Answers
Related Questions
DNA is coiled into chromosomes in a cells
Answers
The right answer is in a cell's nucleus.
The nucleus contains the DNA (deoxyribonucleic acid) on which is encrypted the genetic information: the chromosomes.
When the cell is not in a fission period, the DNA is pelletized and the chromosomes can not be seen. On the other hand, as soon as it enters the period of fission, the DNA unfolds and the chromosomes are clearly visible in batonets, so that they can be doubled.
Which is the first step in the scientific method
Answers
A person makes an observation they piques an interest or curiosity.
Can a dead cell carry out diffusion and active transport?
Answers
No, a dead cell cannot carry out active transport as it requires ATP, which dead cells do not produce. Diffusion may continue passively for some time, but active processes cease with cell death.
Can a dead cell carry out diffusion and active transport? No, a dead cell cannot carry out active transport because active transport requires energy, which is usually obtained from ATP. Living cells use metabolic energy to maintain concentration gradients of ions and other substances across their membranes. This energy is particularly crucial for active transport processes such as the Na+-K+ ATPase pumps in red blood cells, which maintain the imbalance of sodium and potassium ions across the cell membrane. Once a cell dies, it ceases to produce ATP, thus halting active transport mechanisms. While diffusion is a passive process that might continue for a time after a cell perishes due to existing concentration gradients, without ATP, the active transport processes cannot occur in a dead cell.
What conducts electric current in solutions?
elements
electrolytes
atoms
molecules
Answers
Answer:
Electrolytes
Explanation:
An electrolyte is a substance that conducts electricity when dissolved in a polar solution e.g water. They are particles that carry a positive or negative electric charge called Cations and Anions respectively.
Electrolyte can also be referred to as a substance that dissociates into ions in solution and acquires the capacity to conduct electric currents. It becomes an ionic conductor when fused or dissolved in a suitable solvent.
Electrolytes include Sodium, pottasium, calcium, bicarbonate and magnesium amongst other body minerals. These minerals carry a small electric charge in fluid environment.
Electrolytes conducts electric current in solutions. Therefore, the correct option is option B.
In order for our bodies to function properly, electrolytes are necessary, and realising this can do a lot for our general health. They are minerals that, when dissolved in water, take on an electrical charge and are necessary for a number of physiological activities. Sodium is one of the most well-known electrolytes. It is essential for maintaining the equilibrium of bodily fluids, neuron activity, and muscular contraction. Sodium influences how much water the body retains, which influences blood pressure. However, consuming too much sodium can result in health problems like high blood pressure and fluid retention.
Therefore, the correct option is option B.
To know more about electrolytes, here:
https://brainly.com/question/32477009
#SPJ6
What are microwaves are used for?
A. cell phone transmitters and cooking food
B. T.V. signals
C. visible light
Answers
What is the name of the organelle found in animal cells whose function is energy production?
A. Mitochondrion
B. Chlorophyll
C. Chloroplast
D. Nucleus
Answers
Answer:
Mitochondrion
Explanation:
Which of the following flower tissues is reproductive?
carpel
petal
sepal
tepal
Answers
Answer: a. Carpel flower tissues is reproductive.
Explanation: The carpel is present in the inner part of a flower known as a female reproductive organ. A carpel consists of a style, an ovary, and a stigma. The style is a long, slender tube that connects the stigma and the ovary. The Stigma is present in the top, sticky area of a carpel, where pollination takes place. Stigma is a place where the pollen germination takes place once the pollen deposited on the stigma. An ovary is a female reproductive part, which produces ova.
The elastic rebound theory suggests which of the following?
Answers
Answer;
The elastic rebound theory suggest that; Most earthquakes are produced by the rapid release of energy stored in rock that has been subjected to great forces.
Explanation;
The elastic rebound theory was suggested by Henry Feilding Reid, who made observations and summarized that the earthquake occurs as a consequence of an elastic rebound of elastic strain energy that was previously stored in the rocks on either side of the fault.
The elastic-rebound theory explains how energy is produced when an earthquake occurs. According to this theory as adjoining plates on the Earth's surface move in opposite directions, then the rocks which span the opposing sides of the incipient fault are subjected to extreme shear stress.
The Elastic Rebound Theory explains the phenomenon of earthquakes caused by the sudden release of stored energy in strained rocks. When the stress exceeds the rock's strength, it fractures and rebounds, causing an earthquake.
Explanation:The Elastic Rebound Theory explains how energy is stored in rocks and is then released once the rocks crack or rupture, causing an earthquake. This theory is highly related to the study of tectonic plate movements and earthquakes. In a strained rock formation, when the stress exceeds the rock's strength, the rock fractures and subsequently rebounds, causing it to shake or vibrate leading to an earthquake. This displacement or movement of rocks is sudden and rapid, thus the term 'rebound'.
https://brainly.com/question/34326481
#SPJ6
A triglyceride that is liquid at room temperature
Answers
A triglyceride that is liquid at room temperature is called OIL
LIPIDS (TRIGLYCERIDES):
Lipids are a type of biomolecule found in nature. They can be sterols, triglycerides, unsaturated fats, saturated fats, phospholipids etc. Triglyceride is a form of lipid formed from the esterification of a glycerol and three fatty acids. However, triglycerides can either be solid or liquid at room temperature. Solid triglycerides are called FATS while liquid triglycerides are called OILS.Therefore, a triglyceride that is liquid at room temperature is called OIL.
Learn more: https://brainly.com/question/5096426?referrer=searchResults
The farming methods promoted by the California Ricelands Habitat Partnership are best described as beneficial to both farmers and wetland species because _______. Answer: The farming methods promoted by the California Ricelands Habitat Partnership are best described as beneficial to both farmers and wetland species because California Rice Commission and individual growers to further enhance the habitat [ value of California’s rice fields to waterbirds. This collective approach creates synergy for fully realizing the wildlife values in California rice
Answers
The farming methods promoted by the California Ricelands Habitat Partnership are best described as beneficial to both farmers and wetland species because the foraging birds there eats the remains or leftover rice in the field and in turn overwhelm the ground making tilling additional.
This benefits both the birds and farmers as birds gain food from there and the farmers get a free tilling of their land.
Which of the following is true about unicellular organisms?? URGENT
A they often have specialized cells
B they are made up of one cell
C they lack organelles
D they are all plants
Answers
The correct answer is B, unicellular organisms are made up of one cell. They can have complex structures and functions, but they do not have specialized cells, are not all plants, and do not lack organelles.
The subject at hand is unicellular organisms. When considering unicellular organisms, the following statement is true: they are made up of one cell. Therefore, the correct answer to the question is B - they are made up of one cell. Unicellular organisms may have complex internal structures and can perform all the life functions within that single cell. They may have organelles and specialized structures, such as flagella for movement. However, unicellular organisms do not have specialized cells since each organism is comprised of a single cell. They are not all plants but can be found across various classifications such as bacteria, protozoa, and some algae.
According to cell theory, which activity is impossible?
A. Heart cells forming from other heart cells
B. Plants using energy from the sun
C. Cells being formed from pure water
D. Eukaryotes being in a multicellular organism
Answers
The correct answer is option (c). Cells being formed from pure water.
The cell is composed of many different substances. All the different substances of the cell cannot be obtained by pure water only.
The pure water only contains hydrogen and oxygen molecules. But, the most abundant atom in the cell is carbon and also have nitrogen, sulfur and other atoms. Pure water cannot provide atoms other than hydrogen and oxygen, so, it is impossible for the cell to be formed by pure water.
Describe the relationship between carrying capacity and earths resources
Answers
Water can absorb more heat than land, but water does not increase in temperature as fast because it has a high A) polarity. B) surface area. C) heat capacity. D) surface tension.
Answers
It's actually the hydrogen bonds but this was the closest answer to hydrogen bonding.
Answer;
-Heat capacity
-Water can absorb more heat than land, but water does not increase in temperature as fast because it has a high heat capacity.
Explanation;
-Heat capacity is the capability of water to absorb heat without undergoing an increase in temperature. For water to increase in temperature, its molecules must be made to move faster within the water; which requires breaking hydrogen bonds that absorbs heat.
Which of the following IS NOT a reason why estuaries are important?
they provide a nursery for many types of fish
they are the least polluted areas of the ocean.
they are extremely productive
they are great for transporting goods for manufacturing and trade
they control flooding by acting as a buffer
Answers
they control flooding by acting as a buffer
Estuaries refers to a coastal where freshwater and salt water mixed
hope this helps
Turkins, a cross between a chicken and a turkey, are raised on some farms in Wyoming. This is an example of _____.
a)selective breeding
b)hybridization
c)cloning
d)recombinant DNA
Answers
Answer:
b) hybridization
Explanation:
Hybridization is the process of generating an offspring known as a hybrid from a cross between two individuals belonging two different species in order to accommodate the characters of these species into a single individual.
Since chicken and turkey are different species, a cross between them would lead to the generation of a hybrid known as Turkin.
Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and genetic variation. What are two main sources that lead to increased genetic variation?(((((Both answers must be selected.))))) A) Selective breeding, B) Gamete mutations, C) Recombination, D) Genetic drift
Answers
Answer:
B) Gamete mutations, C) Recombination
Explanation:
Any random changes in the DNA of gametes are called as gamete mutations. These mutations are transmitted to the next generation via gametes and thereby the genetic variations are increased.
Recombination is the production of new gene combinations. Crossing over during meiosis I of gamete formation add new gene combinations to gametes. Random fertilization of these gametes add even more genetic variations to the progeny.
Cells function together to form tissues. The four main types of tissues in animals are _____.
epithelial
blood
connective
muscular
nervous
bone
Answers
In a dihybrid cross, the F2 will have nine genotypes, but only four phenotypes because the (Homozygous, Heterozygous) genes cause the (Recessive, Dominant) traits to mask the (Dominant, Recessive) traits.
Answers
SOS:
The answers is:
In a dihybrid cross, the F2 will have nine genotypes, but only four phenotypes because the Heterozygous genes cause the Dominant traits to mask the Recessive traits.
Hope this helps!
(Please rate Brainliest!)
Answer
heterozygus, dominant , ressesive traits
Explanation:
i did this test and got it right
What is an important function of the mitochondria?
Answers
Explanation:
Hi!
Let's solve this!
Mitochondria with organelles present in eukaryotic cells. In them, cellular respiration occurs, a process by which carbon dioxide is converted into oxygen. In addition, the Krebs cycle that is part of cellular respiration occurs.
In plant, algae, fungi, and most bacteria cells, there is a rigid layer that surrounds the cell membrane and gives protection, support, and shape to the cell. what is this layer called?
a. cell wall
b. cytoplasm
c. chloroplast
d. plasma membrane
Answers
Organisms at the bottom of the pyramid produce enough usable chemical energy to support the entire ecosystem through
A) predation.
B) photosynthesis.
C) cell respiration.
D) anaerobic respiration.
Answers
-Hope I helped!
Answer: The correct answer is -
B) photosynthesis
Explanation:
Photosynthesis can be described as process of creating food (in the form of glucose) in green plants, algae, and some protist (that are called producers). It uses inorganic molecules that are carbon dioxide and water in the presence of energy from sunlight to synthesise glucose and release oxygen as waste in surroundings.
It takes place in the specialized membrane bound organelles, called chloroplast.
Producers occupy the base of any food chain, which can be represented by energy pyramid, thus they produce enough chemical energy to support the entire ecosystem through photosynthesis.
Desert plants are characterized by
Answers
- Long roots , that could reach deep within the ground for water sources
- Thin leaves that make them able to sustain more water against the hot weather
hope this helps
Is cooking an egg endothermic or exothermic chemical reaction?
Answers
Answer:
1:endo
2:exo
3:exo
4:neither
Explanation:
What is the purpose of the biogeochemical cycles?
A.to cycle energy through a food chain
B.to recycle matter through the biosphere
C.to recycle rocks through the layers of Earth
D.to cycle nutrients through the human body
Answers
The purpose of the biogeochemical cycles is to cycle energy through a food chain.
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
What is it called when a molecule uses energy to move across a semipermeable membrane?
A. Diffusion
B. Active transport
C. Passive transport
D. Osmosis
Answers
So, option B is your answer.
Hope this helps!
Answer: Active Transport
Explanation:
The movement of the particles across membrane needs energy. Energy is required in the condition where there is a movement of particles from a lower concentration to higher concentration.
It requires cellular energy for the movement of the particles. The larger molecules needs energy to move across concentration gradient.
Which element in the southwestern desert ecosystem is abiotic?
Answers
Abiotic being non-living or sterile could cover a lot of elements in a desert ecosystem. Rocks, water, air to name a few.
Which of the following best describes the solar radiation absorbed by and radiated from earth?
a. Most incoming solar energy is absorbed by the atmosphere.
b. Only a small fraction of energy radiating from Earth is from the atmosphere.
c. The Earth’s surface is responsible for a small fraction of heat radiation to space.
d. Earth’s surface absorbs little of the energy that strikes as solar radiation.
Answers
Answer: c. The Earth’s surface is responsible for a small fraction of heat radiation to space.
Explanation:
In later ages the large amount of sun's energy is reflected back by the terrestrial surface back to the space. But now due to the abundance of large concentration of greenhouse gases in the atmosphere is responsible for the absorption of thermal energy from sunlight by these gases causing the atmosphere to be hot. This is the reason of global warming. Now only small fraction of heat is radiated back to the space.
1.
Which of the following is true about ice sheets?
They are the smallest type of glacier.
They flow in all directions.
They usually flow down valleys.
They are found only in high mountain areas.
2.
The Antarctic Ice Sheet in the Southern Hemisphere ____.
is the only true ice sheet that remains on the planet
holds almost one-half of Earth’s salt water
holds almost two-thirds of Earth’s fresh water
contains about one-fourth of the world’s ice
3.
A thick ice mass that forms over the land from the accumulation, compaction, and recrys1.
Which of the following is true about ice sheets?
They are the smallest type of glacier.
They flow in all directions.
They usually flow down valleys.
They are found only in high mountain areas.
2.
The Antarctic Ice Sheet in the Southern Hemisphere ____.
is the only true ice sheet that remains on the planet
holds almost one-half of Earth’s salt water
holds almost two-thirds of Earth’s fresh water
contains about one-fourth of the world’s ice
3.
A thick ice mass that forms over the land from the accumulation, compaction, and recrys ...?
Answers
1. The statement that is true above Ice sheets is that they flow in all directions. The answer would be the second option.
2. The Antarctic Ice Sheet in the Southern Hemisphere holds almost two-thirds of Earth's fresh water. The answer would be the third option.
Hope these answers help.
a behavior in which animals move toward or away from a light source.
Answers
Answer: Phototaxis
Explanation: Phototaxis is the phenomenon by which locomotory movement of the organism occurs towards or away from the stimulus of the light.
This is advantageous for the phototropic organism as they can move efficiently towards the sunlight which helps them to make food by the help of sunlight and other substances.
The phototaxis is called positive if the movement is towards sunlight and negative if the movement is against light.