Light energy from the Sun is used by a plant to perform
photosynthesis. Which structure of the plant helps it to absorb this
energy?
Answer:
Chlorophyll absorbs the energy from the sun.
Explanation:
Light absorbed by chlorophyll excites the electrons in the ring as shown below.
Answer:
chlorophyll
Explanation:
The main pigment used in photosynthesis, chlorophyll, reflects green light and most intensely absorbs red and blue light. In plants, chloroplasts containing chlorophyll are subject to photosynthesis.
A double membrane wraps chloroplasts and includes a third inner membrane, the thylakoid membrane, which forms long folds within the organelle.
Mitosis results in which of the following?
A. Two cells with different genes.
B. Two cells with identical genes.
C. Four cells with different genes.
D. Four cells with identical genes
Answer:
B - Two identical daughter cells
Explanation:
In mitosis, the sister chromatids of each chromosome seperate so each daughter cell takes one chromatid from each chromosome
Before the widespread use of antibiotics, there were very low levels of antibacterial resistance. As antibiotic use has grown, so has the number of antibiotic resistant bacteria. WHY do you think this has occurred?
Answer:
This is because antibiotic resistance can be caused by bacteria getting the ability to be unaffected by the antibiotics Also, people not taking their medication for the entire duration exposes the bacteria to the antibiotic and makes it stronger. Also, when people overuse antibiotics and mutations occur, the bacteria becomes antibiotic resistant.
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Sickle-cell anemia is a recessive trait in humans. In order to express the disease, an affected individual must inherit two recessive alleles (ss).
What is the probability that the offspring of two heterozygous parents will also be heterozygous?
Choose 1 answer:
(choice A)
A
[tex]\frac{0}{4}[/tex]
(choice B)
B
[tex]\frac{1}{4}[/tex]
(choice C)
C
[tex]\frac{1}{2}[/tex]
(choice D)
D
[tex]\frac{3}{4}[/tex]
(choice E)
E
[tex]\frac{4}{4}[/tex]
Answer:
D
Explanation:
It's D because past generations may not be heterozygous.
Describe 3 ways the land/terrain change as we move from Charlotte NC to the coastal plains of North Carolina
Answer:
Hilly towards flat.
Higher elevation toward lower elevation.
Clayey to sandy type of soil.
Explanation:
The land of Charlotte NC is hilly whereas coastal plains of North Carolina is flat. Charlotte NC is located at a high elevation while on the other hand, the coastal plains of North Carolina are located at the sea and at lower height. The soil type of Charlotte NC is clay and silt whereas the soil type of coastal plains of North Carolina is sandy due to the presence of sea.
Explain the significance of oxygen to animals?
A.Animals use oxygen to help circulate blood in the body.
B.Animals use oxygen to digest food.
C.Animals use oxygen to convert food to energy through photosynthesis.
D.Animals use oxygen to convert food to energy through respiration.
please answer asap its for a test
Answer:
a
Explanation:
The top 2-3 rows in an energy pyramid are always made of what kind of organisms?
Consumers
Carnivores or Omnivores
A Herbivore
Please help I got Consumers
Answer:
1 row- Primary producers (plants and phytoplankton)
2 row- Primary consumers (Herbivores)
3 & 4 row - Secondary consumers (Omnivores and Carnivores.)
Students were involved in an experiment to investigate whether playing music while they
took a test affected their scores.
control
independent variable
dependent varibale
test scores students = playing music during a test
Answer:What excalty the question?
Explanation:
1. What two reactants enter the mitochondrion?
2. Compare the reactions in mitochondria with glycolysis.
1. How does a cell obtain energy?
2. Under what conditions does fermentation occur in a cell?
3. If a cell could perform both cellular respiration and fermentation, which process would benefit the cell more?
Answer:
1.NADPH2 and FADH2 , and O2
Explanation:
NADPH2 and FADH2 get oxidized in the electro transport chain into NADP+ and FAD+ and water and oxygen and yield 3 ATP molecules and 2 ATP molecules per each molecule respectively
Following are the answers:
The two reactants that enter the mitochondrion are pyruvate, the end product of glycolysis, and oxygen.In the mitochondria, pyruvate and oxygen undergo a series of reactions called cellular respiration, which produces energy in the form of ATP. This process is more efficient than glycolysis, which only produces a small amount of ATP.A cell obtains energy through a variety of processes, including cellular respiration and fermentation.Fermentation occurs in a cell when there is a lack of oxygen, such as in anaerobic conditions.In general, cellular respiration is more efficient than fermentation in producing ATP, but fermentation is a useful process for cells to produce ATP when oxygen is not available.What is mitochondria?Mitochondria are organelles found in the cells of most eukaryotic organisms, including plants, animals, and fungi. They are often referred to as the "powerhouses" of the cell because they are responsible for producing the majority of the cell's supply of adenosine triphosphate (ATP), which is used as a source of chemical energy.
Mitochondria are membrane-bound structures that contain their own genetic material, separate from the cell's nucleus, and are responsible for their own replication. They have unique characteristics that allow them to produce energy through the process of cellular respiration, a series of reactions that convert the energy from food molecules, such as glucose, into ATP. This process is one of the most important biological processes in living organisms, as it allows cells to perform their functions and sustain life.
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Mitosis results in which of the following?
A. Two cells with different genes.
B. Two cells with identical genes.
C. Four cells with different genes.
D. Four cells with identical genes
Answer:
B
Explanation:
Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
Which of the following is a product of the Krebs cycle?
water
alcohol
carbon dioxide
glucose
Answer:
The answer is #3- Carbon Dioxide
Explanation:
The Krebs Cycle is a series of reactions that produces two carbon dioxide molecules, one GTP/ATP, and reduced forms of NADH and FADH2.
Answer:
carbon dioxide
Explanation:
https://quizlet.com/193523001/cellular-respiration-krebs-cycle-flash-cards/
A plant with the genotype ANL/anl, YGR/ygr, is bred with a plant with the genotype ANL/anl, ygr/ygr. About what percentage of the offspring plants will have both purple stems and yellow leaves? A. 50% B. 38% C. 25% D. 13%
Answer:
38%
Explanation:
Sorry im so late
Appraise the importance of the role plants play in the water cycle
Answer:
The correct answer is - holds water in their body plays a role as evapotranspiration.
Explanation:
Plants play important role in a hydrologic cycle or water cycle as they absorb water from the ground. They utilize this water for their cellular function and the rest of the water is released into the atmosphere.
The process is known as transpiration or in the hydrologic cycle evapotranspiration as water exits the plant body in the form of vapor or droplets. This helps the plant to cool its body and also helps to available for the atmosphere again in pure form. It
Both matter and energy cycle through systems in nature. How are aerobic and anaerobic respiration part of one or both of these cycling systems?
what is the expanded portion of a longitudinal wave
Answer:
well longitudinal waves are waves that move the medium parallel to the direction in which the waves travel
Explanation:
in waves, there is compression and rarefaction which is what makes up the distance of the wave. i hope this helps. if it doesn't, lmk and i'll fix it
Please, anyone that can help ...
Answer:
TAGCCTAACGGG
number 10 i didnt learn about it
Using the information below, what will happen to the cell as it reaches equilibrium?
Answer:
Even when equilibrium is reached, particles of a solution will continue to move across the membrane in both directions. However, because almost equal numbers of particles move in each direction, there is no further change in concentration
Explanation:
Answer: the cell will get smaller
In a breed of dog, the gene for black fur is dominant and the gene for brown fur is recessive. Two dogs with black fur are bred. One of the offspring has brown fur What is the most by explanation for the brown?
SC 912 L 16.1
The dog received a mutated gene
The dog only received one gene for fur color
The dog received two recessive genes for brown fur
The dog received one gene for brown fur and one gene for black fur
O
Answer:
the dog received 2 recessive genes for brown for
Explanation:
the only time a recessive trait will be shown physically is when the dog gets two recessive alleles
Answer: I believe its two recessive genes for brown fur
Explanation:
2. A scientist who studies communities studies
a. Interactions between different populations in an ecosystem
b. Interactions between members of the same species in an ecosystem
c. The adaptations of an individual organism
d. Interactions between the living and nonliving factors in an environment
Answer:
b
Explanation:
Which cell structure do nutrients pass through to enter a cell?
