The DNA has a shape of double helix which is microscopic and is thus invisible to the bare eye.
DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.It is microscopic and is thus invisible to the bare eye.
Thus, the DNA is invisible to the bare eye.
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Which properly traces the movement of chromosomes during mitosis?
Mitosis consists of sequential stages starting with prophase and ending with cytokinesis, during which the chromosomes condense, attach to spindle fibers, align at the metaphase plate, are pulled apart during anaphase, and are separated into two new nuclei in telophase.
Explanation:To properly trace the movement of chromosomes during mitosis, one must understand the sequential stages involved in this process. Mitosis is a critical aspect of cell division that ensures each daughter cell receives an exact copy of the parent cell's chromosomes.
Prophase: Chromosomes condense and become visible. The mitotic spindle begins to form, but the nuclear envelope is still intact.Prometaphase: The nuclear envelope breaks down, allowing spindle fibers to attach to kinetochores on the chromosomes.Metaphase: Chromosomes align at the metaphase plate, with sister chromatids facing opposite poles.Anaphase: Cohesion proteins dissolve, and sister chromatids are pulled apart by the spindle fibers toward opposite poles.Telophase: Nuclear membranes start to reform around separated sister chromatids, now individual chromosomes, at the poles of the cell.Cytokinesis: The cytoplasm divides, creating two daughter cells, each with a complete set of chromosomes.Which of the following weather conditions would result in the greatest rate of evaporation from the Earth's surface?
What is mitosis, HURRY PLEASE
When we encounter a stressor, the _____ nervous system accelerates the automatic processes in our body, and after the stressor is over, the _____ nervous system returns us to normal functioning?
Answer: The correct answers for the blanks are-
Sympathetic nervous system and
Parasympathetic nervous system respectively.
Explanation:
The sympathetic nervous system is also referred as '' fight or flight'' system of body as it prepares body for an intense activities during any stressful situation.
It accelerates the processes of body in a way that either body needs to "fight" or run away in response to a particular stressor.
On the other hand, the parasympathetic nervous system is the ''rest and digest'' system of the body. It brings calm and relaxes the body by conserving energy through slowing down the processes taking place. So, when the stressor is gone, the body relaxes and comes back to normal function through parasympathetic branch.
You have figured out how pulmonary arteriole vasoconstriction could lead to high vascular resistance and therefore high blood pressure in the pulmonary circuit. this high resistance is going to make it harder for the heart to push blood through the vessels, overworking the heart and leading to heart failure. which side of the heart is most likely to be overworked?
The approximate transfer of energy from one trophic level to the next higher trophic level is ________.
If an organism has 6 haploid chromosomes, how many chromosomes are present? 6 12
The number of chromosomes in a haploid cell, which includes an egg and sperm, is half that of a diploid cell, or a normal cell. Therefore, a haploid cell would have 12 chromosomes.
What is Haploid chromosomes?A cell with a single set of chromosomes is called haploid. The number of chromosomes in sperm or egg cells, often known as gametes, is also referred to as haploid.
In humans, gametes are haploid cells with 23 chromosomes—one of each chromosomal pair found in diplod cells—and are hence haploid. The haploid number, commonly known as n, is used to indicate the number of chromosomes in a single pair. n = 23 for people.
Half of the chromosomes found in somatic cells, or the body's typical diploid cells, are found in gametes. Meiosis, a type of cell division that cuts the number of chromosomes in a parent diploid cell in half, produces haploid gametes.
Therefore, The number of chromosomes in a haploid cell, which includes an egg and sperm, is half that of a diploid cell, or a normal cell. Therefore, a haploid cell would have 12 chromosomes.
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An animal experiences an injury to its head. it then starts to eat uncontrollably. what part of the brainis probably injured?
To find the distance to an earthquake’s epicenter, scientists _______________________________.
analyze the arrival times of the P waves and surface waves
analyze the arrival times of the P waves and S waves
analyze the arrival times of the surface waves and S waves
analyze the arrival times of the Love waves and Rayleigh waves
You respond to the scene of a motor vehicle collision. upon arrival, you find the driver, a young female, sitting on the curb. she is confused, is in obvious respiratory distress, and has pale, moist skin. as your partner manually stabilizes her head, you perform a primary assessment. after performing any immediate livesaving treatment, you should:
In the given scenario, after performing any immediate lifesaving treatment, one should perform a secondary assessment to identify any additional injuries or medical conditions.
The primary assessment is used to identify and treat any life-threatening conditions, such as airway obstruction, breathing problems, or circulation problems.
Once primary issues are resolved, a secondary assessment is performed to identify to check whether there is any other injuries or medical conditions is present that may require treatment.
During the secondary assessment, one will perform a head-to-toe exam to look for any signs of injury. You will also obtain a detailed medical history and gather information about the events leading up to the accident.
Therefore, performing secondary assessment is important after performing primary assessment.
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32. Explain the relationship between the central nervous system and the peripheral nervous system. How do
they work together to accomplish a task? (4 points)
The nervous system develops throughout the human body and includes very different elements in their forms and functions. It is divided into two complementary systems, the Peripheral Nervous System (PNS) and the Central Nervous System (CNS).
The SNP includes all the nerve tissue that runs through the body. It has a dual function: to receive information by sensory sensors and transmit them to the CNS, and to activate motor functions controlled by the CNS. It consists of two parts, that somatic, activating the skeletal muscles and that, autonomous, attached to the viscera.
The CNS is the brain and spinal cord. It is the center of information processing.
Which of these features would you expect to see on a homo heidelbergensis skull?
What is the main difference between an autotroph and a heterotroph?
A.
A heterotroph only consumes plant matter whereas an autotroph eats both plants and animals.
B.
A heterotroph is able to produce its own food whereas an autotroph must consume other organisms for energy.
C.
An autotroph is able to produce its own food whereas a heterotroph must consume other organisms for energy.
D.
An autotroph only consumes plant matter whereas a heterotroph eats both plants and animals.
How many synapses are crossed in a single reflex arc during a muscle stretch reflex?
In a typical muscle stretch reflex, two synapses are crossed: one between the sensory neuron and the spinal cord and another between the spinal cord and the motor neuron.
Explanation:In the case of a muscle stretch reflex, typically only two synapses are crossed. For example, when a muscle is stretched, signals are sent to the spinal cord via sensory neurons (first synapse). In the spinal cord, these sensory neurons synapse with motor neurons (second synapse) which then send signals back to the muscle causing it to contract and resist the stretch.
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Calories are units of heat that express the energy value of food.
a. True
b. False
If transcription occurred from left to right, which strand is the template strand? if transcription occurred from left to right, which strand is the template strand? 5' - tatgcagcacatt - 3' 5' - atacgtcgtgtaa - 3' 3' - atacgtcgtgtaa - 5' 3' - tatgcagcacatt - 5'
Final answer:
The template strand for transcription occurring from left to right is 3' - tatgcagcacatt - 5', as RNA polymerase synthesizes RNA in the 5' to 3' direction by reading this template strand in the 3' to 5' direction.
Explanation:
If transcription occurs from left to right on a DNA segment, the template strand will be the one running in the 3' to 5' direction because transcription proceeds in the 5' to 3' direction. Looking at the provided sequences, the template strand is 3' - tatgcagcacatt - 5' since transcription occurring from left to right would involve polymerase moving along this strand in the 3' to 5' direction while synthesizing RNA in the 5' to 3' direction.
During this process, adenine (A) on the DNA template strand dictates the addition of uracil (U) in RNA, thymine (T) will be transcribed as adenine (A), and cytosine (C) pairs with guanine (G) as usual.
The effects of the sympathetic nervous system are divergent, meaning that a single stimulus can have an effect on a large number of targets. in other words, when the sns is activated, all of the organs it innervates are stimulated. this does not occur in the parasympathetic system. why?
Which three human activities lead to a loss of terrestrial habitat? a.conservation b.farming c.deforestation d.construction
If there was a large oil spill close to shore, which method would be deployed to prevent a large scale impact on the wildlife?
Answer:
Booms
Explanation:
I just took the test.
If there was a large oil spill close to the shore, the method which would be deployed to prevent a large scale impact on the wildlife are the floating barriers which are mainly booms.
What are Floating barriers?Floating barriers are also referred to as the boom. These are the devices which are placed in the waterbody to control and also contain oil, floating debris, invasive aquatic plants, trash, silt, sediment, and enough turbidity. A floating barrier can be installed either temporarily or permanently in a shore or wildlife.
The most common type of the equipment which is used to control the spread of oil is floating barriers are called as the booms. Containment booms are also used to control the spread of the oil components to reduce the possibility of polluting the shorelines and other resources, as well as to concentrate the oil in thicker surface layers in the shore and also making recovery easier.
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Choose all the answers that apply. The mantle _____. is the thinnest layer is the thickest layer is the hottest layer is made of solid rock sometimes breaks through the crust
Answer:
the thickest layer, the hottest layer
Explanation:
Match each description below with the cell type it characterizes. cell types may be used more than once or not at all.
a. melanocyte
b. keratinocyte
c. fibroblast major cell type found in the dermis of the skin; its primary function is to secrete extracellular matrix.
Describe the role of bone morrow in the immune system. Explain why someone who has a genetic disorder that does not allow their bone marrow to do its job may be helped by a bone marrow transplant.
Each of two parents has the genotype red divided by brown, which consists of the pair of alleles that determine hair color, and each parent contributes one of those alleles to a child. assume that if the child has at least one red allele, that color will dominate and the child's hair color will be red.
Q1) List the different possible outcomes. Assume that these outcomes are equally likely.
the dominant allele - red (R)
recessive allele - brown (r)
both parents are heterozygous, meaning each of them have both alleles. one allele from each parent will be passed on to the child. therefore the child will have total of 2 alleles, one allele from each parent.
Parents R/r x R/r
possible outcomes - R/R R/r r/R r/r
dominant allele is when at least one allele being there in the genotype will express the corresponding phenotype. Recessive allele is when both alleles need to be recessive for it to be expressed.
outcomes:
red - R/R , R/r, r/R and brown - r/r
Q2) What is the probability that a child of these parents will have the brown divided by brown genotype?
There are 4 outcomes possible as stated in the previous question. From these 4 outcomes, we are being asked to calculate the probability of child having the genotype r/r. both alleles should be brown colour.
the 4 outcomes - R/R , R/r, r/R, r/r
as brown is the recessive allele, both alleles need to be brown for it to be expressed. only one of these 4 outcomes have r/r
Probability of r/r - 1/4 = 0.25
Q3) What is the probability that the child will have red hair color?
as red is the dominant allele, at least one of the alleles being present would express the red phenotype. from the 4 outcomes ;
R/R , R/r, r/R, r/r - three of these have at least one R allele -R/R, R/r, r/R
therefore in three of these outcomes, red will be expressed.
Probability of red being expressed - 3/4 = 0.75
He primary function of the rectum is to ____.
a. store digestive hormones until they are needed
b. absorb excess water from waste materials
c. store waste materials prior to evacuation
d. absorb minerals from waste materials
e. control functioning of the colon
Assessment of a term neonate at 8 hours after birth reveals tachypnea, diminished femoral pulses, and poor lower body perfusion. the nurse notifies the health care provider (hcp) based on the interpretation that these symptoms are associated with which complication?
This is a medical condition in which the aorta, the largest blood vessel that leaves the heart, contracts. This blood vessel is tasked with carrying oxygenated blood from the heart to the rest of the body. Also known as Aortic narrowing, this medical condition can be identified by symptoms like tachypnea, diminished femoral pulses, and poor lower body perfusion.
why is the moon visible?
A) It gives off light
B) Earth Lights it up
C) it reflects sunlight
D) it is on fire
The moon is visible because it reflects sunlight.
What is the moon?The moon is part of the celestial bodies which is known for being a high reflecting surface.
Since the moon is a non luminous object but is able to reflect the light that is incident on it, it then follows that the moon is visible because it reflects sunlight.
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Why is the karyotype for people with Turner syndrome written as 45XO
The number 45 means that the subject has 44 normal autosomal chromosomes (22 chromosomes pairs) plus one (1) good sex chromosome (out of the normal homologous pair). The X0 means that the subject, usually a female, lacks one sister chromosome of the homologous X chromosome pair, or has a partial X sister chromosome.
The proximal end of the ulna illustrates the relationship of form and function. the rounded trochlear notch articulates with the hourglass shape of the trochlea. this forms a joint that allows for ________. the hinge like motion of the forearm the rotational motion of the forearm the curling of the fingers the hyper extension of the forearm
Answer:
Option A, The hinge like motion of the forearm
Explanation:
A hinge joint allows for two motions at a time
a) Flexion - The bending motion
b) Extension - The strengthening motion of arm bones
At the proximal end , the Ulna forms a joint with the humerus and radius of forearm. The Ulna extends to form olecranon (the tip of the elbow) Both Ulna and radius bones are attached with an interosseous membrane that causes movement just like a hinge joint.
Option A is correct
Besides lymph nodes, where would you expect to find proliferating (dividing) b cells?
what are the limitations of the Dissecting Microscope?