Answer:
See the answer below
Explanation:
Liverworts, mosses, or ferns hardly grow in dry biomes because they require moist environment in order to successfully sexually propagate themselves.
During sexual reproduction, the male sperm requires water to swim and meet the female egg. This means that without water, fertilization cannot take place and sexual propagation will become impossible. This is unlike advanced plants in which there are various means by which the pollen can travel to meet the ovule.
Hence, the group of plants in question hardly grow in dry biomes.
Which gland secretes chemicals that exert subtle effects on the sexual behavior and physiology of other people
Answer:
The Apocine glands.
Explanation:
These glands secrete sex pheromones This is the chemical substances which exhibits subtle effects on the sexual behavior and physiology of other people.
They are located at the axilla,anogenital region, at the areola and the nipple etc,The breast is a modified apocrine gland.It contains the mammary gland which secrets the best milk.Thus it is an example of apocrine gland.Basically,pheromones are has a significant reproductive effect on the opposite organism concerned.It aids mating,
Their hormonal secretions is released through the plasma membrane by budding off from the extracellular membrane,
The mammary glands enlargement during pregnancy primarily as a consequence of what hormonal process?
a- hormonal anaplasia
b-compensatory hyperplasia
c-hormonal hyperplasia
d- hormonal dysplasia
e- none of the above.
Answer:
c-hormonal hyperplasia
Explanation:
When there is increase in the number of cells and tissues that appear normal under the microscope,Hyperplasia is said to occur.If these occur in cells of an endocrine gland of a system,then it is refers to as hormonal hyperplasia.
Therefore during pregnancy,the proliferation of the glandular epithelium in a pregnant woman (and at puberty in a females are examples of hormonal hyperlasia.
Its possible causes are;
a surge in local production s of growth factors,
In the numbers of growth factors receptors on the cells receptive to the factors,
and due to activation of specific intrancellular signalling pathways.
In Type I diabetes the body cannot make ______ and in Type 2 diabetes the hormone ________ doesn't work properly.
(Choose the best option.)
1. Estrogen and insulin
2. Epinephrine and insulin
3. Insulin and glucagon
4. Insulin and insulin
Answer: 4. Insulin and insulin
Explanation:
Diabetes indicates that the level of glucose, or sugar, is very high in the blood. It occurs when the pancreas doesn't produce enough insulin or when the body doesn't use insulin properly (called insulin resistance). Insuline is a hormone that helps glucose get into the cells to give them energy, and glucose comes from the food and drinks being the main source of energy. Sometimes a person has both problems. In both cases, the result is that glucose does not enter the cells and builds up in the blood.
In type 1 diabetes, the pancreas does not produce insulin, Without insulin, too much glucose stays in the blood and over time, high blood glucose levels can cause serious problems in the heart, eyes, kidneys, nerves, gums, and teeth.
With type 2 diabetes, the most common type, the body does not make or use insulin well. There is a higher risk of type 2 diabetes if the person is older, obese, have a family history of diabetes, or don't exercise. Also, having pre-diabetes also increases that risk because people who have pre-diabetes have higher than normal blood sugar but not enough to be considered diabetic.
So, in type 1 diabetes there is an absolute lack of insulin due to the destruction of the pancreatic islets. While type 2 diabetes is a metabolic disorder characterized by hyperglycemia (high blood sugar) in the context of insulin resistance.
enzymes ___ the activation energy threshold required to start a chemical reaction lower or raise
Answer:
lower
Explanation:
Enzymes are chemical substances or biological molecules that catalyze biological reactions by lowering the activation energy threshold required to start such reactions.
The activation refers to the minimum energy that must be conquered by the reactants in a chemical reaction in order to cross over to the product's side.
Enzymes work by lowering this energy and hence, making the crossing over to the product's side faster than normal. They are not themselves used up in reactions and can always be recovered and reused.
Correct answer: lower
Hi where is the Mumbai tribe from
rines
Which nucleotide bonds with
Cytosine in RNA?
som
anh
A. Thymine
midines
B. Uracil
It
C. Adenine
D. Guanine
Answer:
In RNA cytosine binds to Guanine
Explanation:
I hope this will help you :)
Answer:D
Explanation:
78. What color pigmentation is associated with pregnancy mask?
brown
blue
b. yellow
d. red
Identify internal and external factors that regulate cell division
Answer:
External factors can be cell to cell contact. Internal factors can be when the DNA is disrupted or a cell already has two of a part then will be divided.
Explanation:
Cell to cell can make a cell think it has already been divided while if DNA is disrupted it could cause nonstop growth, known as cancer.
Cells in contact with one another can be considered an external force. Internal factors can play a role in cell division, such as when the DNA of a cell is damaged or when it already contains two copies of a particular component.
What are factors regulating cell cycle?Signals that come from the outside can be either physical or chemical. Contact between individual cells is an illustration of a physical component. Once they come into contact with other cells, the vast majority of mammalian cells will cease their dividing. One example of a chemical signal would be growth factors, which are proteins that encourage cell proliferation and are also an example of chemical signals.
Internal factors such as kinases and cyclins are responsible for regulating cell division. Cyclin-dependent protein kinases are responsible for determining, once cells reach a checkpoint in the middle of the cell cycle, whether or not they will continue the process of cell division or call an end to it.
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the analysis and comparison of DNA to better understand relationships between species
Answer:
comparative genomics
Explanation:
Comparative genomics is a field of biological research in which the genomic features of different organisms are compared. The genomic features may include the DNA sequence, genes, gene order, regulatory sequences, and other genomic structural landmarks.
What is the significant difference between chimpanzees and humans that accounts for the divergence between the two species in areas such as complex thought and advanced culture?
Answer:
speech
Explanation:
humans and chimpanzees are different mainly on the significant difference on being able to use speech by humans and not used by chimpanzees. Moreover, humans have such a powerful brain and which provides logics that enable them to carry out more works than any other of their species.
Ethnographic evidence has revealed that traditionally, Pawnee women worked wood, and among the Hidatsa, women made boats. Cases such as these suggest that:_________
Answer:
patterns of division of labor by gender are culturally general—not universal
Explanation:
Based on this information it can be said that cases such as these suggest that patterns of division of labor by gender are culturally general—not universal. Meaning that division of labor by gender would be drastically different depending on the surrounding culture, such as in this case women worked wood and made boats, yet in another culture such as American Culture, it is Men that worked such manual labor jobs.
Differentiate between first and second order consumers?
Explanation:
The difference between first and second consumer are,
The first consumer are autotrophic in nature but second consumers are heterotrophic in nature.The first consumer are mostly plants and second consumers are mostly animals.The first consumer are called producers and second consumer are called herbivores.hope it helps..
Exposing skeletal muscle fibers to ________ removes ions and ATP from the cells and disrupts the troponin-tropomyosin complex such that it can no longer block the active sites on the actin molecules.
Answer:
Glycerine/Glycerin
Explanation:
This is a colourless ,odourless syrup liquid which is sweet to taste .it is non toxic,it is also refers to as glycerol.Its medicinal uses includes anti bacteria and anti viral for wound treatments,and as a marker in liver diseases.
Chemically it contains three hydroxyl (OH) group bonded together.This structure is an adaptation for dissociation in water and also accounts for its hygroscopic nature.
When a muscle fibre is exposed to Glycerine,these cells contracts,reducing the space among the cells.Hence the fibres contraction is affected,follow by reduction in length.
Basically, during glycerine is applied to muscle cells,this substance punctures the sacolemma, creating holes.The latter aid the diffusion of ca+ and ATPs across this membrane in the muscle cells.
Generally the ca+ from the Sacroplasmic reticulum binds with the troponin,leading to the change in its shape to bind with the actin filament.Protein tropomyosin also binds with the actin filaments on different positions. Thus these proteins forms the troponin-tropomyosin complex on the filament.The proteins exposes part of the actin molecules, as the binding site for the myosin head cross bridges between the two filaments types.
Hydrolysis of ATP supplies energy for the withdrawal of the myosin head from the actin filaments and its tilts back to the filaments to ensure contraction and relaxation of muscles muscles fibres.
Now.if glycerine created holes in the sacrolemma,Ca+ ions will be reduced,ATPs molecules hydrolysis will be also be affected,therefore, troponin-tropomyosin complex can not be formed.Thus actin filaments would not be exposed,for myosin head to bind, (therefore the myosin binding site is blocked on the actin molecules)this eventually prevent muscles contractions without the nervous transmission.
