Answer:
c. Cardiac muscle contains bands like skeletal muscle, but its contractions are involuntary like smooth muscle.
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Cardiac muscle is also referred to as myocardium and it's one of the three (3) muscles found only in the heart of vertebrates, the other two (2) being smooth muscle tissue and skeletal muscle tissue.
Cardiac muscle contains bands like skeletal muscle referred to as sarcomeres (contractile units), but its contractions are involuntary like smooth muscle and it's typically being regulated by the sinoatrial node of the heart.
what is the average lifespan of a sperm cell
[tex]Hello[/tex] [tex]There![/tex]
The answer is...
5 days at least.
Good luck!
[tex]AnimeVines[/tex]
Explanation:
the answer is up to 5 days
Which of the following workers is a maintenance staff member?
I have to write a hypothesis based on if plants need sunlight
I would put one plant inside and one outside with everything they get the same except the amount of sunlight
Answer:
Sunlight is related to plant growth. If the amount of sunlight is increased, then plant growth will increase. The hypothesis that plant growth increases as the amount of sunlight increases was supported by the data.
If you have a measurement of 234.005 k, how many significant figures does it have
Answer:
It has 6 sig figs
Explanation:
235.005
Every digit is significant.
What type of unconformity did Hutton see at Siccar Point and how was this uniformity formed?
Answer:
Hutton's Unconformity
At Siccar Point, during the lower Silurian Llandovery epoch around 435 million years ago, thin beds of fine-grained mudstone were laid down gradually deep in the Iapetus Ocean, alternating with thicker layers of hard greywacke formed when torrents swept unsorted sandstone down the continental slope. Siccar Point is a rocky promontory in the county of Berwickshire on the east coast of Scotland. It is famous in the history of geology for Hutton's Unconformity found in 1788, which James Hutton regarded as conclusive proof of his uniformitarian theory of geological development.
Look at the branching tree diagram below.
A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right with the following traits Four limbs, Amniotic egg, Fur, Shearing teeth, and Retractable claws. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Amphibians, Reptiles, Marsupials, Dogs, Cats.
Which group of organisms evolved after dogs?
Only cats
Only marsupials
Both cats and marsupials
Both amphibians and reptiles
Answer:
both cats and marsupials
Answer: Both Amphibians and Reptiles
Explanation: I took the test and got it, so.....
What is love ???
Please don't spam
Answer:
Read john 3:16 from the bible. That is the love God shows on us even when we don't believe his existence or deny him as the truth, ..world is important but it is not permanent.
what is the purpose of ethical guidelines for the handling of experimental subjects
Answer:
The purpose of ethical guidelines for handling of experimental subjects is to ensure the safety and well-being of all living creatures in an experiment. Ethical guidelines include issues such as human rights, animal welfare, safety compliance with the law, conflicts of interest, health standards.
Why do plant cells have chloroplasts?
Answer:
The chloroplast has chlorophyll and the chloroplasts also helps with makes photosynthesis happen. It takes the suns energy and turns it into energy for the plant. So it uses solar energy and makes chemical energy.
Explanation:
You have been asked to help a top nutrition researcher conduct human experiments on vitamin C. As the subjects walk into the laboratory, you distribute all the vitamin C pill bottles to the girls and all the placebo pill bottles to the boys. The researcher instantly informs you that there are two errors in your research practice. What steps should you have done differently?
a. given all the boys the vitamin C and the girls the placebo, and told them what they were getting
b. Distributed the bottles randomly, randomized the subjects, and told them what they were getting.
c. Told the subjects which group they were in, and prevented yourself from knowing the contents of the pill bottles.
d. Prevented yourself from knowing what was in the pill bottles, and distributed the bottles randomly to the subjects.
Answer:
Option D
Explanation:
Prevented yourself from knowing what was in the pill bottles, and distributed the bottles randomly to the subjects.
Which is the best interpretation of the two flat portions of the graph?
A. These show where the temperature is 0ºC.
B. These show where changes of state are occurring.
C. These show where kinetic energy is increasing.
D. These show where thermal energy does not exist.
Answer:
B, they are changes of state.
The best interpretation of the two flat portions of the graph where these shows that change of state are occurring. Thus, C is correct option.
What are change of state?A state is physical condition of any substances it means that any substance which found on earth are mainly found in three states and these are following:-
1- Solid
2- Liquid
3- Gas
A change of state is physical change of state i.e any substance which changes their state from ( solid to liquid called melting), (liquid to gas called evaporation), (gas to solid called diffusion) etc are called change of state.
These change of state occurs when temperatures or pressure changes in a system or substances. When the temperature or pressure increase the interaction between the molecules also increases.
Therefore,the best interpretation of the two flat portions of the graph where these shows that change of state are occurring. Thus, C is correct option.
Learn more about change of state here:
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which of the following solutions has the hghers h ion concentration
A scientist lives near a wind farm and is wondering about the environmental effects of the wind turbines. They ________ that the turbines make a sound like faint airplane engines and also that there are far fewer meadowlarks living near the windfarm than lived there were before the windfarm was built.
