The genotype for being a red flower is RR, and the genotype for being a white flower is WW. If the colour of the flower is an example of incomplete dominance, use Punnet squares to show the ratio of the phenotypes in the F1 and F2 generations if you cross a red and a white flower.

The receptor cells for vision are located in the retina of the eyes and are called rods and cones.

Receptor cells are proteins found either inside a cell or on its surface which receive a signal.

The two primary photoreceptor cells are rods and cones and they  contribute to the information used by the visual system to form a representation of the sight.

They are found in the retina of the eye.

Therefore, the receptor cells for vision are located in the retina of the eyes and are called rods and cones.

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The blood vessel that is found in the anterior-medial thigh is the femoral artery.

The femoral artery is a  major blood vessel that transports blood from the abdomen to the lower limbs.

The femoral artery is fundamental because it transports high volumes of oxygen-rich blood.

In conclusion, the blood vessel that is found in the anterior-medial thigh is the femoral artery.

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The matching of the structure of proteins is as follows:

Thus, the correct option is A.

Proteins may be defined as intrinsically appearing, a remarkably complicated substance that consists of amino acid residues united by peptide bonds.

The primary structure of the protein is so simple and it looks like a linear chain of the polypeptide. The secondary structure of proteins consists of alpha-helix and beta-pleated sheet that involves the twisted form of polypeptide chains.

The tertiary structure of the protein is more complicated as compared to secondary and primary. This structure emerges due to the constant folding of polypeptide chains.

Therefore, it is well described above.

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Some common, underlying predisposition, probably at least partly genetically based, leads to anxiety disorders in men and to somatization disorder in women.

Anxiety symptoms can manifest on a physical level, such as a feeling of tightness in the chest and tremors, or on an emotional level, such as the presence of negative thoughts, worry, insecurity or fear, for example, and usually several symptoms appear at the same time.

In this case, women are twice as likely to develop anxiety as men because the cultural issue, of activities that are left to the care of the woman: care for the house, with the children, with the family, regardless of whether she works or not

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Underneath the right side of the liver, the gallbladder is a pear-shaped organ.

Its primary function is to gather and concentrate bile, a digestive fluid made by the liver. The gallbladder is where bile is kept after the liver produces it. The gallbladder receives a signal from the stomach when you eat. Bile is released from the gallbladder when it contracts, and it travels through the gut via the major common duct. Bile combines with the food there and aids in digestion.

When the gallbladder is removed from a healthy person, there are rarely any obvious health or digestive issues, though there is a slight chance of diarrhea and fat malabsorption.

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Answer:

Explanation:

Cells divide and reproduce in two ways, mitosis and meiosis.

Mitosis results in two identical daughter cells, whereas meiosis results in four cells.

Keys differences and similarities between the two types of cell division.

                                             Mitosis                  Meiosis

cells created:          two daughter cells      four daughter cells                                                          

Ploidy Creates diploid daughter cells Creates haploid daughter cells

Genetics  Daughter cells are                 Daughter cells are  .                                                                                 .                      genetically identical                  genetically different

Why is there a meiosis II but not mitosis II?

Meiosis II is generally regarded as being very similar to mitosis, except for the presence of two parent cells, instead of only one. In both meiosis I and II, cytokinesis occurs, and there are two daughter cells per parent cell.

Regarding the factors of true labor, the the fetal pituitary releases oxytocin in response to estrogens.

It should be noted that oxytocin means a hormone that is involved in childbirth. It is associated with trust and empathy.

In this case, regarding the the factors of true labor, the the fetal pituitary releases oxytocin in response to estrogens.

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The cross between parent plants if one is heterozygous for yellow pods and the other is homzygous for green pods - Yy yy., i.e., option A.

The occurrence of different types of alleles is referred to as heterozygous condition.

A heterozygous genotype may consist of one normal allele and one mutated allele, or two distinct mutated alleles.

The missing options of the question are:

The cross between parent plants if one is heterozygous for yellow pods and the other is homzygous for green pods - Yy yy.

Thus, the correct option is A.

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Answer: Yy’ yy

Explanation:

because I said so

Answer:

A...because the earth is round therefore the sun cannot hit the same places

Answer:

D

Explanation:

Undigested food is not transported by the human circulatory system. Hence, option D is correct.

The system which contains the heart, blood vessels, and blood is called the circulatory system. There are three types of circulation that take place in the body and that is systemic, coronary, and pulmonary circulation.

