Answer: Active Transport
Explanation:
The movement of the particles across membrane needs energy. Energy is required in the condition where there is a movement of particles from a lower concentration to higher concentration.
It requires cellular energy for the movement of the particles. The larger molecules needs energy to move across concentration gradient.
In 1939, the use of DDT (a powerful synthetic chemical) as an insecticide was discovered. The United States adopted its widespread use, producing up to 100 million kilograms per year (200 million pounds per year). Twenty years later, severe side effects started to be reported as a result of DDT use. Which was an advantage of using DDT?
insect and pest populations decreased
birth defect rates increased
cancer rates increased
fertility rates decreased
Answer:
A. insect and pest populations decreased
Explanation:
Mount Tambora in Indonesia erupted and caused the "Year without a Summer." Over 100,000 people died from starvation because of the resulting _____. pyroclastic flow lahars climate change fires
The right option is; climate change
Mount Tambora in Indonesia erupted and caused the "Year without a Summer." Over 100,000 people died from starvation because of the resulting climate change.
Mount Tambora is situated on the island of Sumbawa in Indonesia. The destructive eruption of Mount Tambora occurred in 1815, and there was release of large amounts of ash, aerosols, pumice and other rocks into the atmosphere. This event influenced the climate and causes intense weather and harvest failures in many parts around the world. Over 100,000 people perished from famine and diseases, because crops could not grow in those regions.
This is the movement of particles from an area of high concentration to an area of low concentration along the concentration gradient?
____ is the energy storage compound found in animals and ___ is the energy storage compound of plants.
Glycogen and fats are used by animals to store energy, while plants use starches like amylose and amylopectin. Glycogen is found primarily in liver and muscle cells, and fats deliver a dense energy supply. Starch provides an accessible energy source for the less dynamic energy requirements of plants.
Glycogen is the energy storage compound found in animals, and starch is the energy storage compound of plants. Animals use glycogen and fats, including oils and triglycerides, as their primary sources of stored energy. Glycogen is a highly branched polymer of glucose and is especially prevalent in liver and muscle cells for quick energy release. Fats, including oils and triglycerides, offer animals a dense energy source due to the high energy content of fatty acids (R-COOH) present in the fat molecules.
On the other hand, plants use starch molecules, such as amylose and amylopectin, for energy storage. Starches are less complex than animal polysaccharides and are suitable for the less dynamic energy needs of plants. When plants need to use this stored energy, they hydrolyze the starch back into glucose units to fuel their metabolic processes.
Visually, what is the major difference between the seperation of chromosomes between anapahse I and anaphase II?
This pedigree chart tracks the inheritance of a recessive trait that is not sex-linked. Based on the information in the chart, which of the following statements is true about individuals 3 and 4?
At least one is heterozygous for the trait.
They are both homozygous dominant for the trait.
They are both heterozygous for the trait.
At least one is homozygous for the trait.
They are both heterozygous for the trait.
They both express the dominant trait, but one of the offspring is recessive. The only option for this is that both are heterozygous and have two genes: recessive and dominant.
You can see this when you draw a Punnett square.
Subject 3 will be Dd where D is the dominant trait, and d is the recessive trait. Subject 4 will be Dd.
Now cross them, and you'll found 25% chances of having a recessive offspring.
You can't have only one of them heterozygous because, when you draw the Punnett square, you'll have 50% dominant and 50% dominant heterozygous.
The same happened with only one homozygous.
And, if they were both homozygous dominant you only have one trail, no two, and again you can't have a recessive offspring.
The diagram shows that currently about 100 gigatons/year of carbon are moved from the atmosphere to vegetation on land. Which process could decrease this number?
ncdc.noaa.gov
reducing the amount of urban area in the world
cutting down large areas of forests
warming up the oceans
increasing respiration rates
the answer is b cutting down large areas of forest
Thale cress is a plant that is genetically engineered with genes that break down toxic materials. Which type of organism is described?
A. recombinant
B. transgenic
C. transverse
D. restriction
Answer:
It is B.
Explanation:
I just took the test
Arteries carry oxygen-rich blood to capillaries. True or False? Arteries carry oxygen-rich blood to capillaries. - is true. ***The arteries deliver the oxygen-rich blood to the capillaries where the actual exchange of oxygen and carbon dioxide occurs. [ The capillaries then deliver the waste-rich blood to the veins for transport back to the lungs and heart. ]
The given statement is true.
The arteries are the blood vessels, which carry the oxygenated blood away from the heart. The arteries carry the oxygenated blood to the capillaries. the capillaries are highly branched thin walled blood vessels.
In the capillaries, the actual exchange of the gases between the blood and the body tissues takes place through the diffusion process. In the process of gaseous exchange, the capillaries become rich in carbon dioxide and other wastes, which they pass down to the veins and the veins carry the blood to heart.
