Answer:
Explanation:
A space inside the cell that is used to store substances and help the cell keep its shape. Chloroplasts – Structures that contain the green pigment chlorophyll, which are a key part of photosynthesis..
Which of these is the source of the variation in wing color within the Peppered Moth population?
natural selection
pollution
genetic variation
Answer:
Genetic variation
Explanation:
It could lead to natural selection, but natural selection isn't the cause. Many years down the road you could see a particular variation having a higher population, which is the result of natural selection/survival of the fittest via better camouflaging from predators.
What is the purpose of the pulmonary artery?
Answer:
Hey mate.....
Explanation:
This is ur answer....
Pulmonary circulation pumps deoxygenated blood through the pulmonary artery. This artery divides above the heart into two branches, to the right and left lungs, where the arteries further subdivide into smaller and smaller branches until the capillaries in the pulmonary air sacs (alveoli) are reached.
Hope it helps!
mark me as the brainliest.....
Follow me!
Eukaryotic cells and prokaryotic cells have some parts that are different. Which of the following would you find only in a eukaryotic cell?
A. membrane-bound organelles and a nucleus
B. a nucleus and organelles without membranes
C. a cell membrane and organelles without membranes
D. membrane-bound organelles and DNA in cytoplasm
Answer:
A
Explanation:
Answer:
A
Explanation:
Within a eukaryotic cell, each membrane-bound structure carries out specific cellular functions. Here is an overview of many of the primary components of eukaryotic cells.
Nucleus, Nucleolus, Plasma membrane, Cytoskeleton or cell wall, Ribosomes, Mitochondria, Cytoplasm, Cytosol, Endoplasmic reticulum, Vesicles and vacuoles.
A high population of greater prairie chickens once inhabited the prairies of Illinois. The conversion of the prairies into agricultural land caused the chickens to lose their habitat. Studies have concluded that this change greatly reduced the greater prairie chicken population. The habitat loss also resulted in a decrease in the population’s genetic variation.
Which change in the gene pool occurred in the greater prairie chicken population?
gene mutation
gene flow
genetic drift
genetic resistance
The answer is C. genetic drift
Genetic drift affects the population size and decreases genetic variability by setting some alleles and losing others. Option C. The exposed example is a case of genetic drift - bottleneck effect -.
What is genetic drift?
Genetic drift is an evolutive force. It refers to the random change that occurs in the allelic frequency of a population through generations.
The magnitude of this change is inversely related to the size of the original population.
These changes produced by genetic drift accumulate in time. Eventually, some alleles get lost, while some others might set. Genetic variation in the population decrease.
Genetic drift affects a population and reduces its size dramatically due to
a disaster or pressure ⇒ bottleneck effectthe population split ⇒ founder effect.The exposed example is a case of the bottleneck effect. The conversion of the prairies into agricultural land and the consequent habitat loss is the pressure acting on this prairie chickens population. The population decreases in size and decreases its genetic variation.
You will learn more about genetic drift at
https://brainly.com/question/12735785
https://brainly.com/question/17540937
The development by gardeners of a new color in a rose through breeding is the result of
• artificial selection
•natural selection
•overproduction
•descent with modification
Answer:
Artificial Selection
Explanation:
Sustainable forestry: seeks to conserve forests for the long-term commercial harvest of timber and non-timber forest products by maintaining a mix of forest trees, by age and species, rather than imposing a monoculture. due to the complexity of goals, is most effective when it involves cooperation among environmentalists, loggers, farmers, indigenous peoples, and local, state, and federal governments. approaches vary from one forest ecosystem to another, in response to different environmental, cultural, and economic conditions. is all of the above.
Answer:
Yes, it is all of the above.
Explanation:
Yes, all the above statements are necessary for sustainable forestry because trees and other wild plants of the forest are necessary for all farmers, loggers, environmentalists, indigenous peoples and for the governments. The environmentalists study on these plants to find out the impact of these different plants on the environment, the farmers cultivate trees and plants to get money by selling it, the employment of loggers also related to these forests and the indigenous peoples also gain benefits by gaining food as well as medicines from it. This forest also fulfill the needs of wood and other products of the country.
Which best describes transduction bacteria
Answer:
Bacteria transferring DNA with a bacteriophage and bacteria taking DNA from their environment both best describe transduction in bacteria.
Answer:
Bacteria transfer DNA with a bacteriophage.
Explanation:
how does dna replicate
Complete each statement. 7. ________________ , guanine (G), cytosine (C), and thymine (T) are the four _________________
Answer:
Adenine
Nitrogenous bases
Explanation:
What is it called when an offspring's trait is identical to the parent and it's siblings?
purebred
dominant
artificially selected
recessive
Answer:
Purebred
Explanation:
Looked it up
Mark brainliest pls, and hope this helps!
write any three methods of controlling flood landslide and soil erosion
Is it possible to have a knockout mutant plant that shows no visible phenotype that is different from the wild-type plant?
Answer:
Molecular genetic approaches to the study of plant metabolism can be traced back to the isolation of the first cDNA encoding a plant enzyme (Bedbrook et al., 1980), the use of the Agrobacterium Ti plasmid to introduce foreign DNA into plant cells (Hernalsteens et al., 1980) and the establishment of routine plant transformation systems (Bevan, 1984; Horsch et al., 1985). It became possible to express foreign genes in plants and potentially to overexpress plant genes using cDNAs linked to strong promoters, with the aim of modifying metabolism. However, the discovery of the antisense phenomenon of plant gene silencing (van der Krol et al., 1988; Smith et al., 1988), and subsequently co‐suppression (Napoli et al., 1990; van der Krol et al., 1990), provided the most powerful and widely‐used methods for investigating the roles of specific enzymes in metabolism and plant growth. The antisense or co‐supression of gene expression, collectively known as post‐transcriptional gene silencing (PTGS), has been particularly versatile and powerful in studies of plant metabolism. With such molecular tools in place, plant metabolism became accessible to investigation and manipulation through genetic modification and dramatic progress was made in subsequent years (Stitt and Sonnewald, 1995; Herbers and Sonnewald, 1996), particularly in studies of solanaceous species (Frommer and Sonnewald, 1995).
How are metations and adaptations are related
Answer:
A mutation that occurs in body cells that are not passed along to subsequent generations is a somatic mutation. ... Alternately, if the mutation has a positive affect on the fitness of the offspring, it is called an adaptation. Thus, all mutations that affect the fitness of future generations are agents of evolution.
Explanation:
You have written wrong spelling its mutation.
what is propanone is used to remove varnish
Answer:
Acetone, a colorless liquid also known as Propanone, is a solvent used in manufacture of plastics and other industrial products.It is also used in nail polish removers and can remove most stains including varnish hope this answer helps
An energy-rich organic compound needed by organisms is
1.
water
2.
salt
3.
oxygen
4.
glucose
Which statement best summarizes why the cell theory was developed over time?
A. As new cells evolved they proved the cell theory was inaccurate.
B. The discovery of new evidence resulted in changes to the cell theory.
C. Changes in cell models showed the cell theory was based on opinion.
D. The cell theory was modified with the discovery of every new organelle.
The statement 'the discovery of new evidence resulted in changes to the cell theory' best summarizes why the cell theory was developed over time.
The cell theory is a model in cellular biology that states all cells evolved from a pre-existing cell.This theory also states that all organisms are composed of cells.The cell theory was further modified as new evidence emerged in the scientific community.In conclusion, the statement 'the discovery of new evidence resulted in changes to the cell theory' best summarizes why the cell theory was developed over time.
Learn more in:
https://brainly.com/question/1988910
The possibility for either green or yellow seeds in pea plants ia an example of possible
Answer:
Alleles or heterozygous. If you need to pick one, then probably alleles?
Explanation:
what does the G and A represent in GAA-TTC-GCA
Answer:
I think the answer would be guanine and adenine
please help!!!
What are things that tend to gain electrons and become negative
Explanation:
This electron exchange results in an electrostatic attraction between the two atoms called an ionic bond. An atom that loses one or more valence electrons to become a positively charged ion is known as a cation, while an atom that gains electrons and becomes negatively charged is known as an anion.
A. Describe what happens to the trilaminar disk
Answer:
Wilmer sillas ella ella ella ella ella ella ala si el el al al al al al al
0
1 pts
Which group consists of an example from each of the 4 organic macromolecules?
O enzymes, DNA, steroids, starch
O enzymes, carbon dioxide, water, oxygen
O enzymes, starch, carbon dioxide, steroids
O enzymes, water, steroids, oxygen ?
How many chromosomes are in the gametes of an organism that has 88 chromosomes in its diploid cells?
Answer:
It is a worldwide universal truth that all living organisms produce gametes which comprised of a quasi or half number of Chromosomes in contrast to their inventive number of chromosome. Generally, in simple words, the gametes ploidy will be going halves on than the ploidy of the organism.
Ovum is the ‘female’ gamete which is truly the new-fangled individual of the species. It is basically, the solo cell in which disunion progression take place and baby will make. The ovum being single cell comprised of, ample chromosomes set. In humans Ovum chromosomes is 22 and one more X chromosome overall, making it 23 chromosomes. �The ovum required chromosomal set to become doubled and to the concert itself in the baby by development and cell division. This can be done once after when comprehensive and identical chromosomes of sperm combined with ovum after mating. Therefore, humans body cells comprised of 46 chromosomes.
Explanation:
please rate thank and follow
PLEASE HELP!!!!!!!!
Choose: one specific animal
State: whether it is an invertebrate, fish, amphibian, reptile, bird or mamal
Describe: some of its adaptations and characteristics
Describe: how this animal is important to their ecosystem. How do they help to keep their ecosystem in balance?
Answer:
Red kangaroo
Mammal
Red/brown in colour to camouflage with environment, have big strong feet which they use to jump high, active at night when temperatures aren't high
They control the population of wild grasses
Which steps are important when designing and conducting a scientific experiment
explain explicitly how 3 body systems work together
Answer/Explanation:
Using body systems respiratory, circulatory, and muscle.
The respiratory, circulatory, and muscle work together because the circulatory carries blood to the muscles and respiratory systems. The respiratory systems gives breathe and makes it able to live so the other two can function. The muscle systems helps move using the breath of life and the blood from the circulatory.
Hope this helps :)
Use your understanding of prevention and treatment of viruses to answer the questions below.
A
is a substance containing incomplete portions of a virus that produce an immune response when injected into the body.
I'm a bit confused about this question. But I will try my best to answer. :)
To prevent a certain virus, or increase someone's immunity towards a virus, doctors give patients a shot/vaccine. For example, people get a flu shot yearly to help prevent them from getting the flu. The shot contains a small portion of the flu itself. The flu remains dormant until the body decides to activate it or fight it off. This also helps the body become more immune to the virus/sickness and fight it off easier.
I hope this helps! :)
A hapten is a substance containing incomplete portions of a virus that produce an immune response when injected into the body.
What is the Immune response?The immune response may be defined as the type of reaction that occurs in response to specific antigens or foreign agents. Such types of responses defend the organism against foreign invaders.
A hapten is essentially an incomplete antigenic particle. Such small substances or molecules only elicit an immune response when attached to a carrier known as proteins.
Carrier molecules typically do not elicit an immune response by themselves.
Therefore, it is well described above.
To learn more about Immune response, refer to the link:
https://brainly.com/question/16578495
#SPJ2
A community is
all the organisms living in an area that have the potential to interact
all the individuals of a species that can potentially interact
all the animal species that can potentially interact with all the plant species in an area
all the organisms and abiotic components of an area that have the potential to interact
A place filled with people that will assist in raising your child...and bully them, peer-pressure them, etc.
Answer:
all the organisms living in an area that have the potential to interact
Explanation:
An advantage of using natural gas, rather than oil, as a fuel is that natural gas is less of a contributor to global warming because it does not release CO2 when it burns less of a contributor to global warming because it does not release CO2 when it burns A less expensive because most reserves are in the United States less expensive because most reserves are in the United States B more abundant because it is a by-product of photosynthesis more abundant because it is a by-product of photosynthesis C cleaner because it burns more completely cleaner because it burns more completely D safer to store because it is a gas
Answer:
A. less expensive because most reserves are in the United States
Explanation:
Natural gas is less expensive because in the united states there are huge amount of reservoirs present. According to the research, the United States has about 475 trillion cubic feet of proved reserves and 2,392 trillion cubic feet of unproved reserves of dry natural gas. It is a clean source of energy comparatively coal and fossil fuel because it produces less amount of carbondioxide and other pollutants in the atmosphere so that's why the natural gas is less expensive and prefers in usage.
3. Which part of the digestive system compacts waste and makes vitamin K?
O the pancreas
O the liver
O the colon
O the stomach
pls help:
why would you expect Greenland to have a higher albedo than its surrounding areas?
The albedo of the ice sheet is high in winter when much of Greenland is covered by fresh snow.
Greenland is filled with ice and has a higher reflectance rate as in winters it's covered with fresh snow.
Where is Greenland?The greenland is an island nation and lies between the arctic and Atlantic ocean. Has an area of 2.166 million square km and is among the largest island in the world.
It has the third-largest area in North America after Canada, The lowest temperature is recorded in Greenland in the northern hemispheres. Greenland is Greenland snow is thick and fresh in winter this creates a higher albedo.
Find out more informaion about Greenland.
brainly.com/question/539673