On an evolutionary time-scale, two species that share a common ancestor from around 1 million years in the past are:a. Very closely relatedb. 125,643rd cousins 13,665 times removedc. very distant relatived. not related

Carrier proteins moving from low to high concentration requires the use of energy to transport substances. This is called active transport and uses transmembrane proteins, pumps and vesicles, which is cell membrane.

Active transport is the type of transport where molecules are transported using energy. This energy can be in the form of ATP or the energy released during co-transport. In active transport, the solute is transported against the concentration gradient, i.e., from lower to higher concentration.

Vesicles are the single membranous self-made structures. These are actually small spherical buds formed due to the pinching off of the cell membrane. They are actively involved in transport across various organelles of the cell.

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The correct asnwer is d, basal nuclei.

Parkinson's disease occurs due to the lower level of dopamine in brain. It causes unnecessary tremors that originate especially from the region called thalamus. Therefore, thalamus is the correct answer.

In Parkinson's disease the tremors are different from any other kind of tremors, they are especially known as essential tremors. It is the disorder that causes the rhythmic contraction of muscles in an uncontrolled way, causing difficulty to the person in performing simple tasks.

There are some possibilities that can cause Parkinson's disease such as - Mercury poisoning, anxiety disorder, any kind of brain disease. Even though, there are evidence that 60 - 80% of cases are due to sudden reduction in the dopamine producing cells.

Parkinson's can be diagnosed by observing the person's symptoms. A neurologist can give the most correct diagnosis for Parkinson's. It has tremors in many places of the body, but most commonly affected areas are- hand and fingers, mouth or tongue, legs.

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For Corinne to carry out a research that is as comprehensive as possible on the topic of gun control in the midwest, she should choose subjects who identify with different racial groups, since between the alternatives is the option with more variety of opinions. That's because all the

The study of the vital statistics of a population and how they change over time is referred to as Demography. it is of tremendous importance to the economy.

The compound CaCO3 is called calcium carbonate. Calcium carbonate is of great importance for coral reefs since skeletons of corals are mainly made of this compound.

Answer:

A and C

Explanation:

Lymph is a light yellow-coloured, mobile fluid connective tissue which drains into the lymphatic capillaries from the intracellular spaces. Functions: The lymph carries carbon dioxide and nitrogenous waste from tissues to the blood. Lymph protects the body by killing germs and fighting against infection.

To answer this question we need to analyze each available option. Sickle cells are a disease, such as sickle cell anemia. Giant platelets are a disorder, characterized by abnormally large platelets, low platelet count, and increased bruising or bleeding. A leukoerythroblastic picture is a set of symptoms used for diagnosis and can be caused by different pathologies. This leads us to the Platelet satellitism which is in fact an invitro phenomenon observed in peripheral blood smears from blood samples with EDTA anticoagulant.

Solution:

The Operon is a regulated transcription unit, present in bacteria. An operon contains regulatory DNA sequences, which act as binding sites for regulatory proteins that promote or inhibit gene transcription. In this way, they regulate the expression of genes to proteins.

It is made up of the following components:

A regulatory gene:

The regulatory gene encodes a regulatory protein, the repressor. The lac repressor, encoded by the lacI gene, is the regulatory protein of the lac operon.

An operator:

The operator is the region of DNA in the operon to which the regulatory protein binds.

A promoter:

The promoter is the DNA sequence in the operon recognized by DNA-dependent RNA polymerase. The initiation site for RNA synthesis is located immediately after the promoter.

Structural genes:

The operon contains one or more genes encoding inducible enzymes.

The answer to this question is letter b. habitat. It is where the organism lives and meets all the environmental factors that they need in order to survie.

We have to consider that capillaries are blood vessels where our blood can move throughout our whole bodies nourishing each tissue with oxygen, but also carrying other nutrients, such as glucose to perform metabolic processes, like cellular respiration, so we can say that capillaries both oxygen and reabsorb nutrients. This can be done because the cells after performing those processes, can send out those products present in the intracellular media outside the cells via vesicles done by the Golgi apparatus. Eventually, these materials will be conducted through specialized capillaries known as lymphatic vessels, suspended in a fluid known as lymph, which is a liquid our bodies produce to carry out these substances, such as proteins and fats, but also white blood cells. And in this metabolic process of nourishment, enzymes produced in the pancreas but also in the small intestine, such as lactase, and sucrase will be crucial to catabolize the aliments that will give start to these set of reactions. This can be graphically represented as the following picture does, especially focusing in the stomach, the pancreas, and the small digestive intestine:

Answer: they can smell blood easily

Explanation:

Answer:

Sharks are able to smell blood and can smell a bleeding person or fish easier.

Diagram A: Passive transport

Diagram B: Equilibrium

Diagram C: Active transport

Diagram D: Equilibrium

Diagram E: Active transport

Diagram F: Passive transport

Passive transport: The molecules go through the membrane from a place of higher concentration to a place of lower concentration according to the second law of thermodynamics, without the need to consume energy, until the system reaches the equilibrium.

Active transport: The molecules go through the membrane against the concentration gradient, with an energy cost to the cell.

Equilibrium: It is not static but dynamic, so some molecules may go through the membrane in both directions, but the result will be the same concentration in both sides of it.

Answer:

Photosynthesis is the process by which green plants trap light energy using chlorophyll (green pigment) in their chloroplast to make food.

Explanation:

All the material necessary for Photosynthesis to occur are acquired by: active transport to absorb water into the roots, this water later travels up the xylem into the leaves due to the transpirational pull.

The Carbon Dioxide diffuses into the stoma (pores on the backside of the leaves) while oxygen diffuses out as a by-product.

There are two stages of Photosynthesis:

Light dependent stage:

In this stage, the water(H2O) that is present in the leaves are split apart by the light energy that is trapped by the chlorophyll and Oxygen leaves as by-product.

equation: 2H2O(l) --> 2H2(g) + O2(g)

Light independent stage:

In this stage the Hydrogen from the water combines with Carbon Dioxide from the atmosphere to produce glucose.

equation: 6CO2 + 6H2O --> C6H12O6 + 6O2

The plant can then use the glucose to repair its cells or for respiration and converts the rest into starch for storage.

We have to consider that female individuals are represented by a circle, while males with a square. When these forms are shaded, what's indicated, is that they express a particular trait of consideration, which usually is genotypically represented by two recessive alleles in females, and only one in males (due to the corresponding inherited chromosomes: males have only one X chromosome, while women have two of them).

In this case, then, the genotype of the individual B in the first generation is XBXb, since only with this female genotype, the given offspring is reached.

In the Punnet square, we can see how with the mother's genotype being XBXb, there's an offspring like the exercise tell us, being green circles and squares. the healthy ones, and red circles and squares the one that has the disease.

The type of natural selection that a single average phenotype is favored is the stabilizing slection (d), since an single average phenotype is favored being the individual trait the most present in the population.

The genetic (b) diversity is the variety of genes or inheritable characteristics that are present in a population.

DNA is made up of monomers called nucleotides. The nucleotides combine to form a polynucleotide that result to the DNA. It is a nucleic acid responsible for the encoding of information needed by the cells to make a protein.

Vitamin A toxicity can cause these effects , she might be taking overdose of vitamin A.

Vitamin A toxicity condition may be acute or chronic. Acute toxicity occurs after consuming large amounts of vitamin A over a short period of time this may effect fetus growth during pregnancy .

If any one is pregnant they are advised to avoid vitamin A supplement has it effects babies growth inside the womb. Too much of vitamin A in the form of retinol may increase the risk of birth defects in your baby. I can have a adverse effect on growth of fetus and can cause cognitive defect in babies .

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This example is a case of directional selection, a type of natural selection.

Klinefelter’s syndrome and Turner’s syndrome are examples of chromosomal disorders in adolescence.

What is Klinefelter’s syndrome and Turner’s syndrome?

Klinefelter’s syndrome: a genetic condition that affects males. It isn’t usually diagnosed until adulthood. This syndrome affects testicle growth, which results in smaller testicles, leading to lower formation of testosterone.  Klinefelter’s syndrome puts men at higher risk of breast cancer/ other cancers, problems with blood vessels, type 2 diabetes and osteoporosis.

This syndrome occurs due to an extra X chromosome in cells.  

Turner’s syndrome:  this condition affects only females. This syndrome is caused due to the absence/ partial absence of one X chromosome. It can cause many medical and development issues that include heart defects, short height and failure in developing ovaries.

Therefore, Klinefelter’s syndrome and Turner’s syndrome are examples of chromosomal disorders.

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The correct option is C. "Sprouting seeds and growing roots can cause rocks to break." When seeds sprout and their roots start to develop, they start a complex chemical process. This process along with their physical increase is capable of weathering, specially if we consider this in trees which have deep roots.

Answer

C. feed on algae, no true arms, have 5 layers of tube feet

Explanation

The

The integumentary system is made up different layers such as the epidermis, dermis and hypodermic which comprises of cells that differentiates them from each other.

The integumentary system is the largest viseral system that consists of the skin and its derivatives such as the hair and nails.

The integumentary system is made up of the following layers such as:

The role that the skin plays in the maintenance of homeostasis is that is contains immune cells in its epidermis that helps to fight against infection.

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The  genotypes that will fill up the pedigree chart are:

I - Dd

II- Dd, dd, Dd

III- dd, Dd, dd

A pedigree chart is a chart that shows how traits or characters are inherited from parents to offspring.

The given pedigree chart shows the inheritance pattern of an inheritance of a rare, autosomal dominant condition.

The inheritance pattern is as follows;

F1 generation, Parents 1:

4.  Dd fills the gap because the condition is heterozygous

II- Dd, dd, Dd fill in the gap, because the conditions are heterozygous, h0mozygous and heterozygous.

III- dd, Dd, dd fill in the gap, because the conditions are h0mozygous, heterozygous, and h0mozygous.

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DNA replication is the process by which new copies of DNA are produced, and it normally occurs prior to cell division.

DNA is made of two complementary chains or strands, and during replication, each of these strands is used as a template for the synthesis of a new strand. This means that each molecule of DNA produced in replication has one "old" strand and one "new" strand, and is because of this that replication is considered a semi-conservative process.

Given that DNA has a double helix structure, this helix must be unwound to allow replication to occur. This unwinding is performed by an enzyme called helicase, and after that, the DNA polymerase proceeds to add the complementary nucleotides to each DNA strand.

Cardiorespiritary assesment result

The problem calls for an example in which two different organisms help each other to evade a predator.

The answer is commensalism

Explanation:

-Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected.

-One species typically uses the other for a purpose other than food.

-In this case frog population benefits (uses the aquatic plant to attract it´s own food) while the plant is not affected.

Since the cell membrane has a very important role in nutrient uptake from the environment, option (1) is the the correct option. Therefore cell membrane is very important in regulating (controlling) the flow of simple sugars into or out of the cell.