Answer:
A. DNA
Explanation: can i have brainly :))
HELP PLEASE ASAP.
Why do stems have bark? What does the phloem do?
Answer:In old stems the epidermal layer, cortex, and primary phloem become separated from the inner tissues by thicker formations of cork. Due to the thickening cork layer these cells die because they do not receive water and nutrients. This dead layer is the rough corky bark that forms around tree trunks and other stems.
Explanation: wikipedia.
Which biogeochemical cycle includes the exoskeleton and shells of marine organisms as a reservoir?
A.
carbon
B.
nitrogen
C.
sulfur
D.
oxygen
(its not oxygen)
Answer:
I think it is oxygen
Hope this helped
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Which of the following is not one of the principles of natural selection?
O variation
O more offspring than can survive
O finite resources
O infinite resources
Answer:
Infinite resources
Explanation:
There will not always be shelter, food, water, etc...
Describe the relationship
between chlorophyll and the
color of plants.
Answer:
Plants absorb both red and purple light waves, however because purple wavelengths are shorter, they contain more energy. The green pigment involved in photosynthesis is chlorophyll . Chlorophyll is green in appearance because it absorbs red and blue light, making these colours unable to be seen.
Done!!!
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:
the answer is C
Explanation:
another word for stamen is anther and i took the K12 test
hope you do great
I need to answer ASAP Pls
Answer:
separate during meiosis l
Explanation:
yan Napo Ang answer Sana makatutulong
match these to the correct definitions pls
Answer: one set - sex cells / two sets - somatic
Explanation:
praw a diagram of the different type of
Soil horizon
Answer:
diagram
hope this pic helps you
Answer:
Hope it will help you be happy ^_^
Which owl was most fit?
O Owl 4 laid 4 eggs, of which all 4 hatched and all 4 young successfully left the nest.
Owl 3 laid 12 eggs, of which 10 hatched and were all eaten by a squirrel.
O Owl 1 laid 8 eggs, of which 6 hatched and 5 young successfully left the nest.
O Owl 2 laid 9 eggs, of which 8 hatched and 3 young successfully left the nest.
Answer:
Owl 1 laid 8 eggs, of which 6 hatched and 5 young successfully left the nest.
Explanation:
All organs in the human body perform important functions. Which organ controls all
of the other organs and is called the control center of the body?
stomach
B
small intestine
С
brain
D
liver
Answer:
c
Explanation:
Answer:
Well I thought it was the nervous system but that is connected/ made up of the brain so I would go for C, Brain
which body structure have walls one cell thick
Answer:
CapillariesExplanation:
Capillaries. Capillaries connect the smallest branches of arteries and veins. The capillaries are where molecules are exchanged between the blood and the body's cells. The walls of capillaries are just one cell thick.The only body structure that has walls one cell thick is capillaries.
What are capillaries?Capillaries, the blood vessels in our bodies are so minuscule that red blood cells can only travel through them in a line. Comprised of a layer of cells capillaries facilitate the exchange of crucial substances like oxygen carbon dioxide, nutrients and waste materials, between the bloodstream and the surrounding tissues.
With the above details we can conclude that the body structure that has walls one cell thick is capillaries.
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What were the gases Miller and Urey
used to recreate the early
atmosphere? Choose all that apply.
methane
oxygen
hydrogen
e
ammonia
Which of the following is true based on the data?
Choose 1 answer:
Wheres the data
Explanation:
Answer:
Uh sir- i dont see anything, or a picture
Explanation:
Please update a picture so i know what to awnser!
4. Is there a relationship between the number of black boxes and any of the water pumps. Be specific and detailed in your answer. .
Answer: Cholerae is fecal contamination of water, meaning people can only get this by using or drinking the contaminated water. If a water pump has the contaminated water, boxes near that water pump will seem higher than areas with clean water.
Explanation:
All of the following are reasons it might be beneficial for prokaryotes to take up foreign DNA EXCEPT that Question 77 options: a) DNA could be used for food by bacteria. b) the uptake of foreign DNA would result in potentially beneficial recombinants. c) the uptake of foreign DNA might allow a cell to repair damaged chromosomes. d) the uptake of foreign DNA could allow completely new genes with new functions to enter the recipient cell. e) the uptake of foreign DNA could result in the breakage of the plasma membrane of the recipient cell.
Answer:
dna could be used for food by bacteria
Explanation:
not a beneficial reason
All of the following reasons are beneficial for prokaryotes to take up foreign DNA except the use of DNA as food by bacteria. Thus, the correct option is A.
What is DNA uptake?DNA uptake is defined as the conversion of exogenous, DNase-sensitive DNA into a DNase-protected state inside a bacteria. In gram-negative bacteria, this DNA uptake can be achieved by crossing the outer membrane. By contrast, in gram-positive bacteria, DNA uptake is similar to gram-negative bacteria with passage across the cytoplasmic membrane.
The uptake of DNA in bacteria is beneficial as it helps in the production of recombinants that can be used for various purposes. The DNA uptake can be used for the repairing of damaged DNA and chromosomes in patients of genetic disorders.
New genes with different functions can be introduced in organisms like bacteria.
Therefore, the correct option is A.
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what molecules main job is to carry the genetic code?
1. DNA
2. Protein
3. tRNA
4. rRNA
What unit do Scientists use to measure force?
A Newton
B Gram
C Meters
D Seconds
Answer:
They use Newton to measure force
Explanation:
5. A logging company cut down all the large spruce trees in an area of forest. After the area was cleared, spruce seedlings began to sprout. Rabbits, birds, and deer returned to the area.
The missing part of the question is -
" Is this Primary or Secondary Succession?"
Answer:
The correct answer is - secondary succession.
Explanation:
Recolonization of the plant and animals to habitat after a major disturbance such as flood, lava eruption, wildfire, or human disturbance is characterized as secondary succession.
In this particular case, there is secondary succession occurs, there is man-made disturbance tajes place as logging company clear the spruce trees from a habitat, and after clearing the land the spruce seedlings began to sprout, birds, rabbits recolonize to the area.
Which of the following is/are among the functions of the eukaryotic cytoskeleton? Select all that apply.
Answer:
Explanation:
I have no ideaaa. This stuff wack.
The cytoskeleton is made up of a dynamic connection of protein filaments found in all the cells. Under the eukaryotic, it is made by the microfilaments, microtubes. Giving shape and structure to the system.
The eukaryotic cytoskeleton consists of three main types of firmaments. Such as those which are connected by the neurons are know as neurofilaments. These are a distinct types of subnet that have their own character, shape, and size. Being composed of lots of proteins also helps in the division of cells.Hence the option A and E are correct. that it gives cells shape and structure and helps in cell division.
brainly.com/question/21276757.
which of the following occurs when a gene is expressed
Explain how specific membrane-bound organelles of the keratinocytes are used to produce, transport, and modify aquaporin polypeptides from mRNA.
Answer:
Epidermis.
It is composed of keratinized, stratified squamous epithelium and is made up of 4 layers of epithelial cells depending on its location in the body. From deeper to superficial these layers are stratum Basale, stratum spinosum, stratum granulosum, and stratum corneum. The cells in all the layers except for stratum besele are called keratinocytes which is a cell that manufactures and stores the protein keratin.
Stratum Basale.
It is a cuboid-shaped stem cell that is a precursor of the keratinocytes of the epidermis. Two other cell types found in this basal cell are Merkel cells which function as a receptor and are responsible for stimulating sensory nerves that the brain perceives as touch. The second is melanocyte that produces melanin pigment which gives the skin its color.
Stratum spinosum.
It is spiny in appearance due to the protruding cell processes that join the cells via a structure called desmosome. The desmosome cell interlock with each other to strengthen the bond between the cell. Keratinocytes in the stratum spinosum stats synthesizing keratin and release water-repelling glycolipid that helps to prevent water losses from the body.
Stratum granulosum.
They are grainy in appearance due to further change in keratinocytes as they are pushes from the stratum spinosum. The cells become flat as their membrane thickens to allow the production of protein keratin which accolades as lamellar granules within the cells.
Stratum Lucidum.
It is a smooth and translucent layer of the epidermis situated above the stratum granulosum. Keratinocytes containing these cells are dead and flat. Stratum lucidum cells are packs with eleiden derived from keratohyalin which give these cells their transparency and provide a barrier to water.
Stratum corneum.
This is the most superficial layer in the epidermis and it prevents penetration of microbes and dehydration of underlying tissues.
Dermis.-This is the inner layer of the skin and has the following functions.
Reticular layer
Just below the papillary layer, we have a much thicker layer called the reticular layer composing of dense connective tissue. It contains elastin fibers providing elasticity to the skin enabling movement.
Hypodermis
Explanation:
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Order the carbohydrates from smallest to largest: Starch Glucose Sucrose
Answer:
glucose, sucrose, starch
Which of the following contains a single type of element?
gold
carrot
table salt
vegetable soup
Answer:
Gold
Explanation:
Gold is a singular element according to the periodic table. (Labeled Au), and it does not result from chemical bonds or multiple elements, like all other items listed here do.
I really hope this was helpful to you! Thanks and have a nice day!
true or false: The main disadvantage of sexual reproduction is that it results in genetic variation among offspring.
Answer:
This statement is false.
Explanation:
it is not a disadvantage rather it is an advantage that it results in genetic variations among offspring.
Give ttwo pieces of information that scientists use to prepare evolutionary trees for living and extinct organisms
Two pieces of information that scientists use to prepare evolutionary trees for living and extinct organisms are the fossil evidence that is found on the earth and the DNA samples, as these two are helpful in the evolutionary tree representation.
What is the significance of the evolutionary tree?An evolutionary tree, or phylogenetic tree, is a diagrammatic representation that shows the relationships between different species or groups and is used to represent the evolutionary history and how organisms are related to one another through common ancestry. The evolutionary tree is important as it helps scientists understand the relationships between different species and how they have evolved over time to form new species.
Hence, two pieces of information that scientists use to prepare evolutionary trees for living and extinct organisms are the fossil evidence that is found on the earth and the DNA samples, as these two are helpful in the evolutionary tree representation.
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TRUE or FALSE? Respiration is the chemical reaction that living things carry out to release energy. Breathing is the movement of air in and out of the lungs
Answer:
True
Explanation:
Though consumed by millions of people, mushrooms are related to which infectious agent? A. bacteria B. fungi C. parasites D. viruses
B. fungi becaus thats just how it is
5) If a body cell contains 50 chromosomes, how many
will exist in its gametes?
Answer-25
Please answer this ASAP
B
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Describe the
functions of the cell membrane
and cell wall
Answer:
cell membrane: provides protection for a cell . It also provides a fix environment inside the cell and the membrane has several different fonctions . One is to transport nutrients into the cell and also transports toxic substance out of the cell.
cell wall: cell wall is a structual layer sorrounding some types of cells , just outside the cell membrane . it can be tough , flexible ,and sometimes riding. it provides the cell with both structual support and protection , and also acts as a filtering machine.