Explanation:
The four nitrogenous bases are A, T, C, and G. They stand for adenine, thymine, cytosine, and guanine. ... Adenine always pairs with thymine, and cytosine always pairs with guanine. The pairing nature of DNA is useful because it allows for easier replication.
The data in the diagram is evidence that -
Answer: G. Horses slowly developed over time
Explanation:
Can y’all help me with 3 & 4 please I beg you I need to pass this test
Answer:
A
Explanation:
I think an untreated water can carry disease causing organisms and make people sick
Some viruses replicate via the lytic cycle by
Surface mining for coal involves removing all the vegetation and rock above the coal being mined. Which two of Earth's subsystems are most immediately affected by surface mining? Select one: A. Biosphere and hydrosphere. B. Geosphere and biosphere. C. Hydrosphere and atmosphere. D. Atmosphere and geosphere.
Answer:
B. Geosphere and biosphere.
Explanation:
Earth as a planet can be subdivided into subsystems called "spheres". The spheres that make up the Earth are as follows; geosphere or lithosphere, hydrosphere, atmosphere, biosphere etc.
As related to this question:
- The GEOSPHERE refers to the solid part of the Earth, which involves rocks, minerals etc. of the Earth crust. It can be regarded to be the physical land.
- The BIOSPHERE refers to a collection of all the living organisms inhabiting the Earth. This includes plants, animals, microbes etc.
According to these question, surface mining for coal is an act that involves removing all the vegetation and rock above the coal being mined. This means that the physical land/rocks (geosphere) and vegetation of plants (biosphere) covering the coal beneath are affected. Hence, based on the explanation above, GEOSPHERE and BIOSPHERE are two of Earth's subsystems most immediately affected by surface mining.
Which is not part of the function of the normal cell cycle? (A) cell growth (B) DNA replication (C) cell division (D) cell death
Cell death is not part of the function of the normal cell cycle, a strictly controlled cell mechanism known as programmed cell death, or apoptosis, hence option d is correct.
What is cell death?Eliminates cells that are no longer required or pose a hazard to the organism in multicellular creatures.
The body's mechanism of cell death is crucial. When cells are not required, as at some developmental phases, for example, they are removed.
For instance, the outer layer of the skin is formed of dead cells, which form a structure in the body that is also apoptosis.
Therefore, cell growth, DNA replication, cell division are part of the cell cycle, a controlled cell death mechanism known as programmed cell death, or apoptosis, hence option D is correct
Learn more about cell death, here:
https://brainly.com/question/14263310
#SPJ2
Question 24 (6 points)
✓ Saved
Within a forest and stream ecosystem, there is a food web that includes grasses,
rabbits, grasshoppers, foxes, and snakes. Answer the following questions for 2
points each:
1. Identify TWO density-dependent limiting factors that could affect the rabbit
population.
2. Explain how a shortage of ONE of the limiting factors would impact both a large
population of rabbits and a small population of rabbits.
3. Identify ONE other organism for which the rabbits would be a limiting factor and
explain how the original limiting factor in question 2 would affect the second
organism.
Answer: Question 24 (6 points) ✓ Saved Within a forest and stream ecosystem, there is a food web that includes grasses, rabbits, grasshoppers, foxes, and snakes. Answer the following questions for 2 points each: 1. Identify TWO density-dependent limiting factors that could affect the rabbit population. 2. Explain ...
Explanation:
a food web that includes grasses, rabbits, grasshoppers, foxes, and snakes. Answer the following questions for 2 points each: 1. Identify TWO density-dependent limiting factors that could affect the rabbit population. 2. Explain ...
what biome receives a lot of rain, moderate temperatures, and a long growing season
A. coniferous forest
B. taiga
C. deciduous forest
D. grassland
Biome that receives a lot of rain, moderate temperatures, and a long growing season is grassland. Thus, option D is correct.
What is ecosystem?Ecosytem is defined as a community that is biological by nature and the organism in that community attract with each other as well as their physical environment. Ecosystem is consist of both biotic as well as abiotic factor. The living components of ecosystem comes in category of biotic factor and non living components of ecosystem comes in category of abiotic factor.
Biodiversity is all the different kinds of life living in a particular area like the varity of animals, plants, fungi and microorganisms like bacteria and virus that plays a major role in framing of natural world usually three levels of biodiversity are observed and these are genetic species, and ecosystem diversity.
Biodiversity is very important for the process that's support all life present on earth including human.
Therefore,Biome that receives a lot of rain, moderate temperatures, and a long growing season is grassland. Thus, option D is correct.
Learn more about ecosystem here:
https://brainly.com/question/13979184
#SPJ2
Predict what color of monkey flower has the highest likelihood of occurring in a habitat with a large population of bees and few hummingbirds. Graph the distribution of color in monkey flowers in this habitat to support your answer.
Answer:
Monkey flower plants have opposite, undivided leaves and solitary flowers with a two-lipped open corolla (fused petals). The flowers of some species are said to resemble a monkey’s face. The herbaceous species typically grow most abundantly in wet areas, usually near running water.
Explanation:
A student collected the animal shown below on field trip. The student used a dichotomous key and a microscope to classify the animal.
How should this animal be classified?
A. Arthropoda
B. Annelida
C.Mollusca
D. Platyhelminthes
Answer: The answer is D: Platyhelminthes
Explanation: took the test and it came back
What role do organisms, such as bacteria or fungi, that feed on and break down dead plant or animal
matter and make nutrients available play in an ecosystem?
producers
predators
decomposers
consumers
NO LINKS
The colour of chillies at the time of ripening changes from green to red.
give reasons
Answer:
Peppers can be eaten at any point of ripeness, but the color change in ripening peppers is caused by the degradation of chlorophyll, which occurs at the same time as the seeds mature.
what is the difference beween respiration and breathing
Answer:
Breathing: is the physical process of exchanging gases
respiration: is a chemical process that takes place at a cellular level and produces energy.
The amount of substance given one time
Answer:
moles
hope this helps
have a good day :)
Explanation:
why do snails like leaf litters
Answer:
They will eat the biofilm that grows on the leaves. My snails love my oak leaf litter, as do my loaches. They eat the film off them.
Explanation:
As an embryo developed, identical cells give rise to specialized cells that platform different functions.
Answer:
As an embryo develops, identical cells give rise to specialized cells that perform different functions.
Explanation:
As an embryo develops, the cells divide, giving new ones. As the cells grow and continue to reproduce themselves, they differentiate, becoming specialized cells. These cells will be located in a particular part of the embryo and will perform a specific function. The shape, size, and organelles vary according to their role.
What book should I read to enrich my biology knowledge?
classifying burning oil as clean up method
a. mechanical
b. chemical
c. biological
Answer:
Chemical, because the chemical reaction of the oil being lit on fire cannot be reversed
Explanation:
Please help me. I'll give you the brainliest.
Melinda and Bart are sitting beside each other in the third car of a roller coaster.
From whose reference point are Melinda and Bart moving away from the observer?
A. a person sitting in the first car of the roller coaster
B. a person standing on the ground behind the roller coaster
C. a person sitting in the last car of the roller coaster
D. a person standing on the ground in front of the roller coaster
Answer:
The answer option that you are searching for today is the option "B."
From the reference point of a person standing on the ground in front of the roller coaster, Melinda and Bart are moving away from the observer. Therefore, option (D) is correct.
What is the reference point?A reference point is a fixed location or object used to determine the position, speed, and direction of motion of an object or person in motion. It is used in physics and other sciences to describe the motion of objects.
This is because the roller coaster is moving forward along the track, and the third car, where Melinda and Bart are sitting, is behind the first and second cars. As the roller coaster moves forward, the distance between the third car and the person standing on the ground in front of the roller coaster increases, indicating that Melinda and Bart are moving away from that observer. Therefore, the correct option is D, "a person standing on the ground in front of the roller coaster."
Learn more about reference point, here:
https://brainly.com/question/30192856
#SPJ2
Fossils and Evolution On Study Island
A team of scientists are studying three different layers of sedimentary rock to learn about a particular reptile species. In the layer of rock that is closest to the Earth's surface, the reptiles' teeth fossils are found to be short and straight. In the layer below, the reptiles' teeth fossils are found to be long and straight. In the layer below that, the reptiles' teeth fossils are found to be long and curved.
Based on this information, the reptiles today most likely have
A.
long, straight teeth.
B.
no teeth.
C.
long, curved teeth.
D.
short, straight teeth.
Answer: short, straight teeth
Explanation: study island
If only one species is considered the 'fittest', why do we still have so many variation among species?
Answer:
Variation occurs in species with the genes resulting in the traits and physical characteristics that make it possible for them to be among the fittest for a number of reasons:
1. Mutation
2. Recombination and
3. Migration
Explanation:
Mutations: A mutation is a deviation from the norm in a DNA sequence. It can be stimulated by errors during the DNA replication process which happens as the cell is dividing, or by exposure to ionizing radiation, chemicals, or viral infection (whether artificial or natural).