(A) cell membrane (B) cytoplasm (C) chloroplast (D) nucleus
1. On average, how do the proportions of typical and mutant bacteria change in the population over time?
Answer:
bacteria
Explanation:
Do you agree with Dr. Walker and his colleagues that the changes to Jordan Jones’s meal could not explain his improved performance? Why or why not?
Answer: I agree with Dr. Walker and his colleagues that the changes to Jordan Jones’s meal could not explain his improved performance.
Explanation: I agree with Dr. Walker and his colleagues that the changes to Jordan Jones’s meal could not explain his improved performance because, food can´t change anything except for your hungriness, and the more food you eat the more fat you get, and not slim.
why do you think are the reasons why only few seeds germinate
Answer:
The germination of a seed can eventually be affected by temperature, humidity and oxygen. Generally, the seeds remain viable longer at low temperatures, a humidity range of 3% to 20% and an environment with low partial pressure of oxygen. If some of these factors are not met, the seed can age or eventually germinate.
Explanation:
Seeds are the main reproductive organ of the vast majority of higher terrestrial and aquatic plants. They play a key role in the renewal, persistence and dispersal of plant populations, the regeneration of forests and ecological succession. In nature the seed is a staple food source for many animals. Seed germination often takes place on the surface of the soil, so the balance between the gain of soil moisture and its loss by transpiration to the atmosphere determines when the seed becomes saturated with moisture and begins to germinate.
The reasons why only few seeds germinate are as a result of some factors such as temperature, availability of water, depth of plant, presence of plant hormone (Gibberellin) in the seed. etc
Seed Germination is a process after seed dormancy where seeds sprout and develop into a new young plant. The reason why some seeds germinate and others do not are some of the following:
Temperature: For the germination of seed to occurs, seed needs to undergo a moderate amount of soil temperature. The cotyledon of the seedling gets destroyed when the seeds are being exposed to an extreme soil temperature. This is why most seed doesn't thrive in the deserts.
Availability of water: The soil in which seeds need to be planted must be moist and contain have a moderate amount of water holding capacity for the survival of the seed plant. The moderate amount of water holding capacity can be seen in humus soil.
Presence of plant hormone: The presence of Gibberellin in seeds helps the activation of the cotyledon to begin the germination process after the seed has absorbed water from the soil. In seeds where the enzymes are absent, such seeds do not germinate.
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you have two bean burritos with the same ingredients. One burrito weighs 0.3 pounds, while the other weighs 0.5 pounds. After microwaving each of them for one minute, which burrito will be hotter? Explain your answer.
Answer:
the one that weighs less
Explanation:
the one that weighs less has less of the amount of ingredients in it which takes less long to cook and heats up faster
Answer:
0.3 pounds
Explanation:
I say that because since there is less weight on one of them, it doesn’t have to be cooked as long, or else it may get cooked TOO uh since it weighs less, while the other one may be cooked perfectly since there is more to cook.
What is the difference between small, controlled lab experiments versus an ecosystem-scale experiment?
Answer: the number of variables
Explanation:
The difference between small, controlled lab experiments versus an ecosystem-scale experiment is the number of variables.
What is an experiment?A technique used in science to create a discovery, test a hypothesis or prove a known fact.
Lab experiments are done in the lab with a limited amount of variables as there is limited space available.
The ecosystem-scale experiment is performed on large scale and with many variables.
Thus, the difference is the number of variables.
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is Portland cement a mineral?
Answer:
no
Explanation:
Answer. no
Answer. no
explanation
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In the 1940s, American farmers lost 7% of their crops to pests. By the 1990s crop losses due to pests had risen to 13%. Select a reason for this increase.
A. Between the 1940s and 1990s more land was being developed for houses and city space. Less land was used to grow crops. The increased number of crops in smaller spaces led to increased numbers of pests.
B. The farmers were using reasonably effective pesticides in the 1940s. However, over time, more pests have evolved to become more resistant to the pesticides.
C. The pesticides decreased in quality due to America's expanding economy, allowing more pests to successfully feed on the crops.
D. Pests became used to the taste of pesticides and were able to detect when crops had been sprayed.
Answer:
b not for sure tho
Explanation:
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Answer b i think
Explanation:
What’s the key stages during expiration(breathing out) and during inspiration(breathing in)?
does anyone know im trying to answer this but im not sure
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
10 points
Answer:
The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air.
Explanation: