A long time ago, farmers discovered that if they grow the same
crops on a field, then after a few years, the crops grow more slowly. Why does
this happen?
Answer:
Because they don't have fertilizer.
Explanation:
Well, if this was a long time ago, then farmers did not have fertilizer. So, there are bacteria on the roots of plants that convert nitrogen into a usable form. It's very important for growing, and when farmers harvest the crop, not much of the nitrogen is returned to the land, so it is not as fertile. Fertilizer is largely consisted of nitrogen, so that is why farmers use fertilizers today. But "a long time ago," farmers did not have fertilizer.
4. Why does cell division take place in single celled organisms?
A In order for organisms to grow
B.te reproduce and pass along genetic information
C.to enable the organisms to heal injured tissues
D.to make specialized cells for different functions
Answer:
A) In order for organisms to grow.
Explanation:
Tell me if I am wrong. I hope this helps :)
Cell division in a cell takes place in the single-celled organisms to reproduce and pass along the genetic information of the cell. Thus, the correct option is B.
What is Cell division?Cell division is the process of division of cell through which a parent cell divides into two daughter cells with equal genetic content which are similar to the parent cell. Cell division generally occurs as a part of a larger cell cycle in which the cell grows in size and the cell replicates the chromosomal material before it is undergoing cell division.
In the unicellular organisms, cellular division is a significant process through which a unicellular organism undergoes development and result into the formation of a new organism with genetic material which is similar to the parent cell. In the multicellular organisms, process of cellular division helps in maintaining a balance between the genetic material such as the DNA and the RNA contents as well as the nuclear and cytoplasmic contents of the cell.
Therefore, the correct option is B.
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How does structure relate to the function of macromolecules? Include at least one example of how structure relates to the function of macromolecules in your answer.
why are antibiotics unhelpful for treating the common cold ?
A. Colds are cause by Viruses B. Colds are caused by antibiotics C. Antibiotics cannot treat illnesses D. Bacteria are not killed by antibiotics
Answer:
A
Explanation:
antibiotics fight bacteria not viruses
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1. Which statement is true regarding the above picture?
A. Both organisms are probably a similar species.
B. Both organisms had similar development.
C. Both organisms have the same anatomical structure.
D. Both organisms use their limbs for the same function.
Answer:
Im pretty sure its D
Explanation: Brainliest plz trying o level uoHELP MEEEEE!!!! ILL GIVE YOU BRAINLIEST IF YOUR CORRECT
Answer:
The brain and the spinal cord
Explanation:
The central nervous system (CNS) controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.
If the basement membrane was damaged, do you think new epithelial tissue could grow?
Answer: Key words: tissue repair, regeneration, scarring, wound healing, growth factors ... Tissue repair may restore some of the original structures of the damaged tissue ... Initially the new blood vessels are critical in the transport of nutrients and cells to ... the basement membrane is composed largely of nonfibrillar collagen
Explanation:
The nucleotide base sequence of a strand of DNA is TAC-CGG-AGT. Wha
is the sequence of the complementary DNA strand?
Answer:
AUG- GCC- UCA
Explanation:
Hope this is helpful!!
True or False: Cellular respiration is a chemical reaction that occurs in both plant and animal cells. All cells release energy from food through cellular respiration.
True
False
(This is 7th grade science).
Answer:
true
Explanation:
why are advantageous traits more likely to be passed onto offspring
Answer: Variations of traits causes those better suited to the environment to survive and reproduce. ... Why are advantageous traits more likely to be passed onto offspring? Because they are more likely to survive and reproduce.
Explanation:
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Fill in the left side of the chart, with the name of the organism that is the MOST complex to LEAST complex. Then, after all the names of the organisms are on the left, match their name with the correct description of how each organism changed during its development, on the right side.
NAME OF ORGANISM -
- fish
- salamander
- tortoise
- chick
- rabbit
- human
DESCRIPTION -
- Developed limbs, defined features in face, neck, ears, loss of tail, tiny fingers present
- Developed beak, tail shorter, wings and legs developed, head quite large
- Has gills, tail and large underbelly
- Shell developed, limbs have developed, tail is thinner, large belly, long tail, beak
- Tail gone, developed limbs, detailed features in ears and mouth
- fins developed, gills, tail and scales
Answer:
most: human
2nd: salamander
3rd: rabbit
4th: tortoise
5th fish
6th chick
Explanation:
I've done this assignment.
Answer:
most: human
2nd: salamander
3rd: rabbit
4th: tortoise
5th fish
6th chick
Explanation:
hope I helped
a motorcycle is moving at a constant speed of 40 km/h. how long does it take the motorcycle to travel a distance of 10 km.
Air tends to flow faster over ______ formations.
a. sheltered
b. medium-sized
c. shorter
d. taller
Answer:
d. taller
Explanation:
The air tends to flow faster over taller formations. Therefore option D is correct.
When air encounters different formations or obstacles, it can affect the speed and behavior of the airflow.
Taller formations, such as tall buildings, mountains, or cliffs, can create an obstruction in the airflow. When air encounters a taller formation, it is forced to flow up and over the obstacle.
