A student reads an article about a mutation.

Eyes with dark colors can provide an advantage in areas with intense sunlight, as the color protects the eyes. Eyes with light colors are more common in northern latitudes and formed because of mutations. Eyes with light colors mat be able to see more in low light but can tolerate less sunlight.

Which statement does the article support?

A. Exposure to low levels of sunlight causes the genetic mutation for lighter eye pigmentation.
B. Exposure to too much sunlight causes the genetic mutation for lighter eye pigmentation.
C. Genetic mutations do not occur in populations unless they create a survival advantage.
D. Genetic mutations can have positive consequences instead of negative consequences.

Energy is always lost as energy is moved from one level to another. ... The loss of energy due to the second law of thermodynamics results in a pyramid with a large base and a 10% ratio between levels.

Answer: Mitosis is the process in cell division by which the nucleus of the cell divides (in a multiple phase), giving rise to two identical daughter cells. Mitosis happens in all eukaryotic cells (plants, animals, and fungi). ... Mitosis is the reason we can grow, heal wounds, and replace damaged cells.

Explanation:

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The correct chronological order of these events is: A -> B -> C -> D.

A. Charles Darwin became a naturalist, studying the plants and animals around him.

B. Charles Darwin observed that similar birds had different markings on the different Galapagos islands.

C. Charles Darwin developed a theory based on his observations and interpretations about how natural selection occurred.

D. Charles Darwin published a book about the theory of evolution that was read by many people who were not scientists.

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Answer:

The liquid portion of the blood is called Plasma

Answer: Plasma

Explanation:

Blood plasma is a yellowish liquid component of blood that holds the blood cells of whole blood in suspension. It is the liquid part of the blood that carries cells and proteins throughout the body. It makes up about 55% of the body's total blood volume

Explanation:

1. Barr body is a drumstick-like structure of dense, coiled chromatin that appears normally in female's buccal cells and neutrophils. It represents the inactive X-chromosome (Females have two X-chromosomes. Only one is active.)

2. Liver cells are somatic, not sex cells and are thus diploid.

Answer: Molecule

Explanation:

The nuclei of prokaryotes are not membrane-enclosed. As a result, transcription, translation, and mRNA degradation can all take place at the same time.

The simultaneous occurrence of numerous transcription and translation activities on the same DNA template can quickly increase the intracellular level of a bacterial protein.

Prokaryotic transcription frequently involves many genes and results in polycistronic mRNAs that designate multiple proteins.

In prokaryotes, RNA polymerase is recruited by a promoter sequence on the DNA template that consists of two consensus sequences. A pace of 40 nucleotides per second is used in the elongation process to create mRNA in the 5′ to 3′ direction.

The mRNA is released at termination, which can happen either when rho proteins engage or when an mRNA hairpin forms.

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Fragmentation is a form of asexual reproduction and is seen in annelids, fungi, cyanobacteria, sponges, and flatworms.

In Fragmentation, an organism divides itself into a number of fragments. It occurs when an organism completely breaks down independently irrespective of the other parts. Each one of these fragments matures into fully grown adults that are clones of the original organism.

Asexual reproduction usually involves the participation of a single parent alone can produce new offspring. The newly produced individual is genetically identical to one another and its parent. Both multicellular and unicellular organisms divide by fragmentation which is asexual reproduction.

Fragmentation is the most common method of reproduction in lower invertebrates. It is seen in many organisms including filamentous cyanobacteria, algae, lichens, molds, many plants, and animals such as flatworms,  annelid worms, sponges, and sea stars.

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The organisms that can reproduce by fragmentation are Option d Sponges and Sea anemones.

Fragmentation is a form of asexual reproduction in which an organism breaks into two or more fragments, and each fragment develops into a new individual. Both sponges and sea anemones are examples of organisms that exhibit this mode of reproduction.

Sponges are simple multicellular animals that lack true tissues and organs. They possess a porous body structure, and when a sponge is fragmented, each fragment has the potential to develop into a new sponge through regeneration. These fragments contain specialized cells called archaeocytes that can differentiate into various cell types required for the formation of a new sponge.

Sea anemones, on the other hand, are marine animals belonging to the phylum Cnidaria. They have a cylindrical body with tentacles surrounding their mouth. When a sea anemone is fragmented, each piece can regenerate into a complete individual. The process involves the differentiation of cells within the fragments, leading to the development of new tentacles, body parts, and eventually a mature sea anemone.

Both sponges and sea anemones have remarkable regenerative abilities, allowing them to reproduce through fragmentation. This form of asexual reproduction enables them to colonize new areas, expand their population, and adapt to changing environmental conditions. Therefore the correct option is D

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The Question was Incomplete, Find the full content below :

The organisms which can reproduce by fragmentation are:

(a) Corals and Sponges

(b) Corals and Spirogyra

(c) Sea anemone and Spirogyra

(d) Sponges and Sea anemones.

A geologic feature with at least three layers that demonstrates the principle of lateral continuity is called a Grand Canyon.

