Which describes gas exchange in the respiratory system?
A. Gas exchange happens through diffusion.
B. Gas exchange removes oxygen from the body.
C. Gas exchange occurs between the body’s cells and bronchi.
D. Gas exchange protects the body against foreign invaders.

Answers

Answer 1

Answer:

A.

Explanation:

A. Gas exchange happens through diffusion.

Answer 2

Answer:

A

Explanation:


Related Questions

Which organelle is found in plant cells only? A.7 B.1 C.3 D.6

Answers

It’s a 7 there’s a cell membrane, cytoplasm, nucleus, vacuole, chloroplasts, Mitochondria, and a cell wall. Good luck !


1. This is a glucose molecule, the sugar made in photosynthesis. Saccharides, or sugars, are
the building blocks for carbohydrates. What is another term for “building block?"

Answers

another term would be a monomer which link together to form polymers

What does the image above depict?
a. images and fragments from the artist's dreams
b. a ymbolic representation of a German officer
C. symbolic memories of the artist's life
d. the horrors of war

Answers

Answer:

B.  symbolic representation of a German officer

Explanation:

"Portrait of a German Officer is an early 20th century portrait by American modernist painter Marsden Hartley. Done in oil on canvas, the portrait depicts the abstract figure of an Imperial German officer as being composed entirely of military decorations and badges of rank."

The image above depicts  a symbolic representation of a German officer.

Portrait of German officer

The picture in the given image depicts a portrait of a German officer an early 20th century.

The portrait was designed by an American modernist painter Marsden Hartley. Done in oil on canvas, the portrait depicts the abstract figure of an Imperial German officer as being composed entirely of military decorations and badges of rank.

Thus, the image above depicts  a symbolic representation of a German officer.

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A dry beaker has a mass of 55.0 g. When 50.0 mL of water is added to the beaker, the mass of the water and the beaker is 105.0 g. What is the density of the water?

Answers

The answer is 2.1 g/ml

D = M/V

105.5/50.0 = 2.1

Sodium has the atomic number 11. How many electrons are in a sodium ion, which has the symbol Nat?
A.
10
B.
11
C.
12

Answers

Answer:

11

Explanation:

Hope this will help you

what happens to all the weight of the food we eat

Answers

Answer:

All the weight of food we eat can happen in many ways. It can be digested and turned into waste. It can also be turned into body fat. The weight of the food we eat can help give us nutrition and vitamin s.

Explanation:

The weight of food can slightly go away due to food going in to the digestion system and turns into waste.

Apologies if this isn't the best answer.

help please don't know the answer​

Answers

Answer:AAll life on Earth stores its genetic material inside the nuclei of its cells.

All life on Earth has DNA. All life on Earth has the same set of mutations in its genes

Obviously A
Hop it helped:)

HELPPPPP ILL MARK YOU BRAINLY

Answers

Answer:

Photosynthesis transforms light energy into chemical energy by making sugars. Cellular respiration releases the chemical energy from food by breaking down sugars.

DNA and RNA differ in the following way(s):
1. DNA has a phosphate and RNA does not
2. DNA and RNA have different 5 carbon sugars
3. DNA and RNA have the same nucleotides
4. Both A and C

Answers

Answer:

2

Explanation:

RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose

energy transfer through molecule to molecule contact is called?

Answers

Answer:

It's called conduction

Explanation:

The condition of ketoacidosis is Select one: a. a potentially fatal buildup of acetoacetate or 3-hydroxybutyrate lowering blood pH. b. due to a lowered production of ketone bodies than is normal. c. the increase in pH of the cells due to ketone body production. d. only found when anaerobic catabolism of fat occurs.

Answers

Answer:

The correct answer is option A ( a potentially fatal buildup of acetoacetate or 3-hydroxybutyrate lowering blood pH.)

Explanation:

Ketoacidosis results in a type of body metabolic state where the urine concentrations are high in ketone bodies, such as acetoacetic acid , 3-hydroxybutyrate. Fatty acids are converted to ketone bodies, resulting in a very high level of ketone bodies which automatically lowers the blood pH.

Ketoacidosis is of different types, Diabetic ketoacidosis, alcoholic ketoacidosis, starvation ketoacidosis. They are all associated with the accumulation of ketone bodies within the bloodstream. The underlying disease  common with ketoacidosis is Diabetes.

Senescence __________. Question 5 options: a) begins at the moment of conception and accelerates after age 40 b) occurs across all parts of the body at the same time and speed c) begins once body structures reach maximum capacity and efficiency d) occurs because the physical body wears out from use

Answers

Answer: c. Senescence begins once body structures reach maximum capacity and efficiency

Explanation: Senescence is simply ‘growing old’. Aging sets in at the time when physical development is complete - when a person reaches their ‘prime’. After that a person is ‘past their prime’ which is the subjective recognition of the on set of gradual deterioration. The biological rationale is that the purpose of life is to survive to reproductive age and to reproduce, and in some species to assist progeny to survive to reproductive age. Beyond that, survival has limited value.

An analogy is the length of an elephant’s trunk. It is as long as it needs to be, determined by natural selection, but no longer than it needs to be for optimum efficiency, again determined by natural selection.

Study the diagram of a cell.
Which structures are found in both plant and animal
cells?
Wand X
W and Z
X and Y
Y and Z

Answers

Answer:

W and Z

Explanation:

Answer:BBBBBB

Explanation:

Because I got it right on the asihnement

what are the 7 factors of classification of living things

Answers

1 Nutrition

Living things take in materials from their surroundings that they

use for growth or to provide energy. Nutrition is the process by

which organisms obtain energy and raw materials from nutrients

such as proteins, carbohydrates and fats.

2 Respiration

Respiration is the release of energy from food substances in all

living cells. Living things break down food within their cells to

release energy for carrying out the following processes.

3 Movement

All living things move. It is very obvious that a leopard moves but

what about the thorn tree it sits in? Plants too move in various

different ways. The movement may be so slow that it is very

difficult to see.

4 Excretion

All living things excrete. As a result of the many chemical

reactions occurring in cells, they have to get rid of waste products

which might poison the cells. Excretion is defined as the removal of

toxic materials, the waste products of metabolism and substances

in excess from the body of an organism.

5 Growth

Growth is seen in all living things. It involves using food to

produce new cells. The permanent increase in cell number and size

is called growth.

6 Reproduction

All living organisms have the ability to produce offspring.

7 Sensitivity

All living things are able to sense and respond to stimuli around

them such as light, temperature, water, gravity and chemical

substances.

Answer:1 Nutrition.

2 Respiration. ...

3 Movement. ...

4 Excretion. ...

5 Growth.

6 Reproduction. ...

7 Sensitivity.

Explanation: Im 98% sure this is correct.

Match the type of metamorphism to its cause.

Answers

Answer:

Contact - Heat

Dynamic - Directed Pressure

Impact - Meteorite

Regional - Surrounding

How can vaccines be used to prevent viral infection?
A.)To prevent a immune response in the host
B.)To destroy any virus that enters the host
C.)To create a blocking protein on the cell
D.)To prevent the replication of the virus

Answers

Answer:

D

Explanation:

I know

Answer:

I believe that your answer is C.

Explanation:

C is your answer because it shows your body how to fight and block the virus.

vaccines usually send antigerms in your cells and create immunity/block the virus from entering your cells.

i hope this helps! let me know if im wrong :)

Which describes an old technology and a current technology that can fulfill people’s needs?

emerging technologies

overlapping technologies

obsolete technologies

coexisting technologies

Answers

Answer:

coexisting

Explanation:

Answer:

Coexisting

Explanation:

Type your answer in the box.
The video reports a decline in the number of "packers" in California. What are packers, and what challenges does
their decline pose to firefighters who fight wildfires?

Answers

Answer:

packers are people who pack mules with firefighting supplies and deliver those supplies to the firemen fighting fires in california. The decline of packers in california means that there is a smaller chance that the firemen wont have gear and supplies to fight the fire. The fires will win and burn down people's homes and cost some people thier lives.

Explanation:

Don't worry; this isn't the direct answer. I wrote this by myself.

Salivary amylase is an enzyme in humans that breaks down starches. What substances would humans have difficulty digesting without this enzyme
Group of answer choices

Answers

Answer:

Carbohydrates

Explanation:

High in fats and very fatty

In the absence of salivary amylase, humans would have difficulty digesting carbohydrates.

What is salivary amylase?

Salivary amylase is produced by the salivary glands located towards the back of our mouth. Salivary amylase is a very small percentage of the total amount of amylase produced by the body.

Most of the amylase in the body is secreted by the pancreas. Salivary amylase is secreted in the saliva. This begins the process of the breakdown of food in the mouth itself.

Salivary amylase breaks down carbohydrates into maltose units which is a disaccharide. The maltose is ultimately broken down into glucose.

Carbohydrates are a very significant portion of the diet of a large percentage of the global population. Various kinds of bread and rice have a large portion of them composed of carbohydrates.

Therefore, in an absence of salivary amylase, humans would have difficulty digesting carbohydrates.

Read more about carbohydrates, here

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Blank 1) Proteins
Cytoplasm
Chromosomes

Blank 2) Alleles
Proteins
Chromosomes

Blank 3) Mutations
Adaptations
Chromosomes

Blank 4) Neutral
Harmful
Beneficial
Beneficial, neutral, or harmful

Answers

Answer:

Blank 1) chromosomes

Blank 2) proteins

Blank 3) mutations

Blank 4) harmful

Grizzly bears have a diploid number of 74 chromosomes in their body cells. How many chromosomes were in each of the male's sperm cells?.

Answers

Answer:

74 ÷ 2 = 37

since it's only one gamete cell then it's twice less the number

At night, a land breeze forms because

A) water releases less solar energy during the day; warm ocean air moves into land.
B) land cools more quickly than water; cool land air moves to replace rising warm air over the water
C) land absorbs less solar energy during the day; cool land air moves to replace rising warm air over the water
D) water absorbs more solar energy during the day; cool land air moves to replace rising warm air over the water

Answers

Answer:

B) land cools more quickly than water; cool land air moves to replace rising warm air over the water

Explanation:

During the day, the land surface heats up faster than the water surface. Therefore, the air above the land is warmer than the air above the ocean. ... The bottom of the following image illustrates the land breeze that occurs at night. Recall that the land surface cools quicker than the water surface at night.

What's healthier for you bottled water are top water

Answers

Answer:

bottled

Explanation:

Most animals living in the_______migrate or hibernate during the winter.

options:

Tropical Rainforest

Desert

Tudra

Answers

Answer:

Tundra

Explanation:

to survive the long cold winters and to breed and raise young quickly during the winter they migrate

The answer is Tundra.

Messenger RNA (mRNA) travels from the nucleus of a eukaryotic cell to the ribosome. At the ribosome, the amino acids are lined up in order as the tRNA molecules line up with complementary bases on the mRNA. This process is called _____ and results in the formation of _____.

Answers

Answer:

The correct answer is - translation, polypeptide/amino acid chain.

Explanation:

The translation is the process that involves the movement of mRNA from the nucleus to the ribosome and where amino acids are formed in sequence linked with one another in the same order as the transfer RNA line up with the complementary bases encoded on the messenger RNA or mRNA.

This amino acid chain or the polypeptide folds in a specific way to active protein for the specific function or expression. This process is the last stage or phase of protein synthesis.

Put the following in order from most thermal energy to least thermal energy. ​

Answers

from hottest to coldest:

- the turkey

- the tea

- the beach

- the, what is it, an iceberg or ocean?

- the ice cube

refer to the other question I answered by you. 0 degrees Celsius would be frozen, 100 would be boiling hot. Since -2 is the lowest, that would be the coldest/ least amount of thermal energy. 60 degrees Celsius is the highest, so it has the most thermal energy. Again, thermal energy is just heat energy, so you just need to figure out which is hottest.

Science 6th grade digital INB- You dont know what parts of the ground are safe and what parts are thin crusts of soil covering fires or sinkholes. Design a system that can access the area and take measurements that show changes in the fire. (No right or wrong answer just need someone to come up with something and quick.)

Answers

Answer:

Fire detecting Scanner.

Explanation:

Fire detecting Scanner is a system which has the ability to scan the area and tells the changes occurs in the fire inside the earth crust. This scanner collect all information about the area on the basis of which we can take steps to avoid the damage caused by the fire. With the help of this scanner we can tell that which part is safe and which part of the area is dangerous for people.

Give two ways in which saliva aids digestion. ​

Answers

Explanation:

Saliva contains special enzymes that help digest the starches in your food. An enzyme called amylase breaks down starches (complex carbohydrates) into sugars, which your body can more easily absorb. Saliva also contains an enzyme called lingual lipase, which breaks down fats.

Hi- Uhm, Help, please?

Answers

Answer:

At the end of meiosis there are two daughter cells, at the end of meiosis telopashe there is four different cells

Explanation:

A nucleotide consists of

Answers

A nucleotide is made up of a sugar molecule connected to a phosphate group and a nitrogen-containing base. These bases in nucleotides are adenine, cytosine, guanine, and thymine (Note: Thymine is not present in RNA so it is replaced with Uracil.)

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