Answer:
the closest answer is b.
Explanation:
The nucleus contains most of the DNA in a cell and this DNA is called the chromosomal DNA.
Each chromosome is constructed from DNA that has been tightly wound around proteins called histones numerous times to support its structure. Thus, option B is correct.
What is the role of chromosomes?DNA, the cell's genetic material, is kept in the nucleus. In the nucleus, DNA is often found wrapped up and linked to a variety of histone proteins in a structure called chromatin that is loosely contained.
Chromatin coils tightly and condenses to produce chromosomes just before a cell divides. A DNA molecule called a chromosome is where an organism's genetic code is located.
When a cell is not dividing, chromosomes cannot be seen in the nucleus, not even under a microscope.
Therefore, a chromosome is the structure that contains the DNA of the cell.
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Describe the importance of receptors in cellular communication
Answer:
Cells have proteins called receptors that bind to signaling molecules and initiate a physiological response. Different receptors are specific for different molecules. ... This is important because most signaling molecules are either too big or too charged to cross a cell's plasma membrane
Explanation:
hope this helps you have a good day
Receptors are transmembrane proteins, that bind to signaling molecules outside the cell and later transmit the signal through a sequence of molecular switches to internal signaling pathways.
What are types of cellular receptors?Membrane receptors fall into three major classes namely G-protein-coupled receptors, ion channel receptors, and enzyme-linked receptors.
Not all receptors exist on the exterior of the cell. Some exist deep inside the cell, or even in the nucleus. These receptors typically bind to molecules which can pass through the plasma membrane, such as gases like nitrous oxide and steroid hormones like estrogen.
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In eukaryotic cells, cellular respiration (aerobic) occurs in the _____
Nucleus
Chloroplast
Mitochondria
Cell membrane
Cytoplasm
Which of the following causes water from deep currents to rise to the surface to replace warm currents?
a. the flow of warm currents from the equator toward the poles
b. freezing of the surface of the water increased salinity due to evaporation
c. increased salinity due to evaporation
d. squeezing solids out of the ice down into the water below
Answer: The flow of warm currents from the equator toward the poles
Explanation:The flow of warm currents from the equator toward the poles causes water from deep currents to rise to the surface to replace warm currents.
Answer:
c. increased salinity due to evaporation
Explanation:
The nucleus includes all of the following structures EXCEPT
a
cytoplasm.
b
a nuclear envelope.
c
DNA.
d
a nucleolus.
Answer:
A. Cytoplasm
Explanation:
Cytoplasm is outside of the organelles, and is the jelly-like substance that holds all of the organelles and cell parts in place.
So, cytoplasm is not within the nucleus, because it is outside of the organelles, such as the nucleus.
On the other hand, the nuclear envelope, DNA, and nucleolus are all in the nucleus.
The nucleus includes all of the following structures except cytoplasm.
Thus, Cytoplasm is the name for the liquid that makes up cells. It includes additional organelles suspended in the cytosol along with filaments, ions, proteins, and macromolecular structures.
However, recent findings imply that the conventional notion of cytoplasm is no longer accurate. It was thought to be a fluid-like substance decades ago, but current research shows that it is more like liquids that create glass.
With the exception of the nucleus, the cytoplasm of eukaryotic cells is associated with the contents of the cell. Prokaryotic cells, however, lack a distinct nuclear membrane and instead store their genetic material in their cytoplasm.
Thus, The nucleus includes all of the following structures except cytoplasm.
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The biological process that has led to the greatest transformation of life on Earth is
Oa
b
Ос
Od
chemosynthesis
nitrogen fixation
photosynthesis
cellular respiration
Answer:
The biological process that has led to the greatest transformation of life on Earth is chemosynthesis.
Explanation:
Chemosynthesis is a process that allows the production of inorganic molecules in organic matter, through the oxidation of molecules such as carbon dioxide (CO₂). A clear example of this is the photosynthesis carried out by plants, taking advantage of CO₂ to generate their nutrients.
It is proposed that chemosynthesis was responsible for generating organic matter from inorganic molecules that existed on earth before the origin of life. It was perhaps the first metabolic reaction that arose on earth. Photosynthesis and cellular respiration are processes that follow chemosynthesis.
The other options are not correct, because cellular respiration, biological nitrogen fixation and photosynthesis appeared on earth after the origin of living organisms.
The total energy in our universe -
A (will not change,but can transform to other types
B ( changes and expands over time)
C ( only changes forms once)
60 milligrams=____kg?
4.5 centimeters=___km?
Answer:
60 milligrams= 6e-5 kg?
4.5 centimeters= 4.5e-5 km?
Explanation:
How are map grid lines like landmarks? How are they different?
3. Ashley Robert is a commercial pilot who worked in Ninoy Aquino International airport. Abruptly in
the sky, he noticed a thunderstorm approaching to their plane. Therefore, he decided to have a higher altitude for the passengers' safety. What would be the reason why pilot Robert did that kind of
decision?
a. To lessen the gas encounter to have a safe travel and landing.
b. To lessen the pressure in the aircraft wings.
c. To urge his eagerness in reaching the atmosphere
d. To experience an unforgettable event.
Answer:
To lessen the gas encounter to have a safe travel and landing.
the information in DNA i. the nucleus is used to produce
A. proteins
B.Amino acids
C. Lipids
D. all the above
The nucleus's DNA contains information that is used to make proteins, so the correct option is a. proteins.
The genetic instructions that control the order of amino acids in proteins are found in DNA. Protein synthesis entails the transcription of DNA into messenger RNA (mRNA) and the subsequent translation of mRNA into a particular sequence of amino acids that constitute proteins.
Even though lipids are significant molecules involved in numerous physiological processes, DNA-based instructions do not directly govern how lipids are produced. Different cellular functions and enzymes control the synthesis of lipids.
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Skin tanning is an example of which adaptation technique? O A behavioral adaptation OB. cultural adaptation OC. structural adaptation OD. physiological adaptation
Answer:
Physiological
Explanation:
Definition
A metabolic or physiologic adjustment within the cell, or tissues, of an organism in response to an environmental stimulus resulting in the improved ability of that organism to cope with its changing environment
Answer:
C) structural adaption
Explanation:
Structural adaptations are physical features of an organism like the bill on a bird or the fur on a bear. Other adaptations are behavioral. Behavioral adaptations are the things organisms do to survive. For example, bird calls and migration are behavioral adaptations. Adaptations are the result of evolution.
how does a thermostat regulate temperature
Answer:
yes
Explanation:
yes bc when it gets cold it goes down and when it gets hot it goes up
Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane
Answer: The DNA located in the nucleus of the cell. ATP is being rapidly consumed near the cellular membrane.
Explanation:
How does a cold day affect enzyme activity during photosynthesis?
Answer:
At low temperatures, between 32 and 50 degrees Fahrenheit – 0 and 10 degrees Celsius – the enzymes that carry outphotosynthesis do not work efficiently, and this decreases the photosynthetic rate. This leads to a decrease in glucose production and will result in stunted growth.
29. ) Chromosomes are duplicated in the ______ phase
a.) G2
b.) M phase
c.) G0
d.) G1
e.) S phase
Answer:
Interphase (A.K.A. S Phase)
Explanation:
(Hope this helps)
Which of the following organisms is found in grasslands?
a. cheetah
b. rhea
C. pangolin
d. hyena
Answer:
i wanna say B
Explanation:
According to the question, option b rhea.
The largest South American bird, rheas are flightless and resemble ostriches.
What is the most common organism in grasslands?A temperate grassland is a biome where grass is the dominant plant. Because of the lack of moisture in this environment, trees and shrubs cannot grow in temperate grasslands and the main plants found are grasses and flowers.
Thus, option "B" is correct.
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At which stage is glucose broken into smaller molecules? O before cellular respiration begins Oduring the first stage of cellular respiration during the second stage of cellular respiration Oat the end of cellular respiration
Answer: The first stage of cellular respiration, called glycolysis, takes place in the cytoplasm.
Explanation:
In this step, enzymes split a molecule of glucose into two molecules of pyruvate, which releases energy that is transferred to ATP.
hope this helps!
During cellular respiration, the lysis of glucose is the first step for the oxidation of glucose, hence option B is correct.
What is cellular respiration?Cellular respiration is the process through which cells get energy in the presence of oxygen from organic molecules and release carbon dioxide as a by-product.
There are several steps for cellular respiration through which energy is extracted from the glucose, the first step glucose is breakdowns to convert into pyruvate and then this oxidizes through the citric acid cycle and produces electrons that generate ATP.
The breaking of glucose through glycolysis which is the first step of cellular respiration generates electrons that flow through the electron transport chain and generate ATP as the cellular energy product.
Therefore, glucose is broken into smaller molecules in the first stage of cellular respiration.
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What are base unit measurements for the metric system?
A. feet, gallon and pound
B. grams, liters, and meters
C. Liters, pints, and miles
D. millilites, milligrams and millimeters
Which statement about ionic bonds is correct? A. Ionic bonds form when similarly charged ions are attracted to each other B. Ionic bonds form when electrons are shared C. Ionic bonds form when oppositely charged ions are attracted to each other D. Ionic bonds form when a protons are shared between atoms.
Answer:
Option C. Ionic bonds form when oppositely charged ions are attracted to each other
Explanation:
An ionic bond is a bond that forms when two oppositely charged ions are electrostatically attracted to one other, where metal is an anion and nonmetal is a cation.
For instance, the bond between NaCl is an ionic bond where sodium is metal and anion (Na⁺) and chlorine is nonmetal and cation (Cl⁻) and makes salt.
Thus, the correct answer is - option C.
Answer:
the answer is C
Explanation:
im late sorry
What is the meaning of Taxonomy?
Answer:
It is a classification of something, especially organisms.
For example:
the taxonomy of these birds
This means the classifications of different types of birds
Hope this helps!
Answer:
I'm late but anyways i don't want the brainiest only a thank you
Explanation:
Taxonomy- is the scientific process of grouping living and non living things and organisms according to their specific groups
Which image shows a landform with low elevation and low relief?
Answer:
The one with clouds or c
Explanation:
because on ed that's the correct answer
Answer:
its c
Explanation:
please help will give brainliest!
-
The following factors will determine what type of volcano will form. Check all that apply.
The viscosity of the magma.
The gas content of the magma.
The silica content of the magma.
The geologic time period in which the volcano was formed.
Answer: The first three:
The viscosity of the magma.
The gas content of the magma.
The silica content of the magma.
Burning question: is it possible for life to thrive on earth without soil?
Answer: No
We get many crops from soil. If we do not get enough crops, we will run out of food and may die. The answer is no.
Hope this helps you!
Helpppppp meeeeeeeeeeeeeeeee
Answer: C. increases, increases, increases
Explanation: With adrenaline, more glucose is released from the liver into the blood if it has dropped too low. Pulse rate also increases along with more muscle strength which, ultimately, causes your breathing rate to increase.
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do you think you can help me with this?
How do waves interact with different materials?
Answer:
Waves interact with matter in several ways. The interactions occur when waves pass from one medium to another. Besides bouncing back like an echo, waves may bend or spread out when they strike a new medium. These three ways that waves may interact with matter are called reflection, refraction, and diffraction.
Explanation:
Waves interact with materials by eroding them over time. The way they the material erodes and how long it takes depends on the type of material. For example, less dense rock will break apart when it erodes, and it will not take as long. Metal will rust when it gets eroded, and it will take longer to be fully eroded.
Ty and Crystal are working together to learn about surface tension. They each add pennies to their own cup of water to see how many they can add before the cup overflows. Ty is able to add 15 pennies.
Crystal is able to add 38.
What should their next step be?
They should each claim that their answer is right
They should discuss differences in their methods.
They should record their results and move on to a different investigation
They should repeat the experiment using different pennies.
Answer:
B). They should discuss differences in their method.
Explanation:
As per the question, the next step in the given process would be 'the discussion of differences that exist between their methods which they are using to fill the cup.' This would help them understand how the difference in methods of putting water into the cup directly affects the tendency of the liquid to contract into the least surface area. They would also get to know how temperature affects the increase or decrease of surface tension. Thus, option B is the correct answer.
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In the succession timeline we completed during class, we learned that mosses and lichens are able to grow on rocks and break them down into soil. Mosses and lichens are best described as:
Pioneer species
Carnivores
Decomposers
Detritivores
a man walking at 0.5 m/s accelerates to a velocity of 0.6 m/s in 1 s. what is his acceleration?
Answer:
I'm not sure but the answer would be 1.2
9. The prefix mono- means “one" and the prefix poly-
means “many.” Some lipids are monounsaturated, and
others are polyunsaturated. Explain the difference
· between the fatty acids in these different types of lipids.
Answer:
Lipid molecules consist mainly of repeating units called fatty acids. ... Animals store fat as saturated fatty acids; plants store fat as unsaturated fatty acids. Types of lipids include triglycerides, phospholipids, and steroids. Each type consists of fatty acids and certain other molecules