Which of the following would be a good example of an index fossil? *

A plant species that lived only in the Amazon Rainforest for 30 million years
A species of lizard found in the Sonoran Desert that lived for 3 million years
A species of dinosaur that lived across all of Pangaea for 50 million years
A species of fish that lived at the bottom of the Pacific Ocean for 150 million years

There are 12 hydrogen atoms on the product side of the equation to balance the hydrogens on the reactant side.

The comparison of the number of atoms of each element present on both sides of a chemical reaction is the only way to determine whether or not a chemical equation is balanced. In order to properly balance a chemical equation, it is imperative that the "it has to follow law of conservation of mass (mass on reactants side should be equal to mass on products side)" guideline be adhered to.

A chemical equation is said to be balanced when the same amount of atoms of each element can be found on both sides of the equation. Another way to look at this is to say that the mass of the reactants and the mass of the products are the same.

Learn more about balanced equation, here:

https://brainly.com/question/7181548

#SPJ2

The ability of hemoglobin to bind oxygen depends on its quaternary structure, which is the arrangement of subunits in a tetrameric structure.

Hemoglobin normally exists as a tetramer, consisting of two alpha and two beta subunits. Each subunit contains a heme group that can bind to an oxygen molecule. When oxygen binds to one heme group, the conformation of the hemoglobin molecule changes, making it easier for the other heme groups to bind oxygen.

In the case of the genetically engineered hemoglobin variants that primarily exist as dimers, their ability to bind oxygen may be impaired. Since they lack two subunits, the conformational change that occurs upon oxygen binding may not occur as efficiently, resulting in a decreased ability to bind oxygen.

Learn more about Hemoglobin

https://brainly.com/question/15011428

#SPJ4

Answer: Darwin studied the perserved remains of ancient organisms called Fossils.

Hope this helps!

Answer:

The correct answer is -

Parental genotypes: AO & BO

Children genotypes: AB, AO, BO, and OO

Explanation:

In the human blood group system, more than two types of alleles are present that lead to the existence of four blood groups in the human population.

Here, A and B alleles are co-dominant while the O allele is recessive to both A and B alleles in the ABO system.

The cross depicting the genotypes of children is

IA IO

IB    IAIB    IBIO

IO   IAIO   IOIO

In this cross, we get the same result as given in the question -

One parent has A and the other has B type blood while the children have all four types of blood groups One has Type A, one has Type B, one has Type AB, and the last has Type O. It is possible only when parents are heterozygous in their genotypes and not expressing codominance.

Developing molecular tools to visualize and control Rho GTPase signaling in living cells has been instrumental in elucidating the mechanisms of cytoskeletal reorganization and causal relationships between activation events in cell function.

The EdgeProps is a collection of MATLAB scripts divided into three folders corresponding to the three modules of the pipeline.

Learn more about EdgeProps here:

https://brainly.com/question/15071644

#SPJ4

Answer: Probability: 0%

Explanation:

Hardy-Weinberg establishes that the genetic composition of a population remains in equilibrium as long as no natural selection or other factors act and no mutations occur. This means that the children of this couple will inherit the genes of the parents.

The woman is phenotypically normal with no family history of PKU, this mean that probably there are no affected (recessive) alleles in her family. In an autosomal recessive disorder, both copies of the gene in each cell are recessive. Therefore, her genotype will be AA with A being the dominant and normal allele. As for the Irish man, his sister does have PKU, which means her genotype is aa. So, she must have received a defective allele from each parent. Then the parents' genotypes are both Aa (heterozygous, only one allele affected as they are healthy). So, we know that the Irish man does not have the disease (he can't be aa), but he could be Aa (having inherited a normal allele from one parent, and an affected one from the other parent) or AA (having inherited both normal alleles from each parent).

Then we have two possible punnetts square to do: AA (the Irish woman) and AA (he Irish man); or AA (woman) and Aa (man).

In the attached figure both punnetts squares are shown. The first punnett square (AA x AA) shows that 100% of the offspring will be AA (this means, the phenotypic ratio is also 100% not affected and non-carrier). The second punnett square (AA x Aa) shows that 50% will be AA (healthy and non-carrier) and 50% will be Aa (heterozygous, healthy and carrier) But since it is an autosomal recessive disease, a single affected allele is not enough to develop the disease. So in neither case is there a chance of having a child with PKU.

Answer:

Mitosis is the dividing of all other cells in the body. It is how a baby in the womb grows. Mitosis causes the number of chromosomes to double to 92 and then split in half back to 46. This process repeats constantly in the cells as the baby grows.

Explanation:

Normally, meiosis causes each parent to give 23 chromosomes to a pregnancy. When sperm fertilizes an egg, the union leads to a baby with 46 chromosomes.

Answer: Hypothalamic GnRH stimulates the gonadotroph to synthesize and release both FSH and LH which stimulate the gonads to produce sex steroid hormones and regulate germ cell function.

