Explanation:
Electronic microscope helps us to see each every part of the cell. So, it is considered important
Answer:
A cell is the smallest unit of life. Most cells are so small that they cannot be viewed with the naked eye. Therefore, scientists must use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than light microscopes.
Explanation:
hope it's help you
Please help me with this biology question...........
Chloroplasts are present in some plant cells only Give an example of plant cells that do not contain chloroplasts and explain why
Answer:
Chloroplast is specific to plant cell because plants are the autotrophs which can prepare their food by conversion of light energy to chemical energy. It is the vital photosynthetic pigment in leaves as it involves the conversion of light energy into chemical energy.
hope it is helpful.
Answer:
Please let me no if you still need help on this
Explanation:
I will glady help!
What happens to the effenciency of the exchange of oxygen in the human body at a high altitude
Answer:
The effiency decreases at higher altitudes
Explanation:
The higher up a person is on a mountain, the thinner the air is due to the lack of plants that can grow. An example of this is Mount Everest. At a certian point on the mountain, called the "Death Zone", the air is too thin to supply enough oxygen to the human body to survive. That's why they bring oxygen tanks with them on their adventures.
DNA sequences can act as "tape measures of evolution." Some highly-conserved regions of the human genome (similar to comparable regions in other species) don't code for proteins. Why?
1. Such regions coded for proteins in genomes of distant human ancestors, but over time they became noncoding; however, conserving their sequence remained unchanged.
2. Such regions play a significant role in gene regulation. That is why they remain conservative under the influence of natural selection.
3. Such regions are the sites of DNA recombination. They should remain conservative to provide an accurate recombination process during cell division.
4. Such regions remain conservative because the mutation rate differs along the genome. In other words, such regions remain conservative accidentally.
Answer:
2. Such regions play a significant role in gene regulation. That is why they remain conservative under the influence of natural selection.
Explanation:
Within the genome there are many non-coding regions that control the expression of master developmental genes such as, for example, Hox major transcription factors (TFs) in animals and MADS-box TFs in plants. These gene regulatory regions (e.g., promoters and enhancers) are generally evolutionarily conserved within certain taxonomic groups. In consequence, such non-coding regions are well known to be conserved and interact in a sequence-specific manner with major transcription factors in order to regulate developmental pathways.
Based on your knowledge of the relationship between CO2 and photosynthesis explain why CO2 cycles throughout the year.
Answer:
we breath in Oxygen and breath out CO2 and CO2 destroys the atmosphere
which part of the eye is sensitive to light?
Which part of the eye is sensitive to light?
Retinasorry kalo salah
To ligth The sensitive of teh eye
syngamy and triple fusion difference
mark me as brainlest
Answer:
Üçlü füzyonda, üçüncü bir sperm çekirdeği, embriyo kesesindeki merkezi hücre ile birleşerek endospermi üretir. Eşleşme ve üçlü füzyon arasındaki temel fark, eşleşmenin bir tür üretici döllenme olduğu, üçlü birleşme ise bir tür bitkisel döllenmedir .İyi Çalışmalar..
Answer:
Syngamy: Syngamy refers to the fusion of gametes in fertilization.
Triple Fusion: Triple fusion refers to the fusion of a sperm cell with the two polar nuclei during the double fertilization in angiosperms.
Type of Fusion
Syngamy: In syngamy, a male gamete fuses with a female gamete.
Triple Fusion: In triple fusion, a male gamete fuses with the central cell.
Result
Syngamy: Syngamy produces the zygote that develops into the embryo.
Triple fusion: Triple fusion produces the endosperm cell that develops into the endosperm.
Ploidy
PloidySyngamy: The result of the syngamy is diploid.
Triple Fusion: The result of the triple fusion is triploid.
Type of Gametes
Type of GametesSyngamy: Both male and female gametes are involved in the syngamy.
Triple Fusion: Only male gametes are involved in the triple fusion.
Type of Fertilization
Syngamy: Syngamy is a generative fertilization.
Triple Fusion: Triple fusion is a vegetative fertilization.
Occurrence
OccurrenceSyngamy: Syngamy occurs in animals and plants.
Triple Fusion: Triple fusion occurs in angiosperms.
Conclusion
Syngamy and triple fusion are two types of events in the sexual reproduction of plants. Syngamy is the fusion of male and female gamete, producing the zygote. Triple fusion is the fusion of a male gamete with the central cell of the female gametophyte, producing the endosperm. The main difference between syngamy and triple fusion is the type of fusion of cells in each event.
I hope it's helpful!
Tides are caused by gravity of the__
1. Earth and sun
2.earth and moon
3.moon and stars
4.sun and moon
Answer:
the answer to your question is number 2
Explain why society has been developing different renewable resources in favor of
nonrenewable resources in the past few decades.
Answer: Society has been developing different renewable resources in favor of nonrenewable sources in the past decades because natural gas and oil has been used to much that we are running out of nonrenewable sources. So society has been trying to use solar panels, wind panels, and water.
Explanation:
1. What do DNA Replication and Cell Division have in common?
2. Define Cell Differentiation in your own words.
3. Why are stem cells consjdered unique?
Answer:
1: During every cell division, a cell must duplicate its chromosomal DNA through a process called DNA replication. The duplicated DNA is then segregated into two "daughter" cells that inherit the same genetic information. This process is called chromosome segregation.
2: Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types.
3: Stem cells have unique abilities to self-renew and to recreate functional tissues. Stem cells have the ability to self-renew. Unlike muscle cells, blood cells, or nerve cells—which do not normally replicate— stem cells may replicate many times.
Explanation:
Goooooooooooooooooogle <3
The picture shows an organ system in the human body
Brain
Nerve
-Spinal
cord
w
do these organs do in the human body?
O A. They filter pathogens and dead cells out of lymph before it returns
to the blood.
B. They monitor and react to changes in the body and its
environment
C. They release hormones that control the activities of cells and
organs
O D. They identify and destroy things that are foreign or harmful to the
body
Answer:
B
Explanation:
because the nerval system is for sending and capturing signals from the brain to monitor if you had a broken bone so your brain and nerves say you are feeling pain. on rare occasions the nerves will totally skip the pain part and send different information to your brain, like if you broke your finger, it would skip the pain and all you would see is a weird finger.
Can someone help me fill in the blanks. Thank you.
Answer:
1) fungi
2) tubers
3)bulbs
4) unequally
5) cuttings
6)equally
7)root
8) mitosis
this my knowledge on this questions...hope i helped!
A student flips a light switch but the light does not turn on. Based on this
information, which inference is NOT valid? *
The light switch is broken
The elecrical wire is copper
The electrical connection is broken
The light bulb is burned out
Answer: the electrical wire is copper
Explanation:
Describe how proteins form (polypeptide)
Answer: Atoms were created after the Big Bang 13.7 billion years ago. As the hot, dense new universe cooled, conditions became suitable for quarks and electrons to form. Quarks came together to form protons and neutrons, and these particles combined into nuclei.
Answer:
Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.
When there is a constant unbalanced force applied in the opposite direction as the motion, speed will ___________________ and acceleration will ________________________.
Answer:
When there is a constant unbalanced force applied in the opposite direction as the motion, speed will decrease and acceleration will increase.
Explanation:
An opposing force should slow something down, decreasing the speed, and acceleration is just change in speed or direction.
Have a great day!
How are the chromosomes sorted during meiosis
Answer:
During meiosis l, homologous chromosomes pair up with each other.When the homologs are divided into daughter cells,the chromosomes are sorted randomly into daughter cells.if alleles of different chromosomes,then they assort indepently
what is the nature of cell-walls in diatoms
Answer:
The cell walls of diatoms are made of silica. Their cell wall construction is known as frustule. It consists of two thin overlapping shells that fit into each other such as a soap box. When the diatoms die, the silica in their cell walls gets deposited in the form of diatomaceous earth.
Anyone know this question?
Answer:
Its below in the explanation
Explanation:
the
AA is Hh
Bb is Hh
Cc-Hh
Dd-Hh
Ee-Hh
ff-HH
GG-HH
HH-HH
ii-Hh
Jj-Hh
kk-HH
Ll-Hh
Mm-Hh
nn-HH
oo-HH
Pp- Hh
Mitosis a single cell divides to produce two daughter cells what must happen in the original sound of the daughter cells has a complete set of chromosomes
Answer:
Explanation:
In mitosis, when a single cell divide into two daughter cell and each daughter cells have a copy of chromosomes, there must first be the copying of the chromosomes from the parent cell and after that the chromosomes are separated or there is separation of chromosomes into each of the daughter cells.
PLEASE HELP IM DOING A TEST RN!!
Which of the following describes how the pollen must travel in order for pollination to occur?
Question 18 options:
. from the stigma to the anther
from an anther to the style
from an anther to the stigma
from the stigma to the pollen tube
Answer:
from an anther to the stigma
Explanation:
Answer:
Anther to stigma!
The anther is where the pollen is granulated, and the stigma is the part where they reproduce.
How do individual’s affect environmental systems?
Answer:
Humans impact the physical environment in many ways like overpopulation
Explanation: pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. and many more ways.
Answer:
Humans impact the physical environment in many ways like overpopulation
Explanation:
pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. and many more ways.
Germs that cause diseases?
Answer:
There are two main types of germs which can cause disease in humans and animals. These are bacteria and viruses. Bacteria are larger than viruses.
Explanation:
SOMEONE PLEASE HELP ME WITH THIS I REALLY REALLY REALLYYY NEED IT ILL GIVE BRAINLY IF U GET IT RIGHT
Answer:
i like trains and turtles
Explanation:
Kerstin is getting ready to graduate high school. She wants to become a cardiac perfusionist. Which best describes the path she should take to her career?
Answer:
four-year degree , master’s degree , certification exam from ABCP
Explanation:
Answer:
She should do a four-year degree , master’s degree , certification exam from ABCP
Explanation:
Which is the primary source of stem thickening in plants? xylem vascular cambium internal phloem
Which is the last link in the wetlands food chain?
A. Consumers
B. Predators
C. Decomposers
D. Producers
Answer:
BRO THE CORRECT ANSWER IS .... C) DECOMPOSTER
Explanation:
I KNOW IT IS SAME BUT STILL YOU CAN MARK ME AS BRAINIEST
A football is kicked by a player. The ball travels 50 m, to the west when it is caught by another player and that player travels 50 m, south. Create a vector diagram that shows both displacement vectors and the resultant displacement vector of the football.Use the scale of 1 cm of the graph paper = 10 m of motion.
Answer:
The football will hit the ground 2.11 seconds later.
Explanation:y = y0 + v0yt + ½ayt
2
0 = v0sin t + ½ayt
2
0 = t(v0sin + ½ayt)
t = 0 or v0sin + ½ayt = 0
½ayt = – v0sin
=
−20sin
=
−2(18.0)sin(35.0°)
−9.8
Government agencies regulate most aspects of agricultural safety.
True
False
Answer:
False
Explanation:
SOMEONE PLEASE HELP ME WITH THIS I REALLY NEED HELP I WILL GIVE BRAINLY IF U GET IT RIGHT
I would say C is the answer
As a cell grows in size, transporting the materials in and out of the cell becomes more difficult. Which process would help a cell to efficiently transport more materials into the cell as it grows?
Grupo de escolhas da pergunta
A) The cell develops a thinner cell membrane.
B) The cell undergoes a mutation.
C) The cell stores more materials in its vacuoles.
D) The cell divides into two cells creating more space for materials.
ASAP
Answer: D
Explanation: I answered the question
When the process would helps a cell to efficiently transport more materials into the cell as it grows: The cell divides into two cells creating more space for materials.
How does a Cell Grow?
When a Cell growth is not to be confused with cell division or the cell cycle, which are distinct processes but they can occur alongside cell growth during the process of cell proliferation,
whereas a cell, it is known as the "mother cell", Also, when grows and divides to produce two " daughter cells ".
Therefore, The correct option is 'D'. The cell divides into two cells creating more space for materials.
Find more information about Cell Grow here:
https://brainly.com/question/26426027
A cell containing 20 chromosomes undergoes mitosis, each daughter cell will have 20 chromosomes
a.True
b.False
Answer:
the answer is true because a cell containing 20 chromosomes undergoes mitosis, each daughter cell will have 20 chromosomes