Answer:
hiii
Explanation:
1.scientist refer to a biological community and the abiotic parts of the environment that affects the community as _______?
A. Biome
B. Ecosystem
C. Population
D. Community
True or false the main source of energy and water cycle is gravity
Answer:
False please mark me brainlest.
Explanation:
1. How does the human body respond to exercise?
Answer:
the heart pumps more blood and sends it to the muscles. to create more blood more oxygen is used and you start to breathe harder. if you work out hard then you might get some lactic acid build-up.
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Due today, please help
The nitrogen bases will only bond with one specific nitrogen base such as A - T and G - C. This is known as:
Complimentary Base Pairing
Which statement is true about gold and helium?
O A. They both occur as a gas at room temperature.
B. They are both made of subatomic particles.
c. They are both used in balloons.
D. One of made of protons and the other of only electrons.
Answer:
The answer is B
Explanation:
The cell part that helps with cell division is the ________
Answer:
centrioles
Explanation:
Every animal-like cell has two small organelles called centrioles. They are there to help the cell when it comes time to divide. They are put to work in both the process of mitosis and the process of meiosis.
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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Does anyone know how to do this????!
Answer:
Check from the internet
Which activity occurs in the process of photosynthesis?
A) Chemical energy from organic molecules is
converted into light energy.
B) Organic molecules are obtained from the
environment.
C) Organic molecules are converted into light energy.
D) Light energy is converted into the chemical energy.
Answer:
A) Chemical energy from organic molecules is
converted into light energy.
Explanation:
Plants can take energy from the sun and use that energy to synthesize carbohydrates. The process by which plants convert solar energy into chemical energy is called photosynthesis. During photosynthesis, carbon dioxide and water are converted into carbohydrates and molecular oxygen.
Answer: D
Explanation: because
identify and explain three environmental impacts of current agricultural methods
Explanation:
It is profit making practice but it causes increased level of pathogens.
It has increased the level of chemicals in our land and water.
It has increased levels of greenhouse gases in air.
Explain how autotrophs need both cellular respiration and photosynthesis
Answer:
They get energy from food. Autotrophs make their own food through the process of photosynthesis, in which light energy from the sun is changed to chemical energy that is stored in glucose. And as for cellular respiration, all organisms use it to break down glucose, release its energy, and make ATP.
Explanation:
_____________
Which is held constant when a gas obeys Boyle's law?
A. motion
B. pressure
C. temperature
D. volume
Answer:
B
Explanation:
ganyan rin sagot ko sa module ko
When a gas obeys Boyle's law, the temperature is held constant. The correct option is C.
What is Boyle's law?Boyle's law is given by Charles Boyle. It is a gas law that states the pressure decrease with the increase in the volume and the temperature remain constant. In other words, the pressure exerted on gas is inversely proportional to the volume of the gas.
The law shows the relationship between pressure and volume, with the temperature remaining constant. There are three gas laws which are given by different scientists. These laws show the relationship between two variables and the third remains constant. These variables are temperature, volume, and pressure.
Thus, the correct option is C. temperature regarding the gas obeys Boyle's law, and it remains constant.
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The incidence of cystic fibrosis, a recessive genetic disorder in the Caucasian population of United States, is 1 in every 2,500 individuals. Find the number of heterozygous carriers. (p + q = 1, p2 + 2pq + q2 = 1)
Answer:
The no. of heterozygous carriers = 0.0392
Explanation:
From the given information:
The incidence of this recessive disorder i.e. q² = 1/2500
q² = 0.0004
q = 0.02
From Hardy Weinberg's Equilibrium.
p + q = 1; &
p² + 2pq + q² = 1
∴
p + 0.02 = 1
p = 1 - 0.02
p = 0.98
So, the numbers of heterozygous carrier 2pq is:
= 2 × 0.98 × 0.02
= 0.0392
which layer of the earth is about 85% of iron
Answer:
the mantle
Explanation:
2885 kilometers thick and is the middle layer of the Earth
the earth's mantle
the mantle is made up of several minerals such as iron, magnesium, silica and oxygen.
PLEASE HELP AT THIS POINT IM BEGGING YOU
9. Mendel’s research led to several conclusions about how traits are passed through generations. Choose TWO of the conclusions from the bullet list below and provide evidence from THIS activity that supports this conclusion. (6 points)
Different forms of a gene account for variations in the inherited traits
An organism inherits two genes for each trait, one from each parent.
Some alleles are dominant over others for a given trait.
The two genes of a given trait segregate during gamete production.
#1)
Which conclusion from the list above did you pick? _________________________________________________
How does it apply to the monsters activity?
#2)
Which conclusion from the list above did you pick? _________________________________________________
How does it apply to the monsters activity?
Answer: Mendel's research lead to several conclusions about the traits and its passing through generations. The two of the conclusion are different forms of a gene account for variation in the inherited traits and some alleles are dominant over others for a given trait.
Explanation
George Mendel was a famous biologist. His research was on genes and traits. His experiment shows how genes gets transferred from parents to offspring. Also he stated about the behavior and dominance and recessive nature of that alleles.
He also gives the possibility of dominance of a trait over other trait. The different forms of gene are responsible for various types of inherited traits in an organism.
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According to the reading, the sun is NOT a typical star.
O True
O False
A cactus with the genotype Kkww is crossed with a cactus with the genotype KKWw. Which of the following genotypes will be shared by 25% of the offspring?
A. KKWW
B. kkWw
C. KKww
D. KkWW
Answer: C
Explanation: Think of it this way, which ever has the most is what answer would be. So they come across 3 capitals with K its gonna be KK not kk.
Hope this helps
The genotype is defined as the genetic makeup of an organism, or the set of alleles. The cross between Kkww and KKWw will result in 25% of the progeny having genotype KKww.
The correct option is:
Option C. KKww
Find the attachment for the Punnett square, given below.
The cross between Kkww and KKWw will result in the gametes as:
Kkww - Kw, Kw, kw, kwKKWw - KW, Kw, Kw, kwThe progeny having genotype as KKww will be 4 or 25%.
Therefore, Option C is correct.
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Body cells have
____ the number of chromosomes as sex cells.
a: 4times
b: one half
c: one fourth
d: twice
Answer:
Body cells have twice the number
How are viruses different from bacteria?
Answer:
A.
Explanation:
True or False.
The lymphatic and immune systems contain the lymphatic vessels and ducts, lymph nodes, bone marrow, and spleen.
Answer:
True
Explanation:
I also like your profile picture
The lymphatic system consists of lymphatic vessels and ducts, lymph nodes, and spleen. The immune systems consist of bone marrow. Hence, statement true.
What is immune system?The system that helps to fight infections and diseases with the help complex system of tissues, cells, organs is called as immune system.
In humans, immunity is of 3 types including:
adaptive immunity- natural immunityinnate immunity- develops throughout lifepassive immunity- borrowed from any source that doesn't last long.Bone marrow and the thymus are primary parts of the immune system. Bone marrow play significant role in production of blood cells including B and T lymphocytes. In also includes organs of lymph system such as lymph node, thymus, spleen, tonsils, lymph node, and lymph vessels.
Therefore, The statement above is true.
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The sequence of DNA below is part of a gene. How many amino acids are coded for by this segment?
5 ATTAGTCCGTAC 3
A. 2
B. 3
C. 4
D. 5
Answer:
b
Explanation:
What size molecules can pass through a cell membrane by a process called passive transport?
Answer:
diffusion and osmosis
Explanation:
lipid_ soluble substance
through lipid baleyer
through protein channel
Transported proteins carry small substances like water, amino acids, and charged ions. One to fifteen angstroms is the range in molecule size that can pass through the membrane. The easier it is for a molecule to move across the cell membrane, the smaller it is.
What is cell membrane ?All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the cell from the external environment. A semipermeable lipid bilayer makes up the cell membrane. The movement of materials into and out of the cell is controlled by the cell membrane.
Small molecules or ions can traverse the cell membrane passively without the cell providing any energy. The three basic types of passive transport are osmosis, assisted diffusion, and diffusion.
Gases like oxygen and carbon dioxide, as well as small hydrophobic compounds, quickly traverse membranes. Water and ethanol are examples of small polar molecules that can move across membranes, though more slowly.
Thus, The easier it is for a molecule to move across the cell membrane, the smaller it is.
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How many different ways can the 23 homologous pairs in a human germ cell arrange themselves during Metaphase I?
Answer:
eight million
Explanation:
Eight million different ways can the 23 homologous pairs in a human germ cell.
What is Homologous pairs?One of a pair of chromosomes with the same gene sequence, locations, chromosomal length, and centromere placement is referred to as a homologous chromosome. One paternal and one maternal chromosome make up a homologous pair.
A somatic cell of a human has a total of 46 chromosomes in its nucleus. The father inherits half of them (22 autosomes Plus X or Y chromosome), while the mother inherits the other half (22 autosomes + X chromosome).
A female typically has 23 homologous chromosomes, compared to a male's 22. This is due to the fact that men' X and Y sex chromosomes are not identical. During meiosis, homologous chromosomal pairing is crucial.
Therefore, Eight million different ways can the 23 homologous pairs in a human germ cell.
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Plant and animal cells both have cell membranes and nuclear membranes. However, plant cells have a structure that animal cells do not, known as a: ____
Answer:
cell wall and chloroplast
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:
Which of the following areas of science would
allow someone to obtain a job for NASA?
A. Physical Science
B. Life Science
C. Social Science
D. Medical Science
What is it called when DNA is not bunched together
Osmosis is important to cells because _______ *
a. cells contain fluids that are mostly water
b. cells are filled with fluids that are mostly sugar
c. cells need to be kept cool
d. cells need food
In the experiment "What Effect Does Vinegar Have on Plant Growth?" some plants were given only water, some were given only vinegar, and the others were given various mixtures of water and vinegar. Which of the following groups is the control group in the experiment?
50% water and 50% vinager
100% water
100% vinager
or 25% vinager and 75% water
Answer:
50% water and 50% vinegar
Explanation:
Where do the mineral resources in which society depends on come from
Answer:Without minerals we would not have electricity, food, or shelter. Minerals make today's technology-based life possible, but that's something many of us take for granted.
Explanation:Soil, rocks, and minerals provide essential metals and other materials for agriculture, manufacturing, and building. 7.7. Earth scientists and engineers develop new technologies to extract resources while reducing the pollution, waste, and ecosystem degradation caused by extraction.