According to the lateral continuity concept, sedimentary rock strata were formerly continuous over wide areas. As a result, any layer discontinuities must be the result of erosion or other geologic processes.

The layers in this sketch are continuous laterally, which means they extend in all directions while holding onto their thickness and makeup. We can presume that the layers go farther in all directions even though we can only see a small section of them in this sketch. This is significant because it enables geologists to link the age and make-up of distinct rock layers.  

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During Oxidative phosphorylation NADP is oxidized to NAD, the electron released during this reaction is used as energy to reduce oxygen and form water.

During non-cyclic phosphorylation, NAD+ is reduced to NADP using the electrons carried by the primary acceptor.

The correct option is number 2.

Answer:

A

Explanation:

Answer:

The gene will code for a different protein than it should.

Explanation:

Following a schedule does not cramp me, rather it appeals to me.

A schedule is a plan that specifies the time and duration of activities, events, or tasks that need to be accomplished. It can be in the form of a calendar, planner, or list of tasks to be done at specific times.

Several reasons make having a schedule important include:

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Science teachers consider practical sciences to be a valuable component of science education for several reasons:

Hands-on Learning: Practical sciences provide students with the opportunity to engage in hands-on learning experiences. This approach allows students to actively explore and manipulate materials, conduct experiments, and make observations.

Example: In a biology class, students may conduct a dissection of a preserved specimen to study the anatomy and structure of organisms. By physically dissecting and examining the different organs and systems, students gain a tangible understanding of the subject matter.

Application of Theory: Practical sciences enable students to apply theoretical knowledge acquired in the classroom to real-world situations. By engaging in practical activities, students can bridge the gap between abstract concepts and their practical applications, fostering a more comprehensive understanding of scientific principles.

Example: In a chemistry class, students might perform experiments to understand chemical reactions and concepts like stoichiometry. By actually mixing and observing different substances, measuring quantities, and analyzing the results, students can see how theoretical concepts translate into practical applications.

Development of Scientific Skills: Practical sciences help students develop essential scientific skills, such as critical thinking, problem-solving, observation, data analysis, and communication. Through practical activities, students learn to formulate hypotheses, design experiments, collect and analyze data, draw conclusions, and communicate their findings effectively.

Example: In a physics class, students could design and conduct an experiment to investigate the relationship between force and motion. By planning the experiment, taking measurements, analyzing the data, and presenting their findings, students enhance their scientific skills and develop a deeper understanding of physics concepts.

Engagement and Motivation: Practical sciences often increase student engagement and motivation in science education. Hands-on activities provide a more interactive and dynamic learning environment, making science more interesting and accessible to students. It can spark curiosity, promote active participation, and cultivate a sense of wonder and excitement about the natural world.

Example: In an environmental science class, students may visit a local ecosystem to conduct field observations, collect samples, and analyze the data they gather. By immersing themselves in the real environment and actively participating in the scientific process, students are more likely to be motivated and engaged in their learning.

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Answer:

The lipid bilayer is hydrophobic that is hydrophobic and it can easily cross the lipid bilayer.

Toulene is a hydrophobic and neutral molecule compound so it can easily pass through the bilayer. It is an aromatic compound with a methane group attached to the benzene ring. It is smaller in comparison to Phenylalanine.

Phenylalanine-- It is an amino acid with a benzene ring attached to it. This amino acid is less hydrophobic than the aliphatic amino acids. Because of its less hydrophobic nature, it travels slowly compared to Toluene. It is also larger and has amino and carboxyl groups attached to it. On the other hand, Phenylalanine is a polar compound which has -COOH and -NH2 group. which prevents its delay in its transport across the lipid bilayer.

The phylogenetic tree from above inferred the simple relationship of how the different species of living organisms evolved from phylum Porifera to phylum echinodermata.

A phylogenetic tree can simply be defined as a system of classification of living organisms showing the orgins of different organisms from the simplest to the most complex forms. It tells us how these plants and animals evolved from. their ancestral origins. Animals are generally classified into the vertebrates ( those animals that have backbones ) and invertebrates ( those animals without the backbones )

That being said, from the task given above, the tree shows the phylogenetic tree of animals of the following organisms:

So therefore, it can be deduced that the classification of living organisms is the based on their similarities and differences.

The complete image is attached.

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Answer:

the answer is B

Explanation:

Answer:

In trematodes the tegument contains a number of invaginations or surface pits, and is externally lined with minute tubercles among which are dispersed bristle-like projections called "spines". Spines are embedded in the basal lamina and the tip is finely pointed to the external surface.

Explanation:

Answer:

If a vial of morphine has 10 mg/mL, and a dose of 4 mg is required to be administered intravenously, 04 mL must be administered to fulfill the indication.

Explanation:

Morphine is a drug, an opioid derivative, with a potent analgesic and sedative effect. Its use is intended for acute or chronic severe pain, mainly related to cardiovascular disease, cancer or severe trauma.

One vial of morphine vial has a concentration of 10 mg/mL, so if 4 mg is required, a simple calculation must be made:

Morphine: 10 mg ------------ 1 mL

Dose:          4 mg ------------ X

X = (4 x 1)/ 10

X = 4/10

X = 0.4 mL

To administer 4 mg of intravenous morphine, 0.4 mL of the injection should be used.

Assuming complete dominance for both genes, the parents genotypes are bbEe and Bbee. Among the offpring, the Expected genotypes are: 1/4 BbEe, 1/4 Bbee, 1/4 bbEe, 1/4 bbee. And the Expected phenotypes are: 1/4 brown eyes and normal vision, 1/4  brown eyes and express extremenearsightedness, 1/4 blue eyes and normal vision, 1/4 blue eyes and express extremenearsightedness.

Complete dominance is the inheritance pattern in which the dominant allele can hide the expression of the recessive allele when both of them are together in heterozygous individuals. In these cases, only the dominant phenotype can be expressed.

In the exposed example, we will assume complete dominance for both genes.

Gene for eye color

Gene for extremenearsightedness

Available data:

- blue eyed (bb)

- normal vision (E-)

- his mother was affected (ee)

The fact that his mother was affected suggests the man is heterozygous because he received one recessive allele from his mother. So he has normal vision but is heterozygous for the trait, Ee.

- Brown eyes Bb

- Affected by extremenearsightedness, ee.

Man and woman's Genotypes

Cross: blue-eyed man with normal vision with and affected brown-eyed woman

Parentals) bbEe   x   Bbee

Gametes) bE bE be be  

                Be Be be be

Punnett square)    bE        bE        be        be

                    Be    BbEe   BbEe   Bbee   Bbee

                    Be    BbEe   BbEe   Bbee   Bbee

                    be    bbEe   bbEe    bbee   bbee

                    be    bbEe   bbEe    bbee   bbee

F1) Genotypes

4/16 = 1/4 = 25% of the progeny is expected to be dihybrid, BbEe

4/16 = 1/4 = 25% of the progeny is expected to be Bbee

4/16 = 1/4 = 25% of the progeny is expected to be bbEe

4/16 = 1/4 = 25% of the progeny is expected to be bbee

    Phenotype

Parents genotypes: bbEe and Bbee

Expected genotype: 1/4 BbEe, 1/4 Bbee, 1/4 bbEe, 1/4 bbee

Expected phenotype: 14 brown eyes (Bb) and normal vision (Ee), 1/4  brown eyes (Bb) and express extremenearsightedness (ee), 1/4 blue eyes (bb) and normal vision (Ee), 1/4 blue eyes (bb) and express extremenearsightedness (ee).

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Complete question:

A heterozygous brown eyed (B) woman marries a blue eyed (b) man.The woman has extremenearsightedness, a condition that required her to wear glasses at a very young age.

Nearsightedness is recessive.

The man has normal vision, but his mother had extremenear-sightedness.

Determine the parents’ genotypes. Then, show the Punnett square

Answer:

Explanation below

Explanation

It should be understood that respiration is the process whereby organisms exchange gases with their environments.

And the two types are aerobic and anaerobic respiration.

Aerobic respiration is the type of respiration that occurs in the presence of oxygen, while the anaerobic respiration is the type of respiration that occurs in the absence of oxygen.

The examples of organisms that are used in making alcohol and yoghurt are Sacharomyces cerevisae, which is yeast, and Lactobacilli spp respectively.

China instituted a "one child per couple" rule to help address overpopulation (Option D).

In conclusion, China instituted a "one child per couple" rule to help address overpopulation (Option D).

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Answer:

D. overpopulation

Explanation: Took the quick check

Answer:

solar energy

Explanation:

solar energy

Answer:

a

Explanation:

Invasive species can change the food web in an ecosystem by destroying or replacing native food sources. The invasive species may provide little to no food value for wildlife. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.

Answer: A. They can out compete native species for resources.

Answer:

C. By creating laws or traditions that regulate hunting and fishing

Explanation:

Wildlife resources refer to wild animals (terrestrial, aquatic etc) in their natural habitat. Wildlife is an integral part of our society, however, they are being overexploited by human activities.

According to the options in the question, one way to address the problem of over use of wildlife resources is by creating laws or traditions that regulate hunting and fishing. Laws that compel hunting and fishing, which are the means humans over use wildlife, will help bring the rate at which these resources are used.

For example, creating a law that prohibits hunting in certain areas will help preserve wildlife in that area because it is a punishable offence by the law to hunt. Hence, wildlife resources will be preserved.

Answer:

. By creating laws or traditions that regulate hunting and fishing

Explanation:

Answer:

Malleus

Explanation:

Malleus other words known as hammer is the bone connected to the eardrum

Answer:

Angiogenesis

Explanation:

Angiogenesis is one of the various stages of tumor formation. This process is initiated when tumor cells begins to divide spontaneously and uncontrollably.

To also ensure their continued survival, they induce blood vessels growth by allowing the secretion of various growth factors and proteins.

The new blood vessels growth ensures the supply of required nutrients and allow for the tumour expansion.

Answer:

An ecologist is a scientist who studies ecosystems

Explanation:

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