Answer:
The nostrils, nasal cavity, pharynx, larynx, trachea, bronchi and bronchioles.
Explanation:
The air enters to the mouth and passes through nostrils, nasal cavity, pharynx, larynx, trachea, bronchi and bronchioles and finally reaches alveoli where the exchange of gases such as carbondioxide and oxygen. The hemoglobin takes carbondioxide gas from the cells that are present all over body to the lungs. Their this carbondioxide gas is removed from the hemoglobin and absorb oxygen. This carbondioxide gas is releases from the body on the same pathway but reverse in direction.
In eukaryotic cells, where does transcription occur?
A. Nucleus
B. Extracellular matrix
C. Cytoplasm
Explain the difference: a myelinated axon conducts impulses faster than non-myelinated axon of the same diameter
Answer:
A myelinated axon conducts impulses faster than a non-myelinated axon. ... Therefore, in myelinated neurones, the nerve impulse is said to jump from node - to - node, a impulse pathway known as Saltatory Conduction. This means that the action potential does not have to travel along the whole length of the myelinated axon
Explanation:
In the early days of life on Earth, plants were exposed to extremely high doses of ultraviolet radiation, Constant UV exposure
resulted in some land plants developing narrow leaves with thick, waxy cuticles. Over many, many generations, these narrow
leaves evolved into needles.
Relate the development of plant needles to the occurrence of mutations,
A)
Plant needles adaptations for survival that some plants developed due to
high temperatures on Earth
B)
Plant needles are the result of leaf cell mutations that made some leaves
thick and waxy, while other leaves did not change,
Plant needles are the result of neutral mutations to leaf tissue that would
neither help nor harm the plants living in such a harsh environment.
D)
Plant needles were a beneficial mutation that increased survival of certain
plants that reproduced and passed the mutated gene to offspring,
Answer:
B I think.
Explanation:
how old is president Cyril Ramaphosa??
As native mason bees visit flowers, they spread pollen while also consuming nectar from the plant. This is an example of symbiosis.
true or fasle
Answer:
True
Explanation:
Symbiosis is a type of relationship or interaction between two different biological organisms/species by which both are benefited. The bees such as mason bees are pollinators. Pollinators are animals (especially insects) that help the development of seeds and the fruit surrounding seeds by the pollination of flowers, i.e., by the transference of pollen from male anthers of a flower to the female stigma. During this process, pollinators eat nectar, which is a sweet energy-rich liquid secreted by flowers. In consequence, both species (i.e., plants and mason bees) are benefited from this interaction.
Which of the following can cause mutations?
A. All of the above
B. Radiation
C. Chemicals
D. Errors during DNA Replication
[tex]\huge\colorbox{purple}A\colorbox{blue}n\colorbox{purple}s\colorbox{blue}w\colorbox{purple}e\colorbox{blue}r [/tex]
just correct me if I'm wrong ✨
Don't bash me please :(
__________________________________
D. Errors During DNA Replication ✨
[tex]\color{Violet}\rm{☘︎Hopeithelps!}[/tex]
Mutations arise spontaneously at low frequency owing to the chemical instability of purine and pyrimidine bases and to errors during DNA replication. Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations.[tex]\color{gold}{✨•MissyyZackiee•✨} [/tex]__________________________________
“I ask that you’ll have the power to grasp love’s width and length, height and depth, together with all believers. I ask that you’ll know the love of Christ that is beyond knowledge so that you will be filled entirely with the fullness of God.” — Ephesians 3:18-19 ❤__________________________________
Our understanding of taxonomy has changed and will continue to change as we further understand living things at the genetic level.
A. True
B. False
Answer:
a
Explanation:
.............................que es la salud?
List three sources of freshwater.
Rain, River, ocean
Answer:
Sources of freshwater: rivers, lakes, reservoirs, and creeks and streams.
Explain how the investigation could indicate that chlorophyll is needed for photosynthesis. Include the role of chlorophyll in your explanation.
help me ..................
Answer:
1,1,6
Explanation:
saw ur other post w the actual Q; ans 1, 1 and 6.
Answer:
Explanation:
The first two pictures show an ovum and a sperm so it is 1 for both boxes. The third picture shows embedding into the uterus wall and that is 6.
I was wondering what is this until you posted the questions in another post.
Our atmosphere acts like a blanket trapping heat and keeping Earth at a habitable temperature, it’s this retaining of heat that is referred to as the Greenhouse Effect. The greenhouse effect is caused by greenhouse gases that trap heat from the sun, the more greenhouse gases there are the more heat is retained
HOW IT WORKS
The heat from the sun (solar radiation) has a very short wavelength and this can pass easily through the layer of greenhouse gases. This wavelength is called Ultraviolet radiation. As the UV rays strike the Earth, the Earth redirects the rays back into the atmosphere. We feel this as heat. The heat from the earth (terrestrial radiation) has a longer wavelength (infrared) some of this becomes trapped by the layer of greenhouse gases.
GREENHOUSE GASES
Water vapor (H20) is the most prevalent greenhouse gas and occurs naturally. Some greenhouse gases are both natural and man-made including carbon dioxide (CO2) & methane (CH4).
Describe the size of insolation when it strikes the Earth.
What would happen if there were no greenhouse gases to trap heat?
Answer:
y
Explanation:
y
During action potential which of these statement is true?
a) Na+ goes outside the cell membrane
b) there is repolarization of cell membrane
c) there is depolarization of cell membrane
d) non of above
¿A que evidencia de la evolución hacen referencia los arboles evolutivos?
