Answer:
During latent period, the muscle is preparing itself for contraction which comprises of biochemical activities from the stage acetylcholine bind to sarcolemma through cross-bridge formation.
Explanation:
A single muscle twitch has three stages which are latent period, contraction phase and relaxation stage
During latent period, the muscle is preparing itself for contraction which comprises of biochemical activities from the stage acetylcholine bind to sarcolemma through cross-bridge formation because the latent period is a short delay from the time the action potential get to the muscles until tension can be seen clearly in the muscle and the action potential is being propagated along the sarcolemma.
Which of the following cell structures can be found in prokaryotic cells?
A. chloroplasts
B. ribosomes
C. mitochondrla
D. Nuclei
Answer:
The correct answer is B. ribosomes.
Explanation:
Prokaryotic cells, like bacteria, are cells that do not have any organelles. Unlike eukaryotic cells, they do not have a nucleus or other membrane-bound structures inside their cell membrane. Therefore, prokaryotic cells do not have chloroplasts, mitochondria, or nuclei, but they do have ribosomes (as do eukaryotic cells) which are an important component of protein production in the cell.
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Chlorpromazine (Thorazine) may cause which of the following side effects? a. Respiratory depression b. Hemorrhage c. Tachycardia d. Gastric ulcers
Answer:
The correct answer is option d. "Gastric ulcers".
Explanation:
Chlorpromazine (Thorazine) is an antipsychotic medication, the widest medicine used to treat schizophrenia, and other psychotic disorders such as bipolar disorder. One of the most common side effects of the use of Chlorpromazine is the formation of gastric ulcers. This happens because Chlorpromazine inhibits histamine and insulin, two compounds that stimulate gastric secretion.
When both participants in a species' interaction develop adaptations in direct response to one another, this could progress into all of the outcomes except:
resource partitioning
coevolution
extinction of one species
competitive exclusion
intraspecific competition
The given case could progress into all the outcomes except intraspecific competition
Intraspecific InteractionIntraspecific interaction is a kind of interaction seen within the same species that compete for basic necessities for survival such as food, habitat, and water. It does not lead to evolutionary changes within the species, therefore they do not develop adaptations in response to the competition
Thus, it can be concluded that the adaptation in direct response to one another could lead to all except intraspecific interaction
Learn more about intraspecific interaction :
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Statement best explains why water is essential for all living things
Answer:
Its a necessity for all living things
Explanation:
Is ozone splitting a chemical reaction or a physical reaction?
7. The _____ population was not affected by an increase in the krill population. seal clam squid penguin
Answer:
The clam population was not affected by an increase in the krill population.
Answer:
The answer is "Clam".
Explanation:
What is measured during a
controlled experiment?
Answer:
In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled. The researcher can operationalize (i.e. define) the variables being studied so they can be objectivity measured. :)
1) The process of
using any of the five
senses to gain
information about an
environment or about
a problem
OA.) observation
OB.) conclusion
OC.) constant
Answer:
your answer is OA.) Observation
Explanation:
observation sense helps you gain information
Why isn't movement considered a characteristic of all life?
Answer:
not all living things move
Explanation:
Animals which are living things have the ability to move as well as microrganisms however, plants and certain microrganisms do not have these abilities and yet are still living.
Answer:
Technically, all living things move in some way.
Different animals, like humans, dogs, and goats, can walk and run. Marine animals can swim and dive. Birds and some insects can fly around.
Plants can move, just not the same way animals can. For example, a sunflower will turn to face towards the sun. Although, plants don't have the ability to move from one place to another, or locomotion.
So, movement can be considered a characteristic of life, but locomotion is not. Plants and other living organisms cannot get up and move from one spot to another spot.
what is one disadvantage of insect stridulation
Answer:
Many insects stridulate when they are handled or attacked. It has been suggested that this disturbance stridulation acts to deter predators. This hypothesis was investigated in a series of experiments. Predators were given insects which had been silenced by disruption of their sound-producing mechanism or else had been sham operated but retained their normal ability to stridulate. 2. Three types of insects (mutillid wasps, Dasymutilla spp.; water scavenger beetles, Tropisternus spp.; and round sand beetles, Omophron labiatus) were given to wolf spiders (Lycosa ceratiola and Geolycosa ornatipes) at night in the field under natural conditions. When attacking silenced insects, spiders displayed greater persistence than when attacking phonic insects (Table 1). In addition, mortality was greater among silenced insects. 3. Spiders (L. ceratiola) were also given an artificial 'insect' - a vibrating probe whose vibration mimicked that of the cuticle of a stridulating insect. As with real insects, spiders persisted longer in their attack on the probe when it was silent than when it was 'stridulating.' 4. Female mutillid wasps were given to wild-caught mice (Peromyscus floridanus) in the laboratory. Unsilenced mutillids survived the encounter more often than their silenced counterparts. In another experiment, the stings of mutillid wasps were removed before testing. Mice killed nearly all these 'unprotected' mutillids. However, it took mice significantly longer to attack unsilenced mutillids and longer to kill them after initiating the assault (Table 2). 5. These results support the view that insect disturbance stridulation deters predators. Two modes of action by which these sounds may have their effect are discussed: they may serve to startle the attacker or they may alert it to the potential harmfulness of the insect and as such may qualify as an example of acoustic aposematism.
Decide the outcome of the hypothetical situation by dragging the label into the appropriate category Increase Would tissue damage increase or decrease if the epidermis of the skin was composed of nonkeratinized tissue? Would elasticity of the ears increase or decrease f the elastic cartilage was replaced with bone?
Would texibiliny of the intervertebral dises increase or decrease if the ibrocartlage was replaced with elastic cartilage?
Would diffusion rates of oxygen increase or decrease if the alveolar Ining of the lungs was made of stratified epithelum?
Would involuntary control of digestive motity increase or decrease if the intestines contained skeletal muscle? Decrease
Would the rate of infection increase or decrease i the epidermis was composed of pseudostratifed epithelium?
Would the vascularity of ligaments increase or decrease if they were made of bone?
Would protection of the brain increase or decrease the soงเ was made of hyaline cartilage?
Answer:
Would tissue damage increase or decrease if the epidermis of the skin is composed of non-keratinized tissue? Yes, since keratin is considered to be responsible for confining a little more stiffness to the tissue and structure, would the elasticity of the ears increase or decrease if the elastic cartilage were replaced by bone? It would decrease, elastic cartilage has more elasticity than bone tissue.
Would the texibily and intervertebral diseases increase or decrease if the ibrocartlage were replaced by elastic cartilage? It would decrease.
Would oxygen diffusion rates increase or decrease if the alveolar interior of the lungs were made up of stratified epithelium? They would decrease, since the epithelia have different shapes according to their function, the cylindrical epithelia are those specialized in absorption and exchange of molecular or chemical substances, the stratified ones with abundant stratum corneum function as barriers, either for protection or compartmental such as the epidermis. , therefore, the passage of oxygen will be less when facing the corneal barrier.
Would involuntary control of digestive motility increase or decrease if the intestines contained skeletal muscle? They would decrease, since it would become a voluntary function, and not an involuntary automatic physiological one.
Would the infection rate increase or decrease if the epidermis was composed of pseudostratified epithelium? It would increase, because the epidermis must have the corneal barrier in order to protect our organism and thus hinder the passage of pathogens into the organism, the function of the epidermis is to comply with the highly keratinized barrier of the stratum corneum.
Would the vascularity of the ligaments increase or decrease if they were made of bone? It would decrease or increase depending on the type of bone, since the cancellous is highly vascularized and the laminar one is not. But if we consider that elasticity gives more movement and movement improves circulation and vascularization, so in general terms, this would decrease.
Would brain protection increase or decrease the way ง เ was made of hyaline cartilage? It would decrease, since hyaline cartilage is less resistant and less rigid than bone tissue, thus generating possible compressions of the central nervous system.
Explanation:
All questions were answered above, and justified according to medical knowledge.
The shuttle system for the transfer of aceytl coa generated in the mitochondrial matrix includes:_____.
a. citrate from the citric acid cycle.
b. citrate lyase in the cytosol.
c. ATP hydrolysis.
d. the production of NADPH by malic enzyme.
e. all of the above.
Answer:
e. all of the above.
Explanation:
Acetyl-CoA is a biochemical agent, in which its main function is to transport acetyl group to the citric acid cycle. It works in metabolic reactions of protein, carbohydrate, and lipid
Acetyl-CoA is transported through the mitochondrial membrane, and enters the cytoplasm of the cell, as the molecule citrate.
The shuttle system for transfer of acetyl-CoA generated in the mitochondrial matrix to the cytosol includes:
1. citrate from the citric acid cycle.
2. citrate lyase in the cytosol.
3. ATP hydrolysis.
4. the production of NADPH by malic enzyme.
Hence, the right answer is option E: All of the above.
what kind of psycology is inpart of the study of the impact of natural selection and genetics upon behavior
Answer:
Evolutionary psychology
Explanation:
Evolutionary psychology is the hypothetical perspective of psychology that attempts to describe certain functional mental and psychological traits such as language, perception, memory, and how adaption/ evolution has influenced the behavior of an organism.
I hope this helps you:)
How would you determine the volume of a dead cat
Answer:
most cats are about approximately 648 cubic inches in volume
uh
come again?...........
The
Ocean is the most geologically active.
A. Indian
B. Pacific
C. Atlantic
D. Southern
Answer:
B; Pacific
Explanation:
More specifically, it's the Pacific Basin because it's located in The Ring of Fire.
(i will give brainly)
Since the vast majority of scientific statements have been proven wrong, is there any good reasons to believe in science?
Answer:
No, not really science has been proven wrong many times.
Explanation:
Which of the following means "has
never been living"?
A. natural
B. inorganic
C. organic
D. native
Answer:
B= inorganic
Explanation:
inorganic means not organic
Inorganic means that has never been living, the correct option is B.
What is inorganic?Organic and inorganic compounds are the building blocks of chemistry. The main distinction among both organic and inorganic compounds is that organic compounds every time contain carbon, whereas most inorganic compounds do not.
Furthermore, almost all organic compounds encompass carbon-hydrogen or C-H bonds.
In other statements, inorganic refers to not being made up of or derived from living matter.
A living organism is made up of cells. The cells differentiate, and the organisms' bodies grow as the number of cells increases. A tree is a living organism that exhibits the growth process.
Thus, the correct option is B, as inorganic implies to the one that is not living.
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Akira records the speed of a reaction, first without a catalyst, and then with a catalyst.
The provided question is incomplete, however the complete question is as follows:
Match the scenarios and scientific practice:
a. Akira records the speed of a reaction, first without a catalyst, and then with a catalyst.
b. Akira creates a reaction without a catalyst, then repeats the reaction with a catalyst.
c. Akira turns in a written lab report to his science teacher.
d. Akira wonders, "Will adding a catalyst speed up this chemical reaction?"
e. Akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowered the activation energy needed to start the reaction.
1. asking a question
2. performing an investigation
3. collecting data
4. providing explanations
5. communicating results
Answer:
The correct match is :
collecting data - a
performing an investigation -b
communicating results - c
asking a question - d
providing explanation - e
Explanation:
Any research have a scientific method to investigate about the research which have to follow a certain steps in order to test the research and these steps include following steps:
1. asking a question: for any research there would be query or question about any natural phenomenon or process how or why its works in a certain way.
2. performing a experiment : an experiment is a scientific method to test a hypothesis that helps in collecting data to support or against the research.
3. In the end or during of experiment there would be data that need to be collected to get to the result of experiment.
4. providing or forming conclusion on the basis of result and data collected.
5. communicating result would be help in understand the result and review.
Calculate the density of sulfuric acid if 45 mL of the acid weighs 100g.
Answer:
[tex] \boxed{\sf Density = 2.23 \ g/mL} [/tex]
Given:
Mass = 100 g
Volume = 45 mL
To Find:
Density
Explanation:
Formula:
[tex] \boxed{ \bold{Density = \frac{Mass}{Volume}}}[/tex]
Substituting value of mass & volume in the formula:
[tex] \sf \implies Density = \frac{100}{45} \\ \\ \sf \implies Density = 2.23 \: g/mL [/tex]
3. The following are examples of connective tissue, except:
a. Bones
b. Tendons
c. Skeletal muscle
d. Cartilage
Answer:
C.) skeletal muscle
Explanation:
what is sex?(explain it )
life cycles of sexually producing organisms involve the alternation of haploid and diploid stages true/false
Answer:
True
Explanation:
The life cycles of sexually producing organisms generally involve alternation between the haploid and diploid generations.
Sexual reproduction involves the fusion of gametes - fertilization. The gametes are haploid (n) and are usually formed by the reductional division (meiosis) of diploid (2n) sex cells.
Haploid gametes represent the haploid stage of the life cycles of sexually reproducing organisms. During fertilization, the male and female gametes fuse together to form a diploid zygote. The zygote then continues to divide equationally (mitosis) and differentiates to give rise to a baby and eventually to either male or female adult organism.
How many objective lenses are there, How many total lenses are there in a microscope, and How many adjustment knobs are used to magnify an object? (compound microscope)
Answer:
3 or 4 objective lenses
2 total lenses
2 adjustment knobs (coarse and fine)
Explanation:
I hope this helps you
Mr. Toowise was having a difficult time getting his students to get good grades on quizzes. He was trying to think of a way that he could positively reward his students. He read an article that said that lab rats that were rewarded with sunflower seeds ran through a maze faster than rats that were not rewarded with sunflower seeds. Mr. Toowise stated, "I think that the more sunflower seeds I promise my students, the better they will do on a quiz." He divided the class into three groups. Group one was promised zero sunflower seeds if they did well on the next quiz. Group two was promised 25 sunflower seeds if they did well on the next quiz. Group three was promised 50 sunflower seeds if they did well on the next qutz. Group one received an average of 70% on the quiz. Group two received an average of 73% on the quiz. Group three received an average of 71% on the quiz. He looked at his results and concluded that the amount of sunflowers promised to students does not effect their quiz scores.
Using the information provided in the scenario above, fill in the data table below
1. Hypothesis: ___________
2. Dependent Variable: __________
3. Independent Variable: ___________
4. Constant Control Group _____________
5. Experimental Group:_____________
Answer and Explanation:
1. Hypothesis: The more sunflower seeds the students get, the better they will do on a quiz.
2. Dependent Variable: Responding variable refers to the dependant variable, which response depends on any change in the independent variable. A change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. In the exposed example, the dependent variable is the response of each group to sunflowers seeds expressed as their grades on quizzes.
3. Independent Variable: number of sunflower seeds. Manipulated variable refers to all the variables in an experiment that provoke a response in another variable. They are also known as independent variables. The researcher can change these variables to see what changes it implies in an object, process, trait, or anything that depends on them. In the exposed example, the researcher manipulates the number of sunflower seeds promised to each group.
4. Constant Control Group: Group 1, which does not receive any sunflower seeds. The election of a control group is essential in an experiment. Its principal purpose is to allow the discrimination of the results obtained by the treatment in the study, in this case, the provision of sunflower seeds, from the results that might be a consequence of other factors. The control group must be selected from the same population of the treatment group. All groups must be similar in every variable that might influence the results, except for the study treatment
5. Experimental Group: Groups 2 and 3, that received different amounts of seeds.
The heart is a muscle. The more you exercise it, the stronger it becomes. With this in mind, contrast the resting heart rate of an athlete with that of an inactive person.
Charles Darwin and Alfred Wallace first suggested: A. The idea that evolution might occur. B. A theory to explain how evolution occurs within populations. C. Changes to an individual organism’s body, caused by changes in the environment, might be passed on to the organism's offspring. D. None of the above.
Answer:
You watched the lab demo video and looked over the lab sheet. You saw how the catalyst (MnO2) affected the rate of reaction as hydrogen peroxide (H2O2) broke down in to water (H2O) and oxygen gas (O2).
How did the catalyst affect the rate of reaction?
What was the evidence that the catalyst was having that affect?
Explanation:
Glycoconjugates result from the covalent linkage of carbohydrate to proteins or:________.A. Amino acids B. Lipids C. Nucleotides D. Both A and B are correct E. None of the above are correct
Answer:
B. Lipids
Explanation:
Glycoconjugates occurs as a result of a process known as glycosylation.
Glycoconjugates result from the covalent linkage of carbohydrate to proteins or lipids.
It is also used to refer to carbohydrates who are covalently bonded to other chemical compounds such as protein, lipids, peptides etc.
Which of the following is the most likely to occur if the temperature of seawater decreases?
A. The speed of sound will decrease due to the decreasing salinity of seawater.
B. The speed of sound will increase due to the increasing density of seawater.
C. The speed of sound will decrease due to the increasing density of seawater.
D. The speed of sound will increase due to the decreasing density of seawater.
Answer:
B- The speed of sound will increase due to the increasing density of seawater.
Explanation:
If the temperature of seawater decreases its density increases, but only to a point
Answer:
C. The speed of sound will decrease due to the increasing density of seawater. Most likely to occur if the temperature of seawater decreases.
Explanation:
Most likely to occur if the temperature of seawater decreases.
When an egg is fertilized and becomes a zygote, the first thing it does is:______ A. Differentiate into specialized cells. B. Begin dividing and growing larger. C. Organize its cell by their specialization. D. Split in two repeatedly to make a bundle of small cells
Answer:
B. Begin dividing and growing larger.
Explanation:
When the sperm and egg cells fuse during fertilization they form a zygote. The zygote then starts to begin to divide rapidly and start growing larger and bigger.
After this process the cells then begin to become differentiated and the parts of the body now become more visible and pronounced.
Which of the following statements correctly describes the relationship between intracellular fluid (ICF) and extracellular fluid (ECF)?
A. The types of solutes and their distribution between the ICF and ECF are not the same.
B. Total solute concentration differs in the ECF when compared to the ICF.
C. All of the contents within the ICF are readily exchanged with the contents of the ECF.
D. The ICF and the ECF are in a chemical equilibrium.
Answer: Option A.
The types of solutes and their distribution between the ICF and ECF are not the same
Explanation:
Intracellular fluids are fluids found inside the cell's cytoplasm while extracellular fluid are fluids the flow outside the cells which consist of plasma, interstitial and trancellular fluid
The types of solutes and their distribution between the ICF and ECF are not the same because intracellular fluid of the cystosol is composed of water, dissolved ions, small molecules, and large, water-soluble molecules while extracellular fluid consist of plasma, interstitial fluid and cytosol have high potassium concentration and low sodium Concentration.