Answer:
Biuret solution
Explanation:Just did the lab
A new multicellular organism has been discovered, and scientists want to study the organism’s cell structures, including organelles. Which microscope should they use?
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 immediate pressure of necessity has brightened their
intellects, enlarged their powers, and hardened their
hearts. And looking across space with instruments, and
intelligences such as we have scarcely dreamed of, they
see, at its nearest distance only 35,000,000 of miles
sunward of them, a morning star of hope, our own warmer
planet, green with vegetation and grey with water, with a
cloudy atmosphere eloquent of fertility, with glimpses
through its drifting cloud wisps of broad stretches of
populous country and narrow, navy-crowded seas,
-H. G. Wells, The War of the Worlds, 1898
What can you infer about the narrator from this passage of The War of the
Worlds?
O A. He is smart and educated.
O B. He doesn't care about Earth.
C. He believes in God.
O D. He is afraid of the Martians.
Answer: D- he’s smart and educated
Explanation:
An object is moving east, and its velocity changes from 65 m/s to 25 m/s in 10 seconds. Which describes the acceleration?
8
4 m/s2 in negative acceleration
4 m/s2 in positive acceleration
9 m/s2 in positive acceleration
9 m/s in negative acceleration
Save and Exit
Next
SED
Mark this and return
Answer:
4 m/s2 in negative acceleration
Explanation:
From the question.
Acceleration= change in velocity ÷ time.
V1-V0÷time.
That is final velocity minus initial velocity divided by time.
25-65÷10.
-40/10=4m/s.
The acceleration is -4m/s.
The answer is 4m/s negative acceleration.
Answer:
A
Explanation:
Got it right when submitted
Microscope help!
1. which part of the microscope provides concentration of light coming out of a light source?
a. oculars
b. objective
c. condenser
d. light bulbs on/off switch
e. none of the above
2. what is the total magnification of the cells when using the immersion objective of bright field microscope?
a. 40
b. 10
c. 100
d. 400
e. none of the above
3. the role of the immersion oil is to___
a. prevent the loss of light by refraction
b. make objective gentle touching a slide
c. magnify 1000x
d. concentrate light coming from the bulb
e. none of the above
Answer:
1. Condenser
2. None of the above
3. Magnify 1000x
Explanation:
1. Illuminators provides the stable light source in the microscope. It can be reflected using a mirror for a built in microscope. Condenser is made up of two lenses which helps collect and concentrate light. The light beams passes through the centre of the lenses.
Total magnification is objective magnification × Ocular magnification
It makes the object appear bigger than it is. Any of the objective magnification can be uses to achieve the specific size. Objective ranges from 10-100
Oil immersion makes image appears brighter, they increase the refractive index. It is used with 100x objects to achieve a clearer image.
Why is the Copernicus Revolution significant? Check all that apply
Answer:
Yes. If you're trying to solve a multiple choice question, you'll need to put in the answer choices, but here is what i think.
Explanation:
The Copernican Revolution gives us an important framework for understanding the Universe. The Universe and everything in it can be understood and predicted using a set of basic physical laws. The entire Universe obeys the same physical laws everywhere (and at all times).
Here is a hypothetical situation: An area of the country has received a record amount of rainfall this year coupled with a mild winter and a warm spring and summer. As a result the mosquito population is exceptionally high. Mosquitoes are not pathogens to humans. However, mosquitoes can greatly affect the rate of infection for several types of human pathogens. Pick and describe two pathogens that you should expect to see at higher frequency because of this booming mosquito population.
Answer:
Zika virus and West Nile virus are the two pathogens which causes more diseases due to increase the population of mosquito.
Explanation:
Zika virus belongs to the family of Flaviviridae. Aedes mosquitoes which are active at day time are the carrier of this virus. West Nile virus is also spread through the bite of mosquito. The infected mosquito is the main cause of spreading of this disease. This virus is spreading too fast in the United States of America in the summer season where the population of mosquitoes increases.
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
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
can you used chmical reagents for chromatography and why?
The human body’s nervous system is made up of?
Answer:
The central nervous system is made up of the brain and spinal cord.
is heat involved in producing all three classes of rock.
Answer: yes. metamorphic, sedimentary, and igneous
Explanation:
Sedimentary and igneous rock is transformed into metamorphic rock inside the Earth by heat, pressure, and melting, so heat is involved in producing all three classes of rock.
What are the classes of rock?From eroding parent material, sedimentary rock is created. The source material may be sedimentary, metamorphic, or igneous in origin.
Strong heating causes hot liquid rock (magma) to break through the Earth's surface and solidify as igneous rock. This rock is worn and eroded throughout time, restarting the cycle.
The existing rock must stay solid and not melt in order to produce metamorphic rock. The rock will melt and turn into the lava if there is too much heat or pressure. An igneous rock, not a metamorphic rock, will develop as a result of this. Think about the shape changes in granite.
Therefore, sedimentary and igneous rock is transformed into metamorphic rock inside the Earth by heat, pressure, and melting.
Learn more about rock, here:
https://brainly.com/question/11806367
#SPJ2
Which one ?!!!?!?!?!?!?
Answer:B
Explanation: Mosses are small and usually spreads on the ground like mats thereby avoid direct exposure to sunlight. Palm tree on the other are large and usually grow very tall, hence are expose to maximum sunlight
Name the mandibular motion resulting from the following combinations of muscle contractions: ________
a) B Masseter, B Temporalis, B Medial Pterygoid
b) L Lateral Pterygoid, R Masseter
c) B Lateral Pterygoid, B Medial Pterygoid
d) B Lateral Pterygoid, B Digastric
Answer:
c) B Lateral Pterygoid, B Medial Pterygoid
Mandibular motion is by combinations of B Lateral Pterygoid, and B Medial Pterygoid contraction which controls the mandible's closure, hence option c is correct.