Arteries carry oxygenated blood is a true statement.
Further Explanation:
Heart is a major central organ of the circulatory system. This helps the organism to use up the oxygen taken by the process of respiration by channeling to different organs. This process is undertaken by the help of blood vessels. Heart pumps the blood to different organs by means of blood vessels. Arteries are a type of blood vessel. The blood vessel is generally divided into three types;
a. Arteries
b. Veins
c. Capillaries
They vary in shape, size, structure and function. The blood vessel which is generally responsible to carry blood away from the heart to the body organs is artery. Artery carry oxygenated blood. This blood reaches the capillaries and the process of diffusion occurs. Diffusion is the process that brings about the gaseous exchange in the body. The waste material and other not required components are filtered and is excreted out of the body.
Thus, artery carry oxygenated blood away from the heart.
Learn more:
1. Learn more about proteins https://brainly.com/question/1420458
2. Learn more about DNA https://brainly.com/question/2416343
3. Learn more about replication https://brainly.com/question/1600165
Answer Details:
Grade: High School
Subject: Biology
Topic: Human physiology
Keywords:
Heart, artery, veins, capillaries, oxygenated blood, deoxygenated blood, blood, gaseous exchange, excretion, pumping.
Which of the following represents change to an ecosystem brought about by abiotic factors?
a.
the decrease in plant populations due to a decrease in the available water supply
b.
the increase in a predator population due to the increase in prey population
c.
the decrease in plant species due to herd grazing
d.
the extinction of a plant species due to bacterial infection
The answer is A. Abiotic factors are the non-living parts of a species’ habitat. Examplses of abiotic factors are water, moiuntains, wind, rain, temperatuatres, and etcetera. Abiotic factors are significant in an ecosystem because they affect the biotic factors in that they affect their growth and development of organisms in the ecosystem and also their reproduction.
Answer: a / decrease in plant population…….
Explanation: edge 2024
What would happen if all the energy in glucose were released in just one step instead of gradually as it is in cellular respiration? How is the gradual process of cellular respiration advantageous to the cell?
In the case when all the glucose energy should be released so the energy should be losted. The explanation regarding the gradual process should be explained below.
Energy glucose:In the case when all the glucose energy should be released so the energy should be lost in terms of light and heat. Since this harms or destroyed the cell. Moreover, the process of cellular respiration should permit the cell for controlling the energy realization into the ATP package form that should be used in an efficient manner with respect to the cell activities.
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physical limiting factors of an ecosystem are such things as?
Through the process of differentiation bone cells are formed and they cannot return to stem cells. Why then can a broken bone heal?
A) The process of mitosis allows the old bone cells to divide and produce new bone cells.
B) The process of meiosis allows for the reproduction of bone cells
C) The process of differentiation occurs again and produces new bone cells.
D) The process of reproduction happens and produces new bone cells.
Answer:
Option (A).
Explanation:
Mitosis can be defined as a type of cell division that produces two identical daughter cells from a single parent cell. Mitosis is responsible for growth and repairing of old or damaged cells.
When bone breaks, mitosis occurs in pre-existing bone cells, which leads to formation of new bone cells to heal broken bone.
Thus, the correct answer is option (A).
URGENT!!!!!!!!!!!!!!!!!
Why might some kinds of living things undergo sexual reproduction at times when conditions in their environment become less favorable?
The ANSWER is:
Assuming ur doing SOS:
In organisms that most often reproduce asexually, the product of sexual reproduction is often more resistant to unfavorable environmental conditions than the individual of the species produced by mitosis. Some kinds of protists such as protozoans and algae do not usually reproduce sexually unless growing conditions have become unfavorable. Many plants do not produce seeds until the approach of winter or a dry period of the year.
Sexual reproduction is defined as the fusion of male and female gametes to give rise to the organism. Sexual reproduction leads to diversity and variation. However, some asexually reproducing organisms undergo sexual reproduction.
The organisms reproducing asexually switch to sexual reproduction as:
1. Algae and fungi reproduce asexually, a mode of reproduction in which the organisms are genetically similar to the parent.
2. The algae and fungi switch to a sexual mode of reproduction because of the adverse conditions of the environment.
3. Sexual reproduction leads to diversity and variation that help the offspring to be better suited and sustained to the environment, having higher chances of survival.
Thus, during adverse conditions, the organisms like fungi shift to the sexual mode for the better survival of their offspring.
To know more about sexual reproductions, refer to the following link:
https://brainly.com/question/7464705
Which of the primary tissue types detects and responds to changes in the environment in order to maintain homeostasis?
A) dense irregular
B) connective
C) epithelial
D) muscular
E) nervous
what is the role of calcium in the cross bridge cycle?
