Answer:
The cardiac cycle is defined as a sequence of alternating contraction and relaxation of the atria and ventricles in order to pump blood throughout the body. ... In other words, when the atria are in diastole, the ventricles are in systole and vice versa.The cardiac cycle describes all the activities of the heart through one complete heartbeat—that is, through one contraction and relaxation of both the atria and ventricles. ... The volume of the ventricles remains unchanged (isovolumetric) during this period.
Explanation:
Someone help with me this :/
Help me pleaseee :/ “ I need the answer ASAP
Answer: The answer is B
Explanation: Because it does not describe changes due to selective breeding.
Describe the appearance of the mycobacterium on a plate. with what cell component does this correlate?
Answer:
The appearance of the mycobacterium is like rod shaped.
Explanation:
The structure of mycobacterium is rod liked and it is purple in color. The meaning of the word mycobacterium is fungus bacteria because it resembles with the fungus in its structure and appearance. Cell wall is the cell component which correlate with mycobacterium. The structure of cell wall is thick and made up of several layers of peptidoglycan which is formed from sugar and amino acid molecules.
Pneumonia is a virus or a bacteria?
Answer: Both
Explanation:
How can you increase your knowledge on a topic or a given situation?
A) Guess and go with your gut.
B) Get opinions from your fellow associates.
C) There aren't any ways to increase your knowledge on a topic.
D) Discuss the topic with individuals considered "experts" on the topic.
Answer:
B because it's experts don't always know everything and it's good to communicate with people who might know it.
Get opinions from your fellow associates which help in increase your knowledge on a topic or a given situation. Thus option B is correct.
what is general knowledge ?
To get information, understanding, or skill that from experience or education or some one else is called as knowledge.
General knowledge is a broad field of gathering valuable information related to social interests, culture, civilization, community, or nation gathered from a various media platforms.
It is not under a specialized information on a specific topic; it is knowledge about every aspect of human life like current affairs, fashion, family, health, and the arts and sciences.
To gain general knowledge, it takes huge time and effort, intelligence, problem-solving, confidence, and open mindedness etc. It helps with personal growth, good citizenship, and a stronger society.
Thus option B is correct.
Learn more about knowledge, here:
https://brainly.com/question/13137764
#SPJ2
A scientist observed a phenotypic change in a mouse in her laboratory. This change was passed to the mouse’s offspring. What inference could the scientist make that would be supported by the observation?
a.
The phenotypic change is due to a mutation in a gamete.
b.
This mutation causes a disorder.
c.
This mutation has a positive impact on the mouse’s ability to survive.
d.
This mutation is the result of insertion of nucleotides.
Answer:
A
Explanation:
Mutations can occur in either cell type. If a gene is altered in a germ cell, the mutation is termed a germinal mutation. Because germ cells give rise to gametes, some gamete s will carry the mutation and it will be passed on to the next generation when the individual successfully mates.
It has often been said that the next dominant animals on land, after a hypothetical demise of all mammals, would be the insects. Why so?
Explanation:
The animals that dominate the Earth today are the human species or Homo sapiens. Many factors have allowed the species to dominate the Earth-like use of new tools, vocal cords, and an increased sense of intellect and natural intelligence. But today we can observe the social wars, epidemic, and harm to our planet which could result in the extinction of humans.
The scientist has hypothesized that after the Homo sapiens, new dominating species will be insects as this group of the organism has:
1. Survived many mass extinctions.
2. are highly adaptable to extreme conditions.
3. Has evolved many adaptive features to protect itself from prey like a tough exoskeleton, few to many legs, bombarding in few species when someone tries to eat it, and many others.
Which statements explain how ponds and lakes differ? Select two options.
Ponds are shallower than lakes.
Ponds are larger than lakes.
Pond water moves more than lake water.
Lakes have more plants at the bottom than ponds.
Lakes are colder and darker at the bottom than ponds.
Answer:
A. ponds are shallower than lakes
E. lakes are colder and darker at the bottom than ponds
Answer:
1. A - Ponds are shallower than lakes
2. E - Lakes are colder and darkey at the bottom than lakes
Explanation:
I did the test
A completely heterozygous A+ blood typed man has children with a woman who is completely heterozygous B+ blood type. How many different possible phenotypes could their children be?
Answer: Heterozygous A+ and B+ can form phenotypes such as AB+, A+, B+, O.
Explanation:
Using the punnet square, Heterozygous A+ combination with B+ can form phenotypes AB+, A+, B+, O. Below is an attachment that explains it better.
Reference: Google.
What is the name of a group of connected and related organisms?
O A. Energy
B. Matter
O C. Flow
O D. System
Answer:
D. System
Explanation:
Energy isn't an organism.
Matter is what everything physical is made of.
Flow doesn't apply here.
System is the name of group of connected and related organisms.
What is system in organization of life?A system pertains to interdependent or interrelated objects comprising and functioning as a whole. In biology, it may refer to the biological or body systems. A biological system is a group of organs that work together to carry out a particular task.
A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of miniscule but distinct structures called organelles.
A system is a group of organs that work together to perform a certain task. Common systems, such as those present in mammals and other animals, seen in human anatomy, are those such as the circulatory system.
Learn more about system:
https://brainly.com/question/30068381
#SPJ6
Algae and coral have a mutualistic relationship. However, algae leave coral when the water is too warm. What kind of factor is temperature on
this relationship?
abiotic
commensalistic
biotic
parasitic
Answer:
parasitic
Explanation:
I got a 100 so im not cappin :)
Algae leave coral when the water is too warm. Temperature is a kind of abiotic factor in this relationship.
What do you mean by Mutualistic relationship?A Mutualistic relationship may be defined as when two organisms of different species work together, each benefiting from the relationship.
The temperature always remains an abiotic factor which is one of the important factors in the environment. Other abiotic factors are light, rainfall, fire, and winds.
Therefore, algae leave coral when the water is too warm. Temperature is a kind of abiotic factor in this relationship.
To learn more about Abiotic factors, refer to the link:
https://brainly.com/question/1563549
Plant cells have large, round vacuoles they primarily use for -
A) water storage
B) energy production.
C) protein synthesis.
D) waster removal
Answer: the answer is water storage
Explanation: i just got it right
What are 3 instruments used throughout history to observe the motion of the planets and starts
Answer:
Telescope, star chart, and lasers(light).
Explanation:
How do new introduced species become established in a new ecosystem
Answer: If it can outcompete native species for resources such as nutrients, light, physical space, water, or food
Explanation:
Which of the following environmental factors belongs to biotic factors? 1. Wind 2. Salinity 3. Soil moisture 4. Microorganism
Answer:
4. Microorganism
Explanation:
Wind, Salinity, Soil moisture are abiotic factors, non living things.
Which is the most likely reason that stem cell research is controversial?
Stem cell research could lead to the development of human clones.
Many people assume that all human stem cells come from embryos.
Research by using stem cells results in high-priced treatments for disease.
Information that is obtained from stem cell research is considered unreliable.
Answer
Many people assume that all human stem cells come from embryos.
Explanation:
Not all stem cells are embryonic stem cells. In fact, a lot of stem cell type procedures come from stem cells in bone marrow. The controversy behind embryonic stem cells is that they come from aborted babies, which many don't agree with.
Answer:
B
Explanation:
what virus structure is similar in function to cell membrane
A. protein shell
B. internal protein
C. tail health
D. end plate
Answer:
a. protein shell
Explanation:
The protein shell is similar in structure to the cell membrane. so the correct option is A.
What is the structure of the virus?
Viruses are simple microscopic structures. They are infectious in nature with the ability to multiply only in living cells of animals, plants, or bacteria.
These are extremely small, even smaller than bacteria. They have a single- or double-stranded nucleic acid as genetic material. The genetic material can be in the form of DNA or RNA. It is surrounded by a protein shell called a capsid. Some viruses have an outer envelope that is composed of lipids and proteins outside of the capsid. They have various varieties of shapes.
RNA viruses and DNA viruses are the two main classes of viruses. A virus is inactive when it is outside of a living cell. It can only multiply within an appropriate host cell.
The virus can overtake the metabolic machinery of the cell to produce new virus particles called virions.
Therefore, the correct option is A.
Read more about virus structure, here
https://brainly.com/question/1427968
#SPJ6
I need some answers for this question
Answer: Mitochondria
Explanation:
This image represents the aerobic breakdown of glucose (respiration), this occurs in the mitochondria.
Hope this helps!
Omar often saw woodpeckers perched in trees in his backyard, but he never saw them at his bird feeders. Omar usually filled his feeders with sunflower seeds. He wondered if he could attract woodpeckers by adding a different type of food to the feeders.
To test this idea, Omar gathered eight identical bird feeders. He filled four with sunflower seeds. He filled the remaining four feeders with crushed peanuts. Omar then placed the bird feeders in his backyard. Over the next five days, he counted the number of woodpeckers that visited each bird feeder each morning.
Which of the following was an independent variable in this experiment?
Answer: The food
Explanation: the independent variable is the one to be changed and in this case, it is the food
So if the Moon's shadow is falling on the Earth during a solar eclipse, what phase of the moon must it be? (The moon is between the Earth and Sun.)
Answer:
New moon
Explanation:
A solar eclipse can only occur during New Moon (when the entire moon is covered in darkness and not visible from the earth's surface.) A total solar eclipse can be seen within the moon's dark inner shadow (called the umbra.) A partial solar eclipse can be observed within the earth's lighter outer shadow (called the penumbra).
An element is made of many different types of atoms all together.
True
False
Answer:
FALSE
Explanation:
A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing just one proton and one elect
PLZ Help
How can you connect these words to say how they are related:
Parasitism and Recessive Trait
Answer:
Here are the definitions so myabe you can write them together yourself!
Explanation:
Parasitism - noun
Biology. a relation between organisms in which one lives as a parasite on another.
a parasitic mode of life or existence.
Pathology. a diseased condition due to parasites.
(in some totalitarian countries)
unemployment or refusal to work.
employment in work considered nonessential by the state.
Recessive - adjective
tending to go, move, or slant back; receding.
Genetics. of or relating to a recessive.
Phonetics. (of an accent) showing a tendency to recede from the end toward the beginning of a word.
noun Genetics.
that one of a pair of alternative alleles whose effect is masked by the activity of the second when both are present in the same cell or organism.
the trait or character determined by such an allele.
What is the difference between the axial skeleton and the appendicular skeleton?
Which statement about a dichotomous key is true?
A dichotomous key is based on the temporary actions of an organism.
A dichotomous key may include a question that has three or more answers.
A dichotomous key may have a group with no organisms in it.
A dichotomous key is complete when each organism stands alone.
Answer:
A dichotomous key is complete when each organism stands alone is the correct answer.
Explanation:
Dichotomous key helps scientists and biologists to known the identity of the various unknown things present in a natural world such as mammals, trees, fish, rocks, reptiles.
This tool is used to recognize and classify an organism based on their characteristics and it helps to provide a correct name to an organism that differentiates the organism from the other objects.
The dichotomous key identifies the individual species, objects, or organism with its scientific name.
Answer:
D;)
Explanation:
Energy in this ecosystem passes directly from the sun to
A. Herbivores
B.consumers
C.heterotrophs
D. Autotrophs
Answer:
D. Autotrophs
Explanation:
Because the sun's energy is used in plants (Autotrophs) for photosynthesis.
Answer:
autotrophs
Explanation:
also called plants
A substance was added to a cell culture that inactivated the tRNA in the cell. Which is the best prediction of what will occur in this cell culture?
a.
Transcription will not occur.
b.
Ribosomes will not form.
c.
Amino acids will not form proteins.
d.
DNA will not be copied.
Scientists often work together with other scientists. If you were working in a laboratory working together in a way that is effective, and help make sure that people got fair credit for their work? What is needed for people to work together in an effective way?
Answer:
Often in scientific work it is necessary to complement skills between researchers.
Explanation:
In research, it is imperative to work in collaboration with interdisciplinary groups of scientists. For example, geneticists work together with bioinformaticians to analyze how mutations may affect gene expression patterns in different tissues, cells, etc.
Based on changes in human populations from ancient times to the present, what do you think might have happened to movement of human genes? Check all that apply. there is a larger pool of human genes there is more genetic variation in a given human population than in the past genes move more easily from one population to another humans continue to change, as genes continue to move
Answer:
All of them are right
Explanation:
Following option applies here:
there is a larger pool of human genesgenes move more easily from one population to anotherhumans continue to change, as genes continue to moveWhat is gene pool?A gene pool is the total collection of all the genes, including variations (alleles), in a particular species or population. It refers to the genetic diversity within a population and includes all the different versions of a gene that can be found in the individuals of that population.
The gene pool can change over time due to genetic drift, mutation, and migration, which can lead to the evolution of a population. The larger the gene pool, the more variation and diversity there is within a population, and the greater the potential for adaptation to changing environments.
Learn more about gene pool, here:
https://brainly.com/question/1027582
#SPJ2
which of the following alternative engery technologies is most likey to be used to power a car?
wind
geothermal
biofuel
hydropower
Answer:
C
Explanation:
The natural greenhouse effect is important to life on Earth because
A. Earth would be too hot without the natural greenhouse effect
B. Earth would be too cold without the natural greenhouse effect
C. there would be no atmosphere without the natural greenhouse effect
D. all of the above
Answer:
B
Earth would be too cold without the greenhouse effect
Explanation: