Which of the following does not happen when a cell divides?
a. the cell’s volume decreases.
b. it becomes easier for the cell to get rid of wastes.
c. each daughter cell receives its own copy of the parent cell’s dna.
d. it becomes more difficult for the cell to get enough oxygen and nutrients.?

The answer is B. As tectonic plate move, the climate on the continent change (though ever so unperceptively slowly) due to changes in latitude. This change in the environment requires that species of both plants and animals adapt to the new climate. The selection pressures of natural selection will act upon the variations in the population and the best adaptable features will be conserved (while unfavorable traits will be slowly stymied over genrations) in the population hence the genotype and phenotype of the population will gradually change.  

Answer: Metaphase I

During metaphase I homologous chromosomes get arrange in the center of the cell. In metaphase I  pair homologous chromosome line up between the two poles of the cell form the metaphase plate. The spindle fiber microtubule attach at the kinetochore proteins of the centromere of each chromosome.  

Answer:

Metaphase I  is the correct answer.

Explanation:

Metaphase I phase of meiosis are tetrads of homologous pairs lined up along the center of the cell and attached to the spindle fibers.

Meiosis is a type of cell division where chromosome number gets reduced by half and it produces four haploid cells.

meiosis comprises the steps of meiosis I and meiosis II

In the metaphase I the tetrads align themselves at the metaphase plate whereas, in metaphase II chromosomes align up separately along by the metaphase plate.

Anaphase I chromosomes separate and in Anaphase II sister chromatids of every chromosome get separated and they move towards the opposing poles.

Thus the correct answer is Metaphase I.

Answer:

B. Viruses cannot replicate by themselves.

Explanation:

Viruses cannot replicate on their own, they need a host. Viruses do not have cells, they are only made up of nucleic acid and proteins. Viruses are defined as an infectious particle that replicates when it infects a host cell and uses its machinery to create more viruses.

Viruses require a host cell for replication, while bacteria are complete cells capable of independent reproduction. The correct option is B: Viruses cannot replicate by themselves.

Viruses are microscopic infectious agents that are composed of genetic material (DNA or RNA) enclosed in a protein coat called a capsid. They are considered to be on the borderline between living and non-living entities.

Thus, the correct option is B.

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Organic compounds contain carbon and are typically associated with living organisms, studied within organic chemistry, while inorganic compounds do not contain carbon-hydrogen bonds, are associated with non-living matter, and studied within inorganic chemistry. Both types follow natural laws and may share some properties, though they are traditionally categorized by their composition and association with living or non-living sources.

Difference Between Organic and Inorganic Compounds

The primary difference between organic and inorganic compounds is rooted in the presence of carbon. Organic chemistry is the study of carbon compounds, and encompasses a vast majority of chemical compounds known today. In contrast, inorganic chemistry focuses on compounds that do not contain carbon-hydrogen bonds, which include most of the other elements in the periodic table. Despite this distinction, both organic and inorganic compounds follow the same natural laws, and sometimes they share similar chemical and physical properties, making it difficult to distinguish them clearly. However, by tradition and utility in classification, organic compounds are generally associated with living organisms or products derived from living organisms, like organic fertilizers and organic foods, which are grown without synthetic pesticides or fertilizers. Inorganic compounds include salts, metals, and minerals, which are often extracted from the earth or synthesized through non-biological processes.

Answer: When pollen moves from the Anthers to the Stigma, fertilization can occur.

Explanation:

Anthers are part of the male reproductive organ of the flower and there we can find the pollen grains, where the reproductive cells of the plant are located. Stigma is the part of the organ female reproductive system that receives the pollen grains.

Thus, pollination is the process of transporting anther pollen to the stigma of flowers, this is the first step in the reproduction of flowering plants. When the pollen grains reach the stigma and subsequently reach the ovum we have this part developed into seeds, while that the ovary will turn into fruit.  The pollinating agents are those that "carries" the grain of pollen through the environment until it reaches the stigma of the flower. We can cite as examples, the anemophilous pollination, made by the wind; hydrophilic pollination, made by water and the zoophile pollination, made by animals.

Answer:

Embryo

Explanation:

The embryonic stage starts at the beginning of third week. Before this, the stage of  fertilized egg is known as blastocyst. Once the embryonic stage is reached, the cell of blastocyst become distinct and starts dividing to form human being. Thus, after the 15th day of development the growing cell mass is referred to as embryo.  The embryonic stage continues till the 8th week. By the start of 9th week , the growing cell mass converts into a fetus and this stage continues till the birth of child.

The largest organizational level in a coral reef is the ecosystem, characterized by its complex biodiversity and the physical environment's interactions.

The largest organizational level found in one coral reef is the ecosystem. A coral reef ecosystem comprises different biological communities and physical elements in the environment interacting as a system. It is a large network of symbiotic relationships, high biodiversity, and intricate interactions among various organisms such as fish, invertebrates, and the foundational coral species that build the reef structure by secreting calcium carbonate skeletons. Vital to these ecosystems are the warm waters and sunlight penetration, which enable the photosynthetic algae, living in a mutualistic relationship with the corals, to provide nutrients necessary for the reef's growth and maintenance.

