Answer:
The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life comes from preexisting life.
Explanation:
your mom
omplete the passage to describe the function of the heart.
The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called
, and the lower chambers of the heart are called
.
Answer:
The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called at atria and the lower chambers of the heart are called ventricles.
An antibody molecule has a molecular weight of 150 kD when analyzed by SDS polyacrylamide-gel electrophoresis (SDS-PAGE). Treatment with mercaptoethanol, a reducing agent that breaks disulfide linkages, yields polypeptides with molecular weights of 50 kD and 25 kD, and both of these bands are similar in intensity and thickness. Based on this gel pattern as described, what can we conclude about the molecular composition of the antibody molecule
Answer:
The antibody has a molecular weight of 150 kD and consists of four subunits: two subunits of 50 kD and two subunits of 25 kD, which are bonded by covalent bonds.
Explanation:
Sodium dodecyl sulfate (SDS) is a detergent used to alter and denature proteins before gel electrophoresis. SDS can break hydrophobic interactions and hydrogen (H) bonds, but this detergent does not break down disulfide bonds, which is a type of covalent bond between two sulfur atoms. Moreover, mercaptoethanol is a reducing agent used to break disulfide bonds. In this case, it is expected that mercaptoethanol can break disulfide bonds between the four subunits of the mature antibody, thereby yielding two bands corresponding to the 50 kD and 25 kD bands (two subunits of 50 kD + two subunits of 25 kD = 150 kD).
Davahl is interested in tortoises because they can live for over a hundred years and have unique metabolisms. She wants to perform an experiment to see if they can live even longer with a specific nutrient supplement Davahl is given a five-year research grant to perform her experiment
Which is the most likely practical limitation that Davahl is having with performing her experiment?
O time
O ethics
O money
O technology
Answer:
Time
Explanation:
As said In The Question "They Can Live Over A Hundred Years", Well There Is No Way That Davahl Can Live For Over A Hundred Years
Propose advantages and disadvantages of nuclear energy as an energy source.
Answer:
Advantages:
Produces no polluting gases.
Does not contribute to global warming.
Very low fuel costs.
Low fuel quantity reduces mining and transportation effects on environment.
High technology research required benefits other industries.
Disadvantages:
Waste is radioactive and safe disposal is very difficult and expensive.
Local thermal pollution from wastewater affects marine life.
Public perception of nuclear power is negative.
Costs of building and safely decommissioning are very high.
Cannot react quickly to changes in electricity demand.
awncer this question
https://brainly.com/question/24294790?utm_source=android&utm_medium=share&utm_campaign=question this is the other page of this paper awncer this also plz
Answer:
YES NO YES
Explanation:
Which of the following workers is a maintenance staff member?
The Punnett square illustrates a cross for color of the flower.
Based on the phenotypes and genotypes of these offspring. It is clear that purple flower color allele is
and the parents are
dominant
polygenetic
recessive
ntum. All rights reserved.
hp
Answer:
All right reserved
Human skin color is a good example of polygenic (multiple gene) inheritance. Assume that three "dominant" capital letter genes (A, B and C) control dark pigmentation because more melanin is produced. The "recessive"alleles of these three genes (a, b & c) control light pigmentation because lower amounts of melanin are produced.
hope it will help
Here, from the cross of the purple and white flower, all offspring are purple, which indicates that the purple color is dominant in nature and is present in Option A.
What is Punnett Square?The Punnett square is a tool used to predict the probability of offspring inheriting specific alleles from their parents. If all of the offspring exhibit the same phenotype (such as purple flower color), it is likely that the parents both carried at least one dominant allele for that trait. This would mean that the purple flower color allele is dominant. Here, the parents are both purple and white, so all the offspring are dominant in nature.
Hence, from the cross of the purple and white flower, all offspring are purple, which indicates that the purple color is dominant in nature and is present in Option A.
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complete question is below
The Punnett square illustrates a cross for color of the flower (purple- parent, white -parent). Based on the phenotypes and genotypes of these offspring (all purple), it is clear that purple flower color allele is
A.) Dominate
B.)polygenetic
C.) recessive
ASAP
What is a benefit of a plant having Chlorophyll and Carotenoids?
