Answer:
circulatory
Explanation:
Heart is only responsible for generating the pumping force needed to supply blood to each and every corner of the body. As heart is part of circulatory system. The answer is Circulatory system.
A function of chloroplasts in plant cells is to:
A. absorb water.
B. fold proteins:
C. make carbohydrates.
D. store wastes.
Answer:
A
Explanation:
What are the two main functions of chloroplasts? are to produce food (glucose) and to store food energy.
please answer this for me
the answer is D !!!!!!!
Answer:
maco shark
Explanation:
It is a fast speed-swimming shark that has been called “the peregrine falcon of the sharks” in allusion to the fastest bird in the world. It is considered an animal dangerous to humans because of the speed which can attack and its ability to jump into the fishing boats.
describe the likely properties of SH25 that enable it to reach the SR25a receptor in the cytoplasm of target cells?
Why is there a higher rate of skin cancer in Australia than in other
parts of the world?
Answer:
In Austrailia there is the highest rate of skin cancer because there is so much sunlight and most austalians have the wrong skin type for thier environment meaning people with pale skin get burnt more easily
Explanation:
Australia has a high rate of skin cancer because there's something different about the sunlight in Australia, and most people in Australia have skin that is easily damaged by light from the sun. Light carries energy that can make materials change. Therefore, Australia has a high rate of skin cancer because the ozone layer is damaged by the energy carried from the UV Light, being absorbed by the ozone and damaging allowing that light to transmit through and damage the genetic material of those individuals with lower levels of melanin.
Which question can be answered by science?

A. Should we conserve water?
B. Does this medicine reduce fevers?
C. Which projects should be funded?
D. Is it right to recycle?
Answer: B. Does this medicine reduce fevers?
Explanation: This is because you can run experiments and use the scientific method to answer your question.
Answer:
B
Explanation:
I think A, B and D can be answered in terms of science but I would say B is the answer because B only can be answered in terms of science. You can't give another answer for it like A and D
Meiosis is called reduction division because
It reduces the number of daughter cells to two
It reduces the number of divisions required to make gametes.
It reduces the size of the daughter cells
It reduces the chromosome number by half
Select the statements that are true. Question 1 options: CO2 and O2 are water-soluble molecules that diffuse freely across cell membranes. The differences in permeability between artificial lipid bilayers and cell membranes arise from variations in phospholipid content. Transporters are similar to channels, except that they are larger, allowing folded proteins as well as smaller organic molecules to pass through them. Cells expend energy in the form of ATP hydrolysis so as to maintain ion concentrations that differ from those found outside the cell.
Answer:
CO2 and O2 are water-soluble molecules that diffuse freely across cell membranes.
Cells expend energy in the form of ATP hydrolysis so as to maintain ion concentrations that differ from those found outside the cell.
Explanation:
CO2 and O2 are highly soluble molecules in water due to their polarizability and their ability to react with water molecules and form new compounds. CO2 is 30 times more soluble in water than oxygen, which also has a high solubility. This ability allows these two molecules to diffuse freely across cell membranes.
Cells promote hydrolysis, that is, the breakdown of ATP molecules when they need to expend energy for any metabolic process, especially when they need to maintain a balance between ion concentrations inside and outside the cell. This is because ATP is a highly energetic molecule and its breakdown promotes energy for the cell to use in its activities.
Some tortoises that feed on grasses were observed on an island. Some years later, an environmental
change caused the grasses to grow a bit higher off the ground. What evolutionary feature will you
expect to see in the tortoises on the island?
A. The tortoises will develop longer necks.
B. The tortoises will develop thicker shells.
C. The tortoises will develop longer tails.
D. The tortoises will develop thicker tongues.
Answer:
A. The tortoises will develop longer necks.
Explanation:
Answer:
A
Explanation:
trust
What are the raw materials that are needed for photosynthesis?
A. glucose and oxygen
B. water and glucose
C. carbon dioxide and water
Answer:
C. carbon dioxide and water
Explanation:
The raw materials that are needed for photosynthesis are carbon dioxide and water. So, option (C) is correct answer.
Should people be allowed to use gene therapy to enhance basic human traits such as height intelligence or athletic ability?
Answer:
no, of course not
Explanation:
Would you use drugs to gain a competitive advantage in sports? No, its against the rules and also unethical. It's not healthy. You've seen Jurassic Park right? It would lead to ruin.
Describe how the lizard population is changing
Answer:
Each time lizards colonized an island, they evolved into many of the same forms. .Other lizards adapted to life among the thin branches lower down on the trees, evolving short legs that help them hug their narrow perches. Still other lizards adapted to living in grass and shrubs, evolving long tails and slender trunks.Lizards are low on the food chain. Providing protection from their natural predators ensures their continued existence. Plant bushy perennials, create a rock or brush pile or use man-made items like stacks of bricks or pipes.
An allele whose trait only shows up when no dominant allele is present
hidden allele
dominant allele
present allele
recessive allele

The picture above shows onion root cells in various stages of mitosis.
The arrow is pointing to a cell in -
Answer:
Anaphase.
Explanation:
You can see the separation happening. This is anaphase.
Hope this is correct, good luck on your studies.
John is in his forties and his blood pressure reading shows consistently 160/100 mm of Hg. Name the disease. Mention any four reasons for such a condition?
Answer:
Stage 2 hypertension
Explanation:
Hypertension is a body circulatory system condition whereby the pressure of the blood vessels are raised persistently. The heart pumps blood to the different organs of the body through the blood vessels, each time it beats
The normal blood pressure in the vessel = 90/60 mmHg to 120/80 mmHg
The blood pressure of a prehypertension person or person at risk of having hypertension = 120-139/80-89 mmHg
The blood pressure at Stage 1 hypertension = 140/90-99 mmHg
The blood pressure at Stage 2 hypertension = 160/100 mmHg.
The variable your measuring during an experiment would be the?
where are 70s type of ribosomes found in eukaryotic cells.
What is a gene? O the different forms of a trait a segment of DNA that is the basic unit of heredity O the appearance or characteristics that are seen in an organism an organism's allele combination 0
Answer:
a gene is the different forms of a trait a segment of DNA that is the basic unit of heredity
Explanation:
Which graph represents selection that may lead to reduced variation
in a population?
The frequency graph represents selection that may lead to reduced variation in a population.
Hormones are chemical molecules produced by endocrine glandsOne such endocrine gland is the thyroid gland, synthesizes the thormone, which in tur the heart musclesWhich statements describe the probable reason for the function of the hormone role
Answer:
Topic Overview. The thyroid gland uses iodine from food to make two thyroid hormones: triiodothyronine (T3) and thyroxine (T4). It also stores these thyroid hormones and releases them as they are needed.
Explanation:
Topic Overview. The thyroid gland uses iodine from food to make two thyroid hormones: triiodothyronine (T3) and thyroxine (T4). It also stores these thyroid hormones and releases them as they are needed.
Identify the statement that describes the imperfection of natural selection. Identify the statement that describes the imperfection of natural selection. Natural selection has not had sufficient time to create the optimal design in each case but will do so given enough time. Natural selection is generally limited to modifying structures that were present in previous generations and in previous species. In many cases, phenotype is not merely determined by genotype but by the environment as well. Though we may not consider the fit between the current skeletal arrangements and their functions excellent, we should not doubt that natural selection ultimately produces the best design.
Answer:
Variability was seen as imperfection, so natural selection could only eliminate the inferior and imperfect, not giving rise to new things, new species.
:
¿Qué rama de la morfología estudia la forma y la estructura de los huesos?
Help me plsssss!!!!!
Answer:
b
Explanation:
Mendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate to produce an F2 generation. The results were as follows: 6,022 yellow and 2,001 green (8,023 total). Which of the following statements correctly describes the relationship of the allele for green soods to the allele for yellow seeds? A. The green allele is dominant to the yellow allele B. The two alleles exhibit incomplete dominance C. The green alicle is recessive to the yellow allele D. The two alleles are codominant
Answer:
C. The green allele is recessive to the yellow allele
Explanation:
Complete dominance occurs when one gene variant or allele referred to as the 'dominant allele' completely masks the expression of another allele referred to as the 'recessive allele' in heterozygous individuals, i.e., in individuals carrying one copy of the dominant allele and one copy of the recessive allele for a particular locus/gene (whereas homo-zygous individuals carry the same alleles for a given locus/gene). Mendel crossed pure lines of pea plants, i.e., homo-zygous lines for different traits such as seed color (yellow and green) and seed shape (round and wrinkled). In this case, the parental cross was YY x yy, where the 'Y' allele is dominant and encodes for yellow seed color, and the 'y' allele is recessive and encodes for green seed color. From this cross, Mendel obtained a hybrid F1 (i.e., all progeny was heterozygous with genotype Yy). An expected 3:1 ratio as observed in this case (6,022 yellow and 2,001 green seed >> 3:1 ratio) is characteristic of the progeny that results from mating between F1 heterozygous parents, where each parent has one dominant allele and one recessive allele, i.e., F1 parental cross: Yy x Yy >> F2: 1/4 YY (yellow color); 1/2 Yy (yellow color); 1/4 (green color) >> 3:1 ratio of yellow to green seeds.
los derechos sexuales son iguales a los reproductivos? porfa help
Your senior thesis project involves working out the taxonomy of Florida skinks. To accomplish this you examine skink specimens for morphological differences compare nucleotide and amino acid sequences and observe the skinks reproductive behavior and habitat types. Once you have completed the taxonomy and written the thesis you give it to your professor for comments. She tells you that you did a great job and should try to get your work published. However she suggests you indicate in the introduction what species concepts you used to make your classifications. What statement would you add
Answer:
I will add the following statement:
Taxonomic determinations were made based on the general lineage species concept.
Explanation:
Taxonomic determinations show inferred evolutionary relationships in the form of multiple branching lineages connected by nodes. So, the sequences can easily be identified at the end of branches. And these taxonomic determinations were made based on the general lineage species concept.
Hence, I will add the following statement:
Taxonomic determinations were made based on the general lineage species concept.
A biology teacher asks his class to make models of a plant cell, an animal cell, and a bacterial cell. Aside from cytoplasm and the cell membrane which other cell structure will the students need to make all three models?
A. Ribosome
B. Nucleus
C. Golgi Apparatus
D. Chloroplast
E. Cell wall
La polidactilia en la especie humana se debe a un alelo dominante. Entre Francisco y Martha, ambos abuelos de Santiago, uno de ellos tenía polidactilia, sin embargo Juan su hijo (papá de Santiago) nació normal. A pesar de ello Santiago es polidactílico. La explicación a esta situación es que
Answer:
Abuelo/a con polidactilia heterocigoto, PpAbuelo/a normal, ppJuan normal, ppEsposa de Juan con polidactilia, PP o PpSantiago con polidactilia, PpExplanation:
Datos disponibles:
Polidactilia es causada por un alelo dominante, P.El alelo recesivo p produce numero normal de dedos.Francisco y Martha → Abuelos → uno de ellos con polidactiliaJuan → Hijo → Normal, ppSantiago → Nieto → PolidactílicoUno de los padres, ya sea Francisco o Martha, es polidactílico, lo que implica que ésta persona tiene, por lo menos, un allelo dominante en su genotipo, P- (El simbolo "-" esta representando un alelo dominante o uno recesivo).
Si Juan es normal, entonces su genotipo es pp, lo que significa que recibió un alelo recesivo de su padre y otro de su madre. Es decir que el parental policactílico es heterocigota, de forma que pudo heredarle un alelo recesivo a Juan. El otro parental probablemente sea normal, pp, pudiendo solo heredarle a Juan el alelo recesivo.
Entonces, uno de los padres tiene genotipo Pp (heterocigota) y el otro pp (homocigota recesivo).
Juan es norma, pp.
Santiago, hijo de Juan, es polidactílico, lo que implica que lleva en su genotipo por lo menos un alelo dominante, P. Pero Juan solo pudo heredarle un alelo recesivo, p. Por lo tanto, Santiago es heterocigota para la característica, Pp, y heredó el alelo dominante de su madre, que puede ser homcigota dominante PP o heterocigota Pp.
Supongamos que Francisco es polidactílico y Martha normal.
1º Cruza: Francisco x Martha
Parentales) Pp x pp
Gametas) P p p p
F1) 1/2 = 50% Pp
1/2 = 50% pp → Juan
2º Cruza: Juan x Esposa (opción uno: esposa homocigota dominante)
Parentales) pp x PP
Gametas) p p P P
F2) 4/4 = 100% Pp → Santiago
2º Cruza: Juan x Esposa (opción dos: esposa heterocigota)
Parentales) pp x Pp
Gametas) p p P p
F2) 1/2 = 50% Pp → Santiago
1/2 = 50% pp
Which statement is a testable scientific hypothesis? A. Fern plants grow faster in moist soil than in dry soil. B. All people at the meeting agreed that it was time for lunch. c. Careful analysis shows that cats are nicer house pets than dogs. D. Classical music is the most important kind of music.
Answer:
A
Explanation:
They tested it by planting fern plants in both moist and dry soil
The pancreas is an organ connected to the digestive tract of humans by a
duct (tube) through which digestive enzymes flow. These enzymes are
important to the digestive system because they
Answer: The enzymes are important to the digestive system because they help in BREAKING DOWN of food substances that contains fat, carbohydrates and proteins.
Explanation:
In the process of digestion, several substances are secreted into the duodenum which is the first part of the small intestine. The pancreas, through the pancreatic duct, secretes pancreatic juice. This juice contains several digestive enzymes which include:
--> Amylopsin- This helps in the breaking down of starch( CARBOHYDRATES) to maltose.
--> trypsin: this is a protease that helps in the breaking down of PROTEIN into polypeptide.
--> Lipase: This helps in the breaking down of FAT to carboxylic acids and glycerol.
All the above enzymes of the pancreatic juice require an alkaline medium to work in. This is provided by the bile which is secreted in the fall bladder.
which of the following is the best definition of a saturated fatty acid
Answer:
A saturated fatty acid is a basic unit of lipid that consists of only single carbon to carbon bonds. ... Saturated fatty acids are solid in room temperature(animal fats) and unsaturated fatty acids are liquid in room temperature(oils/plant fats)
Explanation:
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