If the light-independent reaction can run without light, why does oxygen production (and presumably glucose production) stop?

Answer

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

Explanation

The

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: they can smell blood easily

Explanation:

Answer:

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

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.

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.

Correct options are:

b. The lynx population is k-selected.

d. The lynx preying on the hares is a density dependent factor for both population

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.

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.

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.

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.

All the choices may be useful when collecting and recording scientific data. Drawing was used by scientist to record and communicate their efforts in an experiment for centuries. A tape recorder is being used to record the data collected through interviews. Lab notebook is used by researchers to document their hypothesis, experiments, as well as their analysis. A data table are used for organization of all the data collected to be used for experimentation.

Answer - Option D - I,II, II, and IV

Answer:

A. Tall buildings and D. high-density population

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

Plants have the capacity to adapt itself for survival. They develop these characteristics in order for them to survive.

1. flower morphology - Flowers have this feature that aid them to produce seeds and grow new plants. Their parts serves this purposes specifically their petals and nectar so that insects will be attracted to visit. Insects serves as a way to transport pollen to different flowers to produce seeds.

2. coevolution among flowers and their pollinators - Vascular plants make flower with these kind of nectar to attract insects to visit them. These insects will transport the pollen for pollination to make seeds. These is a reciprocal change in different plants that affect their interaction.

3. fruit morphology -

The correct option is d: sunlight is travelling through less air at noon than at sunset.

-The light from the Sun is really made up of all the colors of the rainbow.Blue light waves are shorter than light waves of any other color. Sunlight is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves.

-When the Sun is lower in the sky, sunlight goes through more of the atmosphere. The blue light is scattered so much that the reds and yellows pass through to your eyes.

A is not true; dust is present during the day and sunset too. Dust, pollution, and haze in the daytime can make the sky look grayish or even white, and sunsets look less colorful.

B is not true, sun´s heat does not "clean the air".

C is false, at sunset, sunlight goes through more of the air (or atomosphere) not at noon

Operons can be regulated by repressors or by activators.

A repressor binds to the operator to prevent the transcription of the genes in the operon, while activators bind to the operons to activate the transcription of the genes.

When an operon is expressed constitutively (this means, the default is that the operon expresses its genes), operons are repressible (can be stopped), and this can happen by adding a repressor (negative repression) or by removing the activator (positive repression).

An example of a repressible operon is the trp operon, which synthesizes tryptophan, an amino acid. It is usually transcribed until there is enough tryptophan and the repressor binds to the operon.

When an operon is expressed just under certain circumstances, is an inducible operon (can be activated), and this happens by removing the repressor (negative induction) or by adding an activator (positive induction)

An example of an inducible operon is the lac operon, involved in the metabolism of lactose, where the transcription occurs only when lactose is present, which removes the repressor and allows the transcription of the enzymes.

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

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  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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The continuous development theory sees our development as a cumulative process with gradual changes, for example: children become more skilfull in talking as they get taller, while discontinous development theory sees our development as taking place in stages, for example: the changes have a abrupt sucession, the children become more skilfull in a specific stage or age. Is possible to see they both a partially correct, bacause the development is a complex process that have various moments, they can happen in abrupt circumstances or in really gradual process. In a bird we see the gradual development for learning, we can see a more abrupt change in other animals that is ralated more to the age than the grown in time and force of the organism.

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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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 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 correct answer is the letter D. All of these choices are correct

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

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.

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.