A. The plant can absorb energy from multiple wavelengths at once.
B. They can absorb both sunlight and moonlight .
C. It is not a benefit.
D. If one becomes damaged, the other can take over.
Answer:
Carotenoids have two important functions in plants. First, they can contribute to photosynthesis. They do this by transferring some of the light energy they absorb to chlorophylls, which then use this energy to drive photosynthesis. Second, they can protect plants which are over-exposed to sunlight. but the letter answer I don't know
The benefit of a plant having Chlorophyll and Carotenoids is that plant can absorb energy from multiple wavelengths at once. Option A is the right answer.
What are chlorophyll and carotenoids?Chlorophyll is the green pigment that is responsible for the green color in the leaves of plants. Carotenoid on the other hand is a yellow, orange, and red color pigment that is produced in plants, algae, and some other forms of bacteria.
Chlorophyll actively absorbs light from wavelengths in the range of blue to red.Chlorophyll poorly absorbs light from the green range.Hence, carotenoids absorb light in wavelengths that are ineffective by chlorophyll such as the blue-green range to green range.To learn more about chlorophyll and carotenoids, refer:
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What is wrong with this model of the atom?
n P+
Cloud Region
A. The protons are in the wrong place.
B. The neutrons are in the wrong place.
C. The electrons are in the wrong place.
D. The protons and neutrons are in the wrong place.
Answer:
A
Explanation:
The atomic massof an element is defined as (the SUM) of masses of protons and neutrons in an atom
A sealed Ecosphere is able to perpetually sustain life until what happens? A. Oxygen is depleted. B. The producers use up all the carbon dioxide (CO2). C. Energy makes it to the highest trophic level. D. Necessary minerals become locked in deposits.
Answer:
D. Oxygen is DEPLETED
Explanation:
iT NEEDS OXYEN TO SUSTAIN IN A CLOSED ENVIRONMENT
A sealed ecosphere is able to constantly continue life until oxygen is depleted. The correct option is A.
What is a sealed ecosphere?A sealed ecosphere is a name given to a sealed ecosystem designed and made by Ecosphere Associates, Inc. These are miniature ecosystems in glass containers.
These miniature ecosystems continuously need oxygen to survive, because it contains small plants or mosses, or algae to grow inside.
Thus, option A. Oxygen is depleted is correct.
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We have all heard about earthquakes or the cyclones that attack the coastal regions. Think of as many different ways as possible in which people's health would be affected by such a disaster if it took place in our neighbourhood. (a) How many of these health -related events would occur long after the actual disaster, but would still be because of the disaster? (b) How can it affect the life of people if in case of a pandemic?
Answer:
The disease spread to the neighbourhood.
Explanation:
If the disaster such as earthquake and pandemic etc occurs in the neighbourhood so it also affected the health of the people of that region as well as the people that lives in the neighbourhood. In the case of pandemic, the disease spread to the neighboring area and affect the health of people while on the other hand, in earthquake the people of neighbourhood is also affected if the intensity of earthquake is higher.
What issues, organs, and systems were involved in this process of heavy breathing
Answer:The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system.
Explanation:
All cells are contained within a membrane called the:
A. Cell wall
B. Cytoplasm bilayer
C. Cytosol
D. Phospholipid bilayer
Answer:
Phospholipid bilayer
Explanation:
That is essentially the primary componenent of the cell membrane where phospholipids form two layers.
When does crossing over occur in meiosis
Answer:
Crossing over occurs during prophase I of meiosis before tetrads are aligned along with the metaphase I.
Genetic Code
Project: Asking Questions about the Genetic Code
Active
Instructions
Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your
file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network
folder. Upload each file separately.
Answer:
Following are the steps to the given points:
Explanation:
The instructor has described the current task upload process.The teacher helped children with all resources necessary again for the task.Every learner needs to create a document to upload a project and then select a task from the folder.To add a file, a learner should click the add-on button.what type of transport takes place when a protien allows an ion to enter a cell, but no additional energy is needed to make this happen?
Answer:
The answer is facilitated diffusion. It requires no energy because the ions are traveling down the concentration gradient. Facilitated diffusion is important for the regulation of ions in a cell. It also enables ions to pass across the hydrophobic layer of the cell membrane composed of phospholipids.
Which equation represents fertilization?
haploid + diploid = diploid
diploid + haploid = haploid
haploid + haploid = diploid
diploid + diploid = diploid
Answer:
the answer is (C) haploid + haploid = diploid
Explanation:
edge 2021
Haploid+ Haploid = Diploid represents fertilization. So, the correct option is (C).
What is Fertilization?
Fertilization is defined as the process in which two gametes where one male and one female first form a zygote and then lead to the development of an embryo.
These germ cells are cells that give rise to gametes – either egg cells that are female gametes or sperm cells that are male gametes.
These germ cells are the only cells that can undergo both mitosis and meiosis. These are the diploid cells present in the gonads. After meiosis, haploid gametes are produced. In fertilization two haploid gametes fuse (n+n) and form a diploid zygote (2n)
Thu, Haploid+ Haploid = Diploid represents fertilization. So, the correct option is (C).
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Determine the correct order for the transmission of a signal through the nervous system.
I. Nerve impulse is triggered
II. Neurotransmitters diffuse across synaptic cleft
III. Receptors bind neurotransmitters
IV. Synaptic vesicles release neurotransmitters
A. I, IV, II, III, I
B. II, III, IV, I
C. IV, I, II, III, IV
D. I, III, IV, III, II, III
Answer:
A. I, IV, II, III, I
Explanation:
Living system can be defined as the internal systems of organisms and how materials circulate within organisms.
Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.
Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.
Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, metabolism, digestion, etc.
A sensory system can be defined as components of the central nervous system (CNS) which comprises of the brain, neural tissues or pathways and sensory neurons responsible for sensory functions, perception and processing sensory informations such as sound, light, heat, etc.
Basically, the central nervous system (CNS) interprete the neural signals that are generated from stimuli that are detected by the sensory system. The five (5) main sense organs in the sensory system are: skin, tongue, ears, nose and the eyes.
Generally, the nervous system found in living organisms such as humans, comprises of two (2) major components or systems; a central nervous system (CNS) and a peripheral nervous system (PNS).
The correct sequential order for the transmission of a signal through the nervous system;
1. Nerve impulse is triggered.
2. Synaptic vesicles release neurotransmitters.
3. Neurotransmitters diffuse across synaptic cleft.
4. Receptors bind neurotransmitters.
5. The whole process is started all over again when the nerve impulse is triggered.
Answer:
A. I, IV, II, III, I
Explanation:
Why are sponges considered as parazoa
Answer:
Sponge parazoans are unique invertebrate animals characterized by porous bodies. This interesting feature allows a sponge to filter food and nutrients from water as it passes through its pores.
Which of the following shows the correct order in which sound information travels through the ear?
O Ossicles, eardrum, cochlea, cochlear nerve
Eardrum, ossicles, cochlear nerve, cochlea
O Eardrum, ossicles, cochlea, cochlear nerve
O Ossicles, eardrum, cochlear nerve, cochlea
The following shows the correct order in which sound information travels through the ear is Eardrum, ossicles, cochlear nerve, cochlea.
What is the cochlear nerve?The cochlear nerve, additionally called the acoustic nerve, is the sensory nerve that transfers auditory records from the cochlea (auditory vicinity of the internal ear) to the brain. It is one of the many portions that make up the auditory system, which permits powerful listening to.
We pay attention while sound waves journey thru the air to our eardrum, throughout our center ear, into our internal ear, and sooner or later to the auditory facilities of our brain. Our ears are constantly on and are constantly sporting sounds alongside this listening-to pathway.
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Answer:
Eardrum, ossicles, cochlea, cochlear nerve
Explanation:
When plasma Ca concentration decreases... 1. Parathyroid hormone level increases 2. Parathyroid hormone level decreases 3. Ca and phosphate reabsorption increases 4. Ca and phosphate reabsorption decreases 5. Ca reabsorption decreases and phosphate reabsorption increases 6. Ca reabsorption increases and phosphate reabsorption decreases
Answer:
2. Parathyroid hormone level decreases
4. Ca and phosphate reabsorption decreases
Explanation:
When plasma Ca concentration decreases, the action of Parathyroid hormone level decreases which leads to Calcium and phosphate reabsorption decreases. Parathyroid hormone is responsible for the increase of calcium and phosphorus in the blood when there is low level in the blood so when the re is huge amount of calcium and phosphorus in the blood, the Parathyroid hormone activity decreases which decrease the reabsorption of calcium and phosphorus decreases.
what are the types of tropism
Answer:
Forms of tropism include phototropism (response to light), geotropism (response to gravity), chemotropism (response to particular substances), hydrotropism (response to water), thigmotropism (response to mechanical stimulation), traumatotropism (response to wound lesion), and galvanotropism, or electrotropism (response to electric current).
Tropism is a response to certain stimuli. A positive tropism is moving towards the stimuli, while a negative tropism is moving away from a stimuli.
Positive Phototropism - Growing towards light
Negative Phototropism - Growing away from light
Positive Thigmotropism- Moving towards touch
Negative Thigmotropism- Moving away from touch
Positive Hydrotropism - Growing towards water
Negative Hydrotropism - Growing away from water
Positive Gravitropism - Growing towards ground
Negative Gravitropism - Growing upwards
The corpus callosum separates the brain into two halves. separates the brain into two halves. is a large network of neurons on the cerebral cortex. is a large network of neurons on the cerebral cortex. is a thick band of neural fibers enabling communication between the two brain hemispheres. is a thick band of neural fibers enabling communication between the two brain hemispheres. describes the hemispheres of the brain
Answer:
is a thick band of neural fibers enabling communication between the two brain hemispheres.
Explanation:
A brain can be defined as an organ of soft nerve tissue that is found in the skull of vertebrates and it's typically responsible for the coordination of nervous activities, intellect and sensation.
The human brain consists of various sections and these includes;
I. Anterior Cingulate Cortex (ACC) which resembles a bow or collar surrounding the frontal part of the corpus callosum. This is the frontal part of the cingulate cortex which helps to make complex cognitive functions such as impulse control, decision-making, emotions and empathy.
II. Ventral prefrontal cortex in humans are interconnected with the brain and are responsible for the processing of risk, empathy, fear and social decision-making
III. The Cerebral Cortex: this part of the brain primarily comprises of grey matter, foldable sheets of neurons and forms its outermost layer. Therefore, cerebral cortex is known as the outermost layer of the brain (cerebrum) and thus, makes up half of its weight. It is about 2.5 millimeters in thickness and as such it's able to fold.
The corpus callosum is a large, thick band of C-shaped neural fibers found beneath the cerebral cortex and it's saddled with the responsibility of enabling communication between the two brain hemispheres i.e the right hemisphere and the left hemisphere.
why is the nucleus important to the cell
Answer:
Because it controls all the activities in the cell
The nucleus is considered to be one of the most important structures of eukaryotic cells as it serves the function of information storage, retrieval and duplication of genetic information. It is a double membrane-bound organelle that harbours the genetic material in the form of chromatin.
plz mark brainliest
Match the terms to their definition.
the number of individual
organisms born into a population in a given year
the movement of individuals out of a population
the number of individual organisms that die in a population in a given year
the movement of individuals into a population
Match the terms to their definition
The number of individual organisms born into a population in a given year is called birthrate.The movement of individuals out of a population is called emigration.The number of individual organisms that die in a population in a given year is called deathrate.The movement of individuals into a population is called immigration.Hope it helps you! ＼(^ᴥ^)／
Answer:
1 4 3 2
Explanation:
easy biology question below first correct answer gets brainliest
Answer:
Explanation:
Following the rule of "like dissolves like", the hydrophilic head of the phospholipid molecule dissolves readily in water. The long fatty acid chains of a phospholipid are nonpolar, and thus avoid water because of their insolubility
For guinea pigs, the allele for short hair (H) is dominant to the allele for long hair (h) and the allele for white claws (C) is dominant to the allele for black claws (c). A male guinea pig is mated with a female guinea pig that is heterozygous for both aforementioned traits. Of all of the offspring have short hair and around half have black claws, what is the most probable genotype of the father
Answer:
The father most likely has HH and cc as its genotypes.
Explanation:
See the attached image, please!
16 points!
Answer:
Explanation:
From what I can see I think......
16) True
17) False
Why is the ability to bioluminesce beneficial? signals may be sent out to communicate an interest in mating it can camouflage the underbelly of the fish by lighting it up the same color as the sea surface so that the fish will be almost invisible to predators swimming below food may be found even in the darkest parts of the ocean or at night the light may momentarily distract predators, allowing the organism a chance to escape all of the above
Answer:
The correct answer is - All of the above
Explanation:
Food is produced at every part of the earth as it may be found even in the parts that are darkest at night or at the part of ocean. Communication between mates can be done by signals that may sent to show interest in mating, Camouflage is the way to escape or hide by use of the light that may momentarily distract predators as it can camouflage the underbelly of the fish by lighting it up the same color of as the sea surface to make it invisible.
the systems involved in water content regulation are ________.
Answer:
kidneys, hypothalamus, and endocrine glands.
Explanation:
I don't think theres anything to explain rlly hope this is correct tho