Starch is a polymer made up of glucose monomer units. When consumed, starch is broken down into glucose, which is used as an energy source.

Starch is a polymer composed of these glucose units linked together through a process called polymerization. When consumed by an organism, the starch is broken down into its monomer glucose components, which are then used as an energy source.

Therefore, among the choices presented, amino acids, fatty acids, glucose, and nucleotides, the correct answer is glucose.

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The xylem is crucial for transporting water and dissolved minerals from roots to a plant's leaves and providing mechanical support due to its lignin-reinforced structure. It consists of vessels and tracheids which form tubes for efficient water movement and are non-living at maturity.

The xylem is an essential component of a plant's vascular system, carrying out two primary functions within the plant body. The primary role of xylem is the transportation of water and dissolved minerals from the roots throughout the plant all the way to the stems and leaves. Beyond this, xylem also provides mechanical support to the plant structure due to its strong and rigid nature.

Xylem tissue is composed of different cell types including vessels, tracheids, fibres, and parenchyma cells. Vessel elements and tracheids form long tubes that are effective in transporting water, and these cells are non-living at maturity, meaning they lack protoplasm and are devoid of end walls, allowing for unobstructed flow of water.

The walls of these cells are often reinforced with lignin, a substance that makes them tough and prevents collapse under the pressure of water transport, also contributing to the overall rigidity of the plant.

In terms of structural functionality, secondary wall thickenings, such as spirals, rings, or pits, can be observed in xylem vessels, adding to their strength and efficiency in water transport. These features enable the xylem to withstand pressure changes as water moves upwards against gravity from roots to leaves.

Answer:

Plant cells have a large central vacuole that controles the water pressure.

Explanation:

The vacuole is a cell organelle found in plant cells. The vacuole contains fluids and other molecules. It controls the water pressure inside the cell's body and it uses water itself to do it. Vacuoles are one of the biggest plant cell components and they have a strong membrane to keep the water under pressure. They are even bigger than the nucleus.

Answer:

1. C

2. Letter B

3. C

4. C

5. B

100%

Explanation:

Answer:

The correct answer is option A, Photoreceptors

Explanation:

Photoreceptors basically function by changing their color when exposed to light. In human body photoreceptors are  found in the eyes. When light strike on the photoreceptors, electrical signals are generated which are sent to the brain through the optic nerves. Human eye has two types of photoreceptors- Rods and Cones. Rods detect light sensation while cones detect the color.  

In answering the question, the neurons that detect light stimuli are photoreceptors. They are found in the retina of the eye and convert light energy into electrical signals, aiding in the perception of vision. They differ from other receptors like olfactory, chemoreceptors, and mechanoreceptors.

The neurons that detect light stimuli are photoreceptors. These specialized cells are located in the retina of the eye and are responsible for converting light energy into electrical signals that can be interpreted by the brain. This process is essential for the sense of vision.

There are two main types of photoreceptors - rods, which are used for detecting light intensity and making vision possible in low light conditions, and cones, which are used for color perception.

They are different from olfactory receptors, which are involved in the detection of smell, chemoreceptors that detect chemical stimuli, and mechanoreceptors that sense mechanical stress or strain such as pressure or vibration.

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Electron microscope can be used to view viruses. So, the correct option is (B).

A microscope is defined as a laboratory instrument used to examine objects that are too small to be seen by the uncovered eye where as microscopy is the science of examining small objects and structures using a microscope. Microscopic means invisible to the eye unless aided by a microscope.

These are instruments that allow us to see objects more closely that look beyond what is visible to the uncovered eye. Without them, we would have no knowledge of the existence of cells or how plants breathe or how rocks change over time.

Electron microscopy (EM) is used in the discovery and description of viruses for viewing it clearly for the study.

Thus, Electron microscope can be used to view viruses. So, the correct option is (B).

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Answer:

D. In both commensalism and parasitism, organisms live in close physical proximity and one benefits from the interaction. However, only in parasitism is one organism harmed

Explanation:

Parasitism: is a relationship between two organisms where one is usually harmed and the other gets benefits from the relationship. (Whale lice on a right whale)

Commensalism: an association between two organisms in which one benefits and the other derives neither benefit nor harm. (A remora on a lemon shark)

Urban sprawl is not caused by deforestation; instead, it is related to the expansion of human populations into low-density areas. Deforestation leads to soil erosion, increased atmospheric CO2 levels, and loss of wildlife habitats.

The environmental problem that is NOT caused by deforestation is urban sprawl. Urban sprawl refers to the expansion of human populations away from central urban areas into low-density, monofunctional and usually car-dependent communities. Deforestation, in contrast, can lead to issues such as soil erosion, an increase in atmospheric CO2 levels, and the reduction of wildlife habitat. These issues arise as trees, which prevent soil erosion, absorb CO2 and provide habitats for many species, are removed. Urban sprawl is more directly related to population growth and the desire for more space and resources, rather than the specific act of deforesting areas.