After Ca2+ is released from the sarcoplasmic reticulum, it binds with Troponin C, alters its shape and removes the tropomyosin from the binding site. Then, the myosin head binds to the exposed active sites of actin to form cross-bridges.
Nuts and grains are _____. vegetables fruits flowers seeds
nuts ans grains are SEEDS. vegetables fruits flowers seeds
D.Seeds!
what is the type of subunits that form amylase
Which of the following is not considered to be a rock?
coal
sandstone
pumice
lava
Imagine you are on a dinosaur fossil hunt with a famous paleontologist. Design a procedure for determining the relative and absolute ages of the fossils you find.
some organisms preform photosynthesis to produce energy.other organism cannot do photosynthsis .what can they do in order generate energy?
The measure of angle KAH is ____ degrees, to the nearest degree.
How would the second row of values in the plant experiment most likely compare to the second row of values in the original experiment?
To which substance does ferredoxin transfer an electron?
Which substance is most likely represented by Y?
1. What can muscle cells do that other cells cannot?
2. Why are skeletal and cardiac muscles striated?
Muscle cells can contract, a function unique to them, with skeletal muscles enabling bone movement and cardiac muscles pumping blood. Striations in skeletal and cardiac muscles arise from the alignment of sarcomeres, giving them a banded appearance. Smooth muscles, in contrast, are not striated and are located in the GI tract, among other organs.
Explanation:Differences Between Types of Muscle Tissue
Muscle cells are specialized to contract and produce movement, a function not found in other cells. Muscle cells, specifically skeletal muscles, are responsible for moving bones, while cardiac muscles contract to pump blood within the heart. Unlike cardiac and skeletal muscle, smooth muscle cells, which are found in the gastrointestinal tract among other locations, are not striated due to their arrangement in sheets rather than bundles.
Striated muscles, such as skeletal and cardiac muscles, are characterized by their banded appearance, which is due to the sarcomere structure within the muscle fibers. While both types of striated muscles contain sarcomeres, which are the functional units of muscle contractions, their arrangement is slightly different in each, contributing to their unique appearances and functions.
The function of the skeletal muscle is to permit voluntary movement, as exemplified by the action of the biceps muscle when lifting an object. In contrast, cardiac muscle function is involuntary and specifically adapted to pump blood through the heart chambers and throughout the body.
Which of the following is not included in a typical age structure diagram A. The population sex ratio B. The relative numbers of people in different age groups C. The populations historical growth D. The proportions of reproductive age individuals
The following not included in a typical age structure diagram is C. The populations historical growth
Explanation:A typical age structure diagram provides information about the distribution of a population across different age groups, which helps in understanding population dynamics and predicting population growth. The diagram includes the population sex ratio, which shows the proportion of males to females in each age group.
It also includes the relative numbers of people in different age groups, which is represented by the shape of the diagram (pyramidal, conical, etc.). Additionally, the age structure diagram provides information about the proportions of reproductive age individuals, as this is crucial for understanding fertility rates and population growth potential.
However, the population's historical growth is not included in a typical age structure diagram. Age structure diagrams do not provide information about the past growth rates or precise historical population size. They focus on the current distribution of the population across different age groups and provide insights into the potential future growth based on the age composition of the population. The correct answer is C. The populations historical growth
What leaves the Calvin cycle to build 6-carbon sugar molecules?
a. high-energy 3-carbon molecules
b. energized electrons from the electron transport system
c. high-energy ATP and NADPH from the light-dependent reactions
d. chlorophyll a and chlorophyll b along with other pigments such as carotenoids
You have 46 chromosomes in each of your somatic cells. If you cut your arm, how many chromosomes would be in each newly formed skin cell?
Newly formed skin cells, like all human somatic cells, would have 46 chromosomes.
The chromosomes are in each newly formed skin cell after an injury, such as a cut on the arm. In humans, somatic cells, which include skin cells, are generally diploid, meaning they contain a full set of chromosomes - one set from each parent, totalling 46 chromosomes. When your skin begins to heal after a cut and new skin cells are formed, these cells undergo a process called mitosis, which is how somatic cells divide to generate new cells identical to the original one. Therefore, each newly formed skin cell would also have 46 chromosomes.
what is the important outcome of meiosis 2
The key outcome of meiosis II is the production of four unique haploid cells, which are important for genetic diversity in sexual reproduction.
Explanation:The important outcome of meiosis II is the separation of sister chromatids into individual chromosomes, resulting in the formation of four genetically unique haploid cells. During meiosis II, two haploid cells produced from meiosis I undergo cell division without chromosome replication in interkinesis. The division in meiosis II follows steps similar to mitosis but it's critical in ensuring genetic diversity through the creation of unique gametes for sexual reproduction.