A.Embriologia
B.Registro fosil
C.Distribucion geografica
D.Grupos taxonomicos
E.Anatomia comparada
Answer:
B. Registro fósil
Explicación:
El registro fósil es la evidencia de la evolución a la que se refieren los árboles evolutivos. La relación entre organismos se puede averiguar estudiando fósiles de organismos. Los árboles evolutivos también se denominan árbol filogenético y muestran las relaciones evolutivas entre varias especies basadas en similitudes y diferencias en sus características físicas o genéticas. Se consideran similares aquellos organismos que tienen las mismas características físicas o genéticas.
Modern classification systems are based on structural similarities, fossil record and
- modern classification is based on figuring out evolutionary relationships using evidence from living species, the fossil record, and molecular data. - the evolutionary history for a group of species. ... - each species in a clade has some traits that have changed from its ancestors over evolutionary time.
Hope This Helps! can i get brainliest lol
All life shares the same evolutionary heritage from an ancestor that appeared 3.8 billion years ago.
A. True
B. False
Answer:
A. True
Explanation:
The last universal common ancestor or last universal cellular ancestor (LUCA), also called the last universal ancestor (LUA), is the most recent population of organisms from which all organisms now living on Earth have a common descent—the most recent common ancestor of all current life on Earth.
Answer:
A. True
Explanation:
Yes, all life shares the same evolutionary heritage from an ancestor that appeared 3.8 billion years ago.
dos semejanzas y tres diferencias, entre los postulados griegos, y los postulados de Van Helmont y Needham de las teorías abiogenistas
The digestive system and the excretory system both excrete waste.
Answer:
The answer is
The digestive system excretes a solid waste and the excretory system excretes a liquid waste.
hope it will help you
Answer:
The digestive system excretes a solid waste and the excretory system excretes a liquid waste.
Explanation:
I Know I am in the future
What type of information is recorded in a trace fossil?
A: Radioactive evidence
B: molecular evidence
C: evidence of a fossil’s actual age
D: evidence of an organism’s activities
Evidence of an organism's activities is the type of information that is recorded in a trace fossil.
HELP PLEASE DUE SOON
Explain how building the lake near Galetown could affect the amount of water vapor and the amount of rain.
Answer:
Adding a lake near any town will most likely increase rainfall because of the added water, and water vapor levels will also increase. Because of the excess water in the environment, more water will be found in the surrounding atmosphere (the same reason precipitation will increase in the area.)
Which cell organelles are made of microtubules, are always found
in pairs, and are important in forming the spindle apparatus and cleavage furrow during the division in animal
cells?
Answer:
some cell made from s****x. baby from
Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope. Centrioles play a role in organizing microtubules that serve as the cell's skeletal system. They help determine the locations of the nucleus and other organelles within the cell.
The Montreal Protocol of 1987 provided a global framework to phase out chlorofluorocarbon (CFC) production and use. A though the Montreal Protocol has led to a dramatic decrease in CFCs released into the atmosphere, stratospheric ozone destruction has decreased only slightly.
Answer:
True
Explanation:
What is true of a primary consumer?
A) Always omniverous
B) Sometimes a detrivore
C) Frequently autotrophic
D) Most likely herbivores
Meiosis results in ____ cells.
Answer:
haploid
Explanation:
what law out of newtons law is this statement ? please help
( The phone will hit the ground and the ground will push up with the same force. With a case, it is increasing the amount of time the phone hits the ground. This means the reaction force will be less.)
Answer:
Newton's Third Law
Explanation:
Newton's Third Law is: If object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.
In this case, Object A is the Phone, and Object B is the ground. When the phone(Object A) hits the ground(Object B), the ground pushes up on the phone making the time increase and makes the reaction force less. Hope this helps!
Which of the following materials do cone bearing plants produce for reproduction?
O spores and pollen
O flowers
O egg and sperm cells
O anther and stigma
Long
Answer:spores and pollen
Explanation:
En este dominio existen gran variedad de procariotas, con diversidad morfológica y fisiológicas, en este están todas
las procariotas patógenas, su tamaño oscila entre 1 y 40 milimicras, es
a) Protista
b) Eubacteria
c) Archaea
d) Eukaria
Answer:
c) Archaea
Explanation:
Los dominios biológicos son los taxones de más alto nivel, por encima de los reinos y abarcando todos los taxones, caracterizándolos de la manera más generalizada posible, dentro de la clasificación científica. Hay tres tipos de dominios llamados Archaea, Bacteria y Eukarya. Entre ellos, el dominio conocido como Archaea es el que engloba a los organismos procarióticos, unicelulares y patógenos, es decir, capaces de provocar enfermedades en el ser humano.
1. Stern cells are different from other cells, as they are not specialized and can reproduce other unspecialized cells. There has been great controversy over the use of stem cells in the United States, especially when they are taken from fetal tissue. What are some possible benefits to humans of using stem cells?
plz hellllp
Answer:
Stem cell benefits:
Can repair limbs such as Arms cut off etc.
Can Repair cells and keep people from ageing
Can reduce the effect on diseases
Test new drugs for safety and how effective they are
Make people live longer and healthier lives
Explanation:
Humans aren't aware on how to harvest stem cells effectively in a way they work on humans tot heir full potential but the reasons I listed above are only the tip of the iceberg when it comes to what we can do with these.
Which layer of the atmosphere protects all life on land by absorbing high energy radiation?
Answer:
The troposphere layer.
What are the base units the SI units are based on
Answer:
he units in the revised SI are based completely on seven unchanging quantities or “universal constants,” including the speed of light, the amount of electric charge in an electron, and the Planck constant.
hope it helps