Which of the following statements are true for all
biomolecules?
Select three correct answers.
They have nitrogen elements.
They have covalent bonds.
They have a carbon backbone.
They have hydrogen elements

Answer:

Since the beginning of life of the first multicellular organisms, the preservation of a physiologic milieu for every cell in the organism has been a critical requirement. A particular range of osmolality of the body fluids is essential for the maintenance of cell volume. In humans the stability of electrolyte concentrations and their resulting osmolality in the body fluids is the consequence of complex interactions between cell membrane functions, hormonal control, thirst, and controlled kidney excretion of fluid and solutes. Knowledge of these mechanisms, of the biochemical principles of osmolality, and of the relevant situations occurring in disease is of importance to every physician. This comprehensive review summarizes the major facts on osmolality, its relation to electrolytes and other solutes, and its relevance in physiology and in disease states with a focus on dialysis-related considerations.

Answer:

C. Point B

Explanation:  

The exposed curve represents a logistic growth model. Population growth depends on density. Natality and mortality depend on the population size, meaning that there is no independence between population growth and population density.

When a population grows in a limited space, density rises gradually and eventually affects the multiplication rate. The population per capita growth rate decreases as population size increases. The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.

K is a constant that equals population size at the equilibrium point, in which the natality and the mortality rate get qual to each other.

Referring to population size as N, when

The sigmoid curve represents the logistic growth model.

Answer:

POINT A

Explanation:

Just took the test :)

This question seems to be incomplete. However, there is enough information to find the right answer.

Answer:

Three color receptors that responded in an opponent-process fashion had been proposed by Hurvich and Jameson; this arrangement was later verified by DeValois in monkeys.

Explanation:

In "An opponent-process theory of color vision" (1957), Hurvich and Jameson developed the opponent-color system. In "Color Vision Mechanisms in the Monkey" (1960), De Valois confirmed the existence in monkeys of color-opponent ganglion cells in the retina and color-opponent cells in the lateral geniculate nucleus of the thalamus. De Valois himself states in his research that there´s a clear close parallel between the behavior of what he calls "on-or-off cells" and the findings o Hurvich and Jameson.

Answer:

The evolution of the horse may be seen in the fossil record. The horse walked in a straight line. The horse grew from the size of a little dog to the bigger horse of today. Mules were the forerunners of the modern horse. Bears were previously linked to contemporary horses.

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1. Parasitic nutrition, Saphrophtic noutrition

parasitic: cuscuta

saprophytuc : rhizopus

2. Cuscuta is categorised as parasite because It obtains it's food through the host plant.

3. Lichens are groups of fungi and Algae.

Answer:

Explanation: 1 Ans) the different modes of nutrition observed in plants are parasitic nutrition and saprozoic nutrition. Egs: Scandal plant and Yeast respectively.

2 Ans) Cuscuta is categorized as a parasite because it obtains nutrients from the main plant.

3 Ans)  Lichens are the symbiotic Relation of algae and Fungi. Eg: Bread Lichen.

Thank You, Sanj8577

Answer:

C. Simple diffusion

Explanation:

Simple diffusion from a high to low concentration is the most direct method that ions or molecules can move across a cell membrane.

Through this method, no proteins are required for transport, and no energy is used.

The ion or molecule being transported directly moves across the cell membrane, without any other factors involved.

So, the correct answer is C. Simple diffusion

Rough endoplasmic reticulum

Answer:

Rough endoplasmic reticulum is among the organelles that are found in eukaryotic cells. The reason as to why it is called rough is because it has ribosomes attached to its surface. Its main function is to produce proteins.

Explanation:

Answer:

Every cell performs a type of cellular respiration as it is required to produce energy. The point of cellular respiration is to turn high-energy molecules, know as glucose, into ATP, a form of usable energy. There are two types of respiration, aerobic and anaerobic. Aerobic goes through 3 stages and produces the most ATP by using oxygen and releasing carbon dioxide. Anaerobic does the same job but only uses one stage and produces much less ATP. This process gives the cell energy and continues the carbon cycle.

Answer:

All EeWw (100%)

Explanation:

This question involves two genes; one coding for earlobes and the other for hairline. According to the question, one parent is homzygous recessive for earlobe but homzygous dominant for hairline i.e. (eeWW) while the other parent is homzygous dominant for earlobe but homzygous recessive for hairline i.e. (EEww).

The cross between the two parents is as follows: eeWW × EEww. The following gamete combination will be produced by each parent:

eeWW - eW, eW, eW, eW

EEww - Ew, Ew, Ew, Ew

Using this gametes in a punnet square, the following proportion of offsprings will likely be produced:

All EeWw

Answer:

C. Dr

Explanation:

Gametes only carry one allele for each trait

Answer:

Outer shell for protection, preventing any germs / orgasims / bugs getting into it?

Explanation:

Guess

Answer:

C. Releases hormones to regulate the endocrine system

Explanation:

Release hormone to regulate the endocrine system. Therefore, option (C) is correct.

The pancreas is a vital organ located in the abdomen, behind the stomach. It has both exocrine and endocrine functions. The exocrine part produces enzymes that help in the digestion of food in the small intestine, while the endocrine part produces hormones that regulate blood sugar levels. The hormones produced by the pancreas include insulin, glucagon, somatostatin, and pancreatic polypeptide.

Insulin helps to lower blood sugar levels by promoting the uptake of glucose into cells, while glucagon raises blood sugar levels by stimulating the liver to release glucose into the bloodstream. Somatostatin helps to regulate the release of insulin and glucagon, and pancreatic polypeptide plays a role in digestion and appetite regulation. Dysfunction of the pancreas can lead to various disorders, including diabetes and pancreatic cancer.

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Answer:

Vitamin D is essential for strong bones,because it helps the body use calcium from the diet.

Answer:

10.7

Explanation:

According to this question, we have 4.60 × 10^-4 M hydroxide ion (OH-) concentration.

Since we were given the OH concentration, we first calculate the pOH of the solution, which is given as:

pOH = -log {OH-}

pOH = - log {4.60 × 10^-4}

pOH = - log {0.000460}

pOH = 3.337

pOH = 3.34

Given that; pOH + pH = 14

The pH of the solution = 14 - pOH

pH = 14 - 3.34

pH = 10.66

pH = 10.7

Answer:

The answer is 10.7

Explanation:

Answer: O polar covalent bonds because oxygen is more electronegative than hydrogen

Explanation:

In the water molecule the two hydrogen atoms and one oxygen atoms forms the chemical structure in this the covalent bond is formed between hydrogen and oxygen and this is formed due to sharing of electrons between hydrogen and oxygen and oxygen being electronegative requires two electrons to complete its valency which are provided by two electrons each from one hydrogen and the O polar covalent bond is formed by this way.

Answer:

d

Explanation:

edge 2020

The thin outer layer of the skin is known as the Epidermis. So, the correct option is D.

The epidermis, which is referred to as the skin's outermost layer, shields the body from the elements. Depending on the kind of skin, the epidermis can be as thin as.05 mm on the eyelids or as thick as 1.5 mm on the palms and soles of the feet.

The body is shielded by the epidermis from harmful substances like chemicals, pathogens (bacteria, viruses, fungus, and parasites), and ultraviolet (UV) radiation. The epidermis, which is the skin's outermost layer and gives skin its tone, serves as a waterproof barrier. The dermis, which lies underneath the epidermis, is made up of hard connective tissue, hair follicles, and sweat glands.

Thus, the correct option is D.

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HERE IS UR ANSWER

_____________________

The kidneys are powerful chemical factories that perform the following functions:

Answer:

The correct answer is - damaged, effector organ, neurilemma, damage, distance, cell body, decreased.

Explanation:

PNS axons are prone to cuts, and other types of injuries. A damaged axon can regenerate if the effector organ remains intact and a critical amount of neurilemma is found.

The degree of success of these axons regeneration depends upon factors that are (1) the amount of damage, and (2) the distance between the site of the damaged axon and the cell body it innervates The possibility of repair is reduced with an increase in either of these two factors. Neurolemmocytes play an active role in regeneration

I think the answer will be climax community

Answer:

The answer I think is a Climax community

Atomic size increases down a group and descreases across a period because when going down a group number of shells of elements increases and across periods number of shells stay the same but the number of electrons increases which will cause too much weight on the atom and it gets diminished. so according to that:

3. A

4. B

5.C( because noble gases are stable)

1.A

2.C

Answer:

3. (a)

4. (c)

5. (c)

1. (a)

2. (b)

Explanation:

3.

from left to right across a period the atomic size decreases because the nuclear charge increases while the no. of valence shells remains constant. The strong electrostatic force between the nucleus and the electrons draws the outermost shell inwards resulting in decrease of atomic radius from left to right.

so, the answer is a. atomic radius of elements decreases from left to right.

4.

Argon has the largest atomic size. Yeah I know, I just said that the atomic radius decreases on moving across a period BUT Nobel gases are exception. In fact they have the largest atomic size in a period. This is because their valence shells are complete and this cause the internal electrons to repel each other thus pushing the valence shell away from the nucleus causing the atomic size to increase.

so the answer is c. Argon

5.

Halogens have the smallest radius in a period. Because their nuclear charge is greatest in a period.

so the answer is c. Halogens

CONCLUSION :-

1.

since, the atomic size increases down the group and decreases along a period the biggest elements are arranged in the bottom and in the left side of the periodic table.

so option a.

2. For metals the atomic radius is directly proportional to their reactivity

metals have to lose electrons in order to become stable and the easier they lose electrons the higher is their reactivity also that a metal will lose electrons easily if it's atomic radius is large so that the outermost electrons are loosely bonded and can be withdrawn easily.

so option. b.

Explanation:

During the first week after menses (in a 28 days cycle), FSH continues to increase, the follicles grow intensely and FSH increases the expression of its own receptor and of the LH receptor on the granulosa cells.

Nucleic acids are biomolecules that are composed of nucleotides, a type of monomer, or building blocks.

Answer:

The correct answer is "stop codon"

Explanation:

Codon is a trinucleotide (three nucleotides) sequence that translates to a specific amino acid or stops the translation of genetic sequence to amino acids. There is a codon table that is usually used to determine the corresponding protein.

However, a sequence of DNA or RNA sequence will have 3 nucleotides (codons) each been translated to a specific amino acid. For example, the sequence below can be translated as follows

5' - UAUGGAUUUAGACACUAG -3'

UAU - Tyrosine

GGA -Glycine

UUU - Phenylalanine

AGA - Arginine

CAC - Histidine

UAG - stop codon

The stop codon is a codon that doesn't code for any amino acid and signals the stop of protein synthesis/gene translation of a sequence. There are three stop codons which are UAG, UGA and UAA.

Answer:

Tallness.

Explanation:

Tallness is the critter trait that is affected by an environmental factor, such as light, temperature, or  diet because the organism remains short if they are not getting food properly as well as temperature. Food provides essential nutrients that contribute in the growth of organism. Suitable temperature of the body allows the different functions in the body to be done which directly affects the growth of the body and the organism becomes taller.

Answer:

dear, your question seems to be incomplete.......plz ask it again