Answer:
The stem rust fungus produces several different structures during its life cycle. The most obvious of these on wheat are the reddish-colored urediniospores that form on leaves, stems, and heads during the growing season. These spores are spread by wind and infect wheat or barley plants.
The main function of a cell membrane is to allow substances to enter and leave the cell. Which is a correct description of transport through a cell membrane
Answer:
The question is incomplete, below is the completed question:
The main function of a cell membrane is to allow substances to enter and leave the cell. Which is a correct description of transport through a cell membrane ?
a. Diffusion, or passive transport, occurs when molecules diffuse from a lower concentration to a higher concentration.
b. Facilitated transport occurs when proteins that extend through the cell membrane provide a channel through which certain substances can diffuse more rapidly than by passive diffusion.
c. The lipid bilayer opens up and allows the ions or molecules to enter the cell, then closes.
d. Active transport occurs when molecules diffuse from a higher concentration to a lower concentration.
Answer:
b. Facilitated transport occurs when proteins that extend through the cell membrane provide a channel through which certain substances can diffuse more rapidly than by passive diffusion.
Explanation:
Transport through cell membranes can be broadly classified as active transport or passive transport.
Active transport requires energy in the form of ATP for the transportation of substances across the cell membrane.
Option b correctly describes facilitated diffusion, which is a passive-mediated diffusion process, where channels in the cell membrane mainly composed of proteins called transmembrane integral proteins, allow for the movement of certain molecules (mostly polar/hydrophilic) molecules that will not otherwise be transported through simple diffusion because of the hydrophobic nature of the cell membrane.
The other options are wrong because:
a. diffusion or simple transport involves the movement of substances from regions of higher to a lower concentration not lower to higher as suggested here.
c. The lipid bi-layer does not allow ions or hydrophilic molecules because it is hydrophobic in nature, and it is not a channel, so it does not open and closes
d. In active transport, transfer of molecules is from regions of lower to higher concentration and not higher to lower concentration as suggested here.
Which conclusion can be drawn from the experimental observation that a single strand of DNA contains 2100 dA residues and 1800 dT residues?
a. There must have been some loss of material in the extraction because the number of dA and dT residues must be the same.
b. This is a palindromic sequence.
c. There must be 2100 dT and 1800 dA residues on the complementary strand.
d. This must be prokaryotic DNA
e. None of these
Answer:
c. There must be 2100 dT and 1800 dA residues on the complementary strand.
Describe your plan to preserve the biodiversity of the town's lake. Make sure to include the materials that you would need for your plan to work and how you would scale it up to test it.
Answer:
10 Ways to Protect and Conserve Biodiversity
Government legislation.
Nature preserves.
Reducing invasive species.
Habitat restoration.
Captive breeding and seed banks.
Research.
Reduce climate change.
Purchase sustainable products.
Give five differences in the alimentary canal of flatworms earthworm and cockroaches
Answer:
Animals are adapted to the complex chain food since when they were no manufactured to the their food system. Without breakdown this complex food chain can not digest without breakdown.
Explanation:
Earthworm alimentary canal:
Earthworm have a segmentation of well developed characteristics of all animals. The alimentary canal of earth worm as well as flatworm consists of buccal cavity, mouth, esophagus, crop, intestines', gizzard, and anus. The digestion occur extracellular that means the digestion occur outside the cells. Cockroach is an omnivores. It ranging from starchy to the sweet things to the paper and clothes etc. It suits its diet. Its alimentary canal consists of Foregut, midgut and the hindgut. Both are different in their structure as well as in their alimentary canal._________ is (are) the product of Transcription, and the starting material of Translation. A. tRNA B. Amino Acids C. mRNA D. Ribosomes
Answer:
C. mRNA
Explanation:
Hello,
In this case, we may remember that when DNA is undergoing transcription a specific sequence is copied via the RNA polymerase in order to produce the messenger RNA which is subsequently used as the starting material of translation for the protein synthesis as shown on the attached picture. Thereby, answer is C. mRNA, since the transcription process produces it and then, for the translation process, it contains the codons which promote the formation of polypeptides (proteins) via the connection of the anti-codons contained in the tRNA which also provide the amino acids for the polypeptides formation.
Regards.
In ______, Gorter and Grendel extract lipids from blood cells. After evaluating them, they propose membranes are made of a ____________.
Answer:
The correct answer would be - 1925, phospholipid bilayer.
Explanation:
Gorter and Grendel performed an experiment in 1925 to extract lipids from blood cell and after extracting the protein they evaluated red blood cell membrane.
They found out that plasma membrane have two lipid layer and these lipids are made of phospholipids. Phospholipids are phosphate group that are attached with the lipid molecule.
Thus, the correct answer would be - 1925, phospholipid bilayer.
During the 1800's, what country was a leader of world exploration and placed at the center of most maps?
A. Britain
B. Spain
C. Morocco
D. USA
Answer:
B. Spain
Explanation:
Portugal and Spain are the western European nations that were the primary players in the age of discovery in 18th century. Under the leadership of prince henry the navigator. With the spread of missionary activities, Christianity becomes the world's largest religion. Exploration of the Americas and other nations started from this place.A purebred tall pea plant is cross-pollinated with a tall, heterozygous pea plant. Use a Punnett square to determine the probability the offspring inherita
recessive short allele. (I point)
75%
25%
0%
50%
Answer:
50%
Explanation:
because if you use the box method you see that half receive a short alele.
T t
T TT Tt
T TT Tt
Is this statement true or false?
A hypothesis is a lucky guess.
Answer:
false!
Explanation: i took the test
6. Members of the kingdom "Protista" are classified
into
A two domains.
C three species.
B three domains.
D three kingdoms.
Answer:
C.
Explanation:
Domain is above Kingdom, so it cannot be A or B. Protista is a Kingdom, so it cannot be D. Therefore it must be C.
Members of the kingdom "Protista" are classified as "C" three species.
Protists are a group of all the eukaryotes that are not fungi, animals, or plants.
What are the characteristics of Protista?They are eukaryotes.Most have mitochondria.They can be parasites.They all prefer aquatic or moist environments.Thus, option "C" is correct.
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Shell coiling in some snails has been found to be determined by the genotype of the snail's mother, rather than its own genotype. This is termed:
Answer:
maternal effects
Explanation:
The correct answer would be maternal effects.
The maternal effect is a genetic phenomenon that is characterized by an organism having the phenotypic expression that is compatible with the genotype of its mother irrespective of the organism's genotype itself.
This condition often occurs as a result of the mother supplying messenger RNA or protein to the egg that results in the formation of a zygote/embryo. Consequently, the genome of the mother dictates the functionality of the molecule in such offspring.
Dr. Payton is a psychiatrist who believes that the source of all
human behavior comes from the unconscious mind. Dr. Payton
likely follows which school of thought in psychologs
Answer:
The Psychoanalytic School of Thought
Explanation:
Psychoanalysis is a school of psychology founded by Sigmund Freud. This school of thought emphasized the influence of the unconscious mind on behaviour. Freud believed that the human mind was composed of three elements: the id, ego and superego.
g In humans and higher primates, _____ is the final product of purine base catabolism and is excreted in urine. However, its inadequate excretion is a cause of a disease called ______
Answer: Humans and greater primates excrete water, broken down proteins and Urea. Many things cause unusual urine, Urea gives urine its yellow color a lack of urea can mean kidney failure. however it's hard to tell a lack of urea by just looking at urine as drinking excessive amounts of water turns the color clear and drinking caffeine turns the color reddish or brown so lab testing must be done
A decrease in muscular activity or damage to neurons that attach to skeletal muscle can lead to a reduction in the size of muscle called
Answer:
The correct answer is atrophy
The total number of organisms an ecosystem can support is its tolerance range.
true or false
Answer:
false
Explanation:
the total number of organism an ecosystem can support is its trying capacity
Answer:
false
Explanation:
i just took the test.
All of the following statements concerning homeotic genes is correct except Group of answer choices They are responsible for determining the general body plan. They act as master control genes. They code for DNA-binding proteins. They are highly variable across species the animal kingdom.
Answer:
They are responsible for determining the general body plan.
They act as master control genes.
They code for DNA-binding proteins.
Explanation:
The homeotic genes are master regulators in development found both in animals and plants. In animals, Homeobox (HOX) genes encode for transcription factors containing a DNA binding domain of 60 amino acids which is evolutionarily conserved in species ranging from Drosophila to humans. In plants, MADS-box homeotic genes encode for proteins containing a conserved DNA-binding domain (in this case, referred to as MADS-box of 60 amino acids), which is capable of controlling developmental pathways in a similar mode to Hox genes in animals. Moreover, it is important to note that MADS-box genes are conserved not only in plants but also in other phyla including animals, fungi and protists.
During the Paleocene-Eocene Thermal Maximum, when global surface temperatures spiked, we observe temperate forests ____________________, insect herbivory of temperature.
Answer:
The overview of the problem concerned is listed below.
Explanation:
Mostly during Paleocene Eocene Temperature Optimum, we consider temperate vegetation momentarily relocated towards the poles whenever global average surface temperature jumped, bug harvesting temporarily escalated, as well as coral reef crashed.The level of variations in climate or temperature was as sluggish as it is today, which suggests that such past occurrences are likely to overestimate the effects of rising temperatures nowadays.Increase occur in the insect's population due to increase occur in global surface temperature.
During the Paleocene-Eocene Thermal Maximum, when global surface temperatures increase, we observe temperate forests having more population of insects due to favourable temperature for the growth of insects.
The productivity and distribution of forests could be affected due to change occur in the temperature, precipitation and the amount of carbon dioxide in the air. As the temperature increases the population of insects also increases which leads to increase in biodiversity of forest so we can conclude that increase occur in the insect's population due to increase occur in global surface temperature.
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PLEASE ITS URGENT!
Can someone help me name them!
Answer:
i filled the thing out for you. i didnt know what grade you were in so i just put the cell names in.
Explanation:
what is meant by oesophagus
Answer:
The oesophagus (gullet) is part of the digestive system, which is sometimes called the gastro-intestinal tract (GI tract). The oesophagus is a muscular tube. It connects your mouth to your stomach.
Answer:
the part of the alimentary canal which connects the throat to the stomach. In humans and other vertebrates it is a muscular tube lined with mucous membrane
Animal migration on savannas is often governed by
distance
reproduction
rainfall
fire
Answer:
The answer would be rainfall.
Explanation:
The reason why this is the answer is because rain is essential for survival in such a hot and dry climate. Droughts are quite frequent in the savanna and the lack of water leads to the death of many organisms.
Answer:
Rainfall is what often governs animal migration on savannas.
Explanation:
Brainlies please
Which multicellular clade arose first in the history of life on Earth? View Available Hint(s) Which multicellular clade arose first in the history of life on Earth? Land plants Animalia Fungi Protista
Answer:
Protista
Explanation:
Protista is the first class of multicellular organism that arose in history. The first of this member is cyanobacteria.
Cyanobacteria is large group of photosynthetic organism that produce their own food by using light energy from sun and carbondioxide.
The first evidence of multicellularity is from cyanobacteria-like organisms that lived 3–3.5 billion years ago.
They help to can convert inert atmospheric nitrogen into an organic form, such as nitrate or ammonia.
The multicellular clade that appeared first in the history of life on Earth is ANIMALIA.
The Kingdom Animalia (also known as Metazoa) is a clade that consists of multicellular-heterotrophic organisms, which cannot synthesize their own food.
It has been estimated that the first animals evolved around 800 million years ago.
The first animals that appeared on the Earth were sponges or sponge-like animals.
In conclusion, the multicellular clade that appeared first in the history of life on Earth is ANIMALIA.
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Please i need help !!!☹️
Answer: C. 9
Explanation:
Gestation refers to the time between when a baby is conceived till the baby is delivered. This is why the period of pregnancy is known as the Gestation Period.
During that time and after the fertilized egg implants itself in the uterus, the baby develops and grows until it is ready to be delivered.
The structure this occurs in is the uterus (womb) which is labelled 9 in the structure above.
What percentage of the nation’s demand for electricity could be produced in the future by wind energy?
Answer:
5-10%
hope this is helpful
It works because your brain creates images from dots. That’s how you can watch shows that you like a whole lot.
Answer:
The fovea works because your brain creates images from points.
Explanation:
The fovea is located in the center of the eye's retina. It is the structure capable of capturing stitches from what you are viewing and sending those stitches to the brain, which will "stitch" all stitches together and form an image. In summary, the fovea is able to project an image to the brain through pieces of the image, it is formed by cones that allow the transmission of light to the photoreceptors of the eyes.
The fovea works since your brain makes pictures from points.
BrainThe fovea is found within the center of the eye's retina.
It is the structure able of capturing stitches from what you're seeing and sending those fastens to the brain, which can "fasten" all fastens together and frame an picture.
The fovea is able to venture an picture to the brain through pieces of the picture, it is shaped by cones that permit the transmission of light to the photoreceptors of the eyes.
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What physical traits were favored in the peppered moth AFTER the Industrial Revolution?
Answer: Their skin color was dark which made the moths blend in. During the Industrial Revolution, the soot from factories caused the trees to become black. The light colored moths became easier to kill because they could not blend into their environment.
Explanation:
I need help with this
Answer:
I know the answer
Explanation:
Yes
Yes
Yes
chapter 1 in microscope biology
Answer:
100*
Explanation:
it is a bacteria which needs to be seen under a strong microscope.
Mitochondrial and chloroplast genomes typically Mitochondrial and chloroplast genomes typically encode some of the proteins needed for aerobic respiration and photosynthesis, respectively, as well as ribosomal and transfer RNA. encode for ribosomal and transfer RNAs. encode all of the proteins needed for aerobic respiration and photosynthesis, respectively. encode some of the proteins needed for aerobic respiration and photosynthesis, respectively. are composed of primarily noncoding DNA.
Answer:
The correct answer is "encode some of the proteins needed for aerobic respiration and photosynthesis, respectively, as well as ribosomal and transfer RNA".
Explanation:
Most organisms have a mitochondrial or a chloroplast genome in addition to the main genomic sequence located in the cell nucleus. The genes that are located in these organelles' genome include the genes that are used directly in the mitochondrion or chloroplast , including: proteins needed for aerobic respiration and photosynthesis (for instance genes involved in oxidative phosphorylation), respectively, as well as ribosomal and transfer RNA, which serve to the translation of proteins.
Food microbiologists are scientists who have a background in both microbiology and food science. They focus on how microbes grow, cause disease, and how they can be identified from food. Their work is of importance to the food industry as it relates to the production, preservation, and spoilage of food; and it is of importance to public health and regulatory agencies due to the many diseases that are related to food intake and consumption. Food microbiologists can have varying backgrounds, including training in veterinary medicine. This scenario is about a food microbiologist who works as a food safety inspector who pays a visit to a cheese manufacturing plant and makes some interesting discoveries!
Part A-Understanding the Role of Microbes in Fermentation The Midwest is known for its contribution to the dairy industry Fermented dairy products include milk, yogurt, and cheese. The fermentation process relies on lactic acid bacteria and pasteurization. Fermentation can vary based on what food is being produced, the type of bacteria used to produce lactic acid, and the time and temperature of pasteurization. It is important to the manufacturer to produce a product that won't spoil before it is packaged and sold and that won't result in disease for those who ingest and enjoy it. Julie, a food inspector for a local Michigan health department is going to a nearby cheese plant for a biannual inspection. When she gets there, she will take a tour of the plant and allow the operators to describe what makes their cheese so special. She will use what she understands about fermentation to inquire about their production practices Please sort the following statements as being true or false regarding fermentation and its role in food production. Please recall the role that microorganisms can play in the production of foods.
1. Fermentation allows for sugars to be broken down
2. Starter cutures are for the growth of pathogens or the food such as bread, vegetables, and n food Some grains, fruits, and
3. Fermentation can be used only to Bacteria ane the only have their own microbes that used in the Correct Statements
Answer:
Statements 1 is True.
Fermentation allows for sugars to be broken down
Statements 2 and 3 are false.
Starter cutures are for the growth of pathogens or the food such as bread, vegetables, and n food Some grains, fruits, and
3. Fermentation can be used only to Bacteria ane the only have their own microbes that used in the Correct Statements
Explanation:
In microbiology, fermentation is the process where sugars are broken down by the activities of bacteria to produce alcohol and carbondioxide...therefore statement one is true.
Starter culture are microorganisms use in diary production for producing yoghurt and cheese. They perform fermentation in diary production.
Each of two parents has the genotype blue/brown, which consists of the pair of alleles that determine eye color, and each parent contributes one of those alleles to a child. Assume that if the child has at least one blue allele, that color will dominate and the child's eye color will be blue. a. List the different possible outcomes. Assume that these outcomes are equally likely. b. What is the probability that a child of these parents will have the brown/brown genotype? c. What is the probability that the child will have blue eye color?
Answer:
See the answer below.
Explanation:
Let the allele for eye color be represented by A. Blue is dominant over brown eye color, hence, blue allele would be A while brown eye allele would be a.
Two parents have the genotype blue/brown which is equivalent to Aa.
Aa x Aa
AA 2Aa aa
blue eyes blue eyes brown eyes
a. Different possible outcomes: AA blue eyes, Aa blue eyes, and aa brown eyes.
b. Probability of a child from the cross having brown/brown (aa) genotype = 1/4 or 25%
c. Probability that the child would have blue eye color = 3/4 or 75%