It is noteworthy that naturally, without any human intervention, the possibility of a spontaneous mutation is very low.
Recombination: This refers to the creation of new fusion of genes in the offspring that did not occur in the parents by the processes of crossing-over and independent assortment. Independent assortment meaning that the allele the gamete received for one gene was not influenced by the allele received for another gene.
Migration: Variation by migration here refers to the introduction of new genes from into one population by another. This could happen when a new population arrives at an existing one or when an existing one migrates to another population.
We can say for example that, genes from Americans have “migrated” into the population of African origin in America given the continuous immigration of Africans into America.
So in both populations, there are very fit species, but when their genes are mixed during cross-reproduction, variation arises.
Cheers
Use the words flexor and extensor to explain how muscles work in pairs.
By contracting, muscles pull on bones and allow the body to move. ... Each muscle in the pair works against the other to move bones at the joints of the body. The muscle that contracts to cause a joint to bend is called the flexor. The muscle that contracts to cause the joint to straighten is called the extensor
An elementary school science teacher decided to liven up the classroom with a salt-water aquarium. Knowing that salt-water aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ectoproct, a sea star, and several gastropod varieties. Lastly, some vertebrates - a parrotfish and a clownfish - were added. She arranged for daily feedings of copepods and feeder fish.
The teacher was unaware of the difference between suspension feeding and predation. The teacher thought that by providing live copepods (2 mm long) and feeder fish (2 cm long) the dietary needs of all of the organisms would be satisfied. Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)?
1. sponges
2. coral animals
3. bivalves
4. sea stars
5. shrimp
Answer:
sponges
Explanation:
because sponges need photosynthesis in order manufacture their food
The organisms namely sponges and coral animals are most likely to starve to death in the lack of photosynthetic endosymbionts. The correct option is 1 and 2.
What are endosymbionts?Endosymbionts are organisms that live in close proximity to another cell or organism.
As sponges are predominantly filter feeders, consuming detritus, plankton, viruses, and bacteria. They also absorb nutrient solution from water directly through their pinacocyte cells.
Due to the lack of photosynthetic endosymbionts the organisms namely sponges and coral animals are most likely to starve.
Thus, the correct option is 1 and 2.
For more details regarding endosymbiosis, visit:
https://brainly.com/question/15829977
#SPJ2
PLEASE HELP AM HAVING A MENTAL Breakdown!!!
What enzyme opens up in the DNA into two single strands ?
Answer:
DNA helicase
Explanation:
The image of this question shows the replication of DNA into two identical copies. However, before this occurs, the double-stranded DNA needs to be unwound or separated so that each single strand can serve as a template for a new strand.
An enzyme called DNA helicase is responsible for the separation of the DNA molecule into single strands. After which, DNA polymerase begins to add nucleotides to each single strand of DNA.
6N right and 10N & 2N left
Sand for beaches comes from rocks in the area that are weathered down, and
their sediment is deposited in the area beaches. The beaches are then eroded,
and the sediment is moved away from the beaches. If rocks stopped weathering,
how would the beach change?
Answer:
Beaches would shrink until they were no longer there because the sediment is pulled away from the shores by the tide and there would be no new rock sediment to replace the old rock sediment.
20 points
1. Some students used vinegar to dissolve away the shells of three eggs
and used these eggs as models of human red blood cells. The students
observed the changes in the eggs when they were placed in different
solutions. Which statement best describes the role of the cell membrane
in this model? *
Answer:
where is the 20 points!!!!!!!
According to biological classification, which of these pairs represents animals that are the MOST closely related? A) crabs and fish B) crabs and snakes C) crabs and penguins D) crabs and grasshoppers
Answer:
crabs and fish.................
Answer:
crab and grasshopper???....
Explanation:
Select the correct answer.
Which of these activities increases the amount of carbon in the atmosphere?
A. animals eating plants
B. burning of fossil fuels
C. fossilization
D. photosynthesis
Reset
Answer:B. burning of fossil fuels
Explanation:
How will antibiotic resistance affect human populations if no action is taken by our healthcare system?
Answer:
Bacteria, not humans or animals, become antibiotic-resistant. These bacteria may infect humans and animals, and the infections they cause are harder to treat than those caused by non-resistant bacteria. Antibiotic resistance leads to higher medical costs, prolonged hospital stays, and increased mortality
Energy + 6 CO2
6 H20 → CH2206
602
Photosynthesis
O Cellular Respiration
help ‼️
Answer:
photosynthesis
Explanation: