Which of the following is an agricultural science that deals with crop production and improvement.
Genetics
Biology
Botany
Argonomy

Answer:

The major steps of protein synthesis are:

1. Transcription

-before a protein can be synthesized, the DNA information or code must first be copied or transcribed to a type of RNA called mRNA (messenger RNA). Bothe the codes in DNA and mRNA are carried as units called codons.

2. Translation

-in the ribosome, the code carried by the mRNA is translated into a sequence of amino acids that will form the protein molecule dictated by the DNA.

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Answer:

The answer is 25%.

Have a good day.

Answer:

population

Explanation:

The answer is population

Answer:

2 ATPs are produced in fermentation and 38 ATPs are produced in cellular respiration

Explanation:

A cell undergo lactic acid fermentation only when there is no oxygen i.e anaerobic condition only. This usually happens when a person do rigorous exercise and the oxygen demand escalate suddenly which is unmet by normal respiration process.

In fermentation,  carbohydrates such as starch or sugar convert  into lactic acid or alcohol in the absence of oxygen with production of 2 ATP while in cellular (aerobic respiration) nearly 38 ATPs are produced

Answer:

c

Explanation:

Answer:

Flowers with both functioning male and female parts called as perfect flowers and flowers missing one of the male or female parts called as imperfect flowers.

Explanation:

Plants may produce imperfect flowers or perfect flowers. The main male reproductive part of plants is the stamen and pistil is the main female reproductive part. If both male part and female part are present and functional in a flower, referred as a perfect flower. If anyone of the male part or female part is missing or underdeveloped or not functioning is referred as an imperfect flower.

Imperfect flowers are unable to pollinate themselves directly because they lack the male or female components needed for fertilisation.

The ideal flower has both male and female reproductive organs, including the pistil, which houses the ovary and stigma for fertilisation, and the stamen, which contains the pollen-producing anther. These flowers can pollinate themselves since they have both male and female components on the same blossom. On the other hand, imperfect blooms are devoid of either the male or female reproductive organs. They can also be divided into two groups: pistillate flowers, which have a functioning pistil but no stamens, and staminate blooms, which have just stamens and no functional pistils.

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Answer: The given is False.

Internal sleep and wake cycles are controlled by circadian biological clock of the body. It is located in the brain. The biological clock produces circadian rhythms in the body which are mental, physical, and behavioral responses of body which follow an everyday cycle.

A tiny region ( Suprachiasmatic nucleus, SCN ) in hypothalamus of the brain controls the circadian rhythms. It does this by generating neuronal and hormonal activities.

Thus, the statement that adrenal glands control internal sleep and waking cycles is False.

The chemical that promotes phototropism is auxin, which is essential for cell elongation, allowing plants to bend towards light for optimal photosynthesis.

The chemical that promotes phototropism is auxin. Auxins are plant hormones that play a crucial role in facilitating the elongation of cells, which is a key process in phototropic responses. In plants, phototropism is the bending towards light, allowing plants to maximize their light exposure for photosynthesis. Auxin accumulates on the shady side of a plant, promoting cell expansion and resulting in the bending of the plant toward the light. This process is essential not only for phototropism but also affects gravitropism, apical dominance, and root growth.

Auxins, such as indoleacetic acid (IAA), are found in actively growing parts of the plant. They are integral to plant responses to environmental changes, development, and growth. These hormones are also used in commercial applications, such as promoting the synchronization of fruit setting in crop production.

The right answer is  B.

Puberty is a stage of development that is reached when reproductive organs are functional. In humans, it refers to the transition from childhood to adulthood. It is particularly notable for its rapid growth due to growth hormones and the development of primary and secondary sexual characteristics due to sex hormones, with notable behavioral changes including an increased need for sleep due to a shift in melatonin release.

Note that each teenager follows his own development and that there is no pre-established order.

The wind speed is a fundamental quantity of atmosphere that is caused by air moving from pressure high to low due to changes in temperature i.e., pressure gradient.

A physical quantity that shows direction and rate the pressure that increases the most rapidly around a particular location is pressure gradient.

The wind speeds are determined by moving air from pressure high to low due to changes in temperature which means air pressure gradient.

Thus, the answer is air pressure gradient.

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The correct statement is that atoms tend to react to achieve 8 electrons in their outermost shell, adhering to the octet rule, and forming chemical bonds like ionic bonds through the attraction between oppositely charged ions.

Among the provided statements, the correct one is that atoms tend to react so that they acquire 8 electrons in their outermost shell. This is known as the octet rule, which describes the tendency of atoms to prefer to have eight electrons in the valence shell, as this configuration provides stability. Chemical bonds, such as ionic bonds, are indeed formed through the attraction between oppositely charged ions, where atoms can either lose or gain electrons to achieve a full octet.

The other options are false. Chemical bonds are not repulsive forces; they are attractive forces that serve to bind atoms together. Moreover, the most reactive atoms are typically those that do not have a full set of eight valence electrons, as they seek to gain, lose, or share electrons to achieve a full valence shell.

Final answer:

The period of cell growth and duplication of cell parts is called interphase. Interphase consists of three stages: G1, S, and G2, during which the cell grows, replicates its DNA, and prepares for division.

Explanation:

The period of cell growth and duplication of cell parts is called interphase. Interphase is the phase of the cell cycle during which the cell grows, carries out normal metabolic functions, and replicates its DNA. It consists of three stages: G1, S, and G2.

During G1, the cell grows and doubles its organelles. In the S phase, the cell replicates its DNA. And in G2, proteins are synthesized that will help the cell divide. After interphase, the cell enters the mitotic phase, which includes mitosis and cytokinesis, resulting in the formation of two daughter cells.

Answer:

D. The cell's energy level will diminish as the enzyme decreases.

Explanation:

Cellular respiration in our body occurs so that our body could generate energy in the form of ATP primarily from carbohydrates. A series of reactions catalyzed by various enzymes facilitate cellular respiration. If our diet lacks the enzymes which are responsible for carrying out cellular respiration and there is no means to produce those enzymes effectively in our body then the cellular respiration reaction will become slow as less enzymes will be available to catalyze the reactions which lead to cellular respiration. Less enzyme means less conversion of substrates into products which leads to less production of ATP. If less ATP will be available then cell's energy level be low.

Answer:

The correct answer is option D

Answer:

The correct answer would be pathway C.

Pathway C represents aerobic respiration whereas pathways A and B represent fermentation.

Under aerobic respiration, the cell or organism is able to completely oxidize the glucose.

It produces a large amount of energy (approximately 36-38 ATP) as compared to the fermentation which only produces two molecules of ATP.

Most of the reactions of aerobic respiration take place in the mitochondria.  

It includes glycolysis, pyruvate decarboxylation, Krebs cycle, electron transport chain, oxidative phosphorylation.

Explanation:

Haploid cells have the half number of chromosomes(n) than the other groups. Other groups may be diploid, triploid, or sexual and asexual etc. Diploid cells have two complete set of chromosomes(2n), triploid cells have 1 complete set of chromosomes and a 1 half number of chromosome that is (3n). Diploid cells present in each cell an organism and haploid cells are present in gametes forms during spermatogenesis and oogenesis. Mitosis is the parent cell divided into the two daughter cells  with equal to 2n. Whereas meiosis produces four genetically different daughter cells.

it is a simple microscope

It was a compound light microscope through which microscopes were cells first observed by Robert Hooke. The correct option is C.

Microscopes are electronic magnifying machines that are sued to see very minute objects and the sample of the cell, like blood, or serum. They contain magnifying glasses which make the small things look clear.      

The different types of microscopes that are used in scientific research and experiments are:

The majority of microscopes used in research labs and other settings are called compound microscopes because they use separate objective and eyepiece lens assemblies to provide significantly higher magnification powers.

Thus, the correct option is C. compound light microscope.

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Answer:

DFG = 48°.

JKL = 42°.

Explanation:

DFG and JKL are the complementary angles.

Complementary angles may be defined as the angles that has the sum of 90°.

∠DFG + ∠ JKL = 90°.

∠DFG = x+2 and ∠ JKL = x-4.

x+2 + x-4 = 90°

2x- 2 = 90°

x = 46°.

DFG = x+2 = 46+ 2 = 48 °.

JKL = x-4 = 46-4 = 42°.

Thus the answer is DFG = 48 and JKL = 42°.

Anna's assumption that salty water helps plants grow better is incorrect. High salinity in watering water can cause dehydration and toxicity in plants, resulting in wilting or death. While some specialized plants can tolerate high salinity, it poses serious osmotic stress for most plants.

No, Anna's thinking is not correct. Watering plants with salty water can have detrimental effects on their growth and survival. Salinity in the water creates an osmotic effect that can cause water to diffuse out of the plants, leading to wilting and death. This is due to the plants' inability to absorb water efficiently when competing with high salt concentrations. Consequently, salt does not necessarily increase water uptake in plants but rather creates osmotic stress, posing a threat to their well-being.

In high-salt conditions, two main problems arise for plants: osmotic stress and the accumulation of toxic ions. The osmotic problem emerges as the soil's salt concentrations escalate, making it difficult for plants to obtain water, evoking a state of drought stress. Additionally, toxic ion accumulation occurs when saline levels are high, leading to detrimental effects on the cells, and potentially plant death if the salts are not efficiently excluded or sequestered.

Some plants have developed mechanisms to excrete sodium or sequester it in vacuoles to cope with saline conditions. There are specialized plants, known as halophytes, that have adaptations enabling them to survive in high salt environments. However, these are exceptions rather than the norm. For most plants, exposure to high salinity can lead to deleterious outcomes and negatively impact their growth and development.

Energy exists in different forms, including chemical, mechanical, radiant, and electrical energy.

Energy exists in different forms, such as chemical energy, mechanical energy, radiant energy, and electrical energy. Chemical energy is stored and released as chemical bonds are formed and broken. Mechanical energy directly powers physical activity. Radiant energy is emitted as waves, such as in sunlight. Electrical energy is the power of moving electrons.

Chemical Energy: This is the energy stored in the bonds between atoms and molecules. It's released during chemical reactions. For example, the energy in food is released and converted into other forms when it's digested.

Mechanical Energy: This is the energy associated with the motion or position of an object. It can be either kinetic energy (associated with motion) or potential energy (associated with position). For example, a moving car has kinetic energy, while a book on a shelf has potential energy.

Radiant Energy: Also known as electromagnetic energy, this form of energy includes visible light, radio waves, X-rays, and other forms of electromagnetic radiation. It travels in waves and carries energy.

Electrical Energy: This is the energy associated with the movement of electrons. It's what powers electrical devices and flows through wires to provide electricity for various purposes.

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Answer;

D. Most of the energy from photosynthesis flows out as heat

Explanation;

Energy flow is the amount of energy that moves through a food chain in a given ecosystem.

Producers such as green plants in a ecosystem convert energy from the the sun into carbon bonds, such as those found in the sugar glucose through the process of photosynthesis.

The amount of chemical energy storied as nutrients in the bodies and wastes of organisms flows through ecosystems from one trophic level to the next and through this flow energy also is lost as heat. And the chemical energy available to the succeeding feeding level decreases.

Final answer:

Neutrons are found in the nucleus and have a neutral charge. The proton has a positive charge, while the electron is negatively charged. Liquids allow particles to move somewhat freely, and gases have particles that are the least attracted to each other.

Explanation:

Neutrons are found in the nucleus and have neutral charge. Therefore, the correct answer is that neutrons are found in the nucleus with a neutral charge.

The particle with a positive charge is the proton. Protons are constituents of the nucleus and carry a positive electric charge.

The particle with a negative charge is the electron. Electrons orbit the nucleus and are negatively charged.

In the state of matter where particles move somewhat freely but not enough to fill the entire space of a container, the correct answer is liquid. Unlike solids, whose particles vibrate but do not move from place to place, particles in a liquid can move around each other, although they are still attracted enough to stay together.

Particles are the least attracted to each other in the gas state of matter, allowing them to fill the entire space of a container.

Osmosis Jones is metaphorically a white blood cell, which in biological context, helps protect the body against diseases and fights infections.

Osmosis Jones is a character from an animated film. However, relating this to biology, the character represents a type of cell known as a white blood cell. White blood cells are part of the immune system and help protect the body against diseases and fight infections. In Osmosis Jones' case, he is depicted as a police officer, patrolling the human body and defending it against viruses and bacteria. This characteristically mirrors the role of white blood cells in our bodies.

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Marine animals are impacted by ocean plastic because it can lead to entanglement, ingestion, and the spread of toxins, which can cause injury, illness, and even death.

Ocean plastic poses a significant threat to marine animals through several mechanisms:

1. Entanglement:

2. Ingestion:

3. Chemical Contamination:

4. Spread of Invasive Species:

5. Habitat Disruption:

Answer:

The answers are B, C, and D.

Explanation:

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