Answer:
(A) Birds are endothermic and have four-chambered hearts, while reptiles are ectothermic and have three-chambered hearts.
Explanation:
got it right on the test
Birds and reptiles both belong to the animal kingdom. Reptiles are ectothermic and have three-chambered hearts, whereas birds are endothermic and have four-chambered hearts. Thus, option A is correct.
What are the characteristics of birds and reptiles?Birds and reptiles both belong to the kingdom Animalia and are chordates. They both have vertebral columns and the presence of the backbone. They share many similarities and differences in their physical appearances.
The birds are endothermic and can maintain constant body tempearture regardless of the external environment. While reptiles are ectothermic (cold-blooded) and regulate their temperature based on the external environment.
The birds have four-chambered hearts like mammals that separate the oxygenated from the de-oxygenated blood, whereas the reptiles have three-chambered hearts with one ventricle and two atria.
Therefore, the birds are endothermic, and reptiles are ectothermic.
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identify the explanations researchers suggested to explain differences in health and mortality by gender.
The differences in health and mortality by gender is a phenomenon for which researchers have many possible explanations.
There have been studies that have indicated that there is enough variation in the average health of males and females to conclude that there are factors at play that are affecting health.
Amongst the many possibilities, scientists have mentioned:
Gender-reliant genetic vulnerability Hormonal factorsDifferences in physiologyas the main possible reasons.
Hormones play a big part in the health of each individual and are vastly different between genders, along with the endless differences in physiology at a molecular level. These factors together may explain why some members of a gender are more vulnerable to genetic illness.
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Blood must travel through capillaries at a(n) ________ rate to assist with diffusion of fluid into the interstitial space.
Blood must travel through capillaries at a slow rate to assist with diffusion of fluid into the interstitial space.
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which of the following organisms obtain their energy from producers only
Answer:
heterotrophs.
Explanation:
Organisms that obtain their energy from producers or other consumers are heterotrophs.
place each of the labels in the proper position to denote whether they would pass through the filtration membrane or not.
The labels that will pass through the filtration membrane are water, glucose, and sodium.
The labels that will not pass through the filtration membrane are red blood cells, lymphocytes, antibodies, and platelets.
The filtration membrane is a microporous glomerular barrier membrane made of polymeric materials that are used for the separation and filtration of substances based on their molecular weight.
Depending on the molecular size of a substance situated in the blood, we can determine if such substances can be filtered through the filtration membrane or not.
However, the lower the molecular weight of the substance, the higher their likelihood of filtration.
In the plasma, the substance that has a lower molecular weight are water, glucose, and sodium while substance associated with protein, blood cell, and platelets contains higher molecular weight.
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The process of introducing a needed, normal gene, into human cells is called DNA mapping. True False
Answer:
true it is known as DNA mapping
Helpp
How might human population growth result in a tragedy of the commons?
A. Each birth is a common resource for the population.
B. All people use natural resources to survive.
C. People are the most important resource on Earth.
D. People have more in common than they realize.
Answer:
B. All people use natural resources to survive.
Explanation:
Just got it right on my quiz :)
the ventral rami of spinal nerves ________ form the major nerve plexuses.
Answer:
The blank is:
C1 through T1 and L1 through S4
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the key character that reptiles have and amphibians do not have is a/an
Answer:
Reptiles have scales, and their skin is dry. Amphibians do not, and their skin is often moist with mucus, which keeps them from drying up.
Find density if mass equal 400lb volume 20
Answer:
just use the formula d=m/v and plug in the numbers to solve the equation
Explanation:
which process is most critical for different types of tree cells to develop?
How do organisms remain highly organized in spite of the tendency toward entropy
Answer:Energy stored by organisms in organic molecules
Explanation:
You observe a yellow zone surrounding growth on mannitol salt agar. What does this indicate about the organism
Answer:
The organism is able to ferment mannitol.
Explanation:
Do all cells (brain cells, skin cells, liver cells, etc) express the genes or make the same proteins
Answer:
yes
Explanation:
have a good day or night
Directions: Together with your parents and siblings, create a simple irrigation system in your house that will help in growing your plants. Watch the video on the link below and use the knowledge that you gained from the lesson. After doing the activity answer the question: "How did you apply the knowledge you gain from the video and from the lesson in creating your own irrigation system?
Knowledge and understanding
20
Students showed excellent knowledge about the topic
10
Students showed limited knowledge about the topic
5
Students have very limited knowledge about the topic
The video with the necessary information to answer the question is missing. So, an irrigation system definition and example will be given.
An irrigation system is a structure made of tubes, hoses, and sprinkles; Its function is to water plants or crops with the correct amount of water and in an evenly way.
A simple irrigation system that will help grow plants at home is a plastic bottle with small holes connected to a hose with a tube that can lead the water from the hose to the bottle without losses. The bottle with its holes works as a sprinkler.
In conclusion, irrigation systems are in lawns, fields, or gardens, and they water the plants evenly so that they can grow. There are many types, but we can build a simple one with a bottle.
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the entire period between one m phase and the subsequent m phase is called what?
Explanation:
Interphase: The entire period between one M phase and the subsequent M phase is called: interphase.
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Red blood cells have _________ and generate energy ________.
mitochondria; anaerobically
no mitochondria; anaerobically
mitochondria; aerobically
no mitochondria; aerobically
None of the above
Answer:
no mitochondria; anaerobically
Explanation:
Red blood cells have no mitochondria and generate energy anaerobic. So, the answer would be B. You can easily eliminate A. and C. because they mention that blood cells have a mitochondria, but they don’t.
In camellia plants, flower color is controlled by a single gene with codominant alleles. A camellia plants with red flowers (RR) is crossed with a camellia plant with white flowers (WW). What are the expected phenotypes of the offspring of this cross?
Answer:
All will have both red and white flowers because the incomplete dominance have two combined alleles given for the offspring with intermediate phenotypes. Then offspring will be pink coloured while in codominance all alleles are expressed in phenotype in the offspring together so the red and white flowers both will be shown.
Explanation:
A frameshift mutation that results in the insertion of three nucleotides is often less deleterious than a mutation that results in the insertion of one nucleotide. Why?
what type of carbohydrate is created by photosynthesis?
Answer:
glucosePhotosynthesis requires sunlight, carbon dioxide, and water as starting reactants (Figure 5.5). After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose.
Mention some of plant organs
Answer:
Root,stem,Leaf and flower
Answer:
Plants are made up of organs, including roots, leaves, the stem and reproductive organs.
Each organ has its own functions.
Together, the organs of a plant allow it to carry out the seven processes of life.
Explanation:
Explain how hydrogen fuel cells work, and why they provide a healthy, clean way to produce heat and electricity. (Site 1).
Answer:
As there are no moving parts, fuel cells operate silently and with extremely high reliability. Due to their chemistry, fuel cells are very clean. Fuel cells that use pure hydrogen fuel are completely carbon-free, with their only byproducts being electricity, heat, and water.
Answer:
As there are no moving parts, fuel cells operate silently and with extremely high reliability. Due to their chemistry, fuel cells are very clean. Fuel cells that use pure hydrogen fuel are completely carbon-free, with their only byproducts being electricity, heat, and water.
enzymes that cleave nucleotides from the ends of a dna molecule are known as what?
Enzymes that cleave nucleotides from the ends of a DNA molecule are known as Restriction endonucleases.
What are Enzymes?Enzymes may be defined as the type of biocatalysts that significantly increase the rate of a chemical reaction without being changed in the overall process. It is thought that all cellular reactions and processes are mediated by enzymes.
Restriction endonucleases are the enzymes that are also called molecular scissors which are responsible for cutting DNA at specific sites. These enzymes are present in bacteria in order to provide a defense mechanism called the restriction modification system.
There are various types of restriction enzymes are known. For example, BamH1, EcoRI, Hind III, etc.
Therefore, restriction endonucleases are the enzymes that cleave nucleotides from the ends of a DNA molecule.
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The ordered array of an organism's chromosomes is called a(n)
allele
pedigree
karyotype
mutation
Answer:
allele is the best answer there
Answer:
I understand you probaly don't need this answer anymore but the correct answer is Karyotype.
Explanation:
What is the open space that separates the left and right lung?
Corpus callosum
Septum
*Mediastinum
All of the above
Answer:
c. Mediastinum
Explanation: is correct. post protected
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Discussion 4.3: Preventing Heart Disease
Heart disease is generally caused by a mix of genetics and poor lifestyle factors such as high stress, poor diet, and lack of exercise. What can you do to prevent heart attacks, high blood pressure, and high cholesterol?
Answer:
Live a healthy lifestyle and avoid anything that may trigger such Diseases.
persistent depressive disorder, or dysthymia, is characterized by
Given what we know, we can confirm that persistent depressive disorder, or dysthymia, is characterized by the presence of prolonged depressive symptoms.
What is a depressive disorder?A depressive disorder is a condition that causes a lack of motivation, happiness, and other positive feelings.Depression is experienced by millions of people from around the world. It can be induced by events in one's life, or be caused by a chemical imbalance in the brain. What separates it from depression?What separates a depressive disorder from a more common case of depression is the frequency by which the symptoms manifest. They are known as depressive disorders when the symptoms are chronic in nature, meaning they manifest repeatedly and for prolonged durations.Therefore, we can confirm that persistent depressive disorder, or dysthymia, is characterized by persistent symptoms relating to depressive episodes, that are chronic in nature and often caused by chemical imbalances in the brain.
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Which membrane component is a glycoprotein?
ОА
ОD
ОB
ОC
Answer:
oc
Explanation:
What's the only kind of parrot that can't fly?
During meiosis, the cells that are created are used during
a. regeneration of new tissue
b. regeneration of worn out cells
c. fertilization
d. cytokinesis
e. more than 1 answer is correct
Answer:
C
Explanation:
because fertilization is the fusion of male gamete and female gamete that arises from meiosis
why is the digestive tract of the frog well vascularized
The digestive tract of the frog is well vascularized because it aids in the absorption of nutrients.
The digestive tract of a frog is a hollow long tube that extends from the mouth to the anus which helps in the ingestion and digestion of food.
The digestive tract of frog has the following characteristics:
alimentary canal of the frog is not long, that is, it is short. It has accessory organs of digestion such as liver, gall bladder and pancreas.All the digested food substances are absorbed at the small intestine due to the presence of microvilli.
This microvilli is made up of a central core that is vascularized, that is, it contains artery, vein and lymphatic capillary.
Therefore, the vascularized microvilli of the small intestine of frog help in the absorption of nutrients.
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