Answer:
440 - 410 million years ago
Explanation:
Whatever their origins, animals may have ventured onto land early in the Cambrian. Previously scientists believed that animals did not begin to colonise the land until the Silurian (440 - 410 million years ago).
Intraperitoneal organs include the ______, most of the ______, and parts of the large intestine. multiple select question. stomach liver small intestine pancreas
Intraperitoneal organs include the stomach, most of the small intestine and parts of the large intestine.
What are intraperitoneal organs?Intraperitoneal organs can be defined as organs which are enveloped by the peritoneal.
However, these organs include:
StomachSpleenLiverFirst and fourth parts of the duodenum, jejunum, ileum and othersIn conclusion, intraperitoneal organs include the stomach, most of the small intestine and parts of the large intestine.
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Based on your knowledge of energy flow and light absorption, which color(s) of light will provide energy for photosynthesis? (select all that apply) question 2 options: red orange green blue violet
Answer:
RED and BLUE
Explanation:
Special pigments in chloroplasts of plant cells absorb the energy of certain wavelengths of light, causing a molecular chain reaction known as the light-dependent reactions of photosynthesis. The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm).
Red and blue as the best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm).
Which colors of light are most absorbed for energy during photosynthesis?Chlorophyll is the pigment responsible for photosynthesis. It absorbs most energy from wavelengths of violet-blue and orange-red light.
The chlorophyll pigments mainly absorb blue and red light. Maximum absorption is in blue light but maximum photosynthesis occurs in red light
Thus, the answer is red and blue.
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The menisci found in some synovial joints are attached to the ______ at the periphery of the joint cavity.
Answer:
joint capsule.
Explanation:
what is the answer to this question its biology
Answer:
The second one?
Explanation:
That's very complicated but from what I can tell it looks like it would be the second answer
In treating victims of carbon monoxide poisoning, artificial respiration is first applied in the open air, followed by the administration of a mixture of 93% oxygen and 7% carbon dioxide. The carbon dioxide
a. stimulates the breathing centre
b. increases the diffusion of oxygen
c. displaces the carbon monoxide on the hemoglobin
d. increases the diffusion of carbon dioxide out of the lungs
Displaces the carbon monoxide on the hemoglobin. Therefore, option (C) is correct.
What is carbon monoxide poisoning?Carbon monoxide (CO) poisoning occurs when an individual inhales excessive amounts of this colorless, odorless, and tasteless gas. Carbon monoxide is produced by the incomplete combustion of fossil fuels, such as gasoline, natural gas, coal, or wood. When inhaled, carbon monoxide binds to hemoglobin in the bloodstream, preventing it from carrying oxygen to the body's tissues, leading to symptoms such as headache, dizziness, nausea, confusion, and in severe cases, coma or death. Carbon monoxide poisoning can occur in poorly ventilated areas, or from faulty appliances, such as furnaces, water heaters, or cars left running in a closed garage. Early detection and treatment are essential for a successful outcome.
Carbon dioxide competes with carbon monoxide for binding sites on hemoglobin, and has a higher affinity for those sites. As a result, administering a mixture of 93% oxygen and 7% carbon dioxide can help to displace the carbon monoxide from the hemoglobin, allowing the oxygen to bind and be transported to the tissues that need it.
Therefore, option c. displaces the carbon monoxide on the hemoglobin is the correct option.
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17.List in order the following from least to most complex:
a. Muscular system, muscle tissue, biceps muscle, muscle cell
b. Heart, cardiac muscle, muscle tissue, muscle cell
c. Lung tissue, trachea, nostrils, circulatory system
d. Integumentary system, skin cell, hair, sweat gland
Answer:
The answer would be a Muscular system, muscle tissue, biceps muscle, muscle cell :)
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Have an amazing day!!
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The hormone ________ signals feelings of fullness to the brain.
Answer:
leptin
Explanation:
Another hormone, Leptin, produced by fat cells, is an Adiposity signal that communicates with the brain about long-range needs and satiety, based on the body's energy stores. Research suggests that Leptin amplifies the CCK signals, to enhance the feeling of fullness
Desensitization to prevent an allergic response can be accomplished by injecting repeated doses of: Group of answer choices IgE antibodies the antigen (allergen) histamine IgG antibodies antihistamine
Desensitization to prevent an allergic response can be achieved with doses of the antigen.
How do these doses of Antigen cause desensitization?The small and controlled doses of antigen (allergen) can cause desensitization to said allergy. This is because they allow the body to slowly build up natural defenses to this antigen, allowing it to be better prepared to combat said antigen during the next exposure.
Therefore, we can confirm that desensitization to prevent an allergic response can be achieved with doses of the antigen.
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Which is included in a lysogenic cycle? early lysis of the host cell the creation and assembly of viral particles the appearance of viral infection symptoms a period of genetic integration
The lysogenic cycle includes the early lysis of the host cell that involves the incorporation of the viral genome into the host cell genome.
What do you mean by the Lysogenic cycle?
A lysogenic cycle may be defined as a method by which a virus can replicate its DNA using a host cell.
In the lysogenic cycle, the viral DNA gets integrated into the host's DNA but viral genes are not expressed. Lysogeny is characterized by the integration of the bacteriophage nucleic acid into the host bacterium's genome.
Therefore, the lysogenic cycle includes the early lysis of the host cell that involves the incorporation of the viral genome into the host cell genome.
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(20 points!)
In order to survive, animals need to adapt to their environment over many generations. Think about your favorite animal, its physical features, and its environmental challenges. Without doing any outside research, in 3-5 sentences, try to: a) describe what features have likely had to adapt to its environment over time, and b) hypothesize what ways it might have to adapt to environmental changes in the future.
Birds are animals that have wings to fly, which can be adapted (modified) to regions where winds are more intense.
What is adaptation?Adaptation refers to the emergence of traits capable of facing challenging environmental conditions.
In birds, wings are an adaptive trait of this taxonomic group, which can be modified according to the environment.
In regions where winds are more intense, wings can take different anatomical forms in order to resist these environmental conditions.
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for animal cells a ____ starts devloping from the outside of the cell and will eventually spluit the cell into two
for animal cells a cleavage furrow starts devloping from the outside of the cell and will eventually spluit the cell into two
What does dna have that determines all my traits
Answer:
These sections of DNA that contain information that determine your physical features are called genes. Since you have two pairs of chromosomes, you also have two pairs of genes, one from your father and one from your mother. These pairs of genes then determine certain physical features or traits.
Explanation:
Several hypotheses have been proposed concerning evolutionary processes. Which of these must be true?
Please help!! Not sure about this question. Is it A or B? I think it’s one of those two
Answer:
Your answer is also B. it has caused the shoreline to erode.
It has caused the shore line to erode. Therefore, option (B) is correct.
What are ocean waves?Ocean waves are the result of the interaction between the ocean and the wind. They are the most visible and powerful manifestations of the Earth's oceans. Ocean waves vary in size, shape, and speed, depending on the wind's strength, duration, and direction. They can range from small ripples to massive swells and can travel thousands of miles before breaking on shorelines.
The energy of ocean waves is harnessed for various purposes, such as surfing, fishing, and generating electricity through wave energy converters. However, ocean waves can also be destructive, causing erosion and flooding in coastal areas during storms.
Ocean waves play a crucial role in regulating the Earth's climate by transferring heat and energy from the tropics to the poles. They also help distribute nutrients and oxygen to marine life, and their movement influences the ocean's circulation patterns.
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Primary ossification centers develop in long bones in the:.
Answer:
diaphysis/shaft
Explanation:
In long bones the primary centers occur in the diaphysis/shaft and in irregular bones the primary centers occur usually in the body of the bone.
How would this hypothesis be different from a scientific law? Review the definitions of law and hypothesis to help you. (2 points)
More efficient plumbing reduces water pollution by _______.
a.
using more water
b.
using less water
c.
using cleaner water
d.
using dirty water
Please select the best answer from the choices provided
A
B
C
D
lets r-p
Answer:
Explanation:
You have two good reasons for good plumbing
Clean waterUsing Less water.Plumbing also includes things like waste disposal. Modern toilets for example use less water.
Health and well being are important. Good plumbing increases your chances of the water being clean and germ free.
I don't know which answer to pick. I think well being is more important than using slightly less water.
Answer: C
Answer:
B
Explanation:
Enzymes _______ the activation energy threshold required to start a chemical reaction.
raise
lower
Answer:
lower
Explanation:
Enyzmes usually lower the activation energy required to start a chemical reacion. It's useful to remember enyzmes as compounds which help speeden up different chemical processes. They do this by decreasing the required activation energy and therefore increase the chance of a chemical reaction occuring.
Enzymes lower the activation energy threshold required to start a chemical reaction.
Definition of Enzymes: a substance produced by a living organism which
acts as a catalyst to bring about a specific biochemical reaction.
Hope that helps!
The pharynx functions as a passageway for __________, whereas the larynx functions as a passageway for __________.
The Pharynx is the passageway way for food
The Larynx is the passageway for air
The Pharynx is a long tube that is located in the throat region, it helps in the smooth passage of food from the mouth and down to the stomach where it is needed for body metabolism
The larynx helps in the free flow of air, it is sometimes called the voice box. It plays a vital function by blocking the windpipe from taking in food particles
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Which of the following reasons is proof that viruses are not living cells?
A) Viruses only have DNA.
B)Viruses are covered by a protein coat.
C)Viruses are not capable of replicating outside a host cell.
D)Viruses cause diseases in both plants and animals.
Answer:
c
Explanation:
viruses aren't like bacteria where they could survive on their own.
In the case of a person who consumes a normal, balanced diet, proteins are essential to the body for all of the following except ________. A) production of energy B) production of some hormones C) production of enzymes, clotting factors, and antibodies D) formation of functional molecules like hemoglobin and cytochromes
Proteins have several functions they play in the body system but they are not essential to the production of energy.
Functions of ProteinsProteins play a large role in the functioning of the body system. These roles include:
Building and repair of body tissuesIt supplies the body with amino acids which aid in the production of hormones, enzymes, clotting factors, and antibodiesIt also helps in the synthesis of proteinous molecules such as hemoglobinMore on the functions of proteins can be found here: https://brainly.com/question/10945907
Use the drop-down menus to determine which structures of the exocrine system are described below. secrete mucus that protect organs secretes enzymes that aid in digestion secrete tears keep the skin hydrated and soft
Answer:
✔ goblet cells
secrete mucus that protect organs
✔ pancreas
secretes enzymes that aid in digestion
✔ lacrimal glands
secrete tears
✔ oil glands
keep the skin hydrated and soft
Explanation:
On edge
Answer:
goblet cells: secrete mucus that protect organs
pancreas: secretes enzymes that aid in digestion
lacrimal glands: secrete tears
oil glands: keep the skin hydrated and soft
Why do dogs respond to higher pitched voices?
Answer: A high-pitched, singsongy vocalization means that an animal is non-threatening, peaceful or empathetic. Dogs even employ a higher pitch with us when they're trying to get the same message across, like when they whine when they see their owner.
Explanation:
The membrane surrounding all cells is called
molecules cross it, while keeping other substances in (or out).
because it lets some
O excrete
O semi-permeable
O osmosis
O isotonic
Answer:
I believe that this one is the cell membrane, but double-check.
Explanation:
Assume all of the presynaptic synapses identified produce epsps. If two of these synapses fired simultaneously, which synaptic combination brings the initial segment closest to threshold based on spatial summation? click on the appropriate synapses.
Based on spatial summation, the synapses closest to each other will brings the initial segment closest to threshold.
What are Excitatory Post-Synaptic Potentials, EPSPs?Excitatory Post-Synaptic Potentials, EPSP, are postsynaptic potential changes that are induced by neurotransmitters which depolarizes the cell, and hence increases the likelihood of initiating a postsynaptic action potential.
Based on spatial arrangement, the summation of two simultaneously fired synapses that is greater than or close to threshold potential will produce an action potential.
Therefore, the synapses closest to each other will brings the initial segment closest to threshold.
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Which part of a sound wave measures loudness? O wavelength O magnitude O amplitude O frequency
Match the following terms and definitions.
1. oxidation
a chemical reaction in which oxygen is combined with another substance
2. phosphorylation
when a phosphate is added to a molecule
3. dephosphorylation
when a phosphate is removed from a molecule
The oxidation of a substance is the a chemical reaction in which oxygen is combined with another substance. Similarly the phosphorylation is the addition of phosphate group and dephosphorylating is the removal of phosphate group.
What is oxidation reaction ?The oxidation reaction is a type of reaction in which a substance reacts with oxygen or it loss one or more electron to transfer to its higher oxidation states.
The phosphorylation is the addition of a phosphate group (PO₄) into a molecule. Phosphorylation is a very significant combination reaction step takes place in nucleic acids in all living things.
Dephosphorylation is just opposite to the phosphorylation reaction. Here, the phosphate group is removed from the molecule. In some metabolic reactions ATP undergo dephosphorylation to form ADP molecule. Hence, all the terms and definitions are correctly matched here.
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Dna strands are antiparallel. Which of the following statements defines antiparallel?.
Answer:
A 5 to 3 DNA stand is paired with the. 3 to 5 DNA stand.
Explanation:
Please Help Me
How does energy drive the water cycle?
Select one:
-Energy from the sun heats liquid water, forming water vapor.
-Energy from Earth’s interior (mantle) heats liquid water, forming water vapor.
-Energy from the sun heats condensed water, forming precipitation.
-Energy from Earth’s interior (mantle) melts solid water, forming liquid water.
Answer:
Energy from the sun heats liquid water, forming water vapor
Explanation:
The heat from the sun evaporates water, which makes clouds and then causes rain. The cycle then repeats after the sun comes out again.
In the blood most of the oxygen that will be used in cellular respiration is carried from the lungs to the body tissues _____.
Answer:
Combined with hemoglobin