Image 4 in the diagram represents the tissue level of organization. Tissues are groups of similar cells that work together to perform a specific function. In image 3, we can see a small group of cells, which may represent a tissue at a very small scale. However, in image 4, we can see a larger group of cells creating layers, which is a characteristic of a tissue.

In higher levels of organization, tissues combine to form organs, and organs combine to form organ systems. For example, the heart is an organ that is part of the circulatory system. The circulatory system is an organ system that is responsible for the transportation of blood throughout the body.
Lastly, image 7 in the diagram represents the organism level of organization, which is the highest level of organization. At this level, all of the organ systems work together to maintain the functions of the entire organism, which in this case is a cat. Overall, the diagram shows the different levels of organization in living organisms, starting from the smallest unit of matter (atoms) to the largest scale of organization (organisms).

For more such questions on Tissues

https://brainly.com/question/12461686

#SPJ11

Plasma FSH (follicle-stimulating hormone) levels are essential in regulating the menstrual cycle and determining a woman's fertility. In comparing and contrasting the plasma FSH levels between Cindy, Elaine, and Hillary, several factors must be considered.

Firstly, it is important to note that FSH levels fluctuate throughout a woman's menstrual cycle. Therefore, the timing of the measurement is crucial in interpreting the results. Typically, FSH levels are highest in the follicular phase of the menstrual cycle, just before ovulation, and lowest in the luteal phase, after ovulation.

Cindy, Elaine, and Hillary are all female individuals with different ages and medical histories, which can significantly affect their FSH levels. FSH levels tend to increase as a woman ages, particularly after the age of 35. Therefore, it is essential to consider the age of each individual.

To know more about Plasma visit:-

https://brainly.com/question/31510917

#SPJ11

Answer:

1. Chloroplast

2. Cell wall

3. Vacuole

Environmental Impacts

With a hierarchy of prey and predators that control population growth, ecosystems are carefully balanced. Species that become extinct are removed from the food chain. Animals that consumed the recently extinct species must discover alternative food sources or risk going hungry.

The populations of other plants or animals may suffer as a result. Additionally, if a predator goes extinct, the population of its prey may increase, tipping the balance of nearby ecosystems.

Effects on People

Humans and endangered creatures must coexist in the same ecosystem. That implies that human existence will change if a species' population is declining. For instance, when the American bison population started to decline, people who depended on its meat or fur for warmth or trade suffered and had to turn to alternative sources of nutrition and revenue.

Economic Repercussions

The endangered honey bee is an illustration of how the economy is dependent on specific species. Bee numbers have decreased significantly in recent years, by more than 60% in the United States since 1947.

Bees pollinate a wide variety of plant species, including those that make up a large portion of the average person's diet. The U.S. Department of Agriculture values bee pollination highly, valuing it at billions of dollars annually to the economy.

Know more about endangered species at:

https://brainly.com/question/26265772

#SPJ4

Answer:

Explanation:

я не знаю

Answer:  The Cat, The cat has 230 bones and the most common cat behaviors include purring, grooming, kneading and climbing. The one functional adaptaton of the feline is its retractable claws, acute eyesight, and agility. Together, these adaptations enable cats to capture prey with great skill and efficiency. (My Answer)

Explanation: Edmentum Answer:

Black widow spiders have the ability to create and inject venom into their prey, which is a functional adaptation. The red hourglass marking on their body warns other organisms that they’re toxic, so this is a structural adaptation. These spiders spin and repair their webs. This action is a behavioral adaptation that helps them catch prey

Answer:

with??

Explanation:

Cell theory has 3 basic points: Cells are the basic unit of all living things. The tiniest living organism that is capable of carrying out all life's duties is the cell.

According to the unified cell theory, each living entity is made up of one or more cells, each cell is the building block of life, and new cells develop from existing cells. this idea benefited greatly by the contributions of Rudolf Virchow.

The G1/S checkpoint, the intra-S checkpoint, and the G2/M checkpoint are the three primary cell cycle checkpoints [60]. Cyclin-dependent kinases control how the cell cycle progresses through its many stages.

Learn more about DNA here:

https://brainly.com/question/264225

#SPJ1

Answer:

The correct answer is: D.carrying messages to other cells

Explanation:

Answer:

All of them, so

A, B, C and D

Answer:

\(all \: of \: the \: bases \: that \: can \: be \: present \: in \\ \: dna \: nucleotides.\)

Answer: both 1 and 2

Explanation: common sense

Both 1 and 2 are a characteristic of all mammals.

Characteristics of Mammals are:

Thus,  Both 1 and 2 are a characteristic of all mammals.

To learn more about Mammals click here:

https://brainly.com/question/10194338

The mean values of beak depth in each generation would be; First generation: 2.80 mm, Second generation: 3.00 mm, Third generation: 2.755 mm, Fourth generation: 2.725 mm, and Fifth generation: 2.76 mm.

The response of a trait to selection can be predicted using the breeder's equation; R = h² × S

Where R is the response to selection, h² is the narrow-sense heritability of the trait, and S is the selection differential, which is the difference between the mean of the selected individuals and the mean of entire population.

In this case, we are given the values of S for five successive generations, and we know that the heritability of beak depth is constant at 0.5. The starting mean for beak depth is 2.75 mm. We can use the breeder's equation to calculate the mean value of beak depth in each generation.

For the first generation, the selection differential is 0.1 mm. Plugging in the given values into the breeder's equation, we get;

R = 0.5 × 0.1 = 0.05

The response to selection is 0.05 mm, which is the change in the mean value of beak depth from the starting mean of 2.75 mm. Therefore, the mean value of beak depth in the first generation would be;

2.75 + 0.05 = 2.80 mm

For the second generation, the selection differential is 0.5 mm. Plugging in the given values into the breeder's equation, we get;

R = 0.5 × 0.5 = 0.25

The response to selection is 0.25 mm, so the mean value of beak depth in the second generation would be;

2.75 + 0.25 = 3.00 mm

For the third generation, the selection differential is 0.01 mm. Using the breeder's equation, we get;

R = 0.5 × 0.01 = 0.005

The response to selection is 0.005 mm, so the mean value of beak depth in the third generation would be;

2.75 + 0.005 = 2.755 mm

For the fourth generation, the selection differential is -0.05 mm. Since the mean value of breeding individuals is less than the population mean, this is called disruptive selection. Using the breeder's equation, we get;

R = 0.5 × (-0.05) = -0.025

The response to selection is negative, indicating that the mean value of beak depth in the population will decrease from the starting value. Therefore, the mean value of beak depth in the fourth generation would be;

2.75 - 0.025 = 2.725 mm

For the fifth generation, the selection differential is 0.02 mm. Using the breeder's equation, we get;

R = 0.5 × 0.02 = 0.01

The response to selection is 0.01 mm, so the mean value of beak depth in the fifth generation would be;

2.75 + 0.01 = 2.76 mm

To know more about beak depth here

https://brainly.com/question/13022064

#SPJ4

Answer:

The phylum platyhelminthes includes the organism like flatworms, earth worm and many other species. They play a major role in the marine, terrestrial and freshwater ecosystem. It contains a variety of nutrient sources.

Explanation:

They are of great importance from the times when there were no other organism.

Answer:

Air mass

Explanation:

Answer:

Air mass expansion would be correct.

Answer: genes nucleus asexual clones

Explanation:

Answer:

Theobroma

Hope this helps :)

Explication: Had to do a project about it

Answer:

cycle:

1. Attachment: A bacteriophage attaches to the surface of a bacterial cell.

2. Entry: The viral DNA is injected into the bacterium and integrates into the host chromosome.

3. Prophage: The integrated viral DNA is known as a prophage and is replicated along with the bacterial chromosome.

4. Replication: The prophage replicates along with the bacterial DNA during cell division.

5. Induction: A trigger, such as stress or UV radiation, causes the prophage to leave the bacterial chromosome and enter the lytic cycle.

6. Lytic cycle: The viral DNA begins replicating and producing new phages, which lyse the host cell and release new viruses.

7. Release: The newly produced phages are released into the environment to find other bacterial cells to infect.

Note: The lysogenic cycle can sometimes be followed by the lytic cycle, in which the virus uses the host cell to produce new viruses, ultimately leading to lysis of the host cell.

Answer:

True

Explanation:

Drip irrigation uses more water and is not helpful in sustaining water use.

Answer:

pollutants such as sulfur can lead to excess levels of acid in lakes and streams, and damage trees and forest soils; atmospheric nitrogen can reduce the biodiversity of plant communities and harm fish and other aquatic life; ozone damages tree leaves and negatively affects scenic vistas in protection...

Explanation:

hope this helps

good analogy

blood acts like a

train

when it reaches capillaries

oxygen gets off

carbon dioxide gets on

when you hear homeostasis think

temperature

body stays the same temperature

even if it's cold or hot outside

brain & nervous & body system use

"feedback loops"

when's it's cold

nervous system signals body to

construct blood vessels &

shiver

when it's hot

nervous system signals body to

dilate blood vessels &

sweat

http://www.pathwaymedicine.org/control-of-respiration

The life process that generates the raw materials and energy needed to sustain all other life processes is known as Metabolism.

Metabolism may be defined as a type of chemical process that takes place inside the body of living organisms in order to keep them alive. It includes repairing cells, digestion of foods, breathing, etc.

Metabolism is a type of life process that significantly generates the raw materials and energy that are needed in order to sustain all other life processes. This process introduces changes that make energy and the materials cells and organisms need to grow, reproduce and stay healthy.

There are two categories of metabolism: catabolism and anabolism. Catabolism is the breakdown of organic matter, and anabolism uses energy to construct components of cells, such as proteins and nucleic acids.

Therefore, the life process that generates the raw materials and energy needed to sustain all other life processes is known as Metabolism.

To learn more about Metabolism, refer to the link:

https://brainly.com/question/1490181

#SPJ5