The heart is a muscular organ, that pumps blood in the body. Blood vessels carry blood from the heart to tissues or tissues to the heart. Blood is a fluid, which flows inside the blood vessels.

The main function of this system is to transport water, nutrients, digested food, oxygen, carbon-di-oxide, minerals, and excretory products in the entire body through blood. It does not transport undigested food. Hence, option D is correct.

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Answer:

femur I am pretty sure. The skull sheilds your brain, your ribs for your heart and lungs. backbone spine

Explanation:

Answer:

The insects belong to the same species

Answer:

The insects are the same species perhaps.

Explanation:

Answer:

Explanation:

hi!

I think it is A

terrestial animals are animals that live on land ...it could be B but terrestrial animals are not only found on islands and A days they crawl in the GROUND

if you ask me I think it is tricky question on its own

hope it helps

Answer:

It is they are only found in the center of the island

Explanation:

A chamber within a bone normally filled with air is a sinus

A sinus is a sac or cavity in an organ or tissue, or an abnormal cavity formed as a result of the destruction of tissues.

Sinus also refers to paranasal sinuses, which are air cavities in the cranial bones, near the nose and connecting to it.

Some individuals have four paired cavities found in the cranial bone or skull.

Thus, sinus is a chamber within a bone normally filled with air.

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NADH and FADH2 cycle is responsible for the production of small amount of energy in the form of ATP.

FADH2 and NADH are created through reduction-oxidation reactions in the Krebs cycle. This cycle produces small amounts of energy in the form of adenosine triphosphate (ATP), and also responsible for the production of compounds i.e. FADH2 and NADH. NADH produces 3 ATP whereas FADH2 produces 2 ATP molecules

So we can conclude that NADH and FADH2 cycle is responsible for the production of small amount of energy in the form of ATP.

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Pulmonary edema and impaired ventilation occur during cardiogenic shock.

Cardiogenic shock is a type of shock that occurs when the heart is unable to pump enough blood that would be enough for the whole body.

The clinical manifestations of cardiogenic shock include:

Pulmonary edema is the accumulation of fluid in the lungs while impaired ventilation which is unregulated intake and removal of oxygen and carbondioxide respectively from the body.

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The effect is that Frank's 10% sucrose bag will be heavier than that of others.

Water molecules move from the region of lower solute concentration to the region of higher solute concentration.

Thus, water will continue to enter into a 10% sucrose bad dropped in a beaker of water until an equilibrium is established between the 2 media.

This means that the longer the bag stays in the beater containing water, the more the water will enter, and the heavier it will weigh.

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Answer: A. Krebs cycle

The process by which photoreceptors become activated when the photopigments within the discs of the cells are altered by light entering the eye is phototransduction.

The photoreceptor responds to light stimulation by changing its resting membrane potential, resulting in a change in the neurotransmitters that it releases.

It should be noted that receptors bind to ligands and causes response in the immune system.

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US clean water act as a prompted the developers to install stormwater management systems to handle the movement of polluted water.

The Clean Water Act (CWA) establishes the fundamental framework for controlling pollution discharges into American waters and setting quality criteria for surface waters.

In 1972, the US Clean Water Act was adopted. The Act's principal goal was to control and minimize the entry of pollutants into water bodies. This was done to make the water bodies cleaner, clearer, and more suitable for usage by the general public and the abundant life forms that were already present.

In order to handle the removal of contaminated water from the water bodies, the developers decided to install stormwater management systems.

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Muscle contraction occurs when somatic neurons and muscle fibers connect through neuromuscular synapse. The order of events is 4, 3, 5, 2, 1.

Muscle fiber contractions are due to stimulation produced by somatic motor neurons, when their axons get in contact with muscle fibers through a neuromuscular synapse.

The sequence of events during muscle contraction is as follows,

1) At rest, attraction strengths between myosin and actin filaments are inhibited by the tropomyosin.

2) An action potential originates in the central nervous system, and travels to the somatic motor neuron membrane, where it activates the calcium channels.

3) Calcium channels open and the ions get into the neuron.

4) Calcium makes vesicles fuse with the membrane.

5) Vesicles release the neurotransmitter acetylcholine (Ach) into the synaptic space at the juncture.

6) Ach moves through the synaptic cleft and binds to its receptors on the skeletal muscle fiber.

7) This recognition event causes the ion channels to open,

8) The difference in charges caused by the migration of sodium and potassium makes the muscle fiber membrane turns more positively charged (depolarized).

