Answer:
Explanation:
The structure of the two endoplasmic reticulum makes the difference.
Endoplasmic reticulum (ER) is located in the cytoplasm membrane in the eukaryotes and its divided into two the rough and smooth endoplasmic reticulum.
Rough ER has ribosomes which gives it the name rough because of its appearance. The ribosomes on rough ER helps it to specialize in the synthesis of proteins. proteins in a cell, are synthesize by it. The smooth endoplasmic reticulum lacks ribosome in its structure and cannot synthesize protein but lipids.
By what time had most small farms in the US been replaced by large farms?
A.The Agricultural Revolution
B.World War II
C.World War I
D.The Civil War
Answer:
Small and Family Farms. More than 90 percent of farms in the U.S. are classified as small, with a gross cash farm income of $250,000, or less. These farms, most of which are family-owned and operated, confront considerable challenges due to current trends, such as increased movement into cities, an aging population, farm consolidation, and changing weather patterns.
Explanation:
hopes this helps D:
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how do greenhouse effect allow for there to be life on earth? Explain
Answer:
A greenhouse effect is when a planets atmosphere gets thicker and warms
Explanation:
As a planet with water's parent star gets brighter every million years, The amount of evaporation increases. these are called greenhouse gasses. greenhouse gasses include water vapor and Carbon. This is why Venus is a burning hell. it was once like earth, but the sun kept getting brighter and brighter, causing clouds to form all over the rock, trapping in more heat, and making it far to hot for even metal. One day this will happen to earth, as well. this is why we have global warming. It can be caused by Co2 from earth's inhabitants and water vapor from it's vast oceans.
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What happens to the velocity of a river when it enters another body of
water?
The velocity of a river decreases when it enters another body of water.
A river's velocity abruptly drops as it reaches a lake or ocean, for example, and the stream deposits its silt in a deposit known as a delta.
How does velocity change in a river?The Bradshaw Model predicts that a river's mean velocity, which is expressed in meters per second, will constantly rise as it travels farther along its course. This is due to the fact that as a river flows downstream, it tends to get larger, deeper, and have a higher discharge.What affects the velocity of a river?The channel's form, the slope the river travels down, the volume of water in the river, and many other factors affect a river's velocity.
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Genes contain specific instructions for how to make(1 point)
carbon.
nucleotides.
gametes.
proteins.
Epigenetic changes are generally(1 point)
not heritable changes in gene structure of a population.
not heritable genetic changes that are specific to an individual.
heritable genetic changes that are due to environmental factors.
heritable changes in gene frequency of a population.
Meiosis produces(1 point)
hydrogen molecules.
skin cells.
DNA molecules.
gamete cells.
Which environmental factor will most likely increase the possibility of mutations in the Escherichia coli in the human body?(1 point)
eating dessert daily
a very stressful experience
drinking bottled water regularly
exposure to extreme heat
Changes to body cells affect(1 point)
gene activity.
cell division.
individuals.
offspring.
Answer:
Explanation:
Genes contain specific instructions for how to make proteins within the body.
Epigenetic changes are generally heritable genetic changes that are due to environmental factors, which work by turning genes that already exist in the body 'on' or 'off' depending on these factors.
Meiosis produces gamete cells. This is usually a total of 4 gamete cells which are all part of producing everything required in the reproductive process.
exposure to extreme heat is probably the most likely cause of mutation for E. Coli as it needs a steady 36–40°C for survival.
Changes to body cells affect cell division. This is because genetic mutations cause cells that are designed for normal cell growth to greatly increase which can throw the system off and cause many problems.
1. Proteins
2. Heritable genetic changes that are due to environmental factors
3. Gamete cells
4. Exposure to extreme heat
5. Individuals
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Is music stored on a smartphone an analog or digital signal?
When the sound wave is converted to a digital signal, it can be stored and transmitted by a computer.
What are Waves?A wave is defined as a disturbance in a medium that carries energy without net movement of particles which may take the form of elastic deformation, variation of pressure, electric or magnetic intensity, electric potential or temperature.
When a sound wave is converted into a digital signal that can be stored and transmitted by a computer. It allows us to download, play and stream music from our smartphones. Analog signals can be converted to digital signals where modern computers are controlled by digital, not analog signals.
Thus, when the sound wave is converted to a digital signal, it can be stored and transmitted by a computer.
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The temperature at which a solid turns to liquid? *
Answer:
a
Explanation:
Answer:
Melting point
Explanation:
It becomes a liquid when the solid reaches the temperature of its melting point.
A total solar eclipse is visible from
Answer:
the space
Explanation:
Answer:
First, an annular eclipse, commonly referred to as a "ring of fire," passed over Africa and Asia on June 21. Then on Dec. 14, a total solar eclipse will be visible from South America. It will be the first and only total solar eclipse of 2020.
Explanation:
Pls, help me I have a test today :(
Answer:
Frameshift mutation
Explanation:
i think that is the answer
PLZ HURRY 50 POINTS!!! What is the first step in producing a vaccine against an infectious disease?
A inactivating the disease agent
B testing for vaccine side effects
C finding and isolating the disease agent
D isolating antigens
Answer: finding and isolating the disease agent
Explanation: :)
Answer: C. finding and isolating the disease agent
Explanation:
How can someone inherit a trait from their parent while the sibling does not please help me!!!
Answer:
Genetics is the study of how heritable traits are transmitted from parents to offspring. Humans have long observed that traits tend to be similar in families. It wasn't until the mid-nineteenth century that larger implications of genetic inheritance began to be studied scientifically.
Explanation:
Before a seed can begin germination it MUST do the following
A) crack open the seed coat
B) absorbs nutrition from its surroundings
C) grow a root tip
D) grow a leaf sheath
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Answer: A
Explanation:1 this is 4th grade work
example of aquatic plants
Answer:
lotus
is an example of a aquatic plant
How many different phenotypes are their offspring expected to show?
Answer:
2
Explanation:
The dominant Round Yellow will be most numerous phenotype. A lesser number will be Round yy, the recessive not yellow.
the following are uses conversation gambits except
If the sperm cell of a fruit fly has 4 chromosomes, then the number of chromosomes in each body cell is:
Answer:8
Explanation:
Number of chromosomes in each body cell is 8.
What do you mean by chromosomes?A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones.
Moreover, chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA).
Therefore, passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
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Conduction is the transfer of heat between substances with different temperatures. Heat moves from the warmer to the cooler substance through direct contact.
Answer:
True.
Explanation:
Conduction is a heat transfer method. The heat passes by direct contact between two objects. The heat will go from the object with the higher temperature to the one with the lowest one. We call this temperature gradient. If we analyze the molecular aspect of conduction, we can see that the molecules with higher temperatures have more energy so, they move more. These molecules will collide with the molecules of the other object transferring their energy. As a result, heat passes from the hottest object to the cooler one till the two substances are at the same temperature, there is thermal equilibrium.
Answer: b. Hot spring
Explanation:
In poultry, rose comb is a dominant trait, single comb is recessive. A rose-combed male is mated with two rose-combed females. Female A produces '14 chicks, all rose-combed. Female B produces 9 chicks, 7 rose-combed and 2 single-combed. What are the genotypes of the three parent birds? (There needs to be two Punnet Squares btw)
help pls 3
Answer: The male is Rr. Female A is RR. Female B is Rr.
Explanation: Since single comb is recessive, both parents would have to have the gene. Good luck! :D (I only had markers near me, sorry it doesn't look that good :(
Question 5
What does the word subcellular in paragraph 3 mean?
More complex than a cell
Taken away from a cell
Hidden underneath a cell
Located within a cell
© 2021 Accelerate Learning, Inc. All rights
Answer:
no clue
Explanation:
Answer:
Located within a cell is a right answer. This is meaning of sub cellular.
Explanation:
3 organ systems that work together to make your body move (FREE BRAINLIEST)
Answer: Skin, Bones, and Muscles, hope this helps!
Explanation:
Which evidence of evolution allows scientists to know what the physical features of an organism were ?
The rough endoplasmic reticulum is a cell structure that consists of folded membranes that contain ribosomes . What is the advantage of the folded membranes ?
Answer:
The folds contain ribosomes attached to the membrane. The more the folds the more the surface area to which more ribosomes can attach. The ribosomes are organelles responsible for the manufacture of protein in cells. Thereafter, the proteins are properly folded by the mediation of chaperones in the lumen of the RER.
Explanation:
Give one example of how you classification is used at school
Answer:
classification like student and teacher?
Explanation:
Why did lighter skin evolve near the poles? And why did darker skin evolve at the equator?
Answer:
Explanation:
Human skin color reflects an evolutionary balancing act tens of thousands of years in the making. There’s a convincing explanation for why human skin tone varies as a global gradient, with the darkest populations around the equator and the lightest ones near the poles. Put simply, dark complexion is advantageous in sunnier places, whereas fair skin fairs better in regions with less sun.
I NEEEEED HELP ON THIS PLSSS
Answer:
2
Explanation:
2 2. 2 2 2 2 2 2 2 2 2 2 2. 22. 2 2 2 2 2 2 2 2.
Which of the following does not represent a condition required for natural
selection to occur?
A)People breeding cows to be larger and have specific coloration.
B)An insect has genetic mutations which allow it to survive being sprayed
with a certain chemical.
C)The carnivorous venus fly trap has adaptations that allow it to live
in areas lacking nutrients in the soil.
D)Bacteria reproduce by binary fissions so fast that populations can
double in every 4 - 20 minutes.
Answer:
A)
Explanation:
Because people breeding cows is not natural
A step that is not part of natural selection is people select which individuals breed and which ones do not.
What is Natural selection?Natural selection is a process in which favorable or unfavorable environmental conditions determine the evolution of species, producing differences in their genotype over a long period of time.
As its name indicates, it is a natural selection, in which no intervention by people is contemplated, so that people cannot determine which individuals breed.
Natural selection implies that the characteristics on which the environment influences are inheritable, that there is genetic variability in the population and that the variability of these characteristics implies the ease of reproduction and survival capacity.
The other options do form part of natural selection, since they are based on the three premises of this process are the Inheritable characteristics., Genetic variability. The variability of characteristics influences reproduction and survival.
Therefore, A step that is not part of natural selection is people select which individuals breed and which ones do not.
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Describe some changes that occurred during the process of human evolution by comparing the first primates to the first hominids?
Answer:Rather, it could look more like one branch or the other branch, or something else entirely. Did the common ancestor of humans and chimps conform to the ape-man myth and live in the trees, swinging from vines? To answer this, we have to focus not only on anatomy but on behavior, and we have to do it in a phylogenetic context.
5. What would be the consequence of an ecosystem that had no nitrogen-fixing bacteria? (1 point) O Nitrogen from decomposing animals would never be returned to the soil. O Decomposers would not be able to break down the nitrogen present in plants they feed on. O Plants would have to rely on biologically available nitrogen present in the soil. O Consumers would not survive since they would have no way to obtain the nitrogen they need.
Answer:
Nitrogen from decomposing animals would never be returned to the soil.
in the process of meiosis the new cells have half the dna of the original cell why is this important to life HELP PLEASE THIS IS DUE IN 1 MINUTE
Answer:
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. During meiosis one cell divides twice to form four daughter cells.
This is because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes to make a human child.