What are muscle contractions?There are several of these, including the masseter and temporalis muscles, which control the mandible's closure; the medial pterygoid muscle, which controls the mandible's closure and lateral movements.
The lateral pterygoid muscle, controls the mandible's opening, deviation to either side, and anterior movement.
The lateral pterygoid muscles on the side that is contralateral to the excursion are contracted to move the jaw to one side (laterotrusion), with the help of the posterior temporalis muscle on the same side (ipsilateral).
Therefore the combination of B Lateral Pterygoid, and B Medial Pterygoid creates mandibular motion, hence option c is correct.
Learn more about muscle, here:
https://brainly.com/question/29024941
#SPJ5
The chemical groups into which hormones can be divided include
what is the answer of this question?
Answer:
(A) temporary allergy to milk products has developed
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.
Animals and dogs Plants absorb ____ from the atmosphere through _____
ASAP PLEASE
1. oxygen
2. nose and roots
True or False: Cells will generally divide when they're too large
Answer:
true
Explanation:
the cell becomes two
Yes, this statement is TRUE cells will generally divide when they're too large
Why do cells divide when they get too big?The larger a cell becomes, the more demands the cell places on its DNA. If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane.
When cells will generally divide?The mitotic phase follows interphase. Mitosis is nuclear division during which duplicated chromosomes are segregated and distributed into daughter nuclei. Usually the cell will divide after mitosis in a process called cytokinesis in which the cytoplasm is divided and two daughter cells are formed.
Learn more about Mitosis here
https://brainly.com/question/12981491
#SPJ2
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.
~~9. Using the appropriate osmotic terms (hypertonic, hypotonic, or isotonic) describe what would happen to each organism in the following settings: on. A single-celled freshwater protist is placed into a beaker of salt water. (3 points) b. A salt-water snail is mistakenly put into a freshwater tank. (3 points) c. A head of lettuce is placed soaked in a sink of salt water. (3 points) d. A bunch of carrots are placed soaked a sink of distilled water. (3 points)
Answer:hh
Explanation:hhh
Answer these questions based on what you learned from the lesson.
are a relatively small group of bacteria that thrive in extreme conditions.
vare a diverse group of bacteria that sometimes make us sick.
Eubacteria are classified by
are round bacterial cells.
are rod-shaped bacterial cells.
are spiral-shaped bacterial cells.
DONE
Intro
The answers for the question are :
ArchaebacteriaEubacteriaShapeCocciBacilliSpirillaBacteriaBacteria are little single-celled living beings. Microscopic organisms are found nearly all over on Soil and are imperative to the planet's biological systems.
Archaebacteria - are a relatively small group of bacteria that thrive in extreme conditionsEubacteria - are a diverse group of bacteria that sometimes make us sick.Eubacteria are classified by Shape. Cocci -are round bacterial cells. Bacilli - are rod-shaped bacterial cells. Spirilla -are spiral-shaped bacterial cells.Learn more about "Bacteria":
https://brainly.com/question/11959239?referrer=searchResults
The answers for the given question should be
Archaebacteria
Eubacteria
Shape
Cocci
Bacilli
Spirilla
What is Bacteria?It is considered as the little single-celled living beings. Microscopic organisms should be found nearly all over on Soil and are considered to be imperative with respect to to the planet's biological systems.
Now
Archaebacteria - should be small group of bacteria
Eubacteria - should be diverse group of bacteria t
Eubacteria should be classified by Shape.
Cocci - should be round bacterial cells.
Bacilli - should be rod-shaped bacterial cells.
Spirilla -should be spiral-shaped bacterial cells.
Learn more about bacteria here: https://brainly.com/question/16568397
What tipe of cactus is this?
Answer:
Hey!
I think it is the San Pedro Cactus!
Explanation:
i have one at home just like that!
HOPE THIS HELPS!!
Answer:
san pedro
Explanation:
A scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature changes significantly? (2 points)
I’ll give you Brainliest and Points !!!!
The answer is A.
Neither B nor C make sense, because in a sensible experiment, we dont try to mess up the results or replace results.
Relaxation of the diaphragm muscle plays a major role in expanding the lungs.
True
False
Answer:
False
Explanation:
You relax the diaphragm muscle by exhaling. When the diaphragm muscle is relaxed, the lungs contract. When the diaphragm muscle expands, the lungs also expand. Therefore, relaxation of the diaphragm muscle does NOT play a major role in expanding the lungs.
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
how are messages carried throughout the human body from the brain to the nervous system
If the current trend continues, can the temperature be expected to increase/decrease or stay the same in the next twenty years? Anssssswer please only 8 minutes left !!!
Answer:
Increase
Explanation:
Amanda hates her new student ID photo. Her hair looks dry, the extra weight she's gained shows, and her neck looks fat. Amanda's also been feeling very tired and mentally dull. Amanda goes to the clinic where you are working. You draw her blood. The test results show her T4 levels are low and her TSH levels are low. Later she is given a TSH stimulation test in which TSH is injected and the T4 levels are monitored. After TSH injection her 14 levels rise. A) Does Amanda have problems with her pituitary or with her thyroid gland? B) How did you come to your conclusion?
Answer:
A) Pituitary Gland B)By analysing the given observations in the question.
Explanation:
THS, thyroid stimulating hormone, is an hormone produced by the pituitary gland and in return it stimulates the thyroid gland that produces hormones such as T3 and T4.
We can conclude from the given information that Amanda's thyroid gland does not have a problem with producing and secreting the T3 and T4 hormones when THS is present in her body.
But the low THS levels show that the problem is with her pituitary gland causing her to have low levels of THS.
We can reach this decision by analysing the given information.
I hope this answer helps.