As a result, the airflow can accelerate on the windward side of the formation and create faster wind speeds. This phenomenon is known as an acceleration zone or an area of increased wind speed.
Therefore, the correct option is d. taller formations. Taller formations can cause the air to flow faster due to the presence of acceleration zones or areas where the airflow is forced to speed up as it interacts with the obstacle.
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How Individuals in a species have genetic variation that can be passed on to their offspring
Answer:Genetic variation within a species can result from a few different sources. Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. ... As a result, the tree-colored moths are more likely to survive, reproduce, and pass on their genes
Explanation:
Which of the following are the possible allele combinations from the gametes of an organism with the genotype of AaBb?
A
AB, only
B
AB and ab, only
С
Aa and Bb, only
D
AB, Ab, aB, and ab
Answer:
AB I'm pretty sure ysv6igscugz hii shivhxhix vhzo xvjz joxpj xj
The possible allele combinations from the gametes of an organism with the genotype of AaBb is AB, Ab, aB, and ab. The correct option is D.
What are alleles?Alleles are variations of the gene. The offspring contain genes or traits from both parents. The same trait is given by both parents, one become dominant and one become recessive.
A gamete is a haploid cell that fuses with another cell to produce offspring, This occurs during fertilization. The female gamete is called ova or egg, or male cells are sperms.
When the genotype that will be produced by the fusion of AaBb is AB, Ab, aB, and ab. The small letters denote the recessive gene and the capital letter denotes the dominant genes.
Thus, the correct option is D. AB, Ab, aB, and ab.
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Shiny objects:
Plzzzzzz helpppp
Answer:
A
Explanation:
A. Reflect a lot of light.
When a light hits on a shiny surface or an object, causing a reaction of reflecting it back.
Hope this helps, thank you !!
What is the ultimate energy for your food web?
Answer:
The Sun I believe
Explanation:
Marsupials, such as kangaroos, koalas, and wombats, are mammals that care for their newborn young in a pouch. All
marsupials that are found in Australia are thought to have evolved from a single species that migrated to the island
and then adapted to the various niches. What does this example illustrate?
O behavioral adaptation
Oadaptive radiation
O geographic isolation
O population explosion
Answer:
Adaptive radiation
Explanation:
Describe how DNA and RNA direct cell differentiation. Give an example of how environmental factors may influence cell differentiation.
Answer:
1- DNA: a specific DNA sequence encodes a transcription factor which activates the expression of target genes involved in cell differentiation
2- RNA: short non-coding RNAs may bind to enhancer regions and thus activate the expression of target genes involved in cell differentiation
3- Environmental factor: temperature may control the expression of genes involved in cell differentiation pathways
Explanation:
The deoxyribonucleic acid (DNA) contains the genetic material required to encode proteins. Some of these proteins are transcription factors involved in the activation of diverse signaling pathways, including, for example, cell differentiation and proliferation. On the other hand, microRNAs (miRNAs) are short non-coding RNAs that have the ability not only to repress but also to activate transcription by binding enhancer sequences. The miRNA activation mechanism has recently been discovered. In consequence, some miRNAs may potentially activate the expression of target genes involved in cell differentiation (e.g., c-myc gene). Finally, environmental factors (e.g., nutrient availability, salinity, temperature, etc.) may also activate gene expression and thus control diverse pathways such as cell differentiation, cell proliferation and cell death (apoptosis).
Using a Punnett Square give all of the possible genotypes and phenotypes of the offspring resulting from the following cross: A male that is not color blind and a female that is heterozygous and not color blind.
Color blindness is a sex-linked trait and only occurs on the X chromosome.
Use “B” for normal eyes and “b” for colorblind.
can someone help plssssssssssss
Answer:
Distrupted
Explanation:
the main flow of homestasis was "disrupted" as now some of the cells can't carry out the main bodily funtions.
Answer:
To this Extent - Distrupted
The main flow of homestasis was "disrupted" as now some of the cells can't carry out the main bodily funtions.
list the systems found in animals (not more than five) with their constituent (not less than 2)
Answer: proper functioning of its component cells, tissues, organs, and organ systems.
Explanation:
Plants experience_____
thigmotropism when they use a fence to help stabilize their stems.
A. positive
B. negative
Which choice is an example of a vestigial structure?
a. Liver in humans
b. Heart in fish
c. Legs in turtles
d. Pelvic bone in whales
Answer:
a
Explanation:
youre welcome
Summarize the structure-function relationship of a cell.
What will determine whether or not mutations will be passed to offspring?
The first organisms on Earth were most like today's
O Autotrophs anaerobic
O Eukaryotes
O Protista
O Heterotrophs aerobic
Answer:
O Autotrophs anaerobic
hope it will help you
What soil properties are influenced by microorganism activity?
Answer:
Microorganism activity affects soil acidity and the amount of organic matter in soil. It also affects the nutrient and mineral levels in soil as well as soil structure.
Explanation:
Describe What
happens to a planarian when
it is cut into two pieces?
the cells produced during meiosis are?
Answer:
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. During reproduction, when the sperm and egg unite to form a single cell, the number of chromosomes is restored in the offspring.
Explanation:
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