9) The action potential caused by the depolarization enters the t-tubules. Consequently, it depolarizes the inner portion of the muscle fiber.

10) Depolarization activates the T tubules membrane calcium channels and releases the ion into the sarcolemma.

At this point, tropomyosin is obstructing binding sites for myosin on the thin filament.

11) When calcium binds the troponin C, the troponin T alters the structure of tropomyosin by moving it and unblocks the binding sites.

12) Myosin binds to the uncovered actin-binding sites, and while doing it, ATP is transformed into ADP and inorganic phosphate.

13) Z-bands are then pulled toward each other, thus shortening the sarcomere and the I-band and producing muscle fiber contraction.

According to this framework, the correct order of events is,

4. Vesicles full of acetylcholine are stored at the axon terminal.

3. Action potential arrives at the neuromuscular junction.

5. Acetylcholine is released into the synaptic cleft.

2. Acetylcholine binds to ligand gated sodium channels.

1. Action potential is propagated in the sarcolemma.  

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The relative time of divergence from a common ancestor can be estimated by comparing the nucleotide/protein sequence.

In molecular biology, sequence homo-logy means the degree of similarity between sequences due to a common ancestor.

A sequence is a given fragment of a single DNA strand where nucleotides are arranged in a specific linear order.

Divergence or separation between lineages is directly proportional to the level of sequence homo-logy.

In conclusion, the relative time of divergence from a common ancestor can be estimated by comparing the nucleotide/protein sequence.

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Two turns of Kreb's cycle are needed for one molecule of glucose.

The cycle represents part of the process of breaking down glucose to extract the locked energy in the form of ATP.

Each glucose molecule to be broken down first undergo glycolysis at the end of which 2 pyruvate molecules are produced.

Each turn of the Kreb's cycle requires a molecule of pyruvate. Thus, the two pyruvates molecules generated from single glucose will require 2 turns of Kreb's cycle.

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The function of primers in polymerase chain reaction is that it serves as the starting point for DNA  synthesis.

Primers function in PCR by;

Thus, the function of primers in polymerase chain reaction is that it serves as the starting point for DNA  synthesis.

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However, extremely high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity. Extreme pH values can cause enzymes to denature.

If the temperature and pH around an enzyme is changed, the enzyme would likely denature. Details about enzymes can be found below.

Enzymes are biological catalyst that regulates the rate of biochemical reactions in living cells.

Enzymes function at a particular temperature and pH and can easily get denatured i.e. alter its original form.

This suggests that if the temperature and pH around an enzyme is changed, the enzyme would likely denature.

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The lettered items are matched with the correct numbered items as follows:

a. -SSRNA: host ribosomes cannot translate it. Thus, it need to be copied to + strand to make viral proteins.

b. +SSRNA: it can be translated directly to make viral proteins.

c. Provirus: the integrated viral genome in an animal host.

d. RNA dependent RNA polymerase: an enzyme needed to copy RNA to RNA.

e. Retrovirus: it synthesizes complementary ssDNA once inside the cell.

A genome can be defined as the complete set of hereditary instructions which is typically found in the deoxyribonucleic acid (DNA) such as:

In conclusion, the lettered items should be matched with the correct numbered items as follows:

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Complete Question:

Match the items. The task is to match the lettered items with the correct numbered items. Appearing below is a list of lettered items. Following that is a list of numbered items. Each numbered item is followed by a drop-down. Select the letter in the drop down that best matches the numbered item with the lettered alternatives.

a. Host ribosomes cannot translate it. Need to copied to strand to make viral proteins

b. Translated directly to make viral proteins

c. Integrated viral genome in an animal host

d. Enzyme needed to copy RNA to RNA

e. Synthesizes complementary ssDNA once inside the cell.

1. +SSRNA

2. -SSRNA

3. Retrovirus

4. RNA dependent RNA polymerase

5. Provirus

The effect the properties of water have on Earth’s surface and its systems include:

This is the process in which earthen materials are worn away and transferred from one part to another.

The absorption and retention properties of water also ensure that weathering takes place.

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Answer:

The effect the properties of water have on Earth’s surface and its systems include:

Weathering and Erosion

Cladistic analysis provides information about the evolutive relationship between taxa according to derived characters. This information is represented in a cladogram.

The cladistic analysis provides information about the relationship between different taxa according to shared characters.

This information is represented in a cladogram that uses derived characters to express the evolutive relationships between groups.

Derived characters emerge and are inherited by all the descendant groups, meaning that all of them carry these traits until they disappear.  

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