Answer:
A. Blood is pumped into the aorta and the pulmonary trunk.
B. All of the above.
C. Through the aortic valve.
D. Resistance, stroke volume and heart rate.
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
Additionally, the right atrioventricular valve (AV) also referred to as the tricuspid valve is located on the right dorsal side of the human heart. The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.
In conclusion, the following can be deduced;
A. During the ejection period of the cardiac cycle, the mammalian heart pumps blood into the aorta and the pulmonary trunk.
B. Cardiac output can be defined as the volume of blood that is being pumped by the mammalian heart through the left and right ventricle per unit time (minute).
C. The left side of the mammalian heart in all living organism pumps blood through the aortic valve.
D. The variables the cardiovascular system can alter to maintain blood pressure include the following; resistance, stroke volume and heart rate.
Which is a major factor affecting population growth rate? (Site 1)
Explanation:
Factors affecting populations. Populations are affected by many factors, the main natural ones being birth rates and death rates which affect the level of natural change (increase or decrease) within the population.
What substance is it if the molecules are moving away from each other?
Gases
In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.
4. Kevin is tall (Tt), has brown hair (Bb), has a cleft chin (CC), and is right handed (Rr). Kevin is homozygous for his
height
handedness
hair color
cleft chin
Kevin is homozygous for his cleft chin as all other are heterozygous. So, the correct option is (D).
What is Homozygous genotype?Homozygous is defined as having inherited the same allele for a genomic marker from each biological parent, so an individual who is homozygous for a genomic marker has two identical versions of that marker. Whereas an individual who is heterozygous for a marker has two different versions of that marker.
In a diploid species there are two alleles for each trait or gene in each pair of chromosomes at the same locus, or locus with one coming from the father and the other from the mother.
An allele is one of two or more alternative forms of a gene, and are found at the same locus on chromosomes, so homozygous refers to having the same allele for a particular locus. So, in this case cleft chin is homozygous as they have same allele as compare to others.
Thus, Kevin is homozygous for his cleft chin as all other are heterozygous. So, the correct option is (D).
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Three features that arachnids share with other arthropods.
Answer:
1. Segmented bodies
2. Jointed appendages
3. Tough exoskeletons
Explanation:
2. What alleles code for a female?
Two pea plants were cross-pollinated. Both parents have the heterozygous genotype
Bb. What percent of the offspring would have the genotype bb?
A. 25%
B. 0%
C. 50%
D. 100%
Which description is an example of a structural adaptation?
Group of answer choices
Fish have gills to breathe in water.
Monarchs migrate to Mexico in the winter.
A dog comes to its owner when called.
Many bears hibernate in caves during winter.
.:Answer:Many bears hibernate in caves during winter
Explanation:
What are F1 and F2 genotypes?
F1 generation is the first filial generation, whereas F2 generation is the second filial generation obtained by crossing the F1 generation.
F1 is the first filial generation obtained by crossing two different parents. The parents are different from one another; one is homozygous dominant for both qualities, while the other is homozygous recessive. For both features, all of the progeny exhibit dominant traits. It is crucial for hybridization because it produces offspring with the best traits from both parents. Outbreeding depression, or decreased fitness in the progeny as a result of a cross between two distant parents, is occasionally observed in the F1 generation.
The F1 generation was self-crossed to produce the second filial generation. Both features are heterozygous in the parents. The generation displays a 9:3:3:1 phenotypic ratio. It is crucial for preserving a pure line or for keeping the qualities stable across several generations. Inbreeding depression in the F2 generation, when the offspring have a lower survival and fertility rate, might result from ongoing inbreeding of the F1 generation.
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Give a reason why lack of roughage in diet often leads to constipation.
Answer:
fibres helps muscles to move stronger to move food to required places and for excretion by peristalsis in small and large intestine so without fibre ,these muscles wouldnt work correctly and causes constipation
The cap that is added to the RNA during processing: (Select all that apply.) O is needed for ribosomes to attach to messenger RNA. O helps prevent rapid breakdown of the messenger RNA. O helps prevent formation of complex three-dimensional structures in the messenger RNA. O aids in the accuracy of translation of the messenger RNA into protein. 4.
The cap that is added to the RNA during processing is an important component in the protein synthesis process. During transcription, this cap, known as the 7-methylguanosine cap, is added to the 5' end of the RNA molecule.
The addition of this cap serves several important functions in the messenger RNA's life cycle messenger RNA (mRNA). To begin with, the cap is required for ribosomes to attach to the mRNA. The cap structure acts as a binding site for ribosomes, which are the cellular organelles in charge of reading mRNA and translating it into protein.
The ribosome recognises the cap structure and uses it as a marker to indicate where translation should begin. Second, the cap prevents the mRNA from being rapidly degraded. mRNAs are constantly attacked by enzymes known as ribonucleases (RNases), which are enzymes that degrade RNA. The cap structure protects mRNA from RNases by making it less accessible to enzymes.
Third, the cap helps to prevent the formation of complex three-dimensional structures in mRNA. The cap structure acts as a marker to indicate where translation should begin, preventing the mRNA from forming complex structures that would obstruct translation.
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If you know the answer to this question please help!! ASAP
What would happen to a plant in a closed chamber without oxygen? Why?
Answer:
Most plants need air in the soil and will perish if there isn't any.
Explanation:
why is it difficult to include water vapor in a graph of the percentages of various gases in the atmosphere? How could you solve the problem
Atmosphere is a blanket of air surrounding the earth. It is composed of different gases. It difficult to include water vapor in a graph of the percentages of various gases in the atmosphere.
What are main gases?The gases nitrogen as well as oxygen are the main gases which has been comprise 78.08 % and 20.95% by the volume respectively. The carbon dioxide has another important gas which consists of 0.036%.
In the atmosphere water vapor has been 0 to 4% but it has concentration varies in the atmosphere near different regions, for example the highest concentrations is near the equator over the oceans and tropical rain forests.
Therefore, Atmosphere is a blanket of air surrounding the earth. It is composed of different gases. It difficult to include water vapor in a graph of the percentages of various gases in the atmosphere.
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PLZ HELP!!!
How are rock types affected by acid rain?
When cells are going through the steps of mitosis, they are
__________ is an important factor in the process of maturation because it provides a biological framework of how much one is capable of accomplishing.
Human development is an important factor in the process of maturation because it provides a biological framework of how much one is capable of accomplishing.
Maturation is an important part of human development, as it is the process by which individuals transition from childhood to adulthood. As such, it is essential for individuals to understand the biological framework of how much one is capable of accomplishing in order for them to reach their full potential.
Biological maturation plays a critical role in the developmental process by providing a biological framework of how much one is capable of accomplishing. This framework is composed of a variety of factors, such as the person’s physical characteristics, hormone levels, and brain development.
These factors determine how much a person is capable of learning, understanding, and doing. For example, a person’s hormone levels can influence how quickly they can learn new skills, while their brain development can influence how well they can recall information. By understanding this biological framework of maturation, individuals can better understand their own capabilities and strive to reach their full potential.
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What are the 3 light reactions in plants?
fame money and girls
3. Gwen has blue eyes. She got one allele from her blue-eyed mother and another allele from her brown-eyed father. What is Gwen's phenotype?
brown eyes
blue eyes
green eyes
blue and brown eyes
Answer: Her phenotype is Option 2: Blue Eyes.
Dictionary Definition of Phenotype: The set of observable characteristics or traits of an organism.
Explanation: The genes that make her eyes blue came from dominant alleles.
Answer:
brown eyes
Explanation:
The brown eye form of the eye color gene (or allele) is dominant, whereas the blue eye allele is recessive.
What to do: 1. Find a partner. Bring out the different materials needed for the activity. 2. Using a marker, label the twigs as E. 3. Label the cans as A. Put a small amount of soil in the cans. 4. Label the bottles as T. Put a small amount of water. 5. Put the water lily in A, mongo seeds in T and orchids in E. 6. Make another two sets to grow the same plant using the guides below. • A-mongo . T- orchids ● • E-mongo • E-water lily 7. Place all the set up for 3 days in a place with enough sunlight and air. Observe after three days. Set Up T(bottles) Plants water lily mongo orchids • A- orchids T - water lily Set Up A(cans) Set Up E (twigs)
Measure out and carefully pour a quarter cup of oil into the Oil+Water container. Watch the water and oil in the bottle while letting it rest on a tabletop or other flat surface.
How long do orchids survive?Orchids can survive up to 20 years in the wild, depending on their species and the environment. While potted orchids don't have quite the same longevity, with proper care, they may survive for 10 to 15 years. According to some reports, orchids have far longer life spans.
What does the orchid represent?The orchid represents love, beauty, refinement, having many offspring, thoughtfulness, and mature appeal in floral symbolism. There is now a sizable market for orchids all around the world.
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1. Which of the following elements is the LEAST abundant in living organisms?
a oxygen
b nitrogen
c phosphorous
d sulfur
Answer
Sulfur is the least abundant in living organisms.
sulfur is the LEAST abundant in living organisms among the options.
Living organisms are composed of Chemical elements which constitute the build up organelles, cells, tissues, and organs.
The Chemical elements are divided into:
Essential elements : These essential elements are 11 in number ad also subdivided into the major essential elements which make up about 99% of the human body mass. They include Oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus. The remaining five (least essential elements) consists of Sulfur, potassium, sodium, chlorine, and magnesium which make up about 0.85% of the remaining mass. Trace elements:.The trace elements comprises of the remaining 0.15% of the human body is comprised of trace elements. Whether they may be essential for life, is still being researched for evidence.Arranging the essential chemical elements according to abundance in living orgasm we have:
Oxygen 65.0% of body massCarbon 18%Hydrogen 10%Nitrogen 3% Calcium 1.4 %Phosphorus 1.1% Potassium 1%SulfurChlorineMagnesiumWe can therefore conclude that from the question Sulfur is the least abundant in living organisms.
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Select the vertebrate taxon or taxa whose origin(s) involved duplication of Hox genes.
Select all that apply.
a) Gnathostomes
b) The genus Homo
c) Craniates
Gnathostomiases The vertebrate binomial nomenclature or taxa with origin(s) involves Hox gene duplication are known as craniate.
Why does gnathostomiasis occur?Several species species parasitic worms (nematodes) of the genus Gnathostoma are responsible for human gnathostomiasis. Although it has been identified in other parts of Asia, South and Central America and also some regions of Africa, the illness is most frequently discovered and diagnosed in Southeast Asia.
Gnathostomiasis is detected in what ways?Based on clinical signs, gnathostomiasis in humans can be diagnosed. And symptoms (intermittent dermal or cutaneous migrating swelling), a raised blood eosinophil level, and a pertinent exposure history (residing in or visiting areas where the disease is endemic; consuming raw or undercooked foods fish, frog, or chicken)
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One well-known recessive disorder is __________, which affects the way the body breaks down proteins contained in many foods.
One well-known recessive disorder is Phenylketonuria (PKU), which affects the way the body breaks down proteins contained in many foods.
Phenylketonuria (PKU) is an extraordinary however doubtlessly severe inherited disease. Our our bodies smash down the protein in foods, consisting of meat and fish, into amino acids, that are the "constructing blocks" of protein. Phenylketonuria, additionally referred to as PKU, is an extraordinary inherited disease that reasons an amino acid referred to as phenylalanine to accumulate withinside the body. PKU is due to a alternate withinside the phenylalanine hydroxylase (PAH) gene. This gene allows create the enzyme wanted to interrupt down phenylalanine. Phenylketonuria is a genetic circumstance in which ranges of phenylalanine building up for your body. If left untreated, phenylketonuria can have an effect on a person's cognitive development. Treatment with medicines and/or nutritional modifications assist lessen symptoms.
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5. What would happen if SpongeBob and Patrick crossed two "goobers" or green jellyfish? Complete the
Punnett square to help you determine the probability for each color of jellyfish.
(a) Give the possible genotypes and phenotypes for the offspring.
(b) What percentage of the offspring would be yellow? ____%
(c) What percentage would be blue? ___%
(d) What percentage would be "goobers" (green)? _%
(a) The possible genotypes and phenotypes for the offspring 25% Yellow YY , 50% Green Yy , 25% yy .
(b) Percentage of the offspring would be yellow is50%.
(c) Percentage of be blue is 0%.
(d) Percentage of "goobers" (green) is 50%.
The young creation of living organisms, known in biology as progeny, can be created by a single organism or, in the event of sexual reproduction, by two organisms. A group of offspring is sometimes referred to as a brood or progeny in a more generic sense.
Your biological parents are the ones who gave birth to you. Basically, this is another term for kids. Offspring includes young humans, horses, gorillas, lizards, and gorillas. When a mother gives birth to quadruplets, she subsequently has a large family.
The genotypes of a specific cross or breeding experiment are predicted using the Punnett square, a square diagram. It bears Reginald C. Punnett's name, who developed the method in 1905. Biologists use the picture to estimate the likelihood.
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Sarah thinks that the number of worms on the sidewalk in front of her house increases after a rainfall. Which would be the best way to test her prediction?
Answer:
To collect data about the population of worms before and after the rainfall.
Explanation:
The best way to test her prediction, we have to wait for the rain and collect the data after the rain and before the rain. The difference between shows the result whether she is right or wrong. In my opinion, she is right because the worms comes out from the soil in order breathe. The rain water block the porous spaces in the soil through which the oxygen enters into the soil and the worms can breather so due to blocking no oxygen for them so they come out from the soil after rainfall.
Which of the following is the most accurate description of the methodological advantage of twin studies: . Twin studies use both self-report and peer report.
B. Because twins share DNA it is possible to estimate the contribution of genetics to their personality and behavior.
C. Because twins share genetics and live in the same environment they provide information about both nature and nurture.
D. Because there are two participants the findings always replicate.
Twin studies involve identical or fraternal twins. They aim to demonstrate environmental and genetic influences on traits, phenotypes, and disorders therefore, option b is the right choice.
Behavioral genetics, biology, and psychology use twin research. Behavior genetics uses siblings, adoption, pedigree, and twin studies to study genetics. These studies have tracked everything from personality to schizophrenia symptoms.
"Identical" or monozygotic twins share essentially 100% of their genes, so most differences between them (such as height, susceptibility to boredom, intelligence, depression, etc.) are due to experiences one twin has but not the other.
Like siblings, "fraternal" or dizygotic twins share 50% of their genes. Twins share their uterine environment, parenting style, education, wealth, culture, and community because they are born into the same family. Discordance—the presence of a genetic or phenotypic trait in only one twin—provides a powerful window into environmental effects on such traits.
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The human brain differs from the brains of most other animals by the relative amount of brain mass devoted to which of the following
The human brain differs from the brains of most other animals by the relative amount of brain mass devoted by the cerebral cortex.
The human brain is uniquely distinguished from the brains of other animals by the size of its cerebral cortex in comparison to the overall mass of the brain.
This part of the brain is responsible for complex cognitive functions, including language processing, conscious thought, and higher-level problem solving.
As a result, the human brain is capable of much more sophisticated processing than other animal brains, allowing us to think abstractly, create art, and develop complex language.
The human brain is vastly different from most other animals' brains, primarily due to the sheer amount of mass devoted to the cerebral cortex. This area of the brain is responsible for many of our most complex cognitive processes, such as decision-making, problem-solving, and creative thinking.
Although a part of your question is missing, you might be referring to this question:
The human brain differs from the brains of most other animals by the relative amount of brain mass devoted to which of the following:
a) cerebral cortex
b) cerebellum
c) brainstem
d) cerebrum
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Zoom out as far as possible and locate the Ring of Fire on your map. Compare the location of the volcanoes in the Ring of Fire with the nearby plate boundaries. Using the plate boundaries legend, which type of boundary is most prevalent at the location of these volcanoes?
Note that the type of boundary most prevalent at these volcanoes is: "the Divergent/Transform Plate boundary. See the attached image showing the ring of fire.
What is the ring of fire?
The Ring of Fire is an area on the Pacific Ocean's rim where frequent volcanic eruptions and earthquakes occur. The Ring of Fire is a 40,000 km long and up to 500 km broad horseshoe-shaped ring.
The Ring of Fire, also known as the Circum-Pacific Belt, is a route that runs around the Pacific Ocean that is marked by active volcanoes and frequent earthquakes. The Ring of Fire is where the bulk of Earth's volcanoes and earthquakes occur.
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What term refers to a nerve signal moving through a nerve cell?
A.sliding filament model
B.humoral response
C.action potential
D.cell mediated
Answer:
Option C is correct ( Action potential)
Explanation:
a momentary reversal in electrical potential across a plasma membrane (as of a neuron or muscle fiber) that occurs when a cell has been activated by a stimulus.
Please help with this. It's due today.
Answer: 2, 3, 4, 1
Explanation:
How did this data further support the hypothesis that DNA is the transforming factor?
In a very simple experiment, Oswald Avery's group showed that DNA was the "transforming principle.
Why is DNA the transforming factor?Oswald Avery, Colin MacLeod, and Maclyn McCarty appear that DNA (not proteins) can transform the properties of cells, and simplify the chemical nature of genes. Avery, MacLeod, and McCarty recognize DNA as the "transforming principle" while learning about Streptococcus, bacteria that can cause pneumonia.
When isolated from one tension of bacteria, DNA was able to transform another strain and give out characteristics to that second strain. DNA was convey hereditary information.
So we can conclude that the transforming principle Griffith noticed was the DNA of the III-s strain bacteria.
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