what is a common form of a single celled organism
Answer:
Bacterium
Explanation:
There are many different types of bacteria on the planet, and they are all unicellular prokaryotes. They are on my hands, on your hands, in the air, probably on my dusty-crusty laptop, too. A lot. Now that I think about it, I should probably clean off my keyboard
Briefly explain how the volume in your thoracic cavity changes during inhalation and exhalation. Be sure your answer includes how those changes in volume lead to air moving in and out. Include which gas, oxygen or darbon dioxide regulates respiration rate.
Answer:
Both inhalation and exhalation depend on pressure gradients between the lungs and atmosphere, as well as the muscles in the thoracic cavity.
Explanation:
The thoracic cavity, or chest cavity, always has a slight, negative pressure which aids in keeping the airways of the lungs open. During the process of inhalation, the lung volume expands as a result of the contraction of the diaphragm and intercostal muscles (the muscles that are connected to the rib cage), thus expanding the thoracic cavity. Due to this increase in volume, the pressure is decreased, based on the principles of Boyle’s Law. This decrease of pressure in the thoracic cavity relative to the environment makes the cavity pressure less than the atmospheric pressure. This pressure gradient between the atmosphere and the thoracic cavity allows air to rush into the lungs; inhalation occurs. The resulting increase in volume is largely attributed to an increase in alveolar space because the bronchioles and bronchi are stiff structures that do not change in size.During this process, the chest wall expands out and away from the lungs. The lungs are elastic; therefore, when air fills the lungs, the elastic recoil within the tissues of the lung exerts pressure back toward the interior of the lungs. These outward and inward forces compete to inflate and deflate the lung with every breath. Upon exhalation, the lungs recoil to force the air out of the lungs. The intercostal muscles relax, returning the chest wall to its original position. During exhalation, the diaphragm also relaxes, moving higher into the thoracic cavity. This increases the pressure within the thoracic cavity relative to the environment. Air rushes out of the lungs due to the pressure gradient between the thoracic cavity and the atmosphere. This movement of air out of the lungs is classified as a passive event since there are no muscles contracting to expel the air.
Which is one of
the six fundamental elements that are found in living organisms?
Answer:
The elements are carbon , hydrogen , nitrogen ,oxygen , sulphur and phosphorus
...............
Answer: C
Explanation:
Explain how fibrin protects the body
What's the difference between a hypothesis and a theory?
can someone plz help me
Answer:
3
Explanation:
bc that is the cell wall, which only plants have
What is DNA barcoding?
Answer:
A DNA barcode is a short, standard gene segment of an organism that has been identified in a gene bank, used to identify unknown species by comparison with the DNA sequence of the gene bank. .
interpret data
identify the problem
observe and record
arrive at a conclusion
make a hypothesis
test the hypothesis
A group of students discusses what they
believe will be the outcome of an experiment
they are about to conduct. Each student
records a statement that will either be
proven or disproven by the experiment.
Each member of the group carefully watches
as the experiment proceeds. One group
member writes down the comments of the
group as they call out what they see.
After the experiment is complete, the group
discusses their observations. They review their
notes and create a graph that shows the
results of the experiment. The group
discusses what these findings might mean.
Now that the group has decided on a
hypothesis, they are ready to proceed with
the experiment. As they work, the group is
cautious to test only one variable at a time
and to follow all directions carefully.
E
The group reviews their notes and the data
they have collected. After a short discussion,
they decide whether or not the original
hypothesis is correct.
A science group begins a discussion related to
what they have been studying in class. They
take turns posing questions they still have
about the topic. Together, they decide on an
experiment they would like to conduct. They
hope the experiment will answer some of the
questions they still have.
Scientific Process
The group reviews their notes and the data they have collected.
A
Please help me for this question...
Why does the pectoral girdle need to be flexible while the pelvic girdle needs to be rigid?
Answer:
Flexibility: pectoral girdle is more flexible-less ligaments, ball and socket joint is shallower
Security: pelvic girdle is more secure, deeper socket. there are more dislocated shoulders than dislocated hips
ability to bear weight: pelvic girdle can bear more weight-the pelvic girdle has bones that are fused (os coxa) and a joint with the sacrum. the pectoral girdle has a little bone called the clavicle connecting it to the body wall.
Explanation:
The pelvic gridle is rigid to protect internal organs and support body weight whereas pectoral gridle require to provide movement to upper limbs.
The girdles are part of the appendicular skeleton which is attached to upper limbs and lower limbs, The upper limbs attach to pectoral gridles and lower limbs attached to pelvic gridles.
1. The pectoral gridle:
connects your upper limbs to the bones along the axis of your body.The pectoral girdle has two bones clavicle, or collarbone and scapula, or shoulder blade.it has ball and socket joint that provide movement to the upper limb.2. The pelvic gridle:
made up of left and right coxal bones and sacrumattached to legs or lower limbs therefore, called hipbonessupports body weight and protect internal organsit is rigid needed to support the weight of the body.Thus, the correct answer is - The pelvic gridle is rigid to protect internal organs and support body weight whereas pectoral gridle require to provide movement to upper limbs.
Learn more about pectoral gridles:
https://brainly.com/question/20926776
How does seed become dormant?
Answer:
Seeds may be dormant because the seed coat prevents germination, or because the embryo - by itself or together with chemicals - inhibits germination. Seed coats render seeds dormant if: their hardness prevents the embryo from expanding. impermeability to water stops development.
Describe the general temperature of ocean currents near the equator and the poles.
Answer:
Currents flowing away from the Equator are generally warm.
Explanation:
That is because the Equatorial regions is the source of warm air and water. Ocean currents flowing from the Equator thus carry this warm water with them. The most prominent example is the Gulf Stream in the Atlantic Ocean, which runs most of the way to the North Pole and brings mild winter climates in its wake to adjacent coastal areas. In the Pacific Ocean the Alaska Current likewise carries warm water northward making Anchorage, Alaska much milder in winter than inland areas with the same latitude.
a group of cells that works together may form
Answer: Tissue
A group of cells that work together form a tissue. Your body has four main types of tissues, as do the bodies of other animals. These tissues make up all structures and contents of your body
Explanation:
Not MY WORK!!!!! I HOPE THIS HELPS
Answer:
answer is they may form a tissue.
I will give brainliest
Why do villi secrete mucus for protection?
The intestinal mucus is an efficient system for protecting the epithelium from bacteria by promoting their clearance and separating them from the epithelial cells, thereby inhabiting inflammation and infection
hope it helps!
Answer:
it protects epithelium from harmful bacteria.thereby inhibiting inflammation and infection.
Definition of endoplasmic reticulum
Answer:
endoplasmic reticulum is a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane.
Exercise decreases the risk of catching a cold.
What is the Independent variable and dependent variable ?*
O Exercise
O Catching a cold
Time of day you exercise
Scientific information that is hundreds of years old is fact and does not change.
True or False
Why?
Hey, I am from India
How many of you love India?
Answer:
um me i guess
Explanation:
Answer:
hello bro I am in india from maharashtra and you ?
5. A proposed set of statements or principles used to explain a group of facts or natural phenomena is a
law
question
set of data
conclusion
theory
Answer:
theory
Explanation:
A proposed set of statements or principles used to explain a group of facts or natural phenomena is a theory.
3. Draw the letter ""e"" that you see under low power only. Answer:
Answer:
I am doing this from a laptop that is why its is all wonky but I tried my best.
Explanation:
Which is an example of molecules
that can fit through the small
spaces of the cell membrane?
A. glucose
B. oxygen
C. amino acids
D. fats
Explanation:
Oxygen is the answer. (option B)
una celula tiene mucho color verdoso, posee una forma poliédrica y presenta una pared rígida, ¿Que tipo de celula es?
Explanation:
PLEASE express yourself in English
What does it mean if a science paper is peer-reviewed
and why is this significant?
What about cellulose makes it ideal for structural support?
Explanation:
Cellulose is ideal as a structural material which give its fibers give strength and toughness to a plant's leaves, roots, and stems.
if my answer helps you than mark me as brainliest
what is a long collection of genes that carries heredity information and is formed from condensed chromatin
The diagram shows a simplified version of how the blood moves around the body of an animal. Is the blood at point D oxygenated or deoxygenated?
Answer:
oxygenated
hope u got your answer
In the given diagram, point D is oxygenated blood, as it carries oxygen from heart to cells.
What is heart?The main organ of your cardiovascular system, a network of blood vessels that pumps blood throughout your body, is your heart.
It also collaborates with other bodily systems to regulate your heart rate and blood pressure. Your family history, personal health history, and lifestyle all have an impact on how well your heart functions.
The heart is located between the two lungs, slightly to the left of center, behind the breastbone in humans. It is supported by the diaphragm, the muscular wall that separates the chest from the abdominal cavity.
It's the muscle at the heart of your circulatory system that pumps blood throughout your body as your heart beats. This blood transports oxygen and nutrients to all parts of your body while removing waste and carbon dioxide.
Here, the red vessels are arteries while blue vessel is vein, arteries always carries oxygenated blood and vein carries deoxygenated blood.
Thus, the point D carries oxygenated blood.
For more details regarding heart, visit:
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Which best supports the part of the cell theory which states “the cell is the smallest unit of living things”?
Answer:
because it is the basic unit of life
please help
1. Which of the following best describes the relationship between cells and living things in
general?
A. The larger the living thing, the larger its cells
B. The larger the living thing, the greater number of cells it contains
C. The number of cells in all living things is the same
D. There is one kind of cell, which all living things are made of
Which descriptions apply to these two compounds?
Answer:
atoms and molecules
Explanation:
The Question is in the picture
your answer should be a. I had this question not that long ago and I got it right
Answer:
evolution is the change in the inherited traits of a population from generation to generation
so A should be the answer
Explanation: