Explanation:
As the ratio gets smaller, it takes longer for items to diffuse.
Explanation:
When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared.
When there is more volume and less surface area, diffusion takes longer and is less effective. This is because there is a greater area that needs to receive the substance being diffused, but less area for that substance to actually enter the cell.
this is actually why cells divide. When they become too large and it takes too long for them to transport materials across the cell, they lose efficiency and divide in half to raise the surface area to volume ratio.
which pathogen by being the smallest is able to spread and infect the greatest number of hosts
Answer:
bacteria is the pathogen
Answer:
Virus
Explanation:
A virus is the smallest pathogen and can spread easily.
When the environment acts for or against one extreme characteristic, this is an
example of which category of natural selection?
Answer:
Directional selection
Explanation:
occurs when natural selection favors one extreme of continuous variation. Over time, the favored extreme will become more common and the other extreme will be less common or lost.
The kingdom that does contain autotrophs is
A. Archae
B. Eubacteria
C. Plantae
D. Fungi
Answer:
The answer is C. the Plantae Kingdom.
Explanation:
They are multicellular, autotrophic organisms.
Answer:
D
Explanation:
The kingdom that does contain autotrophs is Fungi.
The chemical colchicine is used in the production of karyotypes. Colchicine prevents spindle fibers from forming during the cell cycle. What is a result of preventing spindle fibers from forming? Answer
A The cell cycle skips G1 phase
B Mitotic division is skipped, and the cell cycle proceeds to cytokinesis.
C Mitotic division stops in metaphase and cannot proceed to anaphase.
D The cell cycle skips S phase and proceeds to G2 phase.
Answer: the correct answer is C
Explanation:
Preventing the formation of spindle fibers makes the mitotic division stop in metaphase, and thus fail to proceed to anaphase.
• Colchicine prevents the polymerization of the microtubule, and thus, prevents the arrangement of the mitotic spindle, which shows the prevalence of another checkpoint in the cell cycle.
• As a result, the activity of the maturation promoting factor remains high, the chromosomes stay condensed, and the nuclear envelope fails to redevelop.
• A toxic effect is exerted on the living cells by the colchicine, which usually results in the arrest of the process of mitosis at an eventual stage, generally the metaphase, with the generation of unusual and bizarre nuclear configurations, and thus, resulting in the death of the cell.
Thus, the correct answer is option C.
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compare and contrast evaporation and boiling
40 Points!!! Answer ASAP!!
1. Why is the energy industry looking for new ways to access oil and natural gas? Write at least two sentences to explain this trend.
2. Name three of the newer methods for accessing oil and natural gas. After each, write a sentence explaining how the method works. Finally, list at least one upside and one downside of each method.
Answer:
you didn't give 40 points
Answer:
yes
Explanation:
difference between plants and animal cell
Answer:
Plant cells have a cell wall, but animals cells do not. Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not.
Explanation:
Hope this helps
sorry if incorrect
Brainliest?
Answer:
Plant cells have chloroplasts,animal cells don't.
Plant cells also have cell walls.
Animal cells have lysosomes and centrosomes and plant cells don't.
What can a person do to prevent barriers to exercise? Select three options.
Answer:
Explanation:
Three things that anyone can do to prevent this would be
understand myths about working out
look for inexpensive classes in the area
take a physical education course at school
Most barriers to exercise revolve around becoming discouraged/depressed about the results due to having unrealistic and high expectations. Learning about what you can expect realistically from a set routine will greatly increase motivation and prevent such barriers. The same applies to learning which routines and diets work best and all of this can be learned by taking physical education courses or classes near you.
Answer:
understand myths about working out
look for inexpensive classes in the area
take a physical education course at school
Explanation:
Just took health class. :))
Positive feedback is a control system that sends a signal to ________ a response.
Answer:
increase
Explanation:
hope this helps :)
What is the trophic level of the Aoudad (primary, secondary, tertiary consumer, scavenger, decomposer) .
PLEASE ANSWER ASAP!!!!
Answer:
Primary.
Explanation:
The Aoudad (Barbary sheep) Eat producers, (autotrophs) making them primary consumers
What is the name of the enzyme that “tells” the DNA to make RNA called?
Answer: RNA polymerase is the enzyme that transcribes DNA into RNA.
Explanation:
Explain what could happen if the relationship
ended.
Answer:
well
Explanation:
if the relationship ended, you'll both eventually lose feelings 2-3 months after y'all broke up.
If the image is too blurry click on it.
Throughout history, amoebic dysentery has resulted in the deaths of many soldiers. Deaths from this illness have often exceeded the number of deaths from wounds.
What likely led to the high rate of infection by the amoeba that causes this disease?
A. lack of available vaccines
B. lack of doctors to treat the sick soldiers
C. lack of vitamins and minerals in the diet
D. unclean food and water on the battlefield
Isometric training is ideal for immobilized rehab situations, they facilitate recovery and reduce muscle atrophy and strength loss
Answer:
An isometric training is a static contraction of a muscle.
Explanation:
An isometric training is a type of exercise which involves the static contraction of a muscle where no visible movement in the angle of the joint occur. Isometric exercises helps in maintaining and recovery of strength of our body. They can also build strength, but not very effectively like other exercises. During isometric training, the muscles doesn't change its length and the affected joint doesn't move from its place.
PLEASE HELP! IM DOING A TEST!!
What do Vaccines do?
Answer: vaccines help to protect us from a disease by giving our immune system a sample so that when the real disease comes, your body will be ready to fight it off.
Explanation:
Hope that helps!
Do we think we treat soil like dirt ?
Answer:
no we do not
Explanation: we treat them both differently
Answer:
No because people buy soil to plant things even tho there us dirt everywhere
pls mark brainliest
A new litter of pupples was born. The pupples in the litter do not all look the same, which can be seen
In the picture.
Rom
Which part of the cell contains the information that controls the traits of these dogs?
Helpppppp
WILL GIVE BRAINLY
Answer:
Explanation:
A
why is intensive system the most EXPENSIVE system
Answer:
The intensive farming looks at increasing the yield in the given limited land space with a high dependency on fertilizers, labor, and machinery. ... But as extensive farming is remotely located, the labor cost, the production cost is higher. Also, the output calls for much more care and takes a while to yield the crops.
Explanation:
Explain how a volcanic eruption cools the atmosphere.
Answer:
It cools the atmosphere by releasing gases such as sulfur dioxide into the atmosphere, which block out the sun as well. Sulfur dioxide isa gas that cools the atmospheric temperature.
Explanation:
I HAV BIG BRANE
Answer:
it takes more away from the core?
Which of these causes weather conditions on Earth to change frequently
Answer:
the difference in the absorption of heat between land and water.
9 Luis wants to interview someone who has a career in biotechnology. Which of
the following best describes a career in biotechnology?
F Athena uses a sophisticated telescope to observe stars.
G Zach tracks the number of fish that inhabit a certain coastal area.
H Vincent modifies the DNA of bacteria to study the function of their genes.
I Lindsey writes computer programs that model the three-dimensional
structure of chemical compounds.
In this passage, Jackson suggests that a country
made up of American Indians would be
an uncivilized wasteland.
open to white settlement
just as good as a country made up of whites.
Answer: A) An uncivilized wasteland.
Explanation: I did the assignment.
Answer:
an uncivilized wasteland.
Explanation:
edge 21
Where do marine creatures store carbon in their bodies? What form is it in?
Please help me in science!
What is the effect of an increased concentration of calcium ion in the sarcoplasm?
Answer:
When calcium concentration increases during depolarization, it shifts the conformation of troponin and tropomyosin, and actin is able to associate with myosin. As calcium is taken up again by the sarcoplasmic reticulum the muscle cell relaxes.
The effect that can be associated with increase in concentration of calcium ion in the sarcoplasm is :
Changing of shape and position of tropomyosin.
Can also cause muscles stiffness.
When the Ca2+ concentration become high in the sarcoplasm, there would be change in the position of tropomyosin as result of the binding effect of Ca2+ binds on troponin.Then the tropomyosin will be moved away from myosin binding sites on actin, then a cross bridge will be formedHowever, the effect if this on muscles is muscles stiffness.
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Describe and explain the changes between the first and second vaccine.
Answer:
from what we see from the graph when the children had the 1st vaccine antibodies in the blood raised. then the concentration of the antibodies depleted, after the children had the second dose of the measles vaccine again, the antibodies in the children's blood raised drastically then the first dose.
ILL MARK BRAINLIEST!!
1.What is a plate boundary?
2.What are three interactions can plates have? these are the three major types of plate boundaries.
3. In general what does the theory of plate tectonics explain?
Answer:
1. Plate boundaries are the edges where two of the Earth's plates meet
2. The three types of plate interacts include divergent boundaries, convergent boundaries, and transform boundaries.
3. This is the theory that the Earth's crust is separated into plates that move over the Earth's mantle. As stated, they can move in ways such as coming together, spreading apart, and interacting at boundaries all over the planet, which can cause things such as volcanos and earthquakes. Scientists created this theory as a way to explain why certain events like these are caused.
Answer:
THE EDGES WHERE TWO OF THE EARTH'S PLATES MEET.
DIVERGENT, CONVERGENT,TRANSFORM
EARTH'S CRUST IS SEPARATED INTO PLATES THATS MOVE OVER THE EARTH'S MANTLE
What is the name for the 3 letter code on tRNA?
Answer:
anticodon
anticodon – a sequence of three nucleotides on a tRNA molecule that bond to a complementary sequence on an mRNA molecule. The anticodon sequence determines the amino acid that the tRNA carries.
Explanation: