Scenario: You are a research scientist and are working with eukaryotic cells obtained from a newly discovered organism, Oviductus oblatus. You want to determine if this organism’s cells are similar in structure an organization to other eukaryotic cells. You collect the cells and examine them using a light microscope and a cell stain in an attempt to see the internal cellular structures. Lo and behold you are happy because you are able to see particular structures using this method. You find the following features: Organism’s cell are able to move Internal structures appears to be made of protein fibers Internal structures protein fibers measured 7.0 nanometers diameter Internal structures protein fiber appears to be two strands intertwined with each others Based on this information you come to the conclusion that you have been able to identify in these cells the structure of ____. You conclude the cells of Oviductus oblatus are indeed (name the main type of cell it appears to be) ______ cells. Discussion: Post your answers for the above scenario and include evidence that supports your choice
Answer:
Based on this information you come to the conclusion that you have been able to identify in these cells the structure of microfilaments or actin filaments. Oviductus oblatus are indeed eukaryotic cellsExplanation:
In eukaryotic cells, the cytoskeleton is composed of three well defined filamentous structures: microtubules, microfilaments, and intermediate filaments. Each of these filamentous structures is a polymer of proteinic subunits united by weak, not covalent connections.
The microfilaments are the thinnest of the three structures. They have a diameter of 7 nanometers and are composed of many proteinic monomers united. This monomeric protein is called actin. Many monomers get combined to form a structure that assembles a double helix.
Due to the fact that these microfilaments are made of actin monomers, they are also known as actin filaments.
Actin filaments have directionality which means that their extremes have different structures.
In eukaryotic cells, genes that codify for actin microfilaments are highly conserved in all organisms, which is why they are often used as molecular markers for different studies.
Which type of stem cell is described below?
stem cells are available from a variety of sources, including blood from an umbilical cord, or cells in the
placenta, the bone marrow, and even human fat.
Answer:
Multipotent Stem Cells
Explanation
these are stem cells that can differentiate to multiple but limited cells / tissues
what is is a specific version of a gene on a homologous chromosome that has a corresponding version of a similar gene on a homologous chromosome. For example, hair color gene (ie. red from mom) will be on one homologous chromosome and a possibly different version of hair color gene (ie. black from dad) will be on the other corresponding homologous chromosome.
Answer:
This statement is partially true.
Explanation:
There are many phenotypic features that display a quantitative mode of inheritance and exhibit a continuous range of variation. Hair color is controlled by different genes that work together to express this trait. In consequence, this trait has a polygenic mode of inheritance, where a particular phenotype depends on both additive and dominance genetic effects. The most important gene associated with the hair color is Melanocortin 1 Receptor (MC1R), which is involved in the biosynthesis pathway that controls the synthesis of melanin.
Animals and dogs Plants absorb ____ from the atmosphere through _____
ASAP PLEASE
1. oxygen
2. nose and roots
The human body’s nervous system is made up of?
Answer:
The central nervous system is made up of the brain and spinal cord.
biology is important in
Answer:
it’s Important reasons for studying biology are to understand how cells and organisms work. It involves the study of life and it is very important as it tells us about the natural world. Biology tells us about our body, helping us to develop cures and treatments for many diseases.
Explanation:
the other ppl said it
While working in a genetics lab over the summer, you isolated a true-breeding strain of wingless Drosophila. After sharing your results with your mentor, you learn that six other true-breeding strains of Drosophila with the same mutant phenotype have been isolated independently in your lab. Your mentor asks you to determine if the mutants belong to the same complementation group. What is true about flies that belong to different complementation groups? What would be the outcome of crossing two strains of wingless flies that belong to different complementation groups?
Answer:
=> There will be mutation of gene in each strain.
=> The offsprings are wild type.
Explanation:
So, we are given the following main or Important information or data which I going to assist us in solving this particular Question or problem:
=> There is an isolated a true-breeding strain of wingless Drosophila.
=> " six other true-breeding strains of Drosophila with the same mutant phenotype have been isolated independently in the lab."
Therefore, the flies that belong to different complementation groups will cause MUTATION TO OCCUR ON THE SAME GENE.
Mutation will occur because here we have dual but different genomes and when you take a look at these genomes they both have a trait of recessiveness and this combination of the genomes will cause the mutation.
Quick note: on the strain, occurence if different mutation might or might not occur.
You are working with an amateur bodybuilder who is 12 months out from a bodybuilding competition. Design a year-long periodized training program for the athlete with the objective of optimizing the client’s physique at the time of the competition. The training program should include the following:A list of assessments to be performed at the onset of the training programA warm up and cool down for each training dayA detailed year-long periodized training program including specific exercises, sets, repetitions, suggested rest times, etc. The program should include a Foundational Training phase, a Hypertrophy phase, and a Cutting phase.An explanation as to why you made your recommendations for each phase of training.Nutrition and supplement recommendations to support the bodybuilder during each phase of training.
Hitchhiker's thumb is inherited via two recessive alleles and causes a hyperextensibility of the thumb. The dominant allele causes a straight thumb phenotype. Predict the phenotypic and genotypic ratios from the following cross.
One parent with Hitchhiker's thumb crossed with a Straight thumbed individual who had a parent with Hitchhiker's thumb.
a. Phenotypic and Genotypic 1:1
b. Phenotypic 2:1 and Genotypic 1:1
c. Phenotypic 1:1 and Genotypic 2:1
d. Phenotypic and Genotypic 3:1
Answer:
a. Phenotypic and Genotypic 1:1
Explanation:
Two recessive alleles are required in order to be phenotypically affected for Hitchhiker's thumb. Hence, the genotype of the parent with Hitchhiker's thumb would be homozygous recessive.
Assuming the trait to be represented by the allele h, the genotype of the parent with Hitchhiker's thumb would be hh while the genotype of an individual with straight thumb who had a parent with Hitchhiker's thumb would be heterozygous, Hh.
Crossing the two individuals.
hh x Hh
Progeny: Hh hh Hh hh
Hh - Straight thumb
hh - Hitchhiker's thumb
Hence, the genotypic ratio is 1:1 while the phenotypic ratio is also 1:1.
The correct option is a.
What do eukaryotes cells have that prokaryotes do not have
Answer:
Prokaryotic cells are less structured than eukaryotic cells. They have no nucleus; instead their genetic material is free-floating within the cell. They also lack the many membrane-bound organelles found in eukaryotic cells. Thus, prokaryotes have no mitochondria. I hope this helped.
IF YOU DO NOT MIND CAN YOU MARK ME BRAINLIEST?Answer:
true cell
Explanation:
membrane bound organelles such as the nucleus
Why is ATP used as an active energy source over glucose?
Earth’s rain forests are the biomes with the greatest biodiversity because they have
A. Very little moisture
B. Primary disturbances
C. Cyclical Disturbances
D. Stable ecosystems
Answer:
c . cyclical disturbances
Stable ecosystem your welcome
what is evapraratio
Answer:
Evaporation is the process by which water changes from a liquid to a gas or vapor, in other words evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.
The maximum water vapor that air can hold at 30°C is about 30 grams/cubic meter. If the humidity of the air is currently 6 grams/cubic meter at
the same temperature, the relative humidity is %.
Answer:
20%
Explanation:
6 ÷ 30 × 100
1÷5 × 100
20%
Why are scientists concerned about the use of the Bt toxin, which is used to kill insects, in genetic engineering?
It’s because they might not want insects to die.
They might need them for some work
E.g
Bees are used to make honey
What causes an ecosystem to move from a primary successional stage towards a relatively-stable mature ecosystem?
Answer:
The correct answer is "secondary succession, an ecological succession step where an area previously occupied by living beings is disrupted".
Explanation:
In ecological succession, an ecosystem changes and develops through a series of steps. The first step, is the primary successional stage where rocks or other sedimentary structures are colonized by microorganisms. The second step, where the ecosystems changes towards a relatively-stable mature stage, occurs when an area previously occupied by living beings is disrupted. This step is named secondary succession, and the most clear example of this phenomena occurs when wildfire clears oak and hickory forests.
Which of the following is true? Group of answer choices In the brain, neurons are more abundant than neuroglia. An action potential never occurs in dendrites. When a neuron is stimulated, Na+ gates open and allow Na+ to exit the cell. In a myelinated fiber, only the initial segment in the trigger zone has voltage-regulated channels. Norepinephrine is a neuropeptide.
Answer:
The true statements are:
An action potential never occurs in dendrites.
Norepinephrine is a monoamine.
Explanation:
In the following question only two statements are true that are; an action potential never occurs in dendrites as it occurs in nerves to send signals from cell body and axon and transmit it.
The second correct statement is Norepinephrine is a monoamine as these are particular neurotransmitters dopamine, serotonin, also known as catecholamines sometimes.
Thus, the correct answer is :
An action potential never occurs in dendrites.
Norepinephrine is a monoamine.
soil erosion soil erosion can be prevented by the following ways except A. mulching B. erracing C. strip cropping D. deforestation E. planting of cover crops
Answer:
Answer is D, Deforestation
Explanation:
Hope this helps
Have a nice day :D
Which of the following statements is FALSE?
a.The Moon usually sets about 12 hours after it rises.
b.The Moon rises in the west and sets in the east.
c.The Full Moon rises around sunset.
d.The Moon takes a little more than 29 days to orbit the Earth.
The answer is b
Answer:
the answer is b
Explanation:
the sun sets in the south
Which species is likely to exhibit random dispersion?
A.
rushes that grow on the edges of bodies of water
B.
orchid plants that grow on the branches of a particular tree species
C.
squirrels that actively defend their territory against other squirrels
D.
frogs that live along the edges of ponds and streams
E.
sweetgum, a tree species with wind-dispersed seeds
Answer:
E
Explanation:
E because....
The other options mention species that occupy niche environments and would therefore definitely not be randomly dispersed. Rushes and frogs would be found along the edges of water bodies, squirrels would be found within appropriate environments, which would be acorn tree forests and orchid plants also occupy a particular tree.
The correct option is E.
What is random dispersion?
In random dispersion, individuals are distributed randomly, without a predictable pattern. An example of random dispersion comes from dandelions and other plants that have wind-dispersed seeds.
Is random dispersion rare?In natural populations, random dispersion is rare, while clumped dispersion, which we'll focus on in this lesson, is the most common pattern. Clumped dispersion is often due to an uneven distribution of nutrients or other resources in the environment. It can also be caused by social interactions between individuals.
Learn more about random dispersion here https://brainly.com/question/8827761
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MULTIPLE CHOICE
Question 15
If a parent cell has 46 chromosomes, how many
chromosomes will be present in each daughter cell after
mitosis?
А
12.
B
23
46
D
9
2
Answer:
B
Explanation:
Its 23 in mitosis cell division
A new multicellular organism has been discovered, and scientists want to study the organism’s cell structures, including organelles. Which microscope should they use?
Every living organism begins life as a single
Answer: cell
Explanation:
Every living organism begins life as a single cell, usually called a zygote.
What are examples of harmful mutations
Answer:
One example of a harmful mutation is an animal's different coloring than others in its species. If a deer was albino, it would have a much harder time blending in, escaping predators and most likely have trouble finding a mate.
Explanation:
The stimulus interval has a profound effect on the contraction force of the muscle. In your own words explain what happened when the muscle was stimulated in rapid succession. At which interval did the volunteer's muscle twitches begin to merge together (summate)
Answer:
The skeletal muscle is stimulated by means of action potentials that are caused by the neuromotor plate. These action potentials are one after the other and can become cumulative once the muscle fibers pass the refractory phase of the action potential.
The refractory stage is that stage in which action potentials are not admitted, therefore where the muscle fibers do not accept stimuli to contract.
Once this refractory stage is over, more action potentials can be admitted, which would be summative and the muscle fiber would contract with greater power.
Explanation:
If a muscle is repeatedly stimulated, the contraction will be weaker or the muscle will fatigue more easily, triggering muscle failure.
If the muscle is stimulated with a longer pause between contraction and contraction, the action will be performed with more power.
The Bartholomew J, an American shipping vessel, docks at a port in Australia. A small school of fish makes its way from the bilge, a hollow area under the ship that collected seawater, into the water of the dock. It is a new species to the area and begins to thrive. What term is used to describe this species?
The species of fish is referred to as a(n) BLANK
species.
Answer:
hello it might be invasive I think if not I am sorry
Answer:
Invasive.
Explanation:
Because tending to spread especially : tending to invade healthy tissue invasive cancer cells. 2 : involving entry into the living body (as by incision or by insertion of an instrument) invasive diagnostic techniques. Other Words from invasive.
is the relationship linear,exponential, or neither? (9,13) (14,16) (19,19) (24,22)
Answer:
Linear
Explanation:
If you were to put this in a table, the rate of change would be constant
1. An oak tree is adapted to grow in a wood. Which of the following is NOT
true?
A)It has a large root system to absorb water and minerals
B)It has a large root system to anchod the tree
C)It has plenty of leaves to absorb sunlight
D)It loses its leaves in autumn to save food
Answer:
(B) it has a large root system to anchored the tree
All animals need food to survive. Which of these is a use for food? A. growth B. motion C. body repair D. all of these
Answer:
D
Explanation:
The food that animals need to survive is constructed into energy that is used for
growth
ex. humans getting taller
motion
ex. energy to run
body repair
ex. repairing ripped tissues
The
called the pleura.
are enclosed in a membrane
The
are branch-like extensions
found in the lower respiratory system.
Identify the structures labeled in the diagram to
the right
Label A
A
In the 1930s, medical journal
articles linked asbestos to cancer.
Answer:
Lungs
bronchioles
alveoli
positive impact
Explanation:
Answer:
The -lungs- are enclosed in a membrane called the pleura.
The -bronchioles- are branch-like extensions found in the lower respiratory system.
-alveoli- Label A
-positive impact- In the 1930s, medical journal articles linked asbestos to cancer.
Explanation:
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love yall <3 alright take care *mwah*