Answer:
Due to sound, population is decrease.
Explanation:
Due to noise of the wind turbine, there is decrease in population of meadowlarks in that region which is the only adverse effect of wind turbine. This wind turbine produces clean energy and produces no pollution like energy produce from burning of coal. This migration of meadowlarks can imbalance the ecosystem that has a great effect on the surrounding area.
Which type of plate boundary would be most likely to lead to above-ground volcanic activity?
A . Subduction
B .divergent
C.collisional
D . Transform
Answer:
A.Subduction
Explanation:
In a subduction zone, one plate slides beneath another. This leads to friction that can melt the crust and result in volcanic activity
What is classification? Why is it necessary to classify animals and plants?
Answer:
Explanation:
Scientists use Taxonomy, the science of classifying living things, in order to make sense of biodiversity and how living things are related. For example, the classification of species is important in light of a changing environment because it helps scientists keep track of endangered species and what new species were formed because of the environmental change.
What is a genotype???????
Answer: A genotype is an individual's collection of genes.
Explanation:
Explain how various animal species have rapidly evolved as a result of human impact.
Answer:
Numerous examples of this human-induced contemporary evolution have been reported in a number of 'contexts', including hunting, harvesting, fishing, agriculture, medicine, climate change, pollution, eutrophication, urbanization, habitat fragmentation, biological invasions and emerging/disappearing diseases.
Explanation:
Traits can also be
, which means they can be masked
Answer:
is that a question?
Explanation:
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.
A millimeter, a meter, and a kilometer are all measures of distance. What is
another way to classify them?
O A. U.S. customary units
B. Measures of mass
C. Measures of volume
D. Metric units
Answer:
I think the correct answer is D
state te type of cell devision of cross section tips of onion root.
Why do doctors have to check what blood type a person has before receiving a
transfusion?
0
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
B. Different blood types have different antigens that will be attacked by someone with
antibodies against that blood type.
C. Your blood type doesn't matter as long as you get the correct amount of blood in a
transfusion.
O
D. They need to have the same blood type because their DNA must be similar enough to
blend or will cause side-effects and possibly be rejected.
Answer:
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
Science, Geology, Class 8
1. choose the correct answer ( CTCA )
a. what makes the soil fertile?
i. rock particles
ii. humus
iii. sand particles
iv. silt particles
Answer:
Humus
Explanation:
Also known as the uppermost layer of soil, that's for making soil more fertile due to its organic content.
Carbohydrates info
A. AKA:
B. Composed of:
C. Monomer:
D. Polymer:
E. Functions:
All enzymes which catalyze the chemical reactions of a cell are
a. carbohydrates b. lipids c. long-chain fatty acids d. proteins e. ribonucleic acids no another by differences in
Answer:
I think the answer will be protein.
Answer:
the answer is carbohydrates
A field of sunflowers facing the sun is an example of
Answer:
Phototropism
Explanation:
Phototropism. Although both types of movement orient plants toward a light source, heliotropism is not the same as phototropism. Phototropism is the term that describes the growth of a plant toward any light source.
Answer:
Phototropism. Although both types of movement orient plants toward a light source, heliotropism is not the same as phototropism. Phototropism is the term that describes the growth of a plant toward any light source.
Explanation:
Image result for A field of sunflowers facing the sun is an example of
Continuously facing towards the east also helps the flowers to heat up quickly. This gives them an advantage in pollination, as warm flowers attract insects. Therefore, in the plant's interest, the flower always faces the sun and is therefore always clearly visible to these important pollinators.
What are three blood cells in a human body
Answer:
red
white
platelets
Explanation:
these are the three blood cells in the human body
Which of the following is the only one that could cause a theory to change over time?
Group of answer choices
The discovery of new evidence
Exciting new—but untested--hypotheses
A series of new laws passed by the government
A change in public opinion
Answer:
may be
the discovery of new evidence
Explanation:
Accepted theories may be modified or overturned as new evidence and perspective emerges. Scientists are likely to accept a new or modified theory if it explains everything the old theory did and more. The process of theory change may take time and involve controversy, but eventually the scientific explanation that is more accurate will be accepted.
Some birds on the Galapagos Islands build nests in trees, while others hide eggs in rock crevices. What could account for this difference in nesting behaviors?
Answer:
Food habits, predators.
Explanation:
The biggest reasons are food habits and predators, most birds who nest on the ground either can't fly or use this to be closer to their food. A ground bird (Like quail) can fly but choose to be more ground-based birds.
Most of the time it's because these birds forage for food like ground insects, seeds from the brush that grows on the ground, or fallen fruit.
Most birds that live in the trees feast on seeds, leaves, or insects found close to where they choose to nest. They may also want to escape any predators that may be towards the ground.
The human heart weighs how many pounds
After careful consideration your answer is...
Just about 1 pound
*Hope I helped*
~Alanna~
1 lb (pound)
Explanation:
it is the answer.
