Answer:
Hilum is an elliptical scar on the seed, which marks the point of attachment of the funicle.
Micropyle is the small end of the helium in which the pollen tube go through prior to fertilization.
Answer:
Anton van Leeuwenhoek’s contribution in the development of cell theory?
Which of these is a producer? moth mushroom fern cheetah
Answer:
dear
from the above options fern is a producer
Answer:
ferns!
Explanation:
in a nutshell what is the relationship between kidneys and nephron
write in Spanish
Answer:
El riñón está compuesto de nefronas.
Explicación:
La relación entre riñón y nefrona tiene una gran importancia. Nephron es la unidad funcional estructural del riñón. El riñón está formado por millones de nefronas. Nephrons tiene dos partes principales i. mi. una parte funciona como un filtro y ayuda a limpiar la sangre, esta parte se llama glomérulo mientras que la otra parte agrega materiales útiles nuevamente al torrente sanguíneo, esta parte de la nefrona se llama túbulo.
What property of DNA makes it possible for a probe to find a single-stranded
DNA target gene?
A. Probes are dominant over genes.
B. Chromosomes come in pairs.
C. A DNA molecule has two paired strands.
D. Alleles are in pairs.
Answer:
A DNA molecule has two paired strands.
What is the function of amylase? What does amylase do to starch?
1. How is it possible for different species on different continents to have similar characteristics?
they have approximately the same genetic material and it changes slightly over great periods of time
1. Which one lived in Antarctica earlier, the labyrinthodont, the lystrosaurus, or the duck-billed dinosaur? Explain
Answer:
The correct answer is - The labyrinthodont.
Explanation:
Fossils of These duck billed dinosaur were found in the Antarctica in sands that were 66 to 67 million years old, however these are also found in north America and north Europe.
About 110 million years ago, labyrinthodonts, the dinosaur that are amphibians. These are the animals that were lived in the river valleys of the Gondwana and the rift valley that was located at that time between Australia and Antarctica.
Thus, the correct answer is - The labyrinthodont.
Consider the following statements:
1) Glycolysis involves a partial breakdown of glucose to produce two molecules of
pyruvate
31) Glycolytic reactions produce a net total of two ATP molecules
111) Glycolysis occurs in the mitochondrial matrix of eukaryotic cells
IV) Glycolysis produces 2 NADH molecules
V) Glycolysis cannot occur without oxygen
Which of the above statements is/are correct?
A) I only
B) I and II
C) I and III
D) I, II, and IV
E) I, II, IV, and V
Answer:
The answer is option D.
I, II, and IVHope this helps you
Why is ATP important in the metabolism or organisms? a. It hydolyzes to add free energy to exergonic reactions. b.The terminal phosphate bond has higher energy than the other two phosphate bonds. c. The terminal phosphate is held by a strong covalent bond that when hydrolizes, captures free energy. d. ATP provides energy coupling between exorgonic and endergenic reations
Answer:
ATP provides energy coupling between exergonic and endergonic reactions.
Explanation:
Adenosine triphosphate is an important molecule found in the cells and its role is to transport energy that is necessary for the cell or metabolic activities. These activities include muscle contraction and nerve impulse propagation. The ATP provides energy to both the energy consumption actions and energy-releasing reactions and thus needs a small amount of input of energy. The chemical bonds on breaking provide energy for cells to work.Which of these is a haploid cell?
Answer:
An egg
Explanation:
It contains a single set of 23 chromosomes
The image shows the skulls of three different organisms. The foramen magnum position is the hole in the skull where the spinal nerve cord passes through. Based on the structure of the skulls, which two statements can you infer?
Complete question: The image shows the skulls of three different organisms. The foramen magnum position is the hole in the skull where the spinal nerve cord passes through. Based on the structure of the skulls, which two statements can you infer?
a) All three organisms share a common evolutionary lineage
b) Wolves do not share any common ancestors with humans and chimpanzees.
c) Humans likely share more common ancestors with chimpanzees than they do with wolves.
d) Chimpanzees share more common ancestors with wolves than they do with humans.
Note: The skull figures are shown in the attached file
Answer:
a) All three organisms share a common evolutionary lineage
c) Humans likely share more common ancestors with chimpanzees than they do with wolves.
Explanation:
Although controversial, there is a theory that states that the foramen magnum is associated with bipedalism and human beings´ evolution. According to different studies, the foramen magnum moved from the posterior part of the skull to a central and ventral position. This displacement occurred as mammals began to move in two legs - bipedalism-.
When comparing different mammals skulls it seems evident that bipedalism and foramen magnum position and orientation are highly related. Although all mammals have a common ancestor, the foramen magnum of bipeds mammal organisms is located more anteriorly and ventral than the foramen magnum of the quadrupeds mammals.
In the exposed example, when comparing these three skulls, the two statements that might be inferred are:
a) All three organisms share a common evolutionary lineage. This is true because they are all mammals, and as a group, they share a common ancestor in evolution.
c) Humans likely share more common ancestors with chimpanzees than they do with wolves. This is true because by analyzing the foramen position, we can see that both the chimpanzee and the human´s foramen is located on the ventral side of the skull. Chimpanzees´ hole is more posteriorly and humans´ hole is more anteriorly or centrally located, but in both cases, they are in ventral position. Wolves´ hole, on the other hand, is located posteriorly. As we said before, Although all mammals have a common ancestor, the foramen magnum of bipeds mammal organisms is located more anteriorly and ventral than the foramen magnum of the quadrupeds mammals. And groups closer to human beings (in this case is chimpanzee) show their foramen magnum in a similar place than those mammal groups that are further in evolution (wolves).
Answer:
The person on top is right
Explanation:
Which of the following statements best characterizes how developed and developing countries impact the environment?
A. Neither developed nor developing countries have had a significant impact on the environment in
the past century.
B. Developed countries have tended to improve the environment, while developing countries have
tended to damage it.
C. Developed countries have damaged the environment, while developing countries have had little
impact
D. Both developed and developing countries have had significant negative impacts on the
environment.
Answer:
D. Both developed and developing countries have had significant negative impacts on the environment.
Explanation:
Nations of the earth are categorized based on their development status. A developed country is a country with higher industrialization e.g China, USA etc. while developing country is a country with lower industrialization e.g India, Nigeria etc.
When it comes to the sustainability of the environment, both the developed and developing nations contribute to the deterioration of the environment. This occurs in the sense that the more the industrialization, the greater the release of pollutants into the atmosphere or hydrosphere. This pollutants from sources like industrial waste, automobiles etc have a negative impact on the environment.
Hence, D. Both developed and developing countries have had significant negative impacts on the environment.
Answer:
It's answer D
Explanation:
I took the test ^^
Which two large landmasses formed when Pangaea first started to separate?
Africa and Europe
O Europe and Laurasia
Gondwanaland and North America
Laurasia and Gondwanaland
Laurasia and Gondwanaland were formed when Pangaea first started to separate.
What are landma-sses?A landmass is a very large area of land such as a conti-nent.
Landmasses include:
super continents
continents
Is-lands
There exist four major continuous landmasses on Earth:
Americas,
Ant-arctica, and Australia.
Afr-o - Eurasia,
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If there is a widespread break up of lysosomes what happens to the intracellular environment of a cell. A-The acidic environment from the lysosome may destroy the cell. B-The low pH of the cytoplasm will dilute any acid entering the cell. C-Enzymes enter the extracellular space and become inactive. D-The neutral pH of the cell is increased, thereby altering the functions of other organelles.
Answer:
All of the proteins that pass through the Golgi apparatus, except those that are retained ... are sorted in the trans Golgi network according to their final destination. ... an acid environment, and the lysosome provides this by maintaining a pH of ... to the cytosol, from where they can be either excreted or reutilized by the cell.
Explanation:
A triglyceride is made up of three fatty acids and one molecule of _____. glycerol glucose phospholipid water
Answer:
glycerol
Explanation:
A triglyceride is made up of three fatty acids and one molecule of _glycerol .
A triglyceride is made up of three fatty acids and one molecule of glycerol.
What is the main component of triglyceride?The triglyceride is made up to three fatty acids and one molecule of glycerol. During a dehydration reaction, there is a formation of a triglyceride by joining three fatty acids with glycerol backbone. At this time, three molecules of water are released.A triglyceride is made up of three fatty acids and one molecule of Glycerol.
Phospholipids, also known as glycerophospholipids, are the derivatives of fatty acids which is a major structural component of the cell membranes. Phospholipid is the class of lipids that is composed of a glycerol molecule that forms ester bonds with the two long-chain fatty acids and one phosphate group.
Therefore, A triglyceride is made up of three fatty acids and one molecule of glycerol.
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Which statement explains one way that ponds and lakes differ?
Ponds are shallower than lakes.
Ponds are larger than lakes.
Pond water moves more than lake water.
Lakes have more plants at the bottom than ponds.
Answer:
Ponds are shallower than lakes.
Explanation:
Lakes take up larger areas than ponds and are also much deeper.
Ponds are generally smaller and shallower than lakes.
The correct statement regarding ponds and lakes is Ponds are shallower than lakes.
What is ponds ?
A pond is a tiny body of water that is still. A lake is a sizable body of water that remains still. Few lakes contain water, however the majority of lakes do. An example of a salty lake is the Great Lake in Utah.
In certain huge lakes, the water may be so deep that sunlight may not reach the very bottom. Water plants and algae cannot survive on the lake bottom without sunlight. That's because photosynthesis in plants need sunshine.
Water for lakes and ponds can come from a variety of places.
Therefore, The correct statement regarding ponds and lakes is Ponds are shallower than lakes.
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(BRAINIEST FOR QUICKEST) Describe two safety precautions you should take when handling a flammable liquid.
Answer:
goggles and gloves
Explanation:
Match each characteristic to the type of protist it describes.
Answer:
Red algae
Explanation:
A bacterial or archaeal species is best defined as _____ the most fully characterized and most representative member of a taxon a collection of strains that share many stable properties and differ significantly from other groups of strains a collection of strains that have distinctive immunological reactivity the descendants of a single, pure microbial culture that have been maintained by careful aseptic technique
Answer:“a monophyletic and genomically coherent cluster of individual organisms that show a high degree of overall similarity with respect to many independent characteristics
Explanation:
Which is a result of a seasonal change (meaning a change that happens over
and over at a certain time of year)?
A. Plankton dying due to an oil spill
B. Frogs digging into mud to hibernate in the winter
C. Grass dying due to overgrazing
D. Fish moving away from a polluted site and into cleaner water
Answer:
b
Explanation:
the winter is a season
The answer is B. Frogs digging into mud to hibernate in the winter is a seasonal change that happens every year as temperatures drop in the winter.
What can be with case of planktons ?Plankton dying due to an oil spill, grass dying due to overgrazing, and fish moving away from a polluted site and into cleaner water are not necessarily tied to seasonal changes, but can occur due to other factors such as pollution, climate change, or human activities.
A seasonal change is a natural occurrence that happens regularly and predictably during certain times of the year. These changes are often triggered by shifts in the amount of sunlight, temperature, and precipitation that occur as the Earth moves through its annual orbit around the sun.
Some common examples of seasonal changes include the arrival of spring flowers, the turning of leaves in the fall, and the migration of birds in the winter.
In the case of frogs digging into mud to hibernate in the winter, this is a natural response to the colder temperatures that occur during the winter months.
As temperatures drop, frogs begin to slow down and their metabolism slows, causing them to seek out shelter and protection from the cold. By digging into the mud, they are able to protect themselves from freezing temperatures and other harsh winter conditions.
In contrast, the other examples given - plankton dying due to an oil spill, grass dying due to overgrazing, and fish moving away from a polluted site and into cleaner water - are not necessarily tied to seasonal changes.
These events can occur at any time of year and are often caused by human activities such as pollution, climate change, and overuse of natural resources.
While these events may have a significant impact on the environment, they do not represent the natural, predictable seasonal changes that occur as part of the Earth's natural cycles.
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what main carbohydrate do grapes have
the main carbohydrate in grapes is sucrose
Which period (not periodS) is older than the Triassic period? 1.Cambrian 2.Cretaceous 3.Jurassic 4.Paleogene
Answer:
is A
I took the test
The Triassic period is the longest geological period and the Mesozoic era's smallest. The Cambrian period precedes the Triassic period.
What is the difference between the Cambrian and Triassic periods?The Triassic era started 250-200 million years ago, following the greatest and most drastic widespread destruction ever.
It is recognized for the progression of Dinosaurs on land, flying pterosaurs, and swimming plesiosaurs as well as ichthyosaurs during the first Mesozoic period.
The Cambrian period is the most critical occasion of the Paleozoic era due to the presence of many animals.
During this time, the Earth's natural temperature is raised and the ice sheets started to melt at an alarming rate, causing widespread death and destruction.
Thus, the correct option is 1.
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Lauren, who has blood type AB, marries Sal who has type B blood but whose mother has type O.
.
List the genotypes of Lauren, Sal and Sal's mother.
• What are the percent possibilities for the blood type of their offspring.
Answer:
Lauren AB
Sal's mother OO
Sal BO
25% AB, 25%AO, 25% BB, 25% BO
25% type AB, 25% type A, 50 % type B
Lauren, Sal and Sal's mother blood groups are AB, BO and OO respectively.
What is Blood typing?A blood type is defined as a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells, where antigens may be proteins, carbohydrates, glycoproteins or proteins depending on the blood group system which may be glycolipids.
The ABO blood system has four main types which are as follows:
Type A: This blood type has a marker known as A.Type B: This blood type has a marker known as B.Type AB: This blood type has both A and B markers.Type O: This blood type has neither A nor B markers.Lauren and Sal have AB and BO blood groups, so the percent possibilities for the blood type of their offspring are 25% AB, 25%AO, 25% BB, 25% BO
Thus, Lauren, Sal and Sal's mother blood groups are AB, BO and OO respectively.
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Foliated metamorphic rocks have mineral grains that are randomly placed. true or false
Answer:
True
Explanation:
Metamorphic rocks are foliated if their mineral grains are arranged randomly.
Answer:
False
Explanation:
Foliated means to have grains placed in parallel layers, while non foliated rocks mean the grains are placed randomly
Parkinson’s disease is a brain disorder that may be caused by mutations in several genes that code for the production of alpha-synuclein. Individuals who have Parkinson’s disease exhibit symptoms such as uncontrollable tremors, difficulty walking, and loss of coordination. How might geneticists determine where the mutations that cause Parkinson’s disease are located? PCR analysis gene mapping DNA fingerprinting STR analysis
Answer:
They could use SNPs(Single nucleotide polymorphisms) of DNA, which are an anaylysis of chromosomes using high tech laser magnification. This SNPing allows scientist to more closely view specific genes in chromosomes that cause certain traits. It allows for a greater genetic mapping and could also be used to see mutations, if you know which chromosome to look at.
IDK, just an idea, SNPs were used to look at different species trait exhibition, I thought it might work for this if used properly.
Answer:
B) gene mapping
Explanation:
edge
2 Points
What do a dinosaur and a tree have in common?
A. They may have shared the same matter.
B. They both get their energy from plants.
C. They both get energy directly from the Sun.
Ο Ο
D. They both have the same exact DNA.
SUBMIT
Answer:
A. They may have shared the same matter
Two fruit flies that are heterozygous for body color and eye color are crossed. Brown body color is dominant to black body color. Red eye color is dominant to brown eye color. Use the Punnett square to determine the ratio of offspring with: Brown body and red eyes Brown body and brown eyes : Black body and red eyes : Black body and brown eye.
The ratio of offspring that possess the following phenotype is as follows:
Brown body and red eyes: 9Brown body and brown eyes: 3Black body and red eyes : 3Black body and brown eye: 1This question involves two genes coding for body color and eye color in fruit flies respectively. The brown body color allele (B) is dominant over the black body color allele (b) in the first gene while the red eye color allele (R) is dominant over the brown eye color allele (r) in the second gene. In a dihybrid cross between two fruit flies that are heterozygous for both genes i.e. BbRr × BbRr, the allelic combinations of gametes produced by each parent fruit fly will be:BbRr- BR, Br, bR and brUsing these gametes to complete a punnet square (see attached image), 16 possible offsprings will be produced in a ratio 9:3:3:1 where;Brown body and red eyes (B_R_) : 9Brown body and brown eyes (B_rr) : 3 Black body and red eyes (bbR_) : 3Black body and brown eye (BbRr) : 1Hence, the ratio of the offsprings will be 9:3:3:1Learn more about punnet square at: https://brainly.com/question/14504341?referrer=searchResults
Answer:
9, 16, 3, 16, 3, 16, 1, 16
Explanation:
Brown body and red eyes ⇒ 9 ⇒ 16
Brown body and brown eyes ⇒ 3 ⇒ 16
Black body and red eyes ⇒ 3 ⇒ 16
Black body and brown eyes ⇒ 1 ⇒ 16
why are embryonic stem cells useful for medicine? A. They can become more cells than adult stem cells can. B. They are already differentiated into organ cells C. They are only found outside the blastocyst D. They are usually unipotent or multipotent stem cells.
Answer:
They can become more cells than adult stem cells can.
Explanation:
APEX checked by myself
The embryonic stem cells are useful for medicine because they can become more cells than adult stem cells can.
What is embryonic stem cells (ESCs)?These cells are found in blastocyst.These are pluripotent meaning they have an ability to give rise to new different cells.What is adult stem cell?The cells found in human body that give rise to limited number of cells.Why embryonic stem cells are used in medicine?ESCs divide to give rise to large number of cells which can be used to replace, regenerate or repair the damaged cells.Hence, the correct option is A. They can become more cells than adult stem cells can.
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Write a paragraph of 150 words on the subject ‘different ways to protect ozone layer and prevent emission of hazardous gases’ for hindi
Answer:
There are a few different steps we can take to protect the ozone layer. As you know, the ozone layer is the layer that protects us from the sun’s powerful UV rays and it also protects us from other harmful things roaming in space. The first thing we can do to protect the ozone layer is reduce the use of natural gases. The gases produced from the natural gases had torn holes in the ozone layer. A way to prevent emissions of hazardous gases Is to switch to renewable energy. Renewable energy is not only easier to access and replace, solar panels and wind energy dont give off harsh and hazardous gases that mess with the ozone layer and the climate.
Explanation:
I don’t know how Many words that is. You can add to it if you feel the need to. I don’t know Hindi, maybe you can translate it on google?
please help !! 22 points !
Name three ways that an embryo changes during the first trimester.
Answer:
The embryo develops the heart, nervous system and face.
Explanation:
The nervous system is one of the first things to develop, following is the heart and then their face. Physical traits which also develop are the arms, legs and sexual organs.
Read the passage: Genetically Engineered Corn. Then 1. Explain what Bt corn is and how it is made. 2. Describe the benefits of Bt corn. 3. Describe the risks of Bt corn. 4. Make an argument for or against the use of Bt corn and provide support for your position.
1. Bt maize is a genetically modified maize. It is produced through biochemical techniques and with the use of biotechnology that allows genes of Bacillus thuringiensis bacteria to be introduced in the DNA of corn. These genes allow Bt maize plants to produce a toxic protein specific to certain groups of insects.
2. With the production of this protein, Bt corn becomes immune to attack by these insects. As a result, the use of pesticides in the corn crop is reduced, which makes production healthier and avoids side effects on the soil. In addition, it prevents the production of corn from falling due to the attack of insects.
3. Among the disadvantages, we can say that Bt maize does not control all the pests that attack maize, only a few, which allows maize to be attacked. It can also trigger evolution in pest species that are immune, creating a toxin-resistant species. Finally, it can create contamination in wild maize crops (that is, those that have not been genetically modified), ending diversity.
4. I believe that the use of Bt corn is favorable. This is because it allows a greater production of food to meet our need and increasingly intense demand for food. However, it is necessary to affirm that the use of this corn needs regulation and inspection, mainly in the big industries that can harm the small producer.
Answer:
3. Among the disadvantages, we can say that Bt maize does not control all the pests that attack maize, only a few, which allows maize to be attacked. It can also trigger evolution in pest species that are immune, creating a toxin-resistant species. Finally, it can create contamination in wild maize crops (that is, those that have not been genetically modified), ending diversity.
Explanation: