define hydrogen bonds

Answers

Answer 1
Define hydrogen bonds( It a weak bond between two molecules) one molecules and goes to electronegative to another.

Related Questions

Maltose is hydrolyzed by the enzyme maltase into two molecules of glucose. Maltose is classified as a ___.

Answers

Answer:

Disaccharide

Explanation:

Monosaccharides include

~Glucose

~Galactose

~Fructose

Disaccharides include

~Maltose

~Sucrose

~Lactose

Polysaccharides include

~Cellulose. ~Chitin

~Glycogen

~Starch

Two pink-flowering plants are crossed. The offspring percentages are 25% red, 25% white and 50% pink. What would the parent's genotypes be?

Answers

Answer:

The options are

A. both homzygous dominant

B. both homzygous recessive

C. both heterozygous

D. one homzygous dominant, one homzygous recessive

The answer is C. both heterozygous

Since it’s in the ratio of 1:2:1 the genotype will be Rr and Rr.

a hurricane comes through and causes beach erosion. which choice best represents the systems that are affected?
A. hydrosphere, atmosphere, geosphere
B.atmosphere, cryosphere, geosphere
C.hydrosphere, lithosphere, biosphere

Answers

C hydrosphere, lithosphere, biosphere

Meiosis I involves separation of homologous chromosomes but meiosis II involves separation of chromtids.

Answers

Answer:

Meiosis I: in meiosis I there is pair of chromosomes called homologous chromosomes which are to be seperated so one of that two chromosomes right pole of the cell and the second one goes to the left pole so each pole gets a chromosome with two sister chromatids.

Meiosis II: While in meiosis II homologous pair is not formed and single array of chromosomes are arranged to form metaphase plate as formed in Mitosis so, when the spindle fibres contracts each sister chromatids went to their respective poles.

Explanation:

                 

Is It possible for two parents with a round jaw to have a child with a square jaw? Why or Why not

Answers

Yeah it's possible. Even though both parents have round jaws... that may be the result of a dominant trait overpowering the recessive trait. As long as both parents have the recessive gene (in other words they're heterozygous traits) then there is a possibility for a child to be born with a square jaw.

Mad scientists Ms. Jones & Ms. Peek studied how a catalyst affects the rate of a chemical reaction. The data table below shows their results

Amount of Catalyst (mg)

Reaction Time (s)

10

60.3

20

47.7

30

31.8

40

22.6

Which statement correctly describes the pattern in the data (AKS 1a1)(DOK 1)

Question 25 options:

a. The catalyst did not affect the rate of the reaction.


b. The more catalyst added, the slower the rate of reaction


c. The more catalyst added, the faster the rate of the reaction


d. If 50 mg of catalyst were added, the reaction would take less than 22.6 seconds

Answers

Answer:

b. Cu cât se adaugă mai mult catalizator, cu atât viteza de reacție este mai  RMEA

Explanation:

When does DNA replication happen and why?

Answers

Answer:

DNA replication needs to occur because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions

Which statement BEST describes the relationship between mass and weight?
A. As the value for mass increases, the weight decreases.
B. The mass will always be greater than the weight.
C. Weight is always needed to calculate mass.
D. Weight is dependent on mass and gravity.

Answers

B the mass will always be greater than the weight

What are 5 factors that decrease populations (explain each or tell how that factor causes a decrease in a population).

Answers

Answer:

Morality and Emigration

Explanation:

Mortality and emigration decrease the population. Thus, the size of any population is the result of the relationships among these rates. Natality, mortality, immigration, and emigration rates apply to every population, including the human population. The sum of these rates makes up the growth rate of a population.

1) Agricultural Change:
agricultural changes have been massive over the past 400 years. Many of these agricultural changes even at a low level free up workers from the farms. This allows industrialisation which needs lots of workers and tends to promote high birth rates. The more regular supply of food from advanced farming also promotes birth rates, as people are sure they can feed their children, and reduces famine deaths.

2) Education:
Education plays a vital role in determining the levels of both birth and death rates in a country and hence the level of population growth. As education levels increase people tend to have fewer children so that they can focus their resources in improving the life chances of those few children.

3) Emancipation of women:
In many rich countries women have become over time free to work when they want within their life. This is not the case in all countries in the world where many women are stuck in gender specific unpaid work such as maintaining a household and subsistence farming plots. Women are much more likely now to go to university and work for a few years before having their first child. This can result in fewer children being born per woman as fertility declines with age for women.

4) Urbanization:
It has a significant impact upon population growth because it can impact upon the birth and death rates of a country. As a country becomes increasingly urbanised the birth rate tends to rise and death rates tend to fall.

5) Death rates:
Often death rates are reduced before a slowdown in birth rates, causing a boom in the population size at a certain point in a country’s economic development. Death rates fall and life expectancy increased.

i hope i could help u!! xx

Which body system assists the respiratory system in the exchange of chemicals within the body's cells?
O A. circulatory
B. reproductive
O C. excretory
D. digestive

Answers

A. Circulatory
Explanation
.

ASAP The levels of water and salt in the blood are controlled by the ________, which is controlled by the ________.

Answers

Answer:

the hormone that regulates the salt and water levels is aldosterone found on the adrenal gland that sits above the kidney

Explanation:

Aldosterone, a hormone found in the adrenal gland above the kidney, regulates salt and water levels which are usually regulated by the renin-angiotensin system.

What is aldosterone?

Adrenal glands secrete aldosterone, a steroid hormone. Its primary function is to regulate salt and water in the body, thereby influencing blood pressure.

It is actually regulated by a system namely the renin-angiotensin system.

Thus, aldosterone, a hormone found in the adrenal gland above the kidney, regulates salt and water levels which are usually regulated by the renin-angiotensin system.

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The table below shows the depths at which an index fossil and three other fossils were found.


Fossil Data
Fossil Depth (meters)
A 320
B 380
C 500
Index fossil 380

Which statement is correct?
The index fossil is the oldest fossil.
The index fossil is the youngest fossil.
Fossil A is the same age as the index fossil.
Fossil B is the same age as the index fossil.

Answers

Answer:

Fossil B is the same age as the index fossil.

Explanation:

TOO LATE BUSTER

Answer:

B

Explanation:

Although flowers have a common ancestor, they vary quite differently due to the environment and their specific pollinators. This is an example of

Answers

Answer:

Divergent evolution.

Explanation:

Divergent evolution can be defined as the process in which more than one group of the same species (from the same ancestors) evolve and possesses (accumulates) various features or traits such as behavior or bodily structures, thus, resulting in the formation of new species of the living organisms.

Although flowers have a common ancestor, they vary quite differently due to the environment and their specific pollinators. This is an example of divergent evolution.

Helppppp will mark brainliest

Answers

Answer:

the mixture is a COLLOID and can best be separated by EVAPORATION

not 100% sure the second part is correct... hope it is and i hope i helped!   :)

Which of the following is a result of reduced levels of red blood cells and elevated levels of white blood cells in the body?

Efficiency of oxygen transport is reduced due to an infection.
Efficiency of nutrient transport is reduced due to an infection.
Efficiency of oxygen transport is reduced, but not due to an infection.
Efficiency of nutrient transport is reduced, but not due to an infection.

Answers

Answer:

the white cell is the air in youre body and the red cell are the blood in youre body

Explanation:

Answer:

Efficiency of oxygen transport is reduced due to an infection.

Explanation: got it right on flvs

the prosses of a cell dividing into 2 new daughter cells is called?​

Answers

it’s called mitosis

Hydrotropism
Stimulus = ___________ Response = __________

A sunlight, roots grow downwards
B water, roots grow towards source of water
C plant leaves move away from touch, plant stem grows towards light
D Plant stem grows upward, plant roots grow downward

Answers

Answer:

a,d

Explanation:

Answer:

c

Explanation:

plant leaves move away from touch,plant stem grows towards light

What are some helpful and harmful examples of dna mutations

Answers

Answer:

Examples of helpful mutations embrace HIV resistance, milk sugar tolerance, and colored vision.Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes.

BIOLOGY HELP PLS!!!!!!! I DONT KNOW WHAT THIS IS XD

Answers

The first question is the first option (4 haploid cells; 2 diploid cells).
The second question is the first option also (nitrogen).
If wrong I’m sorry but good luck! Have an amazing day!

what is biotic factors

Answers

Answer:

Biotic components, or biotic factors, can be described as any living component that affects another organism or shapes the ecosystem. This includes both animals that consume other organisms within their ecosystem, and the organism that is being consumed.

Hope it will help you.......

Animals, birds, plants, fungi, and other other organisms are all biotic factors.

Pic is below

I really need to know this pls help me

Answers

well are you gonna show us the question
What is the question

Compare the environmental impact of using solar, geothermal, and nuclear energy.

Answers

Answer:

Both the sun and geothermal  are  considered renewable energy sources. ... nuclear energy produces nuclear waste, but solar and geothermal energy does not produce large amounts of waste.

Explanation:

The nuclear energy has more environmental impact as compare to solar energy and geothermal energy. The nuclear energy produces nuclear waste where solar energy and geothermal energy is renewable source of energy.

What type of nuclear wastes produce through nuclear energy?

The nuclear energy produces radioactive wastes like uranium mill tailings, spent reactor fuel etc. These radioactive wastes are dangerous for human heath for thousands of year.

To learn more about solar energy, geothermal energy and nuclear energy here.

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By contrast, during Meiosis, what do daughter cells receive?

