Which is present only in Eukaryotic cells?
A. Cell membrane
B. chromosomes
C. DNA
D. nucleus
Answers
An eukaryotic cell has a well-defined nucleus which is not present in the prokaryotic cell. Thus, the correct option is D.
What is a eukaryotic cell?A eukaryotic cell is a true cell. This cell is different from the prokaryotic cell. The eukaryotic cell has all the membrane-bound organelles such as mitochondria and chloroplast. Eukaryotic cell has a well-defined nucleus which is absent in the prokaryotic cell.
Nucleus is known as the brain of cell. Nucleus contains all the genetic information of the cell in the form of DNA (deoxyribonucleic acid).
Eukaryotic cells are present in all the higher organisms including plants and animals.
Therefore, the correct option is D.
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Related Questions
what is found in plant cells but not yeast cells
Answers
Answer:
The plant cell wall is made up of cellulose but that of the yeast is a fungi and its cell wall is made up of chitin
Answer:
Yeast cells lack chloroplasts.
Explanation:
As heterotrophs, yeasts. They cannot make their own food through photosynthesis. Chloroplasts are absent in yeast cells.
____________________
Hope this helps!
Have a great day!
What is the term used to describe a partial shadow
A.umbra
B.penumbra
Answers
Answer:
B. penumbra
Explanation:
umbra is a dark type pokemon and darkness isn't partially a shadow process of elimination
a sodium potassium pump within a cell membrane requires energy to move sodium and potassium ions into or out of the cell the movement of glucose into and out of a cell does not require energy
Answers
Answer:
it's energy correct
Explanation:
hope u new itmarry ChristmasWhich organ-system carries lipids from the gastrointestinal tract to blood?
a. Respiratory system
b. Circulatory system
c. Digestive system
d. Endocrine system
Answers
The circulatory system, also known as the cardiovascular system, is responsible for carrying lipids from the gastrointestinal tract to the blood. The final answer is (b).
After the ingestion of lipids through food, they undergo digestion in the digestive system, primarily in the small intestine. During digestion, lipids are broken down into smaller molecules called fatty acids and glycerol.Once the lipids are digested and absorbed by the cells lining the small intestine, they are transported into the lymphatic system in structures called lacteals.The lymphatic system eventually merges with the bloodstream, and the lipids are then carried through the circulatory system, specifically the blood vessels, to various tissues and organs throughout the body.
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Glycolysis that starts with glycogen instead of glucose can be considered to have a higher energy yield because:
A. Phosphorolysis reactions cleave bonds with phosphate instead of water.
B. Phosphorylase is a better enzyme than hexokinase
C. Phosphorylase produces a glucose phosphate without spending an ATP to do it
D. All of these
Answers
Answer:
A
Explanation:
The answer is a Because Phosphorolysis reactions cleave bonds with phosphate instead of water (: just trust me
Glycolysis that starts with glycogen instead of glucose can be considered to have a higher energy yield because phosphorolysis reactions cleave bonds with phosphate instead of water. The correct option is A.
What is glycolysis?Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons.
The metabolic process that changes glucose into pyruvate is known as glycolysis.
The high-energy molecules adenosine triphosphate and reduced nicotinamide adenine dinucleotide are created using the free energy released during this process. A series of ten enzyme-catalyzed processes make up glycolysis.
In contrast to phosphorolysis reactions, which cleave bonds with phosphate rather than water, glycolysis can be thought of as having a larger energy yield because it begins with glycogen rather than glucose.
Not producing adenosine 5′-triphosphate is not the primary goal of glycolysis; rather, it is to produce pyruvate for the trichloroacetic acid (TCA) cycle.
By boosting the ratio of NADH to NAD+, the glycolytic synthesis of pyruvate lowers the cytosol.
Thus, the correct option is A.
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When a surgeon begins to operate on a patient, she finds a growth located beneath the stomach. Which term is the best choice for describing the location of the growth relative to the surface of the skin?
deep
medial
anterior
superficial
Answers
Answer:
A) deep. Hope it helps! ❤️❤️
Answer: Deep.
Explanation: Right on Edge.
4. In a certain variety of plants, red flowers appear in the majority of plants and blue flowers appear in only a few plants. Which statement describes the two traits? ,
a. Both flower colors are dominant traits.
b. Red is a dominant trait and blue is a recessive trait.
c. Both flower colors are recessive traits.
d. Red is a recessive trait and blue is a dominant trait.
Answers
Answer:
b. Red is a dominant trait, and blue is a recessive trait.
Explanation:
Since red flowers appear in the majority of plants, they are dominant, as their phenotype red flowers are expressed the most frequently. However, since blue flowers appear in only a few plants, it is expressed less frequently and is less common, so it is suppressed by a dominant allele, making blue flowers recessive.
1. How can atoms become molecules ? bec of their electrons
Answers
Answer:
When two or more atoms link up, they create a molecule . A molecule of water is made of two atoms of hydrogen (H) and one atom of oxygen (O). The molecular mass is the sum of the masses of all the atoms in the molecule. A collection of molecules is called a compound.
Explanation:
hope this helps :D
Long question 7 marks.
Describe the process, development of Male gametophyte in flowering plants ?
Answers
Explanation:
The male gametophyte containing the generative cell splits into two sperm nuclei, one of which fuses with the egg, while the other degenerates. After fertilization of the egg, the diploid zygote is formed, which divides by mitosis to form the embryo. The scales of the cones are closed during development of the seed
Answer:
Androecium:
Androecium is the third whorl, which is the male reproductive part of the flower.
Unit:
Its units are called stamen.
Stamen:
Each stamen has a thread like filament at the free end of which anther is attached.
Anther:
Anther has pollen sacs in which haploid microspores (pollen grains) are produced through meiosis.
Process:
Each microspore germinates into the male gametophyte generation. During it, the nucleus of microspore undergoes mitosis ans produces two nuclei i.e. a tube nucleus and a generative nucleus. The generative nucleus again undergoes mitosis and produces two sperms. So, a germinated microspore has a tube nucleus and two sperms. All these structures are the male gametophyte generation of the plant.
What do we call the individual pieces used to construct larger molecules?
Answers
Answer:
individual pieces used to construct larger molecules are called monomers.
Explanation:
Brainliest pls !
postganglionic fibers from this site will control the thickness of the lens of the eye: a. celiac ganglion b. trigeminal nerve c. ciliary ganglion d. sphenopalatine ganglion e. vagus nerve
Answers
Postganglionic fibers from this site will control the thickness of the lens of the eye by ciliary ganglion. Option C is correct.
The ciliary ganglion is a small parasympathetic ganglion located behind the eye. Postganglionic fibers from the ciliary ganglion innervate the smooth muscle of the ciliary body, which is responsible for controlling the thickness or shape of the lens of the eye.
When these postganglionic fibers are stimulated, they cause the ciliary body to contract, resulting in a decrease in tension on the suspensory ligaments that hold the lens. This allows the lens to become thicker and more rounded, a process known as accommodation. Accommodation enables the eye to focus on near objects.
Hence, C. is the correct option.
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These plants have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. There is one type of spore, and the gametophyte generation grows outside of the spore wall. Which plant or plants am I describing? (SELECT ALL THAT APPLY) 000000000 Ferns Cycads Selaginella Lycopodium Conifers Ginkgo Hornworts Mosses Angiosperms 3 pts Liverworts
Answers
The correct answers are: Ferns, Hornworts, Mosses, and Liverworts.
The plants that fit the given description are:
Ferns: Ferns have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. Ferns produce one type of spore, and the gametophyte generation grows outside of the spore wall.Horworts: Hornworts also have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. Hornworts produce one type of spore, and the gametophyte generation grows outside of the spore wall.Mosses: Mosses have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. Mosses produce one type of spore, and the gametophyte generation grows outside of the spore wall.Liverworts: Liverworts also have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. Liverworts produce one type of spore, and the gametophyte generation grows outside of the spore wall.Therefore, the correct answers are: Ferns, Hornworts, Mosses, and Liverworts.
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The rabbit population increased during years when the death rate was (lower/higher) than the birth rate, reflecting a higher carrying capacity.
A) higher
B) lower
Answers
The rabbit population increased during years when the death rate was lower than the birth rate, reflecting a higher carrying capacity.
What is carrying capacity?The carrying capacity of an environment is described as the maximum population size of a biological species that can be sustained by that specific environment, given the food, habitat, water, and other resources available.
Population is known to refer to the number of people in a single area, whether it be a city or town, region, country, continent, or the world.
The primary and I think the most obvious cause of population growth is an imbalance between births and deaths.
In the diagram shown, we can see an increase or growth in population when the death rate increases depicting an imbalance between death and births.
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Muslims arrived in india ____ century
a) 6 century
b) 7 century
c) 8 century
d) 9 century
Answers
Answer:
7th century
hope you get ur answer ❤️❤️
Match the position to the closest estimation of its current career outlook.
agricultural engineer
landscape architect
agricultural managers
loss of more than 5 percent
:: growth of more than 15 percent
growth of less than 10 percent
Answers
Answer:
can you rephrase your question im not understaind it, if you can i can answer it for you
Explanation:
Which of the following is always an indication of a chemical change?
A. The total mass of material changes
B. A solid turns into a liquid
C. One substance dissolves into another substance
D. A new substance is produced
Answers
Answer:
a new substance is formed.
The evolution of the cuticle in plants was a key adaptation to terrestial living because
a. enhanced water loss.
b. enhanced absorption of nutrients from soil
c. allowed for an alternation of generation
d. helps plant to avoid drying up
Answers
The evolution of the cuticle in plants was a key adaptation to terrestrial living because it helps plants to avoid drying up.
Thus, the correct option is d. helps plant to avoid drying up.
In plants, the cuticle is a protective layer of waxy, hydrophobic substance produced by the epidermal cells. It is the layer of tissue that separates the aerial parts of the plant from the outside environment. It serves as a barrier to protect the plant from desiccation, UV radiation, and environmental stresses.The cuticle is thicker on leaves and shoots of plants that grow in dry environments, where the risk of water loss is greater.
The cuticle also helps to minimize water loss from the plant by limiting the amount of water that escapes from the plant's tissues by evaporation.Plants are considered the first organisms to live on land, and the evolution of the cuticle was a critical step in their transition from an aquatic to a terrestrial lifestyle. Without the cuticle, plants would have been unable to survive on land, as they would have dried out and died from desiccation.
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Paragraph explanation of biosynthesis
Answers
Answer: Biosynthesis is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis, simple compounds are modified, converted into other compounds, or joined together to form macromolecules. This process often consists of metabolic pathways.
What is the major way in which local farms help reduce greenhouse gas emissions?
O by improving local economies
O by producing healthier foods
O by decreasing food transportation costs
O by using less polluting farming methods
Answers
Answer:
d
Explanation:
Answer: The correct answer is by decreasing food transportation costs
Explanation: This has been confirmed correct.
The transportation of food by local farms raises greenhouse gas emissions, so reducing those lower the costs and impacts to the environment.
Energy in biology falls into two categories. Kinetic energy (aka cellular work) includes solute
transport, motion, and endergonic chemical reactions. Potential energy is the energy of position and
is an important tool to store energy in biology. Potential energy in biology includes covalent bonds
and chemical gradients. Which of the following is evidence of the potential energy of covalent
chemical bonds?
a
Triglycerides (CiaH36O2l3 store about twice as much energy as polysaccharides (CH2O)
All of the other choices are evidence of the potential energy of covalent bonds.
O Light and heat are released when cellulose (wood) is burned.
Exergonic hydrolysis of ATP powers motor proteins.
Answers
Answer:
A. Triglycerides (CiaH36O2l3 store about twice as much energy as polysaccharides (CH2O)
Explanation:
Energy, as stated in this question, can be of two types namely: kinetic energy and potential energy. Kinetic energy is the energy due to motion i.e the energy used to transport solute etc.
On the other hand, potential energy is the energy due to position like the energy stored in the covalent bonds of a molecule. Based on this question, the fact that triglycerides (a type of lipid) store about twice as much energy as polysaccharides (carbohydrate) is evidence that POTENTIAL ENERGY is stored in covalent bonds.
Too much logging in the oyamel fir forests could lead to the eastern monarch butterfly going extinct because _______. a. the entire population of the species spends winter in oyamel c. the winters are too cold in oyamel b. the butterflies breed in the oyamel fir trees d. the butterflies feed on the oyamel fir trees please select the best answer from the choices provided a b c d
Answers
Too much logging in the oyamel fir forests could lead to the eastern monarch butterfly going extinct because the entire population of the species spends winter in oyamel fir forests.
Why it is the correct option:
a. The oyamel fir forests serve as the winter home for the eastern monarch butterflies. The entire population of monarch butterflies moves to oyamel fir forests in Mexico during winters to protect themselves from the freezing cold temperatures of their natural, breeding habitat. So, too much logging of the oyamel fir trees will destroy the winter habitat of these butterflies, and hence will lead to the decline in their population.
Why the other options are incorrect:
b. the butterflies breed in the oyamel fir trees is an incorrect option because the monarch butterflies breed in their natural habitats in the US.
c. the winters are too cold in oyamel is an incorrect option because these butterflies move to oyamel forests to protect themselves from cold.
d. the butterflies feed on the oyamel fir trees is an incorrect option because the monarch butterflies feed on milkweed.
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what is sucrose made of? give the 2 monomers, the anomeric bond (alpha or beta) and the numbers (location) that the bond connects.
Answers
The sucrose molecule is made up of two monomers: glucose and fructose. The anomeric bond is an alpha-1,2-glycosidic bond that connects the carbon-1 atom of the glucose molecule to the carbon-2 atom of the fructose molecule.
Sucrose is a disaccharide composed of two monomers: glucose and fructose. The anomeric bond in sucrose is an alpha-1,2-glycosidic bond, which connects the alpha-anomeric carbon atom of glucose (C1) to the beta-anomeric carbon atom of fructose (C2). The bond is formed through a condensation reaction between the hydroxyl group on C1 of glucose and the hydroxyl group on C2 of fructose, resulting in the loss of a water molecule. The resulting molecule is sucrose, which is commonly known as table sugar.Learn more about monomers: https://brainly.com/question/30017579
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How long will the alligator need to warm up to a more favorable 30 ∘C ? (Assume that the specific heat of the reptilian body is the same as that of the mammalian body.)
Answers
The alligator would need approximately 17.5 hours to warm up to a more favorable temperature of 30 ∘C, assuming that the heat energy is transferred to it at a constant rate of 1000 W.
Assuming that the alligator's initial temperature is lower than the desired temperature of 30 ∘C, we can calculate the time required for the alligator to warm up using the formula:
Q = mcΔT
Where Q is the heat energy required to warm up the alligator, m is its mass, c is its specific heat capacity, and ΔT is the change in temperature.
We can assume that the mass of the alligator is 500 kg, and the specific heat capacity of its body is 3.5 kJ/kg⋅K, which is similar to the specific heat capacity of mammalian bodies. If the initial temperature of the alligator is 20 ∘C and the desired temperature is 30 ∘C, then the change in temperature, ΔT, is:
ΔT = 30 ∘C - 20 ∘C = 10 ∘C
Q = (500 kg) × (3.5 kJ/kg⋅K) × (10 ∘C) = 17,500 kJ
Assuming that the heat energy is transferred to the alligator at a rate of 1000 W, we can calculate the time required using the formula:
t = Q ÷ P
Where t is the time, Q is the heat energy required, and P is the power.
t = 17,500 kJ ÷ 1000 W = 17.5 hours
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Which complement pathway involves binding of complement proteins to the lipopolysaccharide layer of the bacterial cell wall?
Answers
Classic Pathway involves binding of complement proteins to the lipopolysaccharide layer of the bacterial cell wall
Bacteria are the prokaryotic and the unicellular organisms. They have a relatively simple cell structure then compared to the eukaryotic cells. They also do not possess any kind of membrane-bound organelles such as the nucleus. However, do they possess genetic material (DNA or the RNA) in the intracellular space called as the nucleoid
The Prokaryotic cells (i.e., Bacteria and the Archaea) are the fundamentally different from the eukaryotic cells that also constitute other forms of the life. Prokaryotic cells are defined by a much to simpler design than is found in eukaryotic cells.
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The ________ forms a direct neural connection between Broca's area and Wernicke's area.
a. corpus callosum
b. anterior commissure
c. fornix
d. stria terminalis
e. arcuate fasciculus
Answers
The e) arcuate fasciculus forms a direct neural connection between Broca's area and Wernicke's area. The correct answer is e. arcuate fasciculus.
The arcuate fasciculus is a white matter tract that connects the posterior superior temporal gyrus (Wernicke's area) with the posterior part of the inferior frontal gyrus (Broca's area) in the left hemisphere of the brain. This connection is important for language production and comprehension, as it allows for the integration of auditory information with motor planning for speech.
Arcuate fasciculus is a bundle of nerve fibers in the brain that connects two important language-related areas that are Broca's area and Wernicke's area. Broca's area is responsible for language production and Wernicke's area is responsible for language comprehension.
So, the e) arcuate fasciculus forms a direct neural connection between Broca's area and Wernicke's area.
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Someone plz help me :(
Answers
Answer:
C and B i think. sorry if its wrong
Explanation:
B and C
this anwser is basically just the x and y axis (which make a line graph)
I hope this is right! good luck :)
When water and oxygen combine to form hydrogen peroxide, hydrogen peroxide
is the
substrate
reactant
product
active site
Answers
Answer:
Product
Explanation:
Hydrogen Peroxide is the product formed when water and oxygen combine :-)
photoreceptors that are specialized for daylight vision, fine acuity, and color are called
Answers
Answer:
Cone cells
Explanation:
Cone cells, or cones, are photoreceptor cells in the retinas of vertebrates' eyes, including the human eye. They respond differently to light of different wavelengths, and the combination of their responses is responsible for color vision.
What is the advantage of sexual reproduction in lycophytes?
Answers
The advantage of sexual reproduction in lycophytes is the occurrence of variation in organism.
The main advantage of sexual reproduction in lycophytes is the happening of variation in the physiology as well as genetic characteristics of the plant. Lycophytes usually produce spores which is a type of asexual reproduction in which identical type of offspring produce from the spores.
While on the other hand, if the lycophytes reproduce from sexual reproduction then different types of offspring produce which has different characteristics then its parents so we can conclude that the advantage of sexual reproduction in lycophytes is the occurrence of variation in organism.
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how simple or even how complex can a phylogenetic tree become? is it commonly known and used among the scientific community or just something for representation?
Answers
Phylogenetic trees can become very complex depending on the type of data being represented. Generally, the more data that is available, the more complex the tree can become.
What is Phylogenetic?Phylogenetic is the study of the evolutionary relationships between organisms. It is used to reconstruct the evolutionary relationships between species, and to understand how features of living organisms have evolved over time. Phylogenetic analysis uses molecular and morphological data to identify similarities and differences between species and to trace the evolutionary history of a group of organisms.
In scientific studies, phylogenetic trees are used to represent the evolutionary relationships between species, and they can be extremely complex due to the vast amount of data that is available. Phylogenetic trees are commonly used in the scientific community to understand the relationships between different species.
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