Explanation:

The menstrual cycle is a natural process that occurs in the female reproductive system.

it is important to study the menstrual cycle because

The menstrual cycle is necessary for egg production and preparing the uterus for pregnancy, involving crucial changes regulated by hormones. It includes various stages that are all significant, with ovulation often seen as most critical for fertility. Tracking the cycle using a menstrual calendar helps in understanding and managing reproductive health.

Importance of Studying the Menstrual Cycle

Studying the menstrual cycle is vitally important for several reasons. It is necessary for the production of eggs and the preparation of the uterus for potential pregnancy. The cycle involves significant changes to both the ovaries and the uterus, which are governed by pituitary and ovarian hormones. Understanding these changes can help in the management and treatment of various health conditions, as well as for family planning purposes.

The most important part of the female menstrual cycle could be considered ovulation when a secondary oocyte is released, as this is the time when fertility is at its peak. However, every stage of the cycle plays a crucial role, from the shedding of the uterine lining (menstruation) to the build-up of the endometrium in preparation for a potential embryo. Additionally, a menstrual cycle calendar can be instrumental in tracking these stages.

Key organs involved in the cycle are the ovaries, where follicle development and ovulation occur, and the uterus, which develops a rich lining capable of supporting a pregnancy. Should fertilization not take place, this lining is shed during menstruation, marking the start of a new cycle

The right answer is adjust the temperature settings - cooler in winter and hotter in summer.

To save electricity consumption by air conditioners, it is advisable to:

* Do not exceed 8 ° C difference between inside and outside

* Switch off the air conditioning when leaving at night or shift the set point, for example from 25 ° C to 28 ° C (valid for heavy buildings with high inertia)

* When you turn on your air conditioner, there is no need to set the thermostat too low, the room temperature will not drop faster

* Close your windows and doors in an air-conditioned room to avoid overconsumption of energy!

* Clean the filters.

* Insulation saves up to 5 ° C indoor temperature and almost 20% savings on your energy bill

A snowflake has six points. Due to the peculiar chemical makeup of water and the way snowflakes develop, this hexagonal shape is produced.

Thus, an ice crystal is created when atmospheric water vapor condenses and solidifies around a dust particle. Water molecules organize themselves into a hexagonal lattice as the crystal expands. The overall form of the snowflake is determined by this pattern.

The crystal often displays six symmetrical arms or points as it grows branches and complex patterns. It's crucial to remember that not all snowflakes are completely symmetrical, and differences might happen as a result of the temperature and humidity levels present at the time of production.

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Answer:

The correct answer would be c.)reduction

Oxidation and reduction occur when transfer of electrons takes place from one element or atom to another.

The atom which receives or gains electron is said to be reduced while the atom which looses an electron is said to be oxidized.

For example, in cellular respiration oxygen gains electrons and H⁺ ions and is converted into water which is released as the byproduct of the process.

1/2 O₂ + 2 e⁻ + 2 H⁺ → 2H₂O

Answer:  A) Lost to the environment in the form of heat

The chemical energy is the form of energy that is obtained from the food being eaten by the organism. This energy is converted into different forms.These include kinetic energy (required during muscular movement or contraction), electrical energy (required to transmit the nerve impulse) and light energy (useful in producing bio luminescence by the organisms). All these activities occurred due to different forms of energy, results in various exothermic reactions occurring inside the body of the organism. The product of exothermic reaction is heat energy, which is released as a by-product. This energy cannot be recycled to produce any other form of energy, that can be used again by the organisms. This energy is lost from the ecosystem.

A. by building highways, railways, and airports

C.by providing power and Internet connections

D.by importing or developing innovative technologies

Physical capital applies to circumstances of production that subsist in a material way and could participate in the improvement of the effectiveness of commercial operation which is conducted out by the nation. Although the development of substantial training and the enhancement of food nutrition could be deemed as an expenditure,  However, it does not directly involve in the expansion of the physical capital.

Answer:

A. by building highways, railways, and airports

C.by providing power and Internet connections

D.by importing or developing innovative technologies

The probability of a gamete from a Gg parent pea plant containing the G allele is 50 percent, analogous to a coin toss.

In genetics and biology, the process of gamete formation is similar to tossing a coin. When a parent pea plant with a heterozygous genotype, such as Gg, forms gametes during meiosis, the two alleles (G and g) segregate and each gamete receives only one of the alleles. Therefore, the probability that one gamete will contain the G allele is 50 percent, just as there's a 50 percent chance of a coin landing on heads.

Answer: d. all of the above

A riparian zone is the interface zone between the land and a river. The plants near the banks of the river forms the riparian vegetation. This vegetation consists of hydrophilic plants. This area contains pollution from the runoff because the vegetation restricts the flow of pollutants in the water. It reduces soil erosion as the plants are holding the soil which does not dispense in the river water. This zone supports the growth of diversity of plants and animals which are terrestrial and amphibians (which requires both land and water habitats for their survival).  

(D) All of the above

On edge it states:

Which of the following did you include in your response?

- morphological data

- biochemistry

- DNA sequencing

Hope this helps you out ;P