A. In meiosis, the daughter cells help increase genetic variation from one generation to the next.

B. Each chromosome will divide to produce two diploid daughter cells, each of which has the same number of chromosomes

C. Homologous chromosomes are separated, and each daughter cell receives 2 diploid sets of chromosomes.

D. Homologous chromosomes are separated, and each daughter cell receives only a haploid set of chromosomes

Answers

Answer:I’m on this question right now, do yk the answer

Explanation:

In meiosis,  Each chromosome will divide to produce two diploid daughter cells, each of which has the same number of chromosomes.

What do you mean by meiosis?

Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells.

Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.

Therefore the purpose of meiosis is to produce gametes, the sperm and eggs, with half of the genetic complement of the parent cells.

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A cell is placed in a solution with a HIGHER solute concentration (a
hypertonic solution) than the inside of the cell. What will happen to the
cell?

Answers

Answer:

the cell will shrink due to the concentration gradient. Areas of low to areas of higher concentration.

Explanation:

Question 1(Multiple Choice Worth 4 points) (01.03 LC) Organic molecules are sometimes found within meteorites that crash into Earth. Which meteorite condition in space is similar to what most likely was present in Earth's early atmosphere? Abundance of oxygen Very cold temperatures Presence of inorganic molecules Low levels of ultraviolet radiation

Answers

Answer:

Presence of inorganic molecules

Explanation:

Earth's primitive atmosphere contained a mix of different inorganic compounds (gases) including, among others, water vapor (H2O), carbon dioxide (CO2), ammonia (NH3), methane (CH4), etc. It has been proposed that these inorganic molecules would generate the conditions needed to form a "primordial soup" of organic molecules (i.e., RNA nucleotides, amino acids, etc). Subsequently, this soup would accumulate in water bodies of the primitive Earth due to endogenous abiotic syntheses and the delivery caused by comet/meteorite collisions.

Answer:

C. Presence of inorganic molecules

Explanation: i took the test and got it correct :)

What question did Charles Darwin attempt to answer?
A. Where is genetic material stored in the cell?
B. How many offspring can an organism have?
C. Why do different organisms live in different places?
D. Are an offspring's traits similar to those of its parents?

Answers

Answer:

The correct answer is C. Why do organisms in different places have different traits?

Explanation:

Charles Darwin was a naturalist, biologist, and geologist from England and known for his theory of evolution. According to the theory, he observed different types of species of organisms such as birds, plants and fossils all over the world and found similarities in the characteristics.

He suggested that there were variations in species on the basis of specific geological locations. On the basis of these observations, he proposed that all species of organisms are come from the same ancestor but shows the differences due to the response to the condition of their habitat or location

Answer: C <3

Explanation:

How fast can you answer correct..? How fast can i give you brainliest. Explain Your answer:D//

Answers

Chemical, off course.

And maybe Kinetic because we are doing movements.

Answer:

Chemical is one

Explanation:

Because "Chemical energy is energy stored in the bonds of chemical compounds, like atoms and molecules." There is chemical energy in the food we eat.

Gestational diabetes occurs when a pregnant woman has high levels of blood sugar. Cells in the pancreas usually keep blood sugar levels normal, but hormones produced during pregnancy deactivate the cells. After pregnancy, hormone levels return to normal, and so do the pancreas cells. Is this an example of DNA or the environment controlling gene expression? Explain your answer

Answers

Answer:

environment controlling gene expression  

Explanation:

Gestational diabetes generally occurs in pregnant women. The sugar level in the bloodstream becomes little high than the normal range during pregnancy. But the glucose level returns to normal after child birth.

The pancreas secrets insulin which helps to lower the blood sugar level in the body. But during pregnancy, the placenta releases some of the hormones which dilutes the effect of insulin. This is known as insulin resistance. So now the pancreas secretes more of insulin to overcome this insulin resistance for the body. Now if a woman during pregnancy does secrete more insulin, the glucose level increases in the body and the woman develops gestational diabetes.

Gestational diabetes greatly depends upon obesity and the ethnicity of the women, but a definite genetic link has not been identified.

This it is a result of the environment control gene expression.

What is most
important for the formation of bone? *
A)Vitamins
B)Proteins
C)Minerals
D)Carbohydrates

Answers

Answer:

_______vitamins_______

All animals must be able to take in information and react to their environmental conditions. Describe the organs and organ systems in humans that work together to collect information about the external environment.

Answers

Answer:

Nervous system

Explanation:

The nervous system in humans work together to collect information about the external environment because they consist of the brain, spinal cords and neurons. They collect information from external environment and those information travels through neurons from sense organs like eyes, ears, skin e.t.c as a form of electrical impulses. When they get to the end of the neuron, a chemical called neurotransmitters are released which travels across the cells and send it to the brain, the brain then process it and interprete the signals and respond to it as stimulus.

All animals must be able to take in information and react to their environmental conditions through the Nervous system.

What are the 4 main functions of the nervous system?

Control of the body's internal environment to maintain 'homeostasis'.Programming of spinal cord reflexes.  Memory and learning.Voluntary control of movement.

Thus, the nervous system is the answer.

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