What are two functions of gills and lungs?
A. To get rid of carbon dioxide
B. To carry nutrients
C. To take in oxygen
D. To break down nutrients

Natural selection is founded on three principles: most qualities are inherited inheritance, more children are born than can survive competition, and children with more desirable characteristics will survive and produce more offspring variation.

One of the four fundamental tenets of evolutionary theory, along with mutation, migration, and genetic drift, is natural selection. Populations that exhibit variety in features, such as colour, are subject to natural selection. Its core tenet is that individuals are more likely to reproduce when they possess a characteristic that makes them more likely to survive in a given environment than their counterparts. Four requirements must be met for natural selection to take place: reproduction, inheritance, variety in physical traits, and variation in the number of children produced by each person.

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Answer:

fats and oils.

Explanation:

You may wonder how the heck a large animal like a cow gets any energy from grass. The answer lies in these microbes. As they digest the cellulose by way of fermentation, their metabolic pathways produce chemicals called volatile fatty acids (VFAs) or fat sources (oilseeds, animal, and vegetable oils).

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Answer:

Carbohydrates

Explanation:

I took the test and this was the right answer

The phenotypic ratio of purple-flowered to white-flowered offspring will be 3:1. Hence 75% offsprings will be purple.

Genetics is the study of the genes, the genetic variation, and the heredity in the organisms. It is an important topic in biology because heredity is fundamental to organism evolution. In the nineteenth century, Gregor Mendel, a Moravian Augustinian monk working in Brno, was the first to do scientific study on genetics.

The study of genetics focuses on the effects of individual genes or groups of genes in health and disease. Understanding genetic variations and anomalies is critical for learning more about health promotion and disease prevention. In genetics, the phenotype is the set of observable traits or attributes of an organism. The term refers to the anatomy, developmental processes, biochemical and physiological characteristics, behaviour, and behavioural results of an organism.

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Explanation:

Cellular Metabolism

The living cells of every organism constantly use energy to survive and grow. Cells break down complex carbohydrates into simple sugars that the cell can use for energy. Muscle cells may consumer energy to build long muscle proteins from small amino acid molecules.

Because the water is so deep. There are no rooted plants to be found at the bottom of lakes because sunlight cannot penetrate that far.

Lakes obtain their water supply from three different sources: precipitation; rivers and streams; and underground water.

The size of lakes can range from very small to very large. They can be quite deep, or they can be only moderately so. Ponds are frequently used as a synonym for lakes that have depths of less than six or seven feet and support plant life on the bottom.

The changing of the seasons can bring about significant fluctuations in temperature for the lakes that are found in certain temperate regions.

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The statement which is true about the Krebs (citric acid) cycle and the Calvin cycle (light-independent) is: they both are carried out by enzymes located within an organelle matrix.

The Calvin cycle is a series of chemical events that converts carbon dioxide and hydrogen-carrier molecules into glucose. It is also referred to as the photosynthetic carbon reduction (PCR) cycle of photosynthesis, the dark reactions, the light-independent reactions, or the biosynthetic phase. Plants' stroma, the fluid-filled region of a chloroplast not shielded by thylakoid membranes, is where these processes take occur. These processes involve additional chemical steps that are applied to the byproducts of light-dependent reactions (ATP and NADPH). The Calvin cycle is present in all photosynthetic eukaryotes as well as a sizable number of photosynthetic bacteria.

The complete question is:

Which of the following statements is true about the Krebs (citric acid) cycle and the Calvin (light-independent) cycle?

A. They both result in a net production of ATP and NADH.

B. They both require a net input of ATP.

C. They both result in a release of oxygen.

D. They both take place within the cytoplasmic matrix.

E. They both are carried out by enzymes located within an organelle matrix.

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In a diploid organism, two alleles for a particular gene are expressed and interact to produce physical traits. A species' observable characteristics are referred to as its phenotype.

The genotype is the genetic composition of an organism, which includes both the alleles that are physically expressed and those that are not. Mendel's hybridization studies show how phenotype and genotype differ from one another. For instance, the diploid genotypes of the plants in the P, F1, and F2 generations are related to the phenotypes that Mendel observed in his crosses between pea plants with different features. We shall utilize seed color as an example, which was Mendel's second feature of study. Two alleles of a single gene control the color of seeds.

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An example of how poaching affects biodiversity is selling baby gorillas at high prices.

Poaching is the illegal trade and killing of wild animals. Some of the animals and plants are sold as trophies and "folk medicines", others as pets and houseplants. The level of poaching cannot be overstated, as there are more tigers in captivity than in the wild. Killing wildlife is bad for biodiversity. Illegal hunting and trafficking of animals.

Poaching was once done by poor farmers to make a living and supplement their meager diet. He opposed the hunting privileges of nobles and monarchs.

Poaching, hunting, illegal shooting, trapping or taking of fish or plants from private property or any place where such practices are expressly reserved or prohibited by law. Poaching is a major existential threat to many wildlife species worldwide and a major cause of biodiversity loss.

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Complete question :

Although it is against the law, people hunt and capture mountain gorillas in Africa. They sell the baby gorillas for large sums of money. This is an example of which factor that affects biodiversity?

A. Pollution

B. Nonnative Species

C. Habitat Destruction

D. Poaching

Types of data were researchers able to collect about the gray whale migrations:

Most grays migrate to forage in the Arctic during the summer. Meanwhile, the winter migration originates in the waters off Baja California, Mexico where they feed the newborn calves. The annual round trip is taken by more than 10,000 million.

The gray whale (Eschrichtius robustus) frequently migrates in large flocks along the west coast of North America. With a width of between 13 – 16 meters, these pauses often live in calm and warm waters as a haven from predators.

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Charles Darwin fue un naturalista inglés que publicó una de las obras científicas más influyentes en el mundo de la biología: “El origen de las especies”. En ella, asentó las bases de la evolución, un proceso que es posible gracias a lo que bautizó como selección natural.

Darwin tuvo ocasión de demostrar sus conocimientos geológicos al mes siguiente, cuando el Beagle alcanzó la costa argentina de Punta Alta. Allí, en un pequeño terraplén de unos seis metros de altura, desenterró fósiles de mamíferos extintos. Entre ellos, restos de perezosos y armadillos gigantes.

Answer:

CHARLES DARWIN

-viaje con el HMS Beagle

abandonó la escuela de medicina

-esperó 20 años para publicar su teoría innovadora sobre la evoluc

The most abundant and widespread organisms on earth are the Prokaryotes.

Prokaryotes are the single celled organisms and have distinct features than other multicellular living organisms on earth. They are an essential class of organism as they perform several functions like nutrient recycling etc to maintain a well balanced ecosystem.

They are also by far the most diverse group of organisms in both metabolic and natural adaptive manner. Prokaryotes are abundantly found on earth because of their innate ability to adapt themselves even in extreme harsh conditions which results in their easy survival over ages.

Prokaryotes consist of organisms like Bacteria, Cyanobacteria, Archaeans etc.

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Answer:

What are 5 major environmental problems suggest ways to protect the environment?

Biodiversity. Biodiversity is the most complex and vital feature of our planet. …

Water. Water pollution is a huge concern for us and our environment. …

Deforestation. We need plants and trees to survive. …

Pollution. …

Climate Change.

Explanation:

Fungi can be incredibly sophisticated multicellular organisms or single-celled critters.

They can be found in almost any location, but the majority of them prefer to dwell on land, primarily in soil or on plant matter, as opposed to the sea or fresh water.

The decomposers are a group that thrives in the soil or on dead plant matter and is crucial to the cycling of carbon and other elements. Some are parasites of plants that spread illnesses like canker, rust, scabs, and mildew.

Fungal diseases in crops can cause the farmer to lose a lot of money. A very small percentage of fungi can make animals sick. These include skin conditions that affect humans including athletes foot, ringworm, and thrush.

Therefore, Fungi can be incredibly sophisticated multicellular organisms or single-celled critters.

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The complete question is :

1.has positive and negative mating strands, 2. has erect fruiting body and 3.the first fungi to evolve, 4.lives in a varied habitat and exhibits all forms of nutrition. A. chytrid---------------------- and B. common mold-----------, C. sac fungi-------------------, D. club fungi------------------

Option A, The Young-Helmholtz theory proposes that B. there are three different types of color-sensitive cones in the eye that are sensitive to different wavelengths of light, which allows us to perceive a wide range of colors.

These cones contain pigments that respond to different parts of the visible spectrum, such as red, green and blue. This theory sensitive states that the sensitive brain interprets the relative stimulation of these cones as different colors. There are four different types of cones is not accurate, because the Young-Helmholtz theory states that there are three different types of cones. Retinal cells are excited by one color and inhibited by its complimentary color is not accurate either. The retinal cells are sensitive to different wavelengths sensitive of light and the brain interprets the relative stimulation of these cells as different colors. rod, not cone, vision accounts for our ability to detect fine visual detail is not accurate according to the Young-Helmholtz theory, which focuses on the role of the cones in color vision, not the rods. Rods are responsible sensitive for our ability to see in low light conditions and detect fine details in dim light.

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Answer:

Explanation:

Fertilizer

B Balanced due to the reduced combustion of fossil fuels would this model be altered in non-industrialized countries.

Emerging industrialised nations have a challenge. They must invest a sizable sum of money if they wish to keep up their industrialisation trend. Cities need to grow, transportation needs to be as effective as it can be, and new roads need to be built.

Based on nutrition, health, education, and literacy metrics, there is a lack of human resources. Economic vulnerability, as evidenced, for instance, by fluctuations in agricultural production, exports of commodities and services, and the proportion of the population that is displaced by natural disasters.

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The gamete cells contain 50% of the chromosomes found in the body cells of an organism after meiosis.

Meiosis is basically a type of cell division which occurs in the sexually reproducing organisms. This division is observed during the formation of gametes and results in the reduction of the chromosomes in the gametes.

The normal body cells in our body diploid in nature. This means that they contain two complete sets of chromosomes, that is, 23 pairs of chromosomes. When a gamete is formed due to meiotic division, only one half of the chromosome complement is passed on from the parent and therefore the germ cell will contain 50% of the chromosomes found in the body cells of an organism after meiosis.

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Answer: A. Homologous structures occur in each fossil

Explanation: source: trust me broski

(Actually though trust me)

Elevated low-density lipoprotein cholesterol is more likely to increase the risk of cardiovascular in men than in women

Men generally develop CVD at a younger age and have a higher risk of coronary heart disease (CHD) than women.

It appears that men's coping with stressful events may be less adaptive physiologically, behaviorally, and emotionally, contributing to their increased risk for CHD.

CVD is the leading cause of death worldwide, yet important differences exist between men and women

During a woman's fertile age, estrogens have been found to exert beneficial effects on the cardiovascular system (CVS), which often protects women from atherosclerosis during this time.

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The cone's mass as determined by the triple beam balance .(A) 543.0g is correct option.

The distant beam typically reads in 10 gramme increments, the front beam can read from 0 to 10 grammes, and the center beam typically reads in 100 gramme increments. The triple beam balance can be used to measure substances and measure mass directly from objects as well as find mass by difference for liquids.

Mass is measured carefully and accurately using an equipment or tool known as a triple beam balance. These instruments typically have a reading error or roundoff of 0.05 grammes.

The name of the instrument alludes to its three beams, of which the front beam is the smallest and lightest and the middle beam is the largest and longest. The far beam is of average size.

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Answer:

Yes.

Explanation:

Nucleotide has three parts

Sugar

Phosphate group

Nitrogenous base

The genotype of the F1 individuals in this cross is heterozygous, containing both the alleles for tallness and white flowers and the alleles for dwarfism and red flowers. The phenotype of the F1 individuals is tall plants with white flowers.

The dwarf, red snapdragon crossed with a plant homozygous for tallness and white flowers is an example of a monohybrid cross. A monohybrid cross is a type of genetic cross that only involves the inheritance of one trait, such as flower color and plant height. In this particular cross, the dwarf, red flower snapdragon is being crossed with a plant homozygous for tallness and white flowers.

The genotype of the F1 individuals in this cross will be heterozygous, meaning they will possess both the alleles for tallness and white flowers and the alleles for dwarfism and red flowers. The phenotype of the F1 individuals will be tall plants with white flowers. This is because the recessive alleles for dwarfism and red flowers will be masked by the dominant alleles for tallness and white flowers.

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Answer: Option (D) will be the answer.

(Please correct me if I am wrong.)

Answer: C) Does the cell have membrane-bound organelles?

Explanation: eukaryotes have a membrane bound nucleus while prokaryotes don’t.

hopefully it correct! it made more sense to me than the other ones :)

It lends credibility to the theory that all species descended from a common ancestor. The term "homology" refers to the belief that all living things have a common ancestry.

This is because homology asserts that many individuals have the same embryological origin as specific organ structures. This structure is functional in some, but not in others, indicating that it was handed down from a common ancestor to subsequent generations.

Natural selection, as we know, is an evolutionary process in which certain members of a species had characteristics in their bodies that were advantageous to the environment in which they lived.

These organisms survived and passed these structures on to their descendants. For this reason, we can say that the presence of homology supports the standard component of the theory of evolution by natural selection because it supports the hypothesis that species descend from a common ancestor.

These creatures survived and passed on these structures to their offspring. As a result, the presence of homology supports the standard component of natural selection theory since it supports the premise that species descend from a common ancestor.

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