Answer:
In all organisms, the instructions for specifying the characteristics of the organism are carried in DNA, a large polymer formed from subunits of four kinds (A, G, C, and T). ...
Most of the cells in a human contain two copies of each of 22 different chromosomes. ...
Changes in DNA (mutations) occur spontaneously at low rates.
Most seed plants today belong to the division
a. psilophyta
b. arthrophyta
c. pterophyta
d. anthophyta
Answer:
most seed plants today belong to anthophyta i think
Dichotomous key for leaves
Answer:
I believe that your answer is Magnolia.
help need answer asap !!
Why are matter and energy cycles important to an ecosystem ?
Answer:
Carbon and nitrogen are examples of nutrients. Unlike energy, matter is recycled in ecosystems. ... Decomposers release nutrients when they break down dead organisms. The nutrients are taken up by plants through their roots
Explanation:
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Scientists believe that, over time, mutation and different environmental influences can cause multiple species to evolve from a single earlier species in a process called speciation.
The diagram below represents this process.
As seen in the diagram, what does mutation directly create?
A. extinction
B.darker colored offspring
C.identical offspring
D.genetic variation
FIRST ONE TO ANSWER AND CORRECT GETS BRAINLYIST AND 100 POINTS!!!!!!!!!!!!!!!!!
which statement best describes one positive and one negative way that society was impacted by the use of DDT?
A. Society was positively impacted by increased insect control in crops, but it was negatively impacted by harmful chemicals.
B. Society was positively impacted by insect resistance, but it was negatively impacted by harmful chemicals.
C. Society was positively impacted by increased insect control in crops, but it was negatively impacted by malaria and typhus.
D. Society was positively impacted by insect resistance, but it was negatively impacted by malaria and typhus.
Answer: The answer is A
Explanation:
Society was positively impacted by increased insect control in crops, but it was negatively impacted by harmful chemicals. Hence option A is correct.
What is DDT?DDT is defined as the 1940s saw the development of the first synthetic modern pesticide. It aided in the prevention of illnesses like typhus and malaria. Researchers classify DDT as an endocrine-disrupting chemical, or an EDC, because there is evidence that it alters and disrupts hormones crucial for healthy health, including reproductive health, as well as neurological and immunological processes.
Even while scientists began to raise concerns about such risks in the middle of the 1940s, it wasn't until the publication of Rachel Carson's book Silent Spring in 1962 that the use of the chemical became the subject of broad public concern. DDT, often known as dichlorodiphenyltrichloroethane, is a pesticide used in farming. DDT usage was outlawed in the US in 1972. DDT is still used in several non-American nations to keep mosquitoes that cause malaria at bay.
Thus, society was positively impacted by increased insect control in crops, but it was negatively impacted by harmful chemicals. Hence option A is correct.
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Help me ASAP! CORRECT ME IF AM WRONG TY BOYS AND GIRLS
Answer:
CORRECT
Explanation:
7. What codes for development and growth?
a. Heterotrophs
b. Genetic Material
Cellular Respiration
d. Multicellular Nuclei
Cellular Respiration codes for development and growth. The correct option is C.
Thus, DNA (deoxyribonucleic acid), which makes up the majority of genetic material, contains the instructions for an organism's growth and development. The instructions or genetic code that determines an organism's traits, capabilities, and attributes are found in its DNA.
The genetic code is used to produce proteins and other compounds required for growth and development through the process of gene expression. Through reproduction, this genetic information is transferred from parent to child, maintaining a trait's continuity over generations.
Cellular respiration (c) is the mechanism by which cells produce energy by dissolving organic molecules, whereas heterotrophs (a) are organisms that receive their energy by eating other organisms.
Thus, Cellular Respiration codes for development and growth. The correct option is C.
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How does DNA copy itself
Explanation:
DNA unwraps itself before cell division. It helps that each side of the double helix is in opposite direction of the other. Then the DNA polymerase travels around each strand and binds the complementary nucleotides (DNA's building blocks). The process is called DNA replication.
A rapid motor response to a sensory stimulus in which nerve
impulses travel in an arc that includes thespinal cord but not
the brain is known as a
a Reflex
b Spinal motion
C Axon
d All of the above
Answer:
The answer is A. reflex
A population of sixteen emu grew to thirty-nine in one year. After two years, the population had grown to forty-eight. The maximum number of emu that the environment can support is approximately sixty due to limited resources such as food and water.
What is the carrying capacity of the emu population?
sixteen
thirty-nine
forty-eight
sixty
Answer: D. 60
Explanation: Answer is correct in Edge!!! TRUST ME!!! I'm Brainly!!! :)
The carrying capacity is the maximum number of individuals that an environment can support given its available resources and here that is approximately sixty that is the last option.
What is emu population carrying capacity?
in the case of the emu population, the environment may have limited resources such as food and water, which could limit the population size even if there are no other limiting factors. As the population grows, competition for resources could increase, making it harder for individuals to find enough food and water to survive and reproduce.
This could cause the growth rate to slow down or level off as the population approaches the carrying capacity. Other factors that could limit the emu population size include predation, disease, and habitat destruction. If there are predators that feed on emus, the population size could be limited by the availability of prey. Similarly, if there are diseases that affect emus, the population size could be limited by the spread of the disease.
Hence, approximately sixty is the carrying capacity in this case that is the last option.
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10 points
Each of the 4 major biomolecules are made of monomers. The mono in
the word monomer means one. Monomers are building blocks, when the
monomers are put together they build a biomolecule. Monomer means:
Four Building Blocks
Two Building Blocks
One Building Block
O
Three Building Blocks
Answer:
One building block
Explanation:
The prefix mono means one
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2. What 3 smaller parts of the DNA molecule make up a nucleotide?
Answer:
nitrogenous base
a carbon-based sugar molecule called deoxyribose
a phosphorus-containing region known as a phosphate
There are many different types of cells with many different types of cellular structures and functions. Which of these structures is found in all types of eukaryotic cells?
A. chloroplast
B. cell wall
C. nucleus
D. centrioles
Answer:
nucleus
Explanation:
chloroplasts and cell walls are only found in plant (and fungi) cells, while centrioles are only in animal cells.
The structure that is found in all types of eukaryotic cells is the nucleus. The correct option is C.
What are eukaryotic cells?Eukaryotic cells are those cells that contain true cell organelle. These cells are present in the higher organism, and they perform complex functions like replication, mitosis, etc.
There are two types of cells. They are prokaryotic and eukaryotic cells. Prokaryotic cells are those that do not contain an organelle and a nucleus. They are present in smaller organisms.
The nucleus is the brain of cells. It controls all functions of cells, and it contains the genetic material of the organisms. In prokaryotic cells, the nucleus is absent and in eukaryotic cells, the nucleus is present. That is the difference between them.
Thus, the correct option is C. nucleus.
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help its for science
Convert 226 Kelvin to °C (To convert degrees Celsius to Kelvin use the formula K = °C +273 - rearrange if needed, use whole numbers)
Answer:
-47
Explanation:
Which organelles digest waste materials and worn out organelles?
O cell membrane
O chloroplast
nucleus
O lysosome
cell wall
O cytoplasm
mitochondria
O vacuole
Answer:
Lysosomes
Explanation:
break down food molecules, waste products, and old cells.
Moving ions against a concentration gradient requires energy and results 2 points
in uneven concentrations of the ions. ATP powers the pump, allowing it to
create and maintain
of these ions. *
concentration gradients
equilibrium
diffusion
osmosis
Answer:I think osmsis
Explanation:
An organism has a haploid number of 20. What is the organism's diploid
number?
If an individual has the genotype AaBb, what are the combinations of alleles that would be
found in their gametes?
Answer:
There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.
I hope this helped
The combinations in the alleles that are carrying out the genotype of AaBb then at that stage the alleles combinations that will be present in their gametes will be AB, ab, Ab and aB.
What is a genotype ?It is defined as the genetic expression of an individual. It defines the traits and the characters that are present in the individual in order to decide the phenotype of an individual.
In the genotype of AaBb, it is the combination as the both of the genes copies are present and in this case due to very obvious reasons it is the capital one that is going to express itself. The other genes are definitely present but with a effect that will be covered out by the dominant one.
The 4 combinations that will be present are AB, ab, Ab and aB where the 1st one where the both of the dominant ones will be present will be carrying the dominant genes, ab in this the recessive ones will be present and in others ones, one dominant and one recessive is present.
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why are bacteria good for copying large amounts of dna
Answer:Bacteria become ‘factories’ that produce a large number of copies of the recombinant DNA. There are several reasons for the use of bacteria as the host in the recombinant DNA technology. They are; Bacterial cells are easy to grow, maintain, and manipulate in a laboratory.
Explanation:You might wanna change some words i just found it somewhere
Water travels from the roots of a plant to its stems and leaves through__________cells.
Answer:
xylem
Explanation:
Organs are comprised of tissues that work together to perform a specific bodily function. true or false?
Answer:
I do believe that is true.
Explanation:
What are some examples of nutrients that
circulate in blood? Check all that apply.
red blood cells
glucose (a simple sugar)
amino acids
✓
fats
✓
white blood cells
correct order of events during the process of nucleosynthesis?
Answer:
hydrogen nucleus formed, isotope of hydrogen, tritium formed, helium nucleus formed
Explanation:
Answer:
A
Explanation:
took the quiz
When does Algal Bloom occur?
Answer:
Explanation:
Algal bloom occur when there is too much of nutrients especially nitrogen and phosphorus which enhance more growth of algae and green plants in the water either fresh water or Marine water. When there is increase in algae growth, some die and cause discoloration of the water and pollution in the water.
A property can be measured or observed without
matter changing to an entirely different substance.
1.chemical
2.physical
Answer:
physical property is the property that can be observed without the matter under experiment undergo permanent changes it is reversible
what role do the muscles and blood vessels play in the negative feedback loop of thermoregulation?
a. sensors
b. integration centers
c. stimuli
d. effectors
Answer:
This answers may help you
Someone please help!!LEVELS OF ORGANIZATION Identify each of the following as:
A.Ecosystem B.Habitat C.Community D.Population
1. The classroom
2.All the mice in the classroom
3.Only the mice, humans, earthworms, and fish in the room
4.The aquarium (wet soil with dead organisms) that the earthworms live in
Answer:
1 community
2population
3ecosystem
4habitat
Explanation:
the classroom is a community because its people of different cultures and race that come together and be one
all the mice in the classroom are considered a population because population is the number of people in a certain area
in the third statement there are all forms of organisms hence showing the biodiversity that ecosystems tend to have
the aquarium provides shelter to earthworms proving them with food of which a habitat provides both shelter and food
What would be the concern if a high percentage of cells were in some phase of Mitosis?
Answer:
When cell division goes wrong, harmful mutations affect the daughter cells
When these errors are not corrected, one of the daughter cells will be born lacking a particular chromosome while the other will inherit an extra copy of the chromosome
Explanation: