Answer:
kinetochore
Explanation:
The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the mitotic spindle.
Explain why physical appearance or morphology is not always useful for identifying organisms belonging to the same species
On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated, freshwater ponds that were once united. Currently, some predator-rich ponds have mosquitofish that can swim in short, fast bursts; other predator-poor ponds have mosquitofish that can swim continuously for a long time. When placed together in the same body of water, the two kinds of female mosquitofish exhibit exclusive breeding preferences. Which type of reproductive isolation operates to keep the mosquitofish isolated, even when fish from different ponds are reunited in the same body of water
Answer:
The correct answer is - Behavioral isolation.
Explanation:
In the question, it is given that the mosquitofish of different habitat shows different behavior as per the availability of predators in the particular habitat. For instance, some mosquitofish can swim continuously for a long time in fewer predators area whereas predator-rich ponds have mosquitofish that can swim in short, fast bursts.
It is evident that they diverged from common species that isolated in different regions, their behavior got changed according to the presence of predators. Thus, the isolation is here, behavioral isolation.
What does "diction" mean in these sentences?
Answer:
The act of pronouncing clearly.
Explanation:
I did it on iReady =)
Answer:
im pretty sure its the third one "the act of pronouncing clearly"
Explanation:
in the sentences its says " i work to say each word exactly right"
hope this helps
Please help <3 Will give brainliest
Answer:
A
Explanation:
how does greenhouse effect warm the earth?
Answer:
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The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth.
Please help me
Charlie took 6 minutes to run a mile. His sister, Christina, took 12 minutes to run a mile. Which of the following is true?
A. Christina ran faster than Charlie.
B. Charlie ran faster than Christina.
C. It cannot be determined who ran faster.
D. Charlie and Christina ran at the same speed.
Answer:
A. Charlie ran faster than Christina
Explanation:
Charlie: 6 mins per 1
Christina: 12 mins per 1
12 is longer than 6
An animal ate a plant and digested sugars stored in the plant's leaves. The sugars provided energy
to the animal's cells. Describe which organelles the sugar molecules must have passed through.
Answer:
Mitochondria
Explanation: Mitochondria are oblong shaped organelles found in the cytoplasm of all eukaryotic cells. In plant cells, they break down carbohydrate and sugar molecules to provide energy, particularly when light isn't available for the chloroplasts to produce energy.
Identify the major players shown in the simulation: mRNA, Codon, Amino Acid, tRNA, anticodon, ribosome.
Answer:
mRNA, tRNA and ribosome
Explanation:
mRNA, tRNA and ribosome are the major players because they perform a very important functions. Messenger RNA (mRNA) is a molecule in cells that carries instructions in the form of codes from the DNA to the sites of protein synthesis which is a ribosomes. Transfer RNA (tRNA) is a type of RNA molecule that helps in decoding a messenger RNA (mRNA) into a protein. Ribosome is an organelle present in the cell that is responsible for the production of proteins according to the instruction given by DNA.
describe what is happening to the population of bacteria
Answer:
Bacterial populations employ native defenses against antibiotics that are analogous to the activity of protonophores. These mechanisms disrupt membrane electrochemical gradients that enable bacterial populations to establish subpopulations of drug-tolerant persisters
Explanation:
When we cultured in bacteria by adding growth promoting factors for rapid growth, what happened in this time. At that time bacteria growth/size are increase or both .
PLEASE HELP. 10 POINTS!!!
Answer:
i believe the answer is c
3.What are the functions of vacuoles, lysosomes, and the
cytoskeleton?
Answer:
In plant cells, vacuoles maintain water balance. Lysosomes break down excess or worn-out cell parts. The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement.
Explanation:
Storage, waste disposal and structural support are the functions of vacuoles, lysosomes, and the cytoskeleton.
The following are the roles of vacuoles, lysosomes, and the cytoskeleton: Vacuoles are membrane-bound organelles that can be found in the cells of fungus, protists, and plants. They serve a variety of purposes, such as: Vacuoles have the capacity to store a wide range of materials, including waste materials, pigments, water, and nutrients. They control the osmotic equilibrium and aid in maintaining turgor in plant cells. Vacuoles in plant cells can be used as a storage space for a variety of waste materials and poisons that are damaging to the cell. They keep these molecules apart and stop them from harming other cell components. Support for structure: In plant cells, the huge central vacuoles press on the cell wall to support structure and preserve the form of the cell. Lysosomes are membrane-bound organelles that can be found in cells.
To know more about vacuoles, here:
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beak shape, camouflage, and webbed feet are all examples of which type of adaptation
Answer:
beak shape: used to help an animal eat food like tearing apart food or either cracking nuts.
Camouflage: the color or shape of an animals body helps it blend into its envierment.
weebbed feet: help animal's propel themselves through the water with ease. This can help the animal swim faster to
catch prey or escape a predator. Also, if an animal has to swim long distances,
webbed feet can help it save energy so it can swim farther.
Explanation:
Hope this helps
Darwin's theory of evolution did NOT contain the concept that
O favorable traits are passed from one generation to the next.
O resources are unlimited in environments.
genetic variations are produced by mutations and sexual recombination.
organisms that are best adapted to their environment survive
Answer:
favorable traits are passed from one generation to another
Explanation:
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Can u plz tell me five facts about the primary succession
Answer:
Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier.
Explanation:
In the troposphere, the higher the altitude (distance from the ground), the _______ the atmospheric pressure.
Answer:
Explanation:
The troposhere is the lowest layer in the atmosphere and the largest in mass taken about 80% of the mass.
The higher the altitude in the troposphere the lower the atmospheric pressure. At the bottom of troposphere the air is very warm and it gets cool as one moves through the troposphere. The density of the air also decrease with altitude or height above the sea level and this cause the cabins of high-flying jet aircraft to be pressurized.
The atmospheric pressure in the troposphere is lower with higher the altitude (distance from the ground).
What is troposphere?The troposphere is the lowest layer of the atmosphere of Earth. This layer contains the 75% of total mass of the atmosphere.
The variation in the temperature and atmospheric pressure in troposphere layer-
Temperature- The temperature of troposphere is decreases with increasing the altitude of this layer. Atmospheric Pressure- Troposphere ranges the atmospheric pressure between 1000 millibars to the 100 millibars. The value of atmospheric pressure is decreases with increasing the altitude of this layer. It drops 1 inch of Mercury per 1000 ft above the level of the sea.Thus, the atmospheric pressure in the troposphere is lower with higher the altitude (distance from the ground).
Learn more about the troposphere here;
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Chelsea is reading about astronauts. She discovers that astronauts weigh less on the Moon than they do on Earth. Which of the following best explains why astronauts weigh less on the Moon than on Earth?
Group of answer choices
Earth's gravity is stronger than the Moon's.
Astronauts have less density on the Moon.
Earth has more friction than the Moon.
Astronauts have more mass on Earth than on the Moon
I need help fast please!
Answer:
Kinetic energy, I think, but I'm not 100% sure
The coral reef has specific temperatures and sunlight each day, as well as many types of corals and fish that live there. What level of organization is the coral reef?
A. Organism
B. Population
C. Community
D. Ecosystem
Answer: Organisms
Explanation: Shelter, find food, reproduce, and rear their young in provide jobs for local communities, and offer opportunities for recreation. These ecosystems are culturally important to indigenous people
A mutation was found in which the DNA sequence changed from 5' CCCGGGAGA 3' to
5' CCCAGA 3' What kind of mutation is this?
O Deletion
O Frame-shift
Insertion
Substitution
Answer:
Deletion beacuse it is missing the GGG
NEED HELP PLS DUE IN 30 MINS Solve 1-5
What was the general pattern of population growth in the greater Atlanta area, from 1990 to 2000
Answer:
Positive growth.
Explanation:
The general pattern of population growth in the greater Atlanta area from 1990 to 2000 is positive means there is increase occur in the population. The population of greater Atlanta in 1990 is 2,184,000 while on the other hand, the population of Atlanta is 3,522,000 in the year 2000. So there is 1,338,000 people increase occur in 10 years of duration from the year 1990 to 2000. So we can conclude that the pattern of population is positive and upward.
Why is the color of blood carried by veins dark red?
veins are further below the skin and more difficult to see
this blood has no carbon dioxide to color it
this blood has a low oxygen content
this blood has a high oxygen content
The reproductive handicap for sexual reproduction refers to __________. View Available Hint(s) The reproductive handicap for sexual reproduction refers to __________. diluted genetic investment in offspring dependence on hormonal cycles the need to provide energy for the offspring the difficulty of finding mates the need for maturation prior to reproduction
Answer:
diluted genetic investment in offspring.
Explanation:
Reproduction can be defined as a biological process which typically involves living organisms producing an offspring.
Basically, there are two (2) methods of reproduction and these are;
I. Asexual reproduction: it involves the cloning of a living organism to produce an offspring because there is only a single parent.
II. Sexual reproduction: it involves the combination of the genome (gamete) of a male and female living organism during fertilization.
Generally, asexual reproduction produces more reproductive offsprings than sexual reproduction, this is referred to as a reproductive handicap.
Hence, the reproductive handicap for sexual reproduction refers to diluted genetic investment in offspring.
This ultimately implies that, the sexually reproducing female would have a 50% genetic material passed to its female and male offspring.
However, sexually reproducing female has 100% transfer of her genetic materials through asexual reproduction.
The blood in veins is
d. traveling to the heart.
b. moving in single file.
a. leaving the lungs.
c. carrying oxygen.
Answer:
D. Traveling to the heart
Explanation:
The arteries carry oxygen and nutrients away from your heart, to your body's tissues. The veins take deoxygenated blood from the tissues and back to the heart.
Which of these is an individual effort for saving a habitat? Select all that apply.
A. using fertilizers always
B. establishing more open spaces
C. using too many chemicals
D. establishing new regulations
E. using less fuels
Answer:
B, D and E
Explanation:
For this structural characteristic, decide if it is a characteristic of DNA , a characteristic of RNA , a characteristic of both DNA and RNA , or a characteristic of neither DNA nor RNA .
It contains thymine as a base.
state two changes which take place in the flower after pollination
After pollination and fertilization following changes occur in a flower: (i) The petals, stamens, style and stigma of the flower fall off. (ii) Sepals dry up and hold the ovary. (iii) The ovules confined in the ovary develop into seeds.
answer this one ABC or D
B!
Hope this helped :)
what would happen to the ecosystem in the terrarium if it were a closed system for energy
Answer:
It would mimic the behavior of the earth's atmospheric atmosphere where you have a water cycle and sunlight which aids photosynthesis.
Explanation:
A terrarium is a glass container that can be covered and opened at will. It can be used to grow a plants using soil.
When it is sealed, water evaporates onto the body of the glass and runs down the sides of the glass only to be evaporated again and the same process happens over and over again.
Because the plants are in a glass container, they can still access sunlight for photosynthesis.
Sometimes the glass is opened up for maintenance. Maintenance here refers to the removal of algae that sometimes forms on the inner walls of the terrarium. Sometimes, there is also need to add water to the ecosystem in the terrarium given that the water inside usually escapes via evaporation over time.
Cheers
Answer: everything in it would die
Explanation:
Offspring that are produced through sexual reproduction are usually similar, but never identical to their parents. This is because?
OA.
genes are not transferred between parents and offspring during sexual reproduction.
ОВ.
half of the offspring's genes come from one parent while the other half comes from the other parent.
OC
genes mutate during every occurrence of sexual reproduction,
OD
all of the offspring's genes only come from one parent or the other.
Answer:
half of the offspring's genes come from one parent while the other half comes from the other parent.
Explanation: