Answer:
El músculo estriado cardiaco es una forma especializada de músculo estriado, conforma la pared del corazón, cuya contracción rítmica es involuntaria.
Blood pressure of 132/78. What does the 78 indicate?
A) Pressure when the left ventricle contracts
B) Overall blood pressure reading
C) The difference between Volume and Pulse
D) The pressure when the left ventricle relaxes
Answer:
D.
Explanation:
Systolic pressure is the pressure in the arteries when the ventricles are contracting (the 132). Diastolic pressure is the pressure in blood vessels when the ventricles are relaxed (the 78).
That is a high blood pressure, almost Hypertension level
An independent variable is that which is:
A. Observed to develop a hypothesis.
B. Changed by the scientist.
C. Measured by the scientist.
D. Kept constant.
Answer:
B. Changed by the scientist.
Earth’s surface is covered by more than 70% water, but scientists think that when Earth first formed it did not have any water. Which of the following could be a possible explanation for how the Earth obtained its liquid water? A. Impacts from meteorites and comets delivered water to Earth. B. Ice locked up in early Earth’s core slowly melted and was released. C. Atoms of oxygen and hydrogen combined during early Earth’s formation to produce water molecules. D. Water vapor from the atmosphere condensed and rained down on the planet creating the oceans over millions of years.
Answer:
C. Atoms of oxygen and hydrogen combined during early Earth’s formation to produce water molecules.
During the light reactions part of photosynthesis, chlorophyll in the chloroplast captures energy from the sun. What is this light energy used for?
to release carbon dioxide and use glucose as energy
to turn carbon dioxide and chloroplasts to glucose
to combine oxygen and water to make glucose
to cleave water, release oxygen gas, and convert ADP to ATP
Answer: when the chlorophyll in the chloroplast captures energy from the sun the energy is used to Combine oxygen and water to make glucose
Explanation: basically it is stored as glucose
HOPE THIS HELPSS!!!!
Which of the following is NOT a nucleic acid?
A.DNA
B.RNA
C.mRNA
D.Reverse transcriptase
When should a line graph be used?
A. When there is no independent variable
B.when the independent variable is composed of categories and does not show a relationship.
C. When the independent variable is continuous and shows a casual link to the dependent variable.
D. When the independent variable is continuous and does not show a relationship to the dependent variable?
Answer: Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.
Explanation:
Question 2 of 10
of the places listed, where would you expect to find the lowest air pressure?
Answer:
The lowest measurable sea-level pressure is found at the centers of tropical cyclones and tornadoes, with a record low of 870 mbar (87 kPa; 26 inHg).
Answer:
if these are your choices:
desert
beach
sea level
mountaintop
its mountaintop
Explanation:
Describe what happens by the end of anaphase.
a. The chromosomes in the cell become less tightly coiled.
b. The nuclear envelope disappears in the cell.
c. The mitotic spindle of the cell begins to form outside the nucleus.
d. The cell begins to elongate and the two poles have an equivalent collection of chromsomes.
e. The vesicles derived from the Golgi apparatus produce a cell plate at the middle of the cell that eventually forms the new cell wall.
Answer:
d. The cell begins to elongate and the two poles have an equivalent collection of chromosomes.
Explanation:
The cell cycle is a fundamental cellular process by which a parent cell divides into two or more daughter cells. In somatic cells, this cycle can be divided into two major phases: interphase, where the cell prepares for its division, and mitosis or 'M phase'. The M phase can in turn be divided into four stages: 1-prophase (also divided into early prophase and prometaphase), 2-metaphase, 3-anaphase, and 4-telophase. During prophase, chromatin condenses, thereby forming visible chromosomes. Subsequently, during metaphase, the sister chromatids (i.e., the two identical halves of a single replicated chromosome) align along the middle of the cell at the metaphase plate by attaching their centromeres to the spindle fibers. Next, during anaphase, sister chromatids are separated and move to opposite poles of the cell, pulled by the mitotic spindle fibers. At the end of anaphase, the microtubules of the mitotic spindle pull the two sister chromatids toward opposite poles, thereby the cell gets begins to lengthen. Finally, during the telophase, daughter chromosomes arrive at opposite poles and uncoil, while daughter nuclei begin to form at the two poles and nuclear envelopes are formed.
Which of the following statements is false? Question 1 options: Bcl2 blocks aggregation of BH123 on the outer mitochondrial membrane thus inhibiting apoptosis. BH123 proteins, like Bax and Bak, are death-promoting members of the Bcl2 family that induce the release of cytochrome c from mitochondria into the cytosol. Bcl2 proteins are part of the extrinsic apoptosis pathway. Some Bcl2 family members promote apoptosis, whereas others inhibit apoptosis.
Answer:
The correct answer is - Bcl2 proteins are part of the extrinsic apoptosis pathway.
Explanation:
The Bcl-2 family group of proteins that are known to either promote or inhibit the process of apoptosis by regulating the mitochondrial membrane potential. Bax and Bak are Bcl-2 proteins, act as pro-apoptotic proteins which oligomerize to result in forming pores in the membrane of the mitochondria.
These pores lead to the release of cytochrome c to the cytoplasm. Bcl-2 protein is an anti-apoptotic protein that inhibits the oligomerization of Bak and Bax.
what is the length of the shortest side of the triangle
do you think each form of water is emportant? why?
Answer:
yes, because Water is very important to the human body. Every one of your cells, organs and tissues use water to help with temperature regulation, keeping hydrated and maintaining bodily functions.
Answer:
yes
Explanation:
because Water is very important to the human body. Every one of your cells, organs and tissues use water to help with temperature regulation, keeping hydrated and maintaining bodily functions.
Answer please!!!!!! Which of the following would decrease transpiration
turgid guard cells
Large surface area leaf
A thick wax cuticle
More stomata
Explanation:
more stomata is appropriate
In light reactions of photosynthesis why photosystem 2 occurs before photosystem 1
Answer:
because it is his choice
I hope you understand
When observing a plant cell under a microscope, what parts do you think would be big enough to see?
Answer:
Explanation:
There are a few key structural differences between plant cells and animal cells.
Below are a few of the main ones:
Plant cells are generally larger than animal cells.
Only animal cells have lysosomes (however, recent, and controversial, research suggests that some plant cells may have lysosomes), and only plant cells have chloroplasts.
While plants cells have a rigid cell wall, animal cells have a thin and flexible plasma membrane.
Plants cells have a large central vacuole and animal cells have many small vacuoles
When observing a plant cell under a microscope, one can see large interlocking rectangular blocks. Around each cell, the cell wall is clearly visible. When stained, the cell wall is somewhat thick and visible. The cytoplasm is also lightly stained, with a darkly stained nucleus at the cell's periphery.
What is a plant cell?A plant cell is a eukaryotic cell with something like a true nucleus and organelles that perform specific functions. However, some organelles found in plant cells differ from those found in other eukaryotic cells.
At the time of observing a plant cell under a microscope, person can see large rectangular blocks as well as cell wall is clearly visible.
When stained, the cell wall is thick and visible. The cytoplasm will also be lightly stained, with stained nucleus at the cell's periphery.
Thus, these structures can be visible under a microscope.
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Which term is defined as a coral reef that originally formed around the edges of a volcanic island?
a mid-ocean ridge
a continental margin
an atoll
a submarine canyon
Answer:
an atoll
Explanation:
the circular type known as the an atoll forms around the edges of a volcanic island
Explain why chewing of boiled rice in the mouth for two minutes is chewing change?
Answer:
The rice changes form inside of the mouth when chewing
What occurs during the synthesis stage of the cell cycle?
A. The cell grows, but keeps the same amount of chromosomes.
B. The cell shrinks, but keep the same amount of chromosomes.
C. All DNA is copied, doubling the number of chromosomes.
D. The cell spits, reducing the number of chromosomes by half.
Answer:
its (c)
Explanation:
S phase, or synthesis, is the phase of the cell cycle when DNA packaged into chromosomes is replicated. This event is an essential aspect of the cell cycle because replication allows for each cell created by cell division to have the same genetic make-up.I tried my best.pls mark me as branliest answer plz plzLa estructura de los epopeyas
Answer:
. Valora la importancia de los experimentos científicos en torno a la generación espon- tánea.
Explanat. Valora la importancia de los experimentos científicos en torno a la generación espon- tánea.
ion:
Mention any 2 uses of algae.
Many plant pathologists believe that plant resistance is based upon the interplay of different signaling molecules? Justified.
Answer:
Yes.
Explanation:
Many plant pathologists believe that plant resistance is based upon the interplay of different signaling molecules because plants have various signaling molecules that plays a great role in their growth and development. Ethylene, auxin, cytokinins, gibberellins, and abscisic acid are the growth regulators that controls the growth of plants in different conditions i.e. in resistance. These signals leads the plant to take measures in difficult situations experience by the plants so in this way the plant is resistance to the harsh environmental condition.
In Meiosis, the cells produced are what?
Answer:
daughter cells
Explanation:
sorry have to write for 20 characters
The digestive and excretory systems project explaining macromolecules in the body
Answer:
Our digestive system has the ability to convert macromolecules into micromolecules.
Explanation:
Our digestive system has the ability to convert macromolecules into micromolecules with the help of certain enzymes. Carbohydrate is a macromolecule which is converted into glucose molecule with the help of saliva which is an enzyme present in the mouth, protein is also a macromolecule that is converted into amino acid so that our body cells can absorb it and fats are also macromolecules which can be converted into fatty acids with the help of digestive system. The cells produced waste materials such as carbondioxide gas and nitrogenous material which can be excreted through excretory system such as lungs and urinary bladder.
Which of the following statements is FALSE for photosynthesis?
Select one:
a. Carbon dioxide is produced in the light independent reactions for use in cellular respiration.
b. Light energy from the sun is absorbed by pigments in the leaf and used to reduce carbon atoms in the production of glucose.
c. Energy, in the form of ATP, is used in the light independent reactions to create glucose.
d. Light energy from the sun is absorbed by pigments in the leaf and used to form glucose to be used by organisms in cellular respiration.
The false statement about photosynthesis is Light energy from the sun is absorbed by pigments in the leaf and used to form glucose to be used by organisms in cellular respiration. The correct option is d.
What is photosynthesis?Photosynthesis is a chemical process by which plants make their food. The process includes sunlight which is trapped by chlorophyll, water, and carbon dioxide which is converted into glucose.
The glucose produced by plants is used by them to carry out their process of theirs, not the organisms in cellular respiration.
Thus, the correct option is d. Light energy from the sun is absorbed by pigments in the leaf and used to create glucose to be used by organisms in cellular respiration.
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Both starch and cellulose are made by stringing together many glucose molecules, but starch is easily digested by humans, while cellulose is indigestible. The starch polysaccharide has every bond occurring below the sugar rings while the bonds in cellulose alternate between one bond above the ring and the next below the ring. How can you explain humans' inability to digest cellulose
Answer:
See explanation
Explanation:
The ability of humans to digest starch and cellulose depends largely on the presence or absence of enzymes that can hydrolyze the starch or cellulose linkages thereby making it digestible.
Starch can easily be digested but cellulose can not be easily be digested because human beings lack the necessary enzyme responsible for hydrolysing the beta-acetyl linkages in cellulose. As a result of this, humans do not metabolise cellulose.
give your pinterest I'd pls
Answer:
okis
Explanation:
My pinterest Alli but with a face like this (Alli:P)
*K-selected
*r-selected
If a group of (. )
species lived together in a small area, the carrying capacity of that area would probably
collapse quickly.
Explanation: Unlike the r-selected species, the size of the population of K-selected species is fairly the same with time. The r-selected species generally lies below the carrying capacity, and the size of the population is density-independent. On the other hand, the K-selected species are generally at or close to the carrying capacity and the size of the population is density-dependent.
All carbonate minerals contain the elements_____
a. silicon and oxygen
b. carbon and three oxygen atoms
c. carbon dioxide and oxygen
d. sulfur and four carbon oxygen atoms
What are the two reactions in the process of photosynthesis?
A
intermediate and beginning
B
light reaction and the Calvin cycle
C
Krebs cycle and glycolysis
D
respiration and exhalation
Answer:
B
Explanation:
light reactions take place in the thylakoids and Calvin cycle takes place in the stroma.
Determine which of the following statements is true about energy in ecosystems. A. Producers are able to convert 40% of the sun’s energy into chemical energy. B. 30% of the sun’s energy cannot be absorbed by producers because it is in the wrong wavelength of light. C. Producers only absorb 40% of the sun’s energy, most of which is lost during photosynthesis. D. Producers absorb 5% of the sun’s energy, and reflect 5% of the sun’s energy.
Answer:
A. Producers are able to convert 40% of the sun’s energy into chemical energy.
Explanation:
Energy in an ecosystem must be transferred in the ecosystem. The primary source of energy in an ecosystem is the sun. The terrestrial ecosystem mostly consists of plants and marine ecosystems. As energy flow in an ecosystem is unidirectional. It passed from the organism from one tropic level to another. Only 10% of the energy is available to them.Answer:
Its C
Explanation:
Lateral meristem meaning
Answer:
Secondary meristems, or lateral meristems, are responsible for secondary growth, or an increase in the girth and thickness of the stem. Meristems are crucial for wound healing because they regenerate from other cells in damaged tissues.
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