to fit the size of the aquarium it is in.

GIVING MY 1496 POINTS AWAY!! (ANSWER ARE LISTED)

Identify the characteristics of plant-like protists. Check all that apply.
all contain cell walls
autotrophs
unicellular
all are stationary

(Answers: autotrophs, unicellular)

Answers

Answer:

autotrophs, unicellular

Explanation:

Answer:

unicellular

all contain cell walls

autotroph

Haven't done this in a year so i don't know if it's correct but-

hope this helps!!

A partir del concepto de osmorregulación cual es la regulación hídrica y salinas en peces de agua dulce y salada

Answers

Answer:

Absorben o excretan agua salada para mantener la homeostasis.

Explicación:

La regulación hídrica y salina en peces de agua dulce y salada se realiza según las condiciones ambientales. Los peces pueden pasar mucha orina muy diluida en la que hay menos solutos o sales, y logran el equilibrio de electrolitos en el cuerpo mediante el transporte activo de sales a través de las branquias. En un ambiente marino hipertónico, los peces de agua salada comienzan a beber agua de mar y mantienen el equilibrio electrolítico mientras excretan el exceso de sales a través de sus branquias y su orina.

Cosas no vivas que afectan seres vivos

Answers

okay thank you I semi dont understand but hey :)

Answer:

Non-living things are inanimate objects or forces with the ability to influence, shape, alter a habitat, and impact its life. Some examples of non-living things include rocks, water, weather, climate, and natural events such as rockfalls or earthquakes.

Explanation:

Living and Non-Living Activity Guide - National Park Servicehttps://www.nps.gov › teachers › lessonplans ›

A clade is a group of organisms that includes an ancestor species and all of its descendants.

True
False

Answers

Answer:

True

Explanation:

Within a cladogram, a branch that includes a single common ancestor and all of its descendants is called a clade.

The image shows a practice carried out by members of a certain culture. Which aspect of human culture is illustrated in the image?
A. Economy
B. Government
C. Religion
D. Language

Answers

B government, because it’s a judge

Government is the aspect of human culture which is illustrated in the image. Therefore, option (B) is correct.

Human culture, judge, and government are interconnected concepts that influence and shape each other in various ways. Culture refers to the shared beliefs, values, customs, behaviors, and artifacts that characterize a society. Judges are responsible for interpreting and enforcing the laws that govern a society, while government is responsible for creating and implementing those laws.

Culture influences the way judges interpret laws, as they are often guided by cultural norms and values when making decisions. At the same time, judges and government can also shape culture through their decisions and policies, such as when they legalize or criminalize certain behaviors.

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How many nucleotides are required for a 459-amino acid polypeptide? Just enter the

number.

Answers

Answer:

The correct answer is 1377.

Explanation:

Peptides and proteins are made in the process of Translation. For this to happen, a molecule of mRNA containing a nucleotide sequence is read by a structure called ribosome. Each group of three nucleotides from the mRNA form a codon, and each codon has an anticodon in the tRNA molecule that will ultimately code for a specific amino acid (except for stop codons -when they appear in the sequence, translation stops-). Taking all of this into consideration, if 3 nucleotides lead to 1 amino acid, to have a 459-amino acid polypeptide it would require 1377 nucleotides (without counting the 3 nucleotides from the stop codon).

Read the passage. Then explain why the circulatory system of a grasshopper does not need to carry gases to and from the grasshopper's cells.
Passage
The diagram shows part of a grasshopper's respiratory system. Air passes into and out of openings in its sides. These openings are connected to tubes and air sacs that fill with air. The air tubes branch into tiny tubes that spread out and are found close to all cells. So, unlike other animals, the grasshopper does not exchange gases using its circulatory system.

PLS ANSWER ASAP

Answers

Answer:

In vertebrates, the circulatory system is responsible for transporting oxygen to all the tissues and removing carbon dioxide from them. ... In the grasshopper, exchange of oxygen and carbon dioxide occurs in the tracheal system. Hemolymph plays no part in the process.

Explanation:

What's a good way to study for AP biology?​

Answers

study about splitting cells. The process is difficult to remember.

Definitely focus on splitting cells
Other Questions
Please help with this using the chain rule SUPPOSE you are starting a business of selling jewelry online, what kind of audience will you talk with ? What strategies will you use to persuade your audience how will you create your own market PLEASE HELP!!!Why should you modify your approach to evaluating literature, based on the form of the literary work?A.Different forms of literature hold different levels of value with readers.B. Different forms of literature require different key elements to succeed.C. Different forms of literature tend to be written in different languages.D. Different forms of literature use different narrators with different points of view. Probation, house arrest and incarceration falls into the "Corrections" component of the criminal justice system.A. TrueB. False Help please thanks so much l-Ready Put gold bars into the machine toproduce exactly 21 gold cats.Tap the reset button to start over.cey CarGo Why does the "encounter" depicted in this cartoon seem so "unnatural"? Revise these three sentences by addition appropriate transition words or phrases at the beginning of each sentence to clearly connect the ideas of the sentences together for a reader.-The team drove home from California. -It rained on the way home. -The team arrived safely. The following transactions occurred at several different businesses and are not related. Post the following transactions into the appropriate T-accountsa. Serena Hamilton, an owner, made an additional investment of $42,000 in cash.b. A firm purchased equipment for $20,000 in cash. c. A firm sold some surplus office furniture for $3,400 in cash. d. A firm purchased a computer for $3,700, to be paid in 60 days. e. A firm purchased office equipment for $22,400 on credit. f. The amount is due in 60 days. James Taylor, owner of Taylor Travel Agency, withdrew $12,000 of his original cash investment. g. A firm bought a delivery truck for $38,500 on credit; payment is due in 90 days. h. A firm issued a check for $7,200 to a supplier in partial payment of an open account balance Whats the supplementary angle of 109 degrees. En aquest moment, la diferncia de preu entre dos cotxes s de 987. Quina ser la nova diferncia si el model ms car disminueix 50 en el preu i el ms econmic augmenta en 200? PLS HELPTwo students are comparing scientific experiments to investigations. They came up with the following ideas.Student A: Testing plant growth in different types of soilsStudent B: Comparing the water level in a lake during different times of the yearWhich student gave an example of a scientific experiment? Student A because it requires experimental and control groups Student B because it requires a hypothesis Student A because it is preferably done in natural settings Student B because it is preferably done across a long period of time Dose mitochondria transfer things to the cell What is 7,300,000 written in scientific notation? perry bought 5 nectarines for $4. how many nectarines can amanda buy if she has 16$ a boy takes 20 minutes to cover 3.2 km on a bicycle find the speed in km/hr What are Sodapop's strengths in The Outsiders. help!!!Read the following paragraph from "From Behind the Veil."When she reached her room Siham could barely stop herself from laughing out loud. She picked up her veil and danced with glee, then stopped in the middle of the room and began to whisper to the veil: "You black shroud, you know how I despise you and make use of you to keep him apart from me! I don't care about you and I feel nothing for you. I defy you. But I love you too. These poor girls take refuge behind you in order to preserve their virginity, and their honour, and good morals. If they were more truthful they would say that they love you because you hide faults and scandals. I love you because you help me to enjoy my life in a way that only those who wear the veil can appreciate. I pity those wretched unveiled women. I scorn them."Which of the following statements best expresses the writer's perspective of veiled women? A. Veiled women look down on those who do not wear veils. B. Women who wear veils are often unhappy and secretly defiant. C. Girls who wear veils can learn to appreciate life's experiences in ways that others cannot. D. Girls who wear veils strive to uphold the tradition and ethical values dictated by their culture. Using the nature vocabulary you learned, describe a nature scene in 5 complete sentences and in French. What kinds of things do you hear and see? Solve each system by elimination.3) -4x+6y=-144x 8y = 16A) (2, -1)B) (-1,2)C) (4,1) D) (2, 1)