will give brainliest to correct answer
Answer:
(i)
x= nucleus
y= chloroplasts
z= vacuole
(ii)
1) an animal cell does not contain a vacuole but a plant cell does
2) a plant cell contains chloroplasts but an animal cell does not
Why does the line you're in always move the slowest?
Answer:
It is actually your thought
Explanation:
This is because you might be in an hurry so you think the line is moving very slow whereas it is not.
when someone jumpstarts a car, what do you think happens to the stored energy in the working battery?
Which organelles are found in an animal cell?
Check all that apply.
endoplasmic reticulum
centrioles
cell wall
vacuoles
lysosomes
mitochondria
chloroplasts
cell membrane
Answer:
1. Endoplasmic reticulum
2. Centrioles
3. Mitochondria
Answer:
A, B, D, E, F, H
Explanation:
Edge… you’re welcome
Definition of
(a)
Diploid.
(b)
Homologous.
Answer:
Diploid is a cell or organism that has paired chromosomes, one from each parent.
homologous is having the same relative position, value, or structure
Explanation:
What number is ten times greater than 40?
Answer:
The answer would be 400
Explanation:
Like you said, "what is ten times greater than 40" that would 400, because 10 x 40 = 400
Answer:
Ten times meaning you multiply 40 by 10.
40 × 10 = x
400 = x
A number 400 is ten times greater than 40.
Human dna polymerase cannot be used in pcr. Why do you think this is the case?.
Human DNA polymerase cannot be used in polymerase chain reaction because it disables at a high temperature.
What is PCR?Polymerase chain reaction (PCR) is a biological technique in molecular biology used for creating multiple copies of DNA from a sample.
The principle behind PCR involves the use of high temperature. An enzyme called polymerase is used to catalyze the formation of polymers of DNA using an existing strand of DNA as a template.
However, TAQ polymerase is used because it tends to be stable at high temperatures unlike human DNA polymerase that disables when it reaches a high temperature.
Therefore, human DNA polymerase cannot be used in polymerase chain reaction because it disables at a high temperature.
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The first part of the lab procedure focused on temperature. There were several factors, which are listed below. Label each factor as “variable” or “constant.”
Amount of water:
Reaction rate:
Temperature:
Initial amount of tablet:
Particle size:
Answer:
Amount of water is constant
Reaction Rate is variable
Temperature is variable
Initial amount of tablet is constant
Particle size is constant
Explanation:
The first part of the lab procedure focused on temperature. There were several factors, and we are classifying each of the factors as variable or constant.
What are variable and constant parameters ?The variable parameters are those quantities that are not fixed in the experiment but are constantly changing in the course of the experiment with time.
The constant parameters are those quantities or variables that are fixed and posses a same value in the course of the experiment with the change in time.
Labelling the factors given as variable or constant -Amount of water is constant.
Reaction Rate is variable.
Temperature is variable.
Initial amount of tablet is constant.
Particle size is constant.
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You see a blood vessel from a creature. You have no idea what creature and you have no
idea where it came from. You do notice, however, that the blood vessel wall is very thin. What kind of blood vessel is this?
Answer:
I think Capillary would be this correct answer
Hope this helps!
Pepsin is a digestive enzyme that ________. is denatured and rendered inactive in solutions with low pH is manufactured by the pancreas begins the digestion of proteins in the stomach helps stabilize fat-water emulsions splits maltose into monosaccharides
Answer:
Pepsin is a digestive enzyme that serves to digest proteins found in indigested food.
Explanation:
Pepsin is the principal enzyme involved in proteins. It breaks down proteins in to smaller peptides and amino acids that can be easily absorbed in the smaller intestine.
In the replication process of viruses, viruses use ______________ to attach to their host cells at molecules on the cell called viral receptors.
Answer:
Receptors
Explanation:
In the replication process of viruses, viruses use glycoprotein to attach to their host cells at molecules on the cell called viral receptors
What is replication of viruses?Replication of viruses refer to the process in which viruses multiply or replicate in a host cell thereby causing infection.
Therefore, In the replication process of viruses, viruses use glycoprotein to attach to their host cells at molecules on the cell called viral receptors.
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Just look at the picture :)
Answer:
The answer is d)
Explanation:
The cell will shrink because it is in a hypertonic solution.
This is because, in osmosis, water moves from a higher concentration to a lower concentration of water.
In this question, more water is present inside the cell as the percentage of NaCl (salt) is 0.9%. There is less water outside the cell as there is 1% of NaCl... So..the water will move outside the cell and the cell will shrink.
Also, the type of solution given is called a hypertonic solution.
Hypertonic solution: If the medium has a lower concentration of water than the cell, it is a hypertonic solution.
Hope it helps.
The kidneys filter approximately 180 L of plasma per day, but only excrete about 1.5 L of urine in that time, regardless of most changes in mean arterial pressure. This is because of __________.
Answer:
sympathetic innervation to the afferent and efferent arterioles, tubular re absorption, and myogenic regulation
Explanation:
rate if this helps!
Which of the following are ways that humans can pollute water?
there are four correct answers
A
Dumping oil down a drain
B
Using a water filter
C
Drinking out of the tap
D
A company dumping waste into a creek
E
Farmers using pesticides that then go into a river
F
Leaving garbage on the beach so that it gets pulled into the ocean
The pyramid above illustrates the trophic levels in a typical forest or swamp ecosystem. In the soil, the organisms play a specialized role in the ecosystem. Select all of the statements that accurately describe the role of the soil organisms
Consumers of wetlands can include fish, birds, amphibians, mammals, freshwater and/or marine invertebrates (shrimp, clams), as well as fish. It is bacteria and fungi that decompose dead creatures in wetlands.
What trophic levels in a typical forest or swamp ecosystem?A form of wetland ecosystem where trees dominate the plant life and mineral soils have limited drainage. The latter distinguishes a swamp from a marsh, where grasses make up the majority of the plant life. Swamps can be found all over the planet.
Soil texture, water quality, and topography are examples of abiotic factors that are impacted by hydrology in a wetland, whereas plant and animal species, diversity, and abundance are examples of biotic elements that are influenced by hydrology in a wetland.
Primary consumers like mice devour those. Raccoons and other secondary consumers, like them, eat the mice. Then, apex predators like alligators devour raccoons.
Therefore, primary producers in the swamp, such as trees and grasses, are the first links in the food chain.
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Which statement is true regarding the Yellowstone National Park?
OPTIONS
There are diverse habitats, from open meadows of wildflowers to thick pine forests.
The types of undergrowth in the forests are uniform and do not change.
Each spring, fires will destroy the forests and reduce them to white ash.
Forestry officials clear the forests regularly to provide new grazing ground for large herbivores.
d I think so
sorry if I'm wrong
what is abc control disease method
Answer:
Active Bacterial Core surveillance (ABCs) is an active laboratory- and population-based surveillance system for invasive bacterial pathogens of public health importance.
Explanation:
elect all the correct answers. Which of these statements about fungi are true? 1.Some fungi can directly infect human tissue and cause disease. 2.All fungal cells are eukaryotic. 3.Some fungi can make food using photosynthesis. 4.All types of fungi are harmful to human populations.
Answer:
1 and 2
Explanation:
1- some fungi are harmful to us like Aspergillosis, however not all of them are harmful to us.
2- all fungi are eukaryotes because they have a well organized cell.
3- fungi do not contain green pigment so therefore cannot do photosynthesis. They instead use digestive enzymes to digest the food externally.
4- not all fungi are harmful to humans or animals, for example yeast is a fungus but it is used a lot in cooking/baking.
Hope this helps good luck!
match the following terms with their corresponding definitions
Match the following the answer is as follow:
A-4
B-7
C-6
D-2
E-8
F-5
G-3
H-1
I-9
What is adaptation and examples?
The adaptation, they often mean a characters helps an animal or plant survive. An example is the adaptation of horses' teeth to grinding grass.
Silage is their general food; it have the teeth down, but horses' teeth restart to grow during life.
Thus, these are the anwer.
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Which energy transformation occurs first in a coal-burning power plant?.
When coal is burned, chemical potential energy is transformed into thermal energy, light energy, and sound energy. Therefore only the thermal energy is used for their electricity production.
Hope this helps :))
how does a snowy owl find its way back
Answer:
Dense camouflaged feathers (anatomical) - Snowy owls have white camouflaged feathers to help them blend into the white landscapes of the arctic. Their feathers extend thickly over all parts of the body unlike other owls which often have less on the face and legs in particular, the toe feathers of the snowy owl are more than twice as long as the next longest on an owl.
Explanation:
What are cyclins, kinases, and telomeres? What do they do, and what are the differences between them? (Please explain, I’ll give brainliest!)
Answer:
Cyclins are the regulatory subunits of holoenzyme CDK complexes that control progression through cell-cycle checkpoints by phosphorylating and inactivating target substrates. Cyclins drive the events of the cell cycle by partnering with a family of enzymes called the cyclin-dependent kinases (Cdks).
Kinases are a type of enzyme (a protein that speeds up chemical reactions in the body) that adds chemicals called phosphates to other molecules, such as sugars or proteins. This may cause other molecules in the cell to become either active or inactive. Kinases are a part of many cell processes.
Telomeres are DNA-protein structures that form protective caps at the end of eukaryotic chromosomes. They constitute the safeguards of chromosome degradation and are responsible for maintaining genomic integrity.
The key difference between cyclins and kinases is that cyclins are regulatory proteins that have no enzymatic function in the cell cycle, while kinases are catalytic proteins that have an enzymatic function in the cell cycle.
Hope this helps!! Im taking bio right now and its very hard
Since cuts from restriction enzymes occur in both dna backbones at different locations, the resulting dna fragments have unpaired regions called __.
Answer: Since cuts from restriction enzymes occur in both dna backbones at different locations, the resulting dna fragments have unpaired regions called overhangs
The cuts caused by restriction enzymes occur in different places in both DNA backbones; the resulting DNA fragments have unpaired regions known as overhangs.
What is recombinant DNA technology?In this technology, the modification of DNA is done by combining the original DNA with the desired gene. In gene editing, recombinant DNA technology is used. The most suitable organisms for this purpose are bacteria, yeasts, etc. They grow rapidly in a short period of time. As a result, they can provide desired products in a short period of time.
The desired gene is extracted and introduced into the bacteria using recombinant DNA technology. The DNA of bacteria is cut by restriction endonucleases. As a result of cutting, overhangs are produced.
The desired gene is taken and introduced to the bacteria's DNA. The bacteria transcribe and translate the target gene. An example is humulin. This process produces human insulin.
Hence, DNA fragments have unpaired regions called "overhangs."
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Which statement about somatic mutations is true?
O A. They exist in all the cells of the body.
O B.
They are acquired through exposure to mutagens.
• C.
They are inherited via sperm and egg cells.
• D.
They are passed on to offspring.
Answer:
c. they are inherited via sperm and egg cell
What symbol is used to designate an absolute cell reference?.
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Hello there
Which of the following classifications indicates the closest evolutionary relationship between Organisms A and B?
Organism A and Organism B are in the same genus.
Organism A and Organism B are in the same phylum.
Organism A and Organism B are in different phyla.
Organism A and Organism B are in the same Kingdom
Answer:
answer d
Explanation:
During development, an absence of ______ protein production causes the mesonephric ducts to degenerate.
An absence of Androgen, Protein production causes the mesonephric ducts to degenerate.
AdrogenAdrogens are x hormones found in males that gives rise to human characteristics present only in male species. Adrogen leads to the growh of mesonepheric ducts while the absence of Adrogen protein production will lead to the degeneration of the mesonephric ducts.
Hence we can conclude that An absence of Androgen, Protein production causes the mesonephric ducts to degenerate.
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What is chromatin?
A. a structure that allows materials in and out of the nucleus
B. a thread-like genetic material formed from DNA and histones
C. a defensive layer that forms when the cell is under attack
D. a structure that protects the nucleus from extreme temperatures
Answer:
B. a thread-like genetic material formed from DNA and histones
The sustainable use of rainforest resources is exemplified by _______. a. lumber harvesting b. ranching c. harvesting nuts d. none of the above please select the best answer from the choices provided a b c d
Answer:
C
Explanation:
The sustainable use of rainforest resources is exemplified by
harvesting nuts.
Sustainable use of rainforest resources by harvesting nuts, provide a source for human resource, hence option c is correct.
What is the sustainable use of rainforest resources?To minimize deforestation, tropical rainforests can be maintained in the following ways: logging and replanting - selective logging of older trees guarantee that the rainforest canopy is protected.
Because the younger trees have more space and sunshine to develop, the forest can recover. The environment supports fruits such as nuts, papayas, mangos, cacao, and coffee beans.
Rainforests also contain several therapeutic items. In the United States according to the National Cancer Institute, 70% of plants beneficial in cancer therapy are only found in rainforests.
Therefore harvesting nuts for human resources is sustainable use of rainforest resources, hence option c is correct.
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why is Biology so hard?
Answer:
Imagine studying a cell. That cell has billions of things you can learn about. Now imagine 37.2 trillion cells each a little bit different but still similar. Now imagine that multiplied by all the different people there are on earth. Now then include all the other types of living animals.
That's biology