Question 2
The structure of DNA is described as a:
Answer:
Double-Stranded Helix
Explanation:
DNA is the molecule that holds the instructions for growth and development in every living thing. Its structure is described as a double-stranded helix held together by complementary base pairs.
Answer:
Double helix
Explanation:
homestyler in the regulation of an organism's internal environment to maintain conditions suitable for life
The question is incomplete as the nature of question is not clear, however the correct question is as follows:
homeostasis is the regulation of an organism's internal environment to maintain conditions suitable for life. homeostasis requires....
Answer:
The correct answer is - Homeostasis requires balances between many factors in the body such as the body temperature, chemical and physical balance, pH etc
Explanation:
Homeostasis is the ability of an organism to regulate or maintain its internal environment or conditions according the condition require for survival of organism or cell.
It is the characteristic feature of living organisms and life to adapt or maintain the equilibrium of cell's chemical, physical environment.
Thus, the correct answer is - Homeostasis requires balances between many factors in the body such as the body temperature, chemical and physical balance, pH etc
Chemical reaction equation such as the one for photosynthesis show the reactants and products of a reaction how does this symbol percolation mystery present what takes place during the process of photosynthesis
Answer:
The reaction of C02 with water(H20) to give as reactants,to give Oxygen as byproducts and CHO as the chief product is called photosynthesis.
This is usually represented as a single step reaction as
12C02 + 6H20 + photons of lights → 6C6H12O6 + H20 + 6O2
Explanation:
Far from being true the above equation did not represent the actual course of reaction taking place.The reaction actually take place in two pathways based on the period of the day.
The first step is Photolysis of water,which refers to the splitting of water molecules to H+ and e- and Oxygen.
H20→ H+ + 4e- +02. .The oxygen from the photolysis reaction is the oxygen present in the single overall equation above.Because this occur in the day it is called light dependent stage.
Furthermore the H+ ions is transferred to the second stage of photosynthesis,It takes place in the dark,and therefore called light independent reaction/stage.The hydrogen ion is transferred to the Calvin cycle for the reduction of CO2,to form CHO,protein and Lipids
The essential process involves the chemiosmosis, for ATP synhesis. That is the transfer of the H+ into the thylakoid membrane of the chloroplast,which leads to the build up of hydrogen ions between the thylakoid space, and the set up of elcetochemical gradients.The latter generate energy as Protons diffuses back into the stoma for phophosphorylation of ADP to form ATP by ATPase synthase.
The ATP synthesized is used in Calvin Cycle for carbohydrate synthesis.This is the carbohydrate in the single reaction of photosynthesis above.
Therefore the single common equation does not give a true reflection of the entire sequence of reaction
Human blood type is a trait that can be expressed with multiple alleles. A and B are both dominant to O, but neither is dominant to the other. When A and B are both present in the genotype of an individual, both alleles are expressed. If a father has Type AB blood and a mother has Type O blood, what percentage of their children are expected to have Type O blood like the mother
Answer:
0% of their children are expected to have type O blood like their mother.
Explanation:
We know that alleles A and B are both dominant, so when they are inherited, there is a codominance of them because the two of them express. In the case of the allele O, we know that is recessive in the presence of A or B. If we put this information in a Punnet Square, we know that all their children will be AO or AB, so none of their children will be type O blood.
║ A ║ B║
O ║ AO ║BO║
O ║ AO ║BO║
The percentage of children that are expected to have Type O blood like the mother is zero (0%).
The four blood groups (A, B, AB, and O) are controlled by three alleles of a single gene: A, B, and O.
The individuals who have both A and B alleles show an AB phenotype because both alleles (A and B) are expressed, i.e., they are codominant.
Moreover, both A and B alleles are dominant over the O allele.
In consequence, individuals who have AO genotype show an A phenotype; whereas individuals who have BO genotype show a B phenotype.
In this case, all children will be a heterozygous genotype (either AO or BO) because the father has an AB genotype.
In conclusion, the percentage of children that are expected to have Type O blood like the mother is zero (0%).
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Hair of the axilla can be considered what
Answer:
A. Determinate
B. Indeterminate
The answer is Determinate hair
Explanation:
Hair of the axilla which is also referred to as axillary hair is found under the arm.
A hair is referred to as being determinate if it is being replaced from time to time as a result of it getting old and wearing out.
The underarm hair is an example of the type of hair which undergoes the determinate type of growth process.
Indeterminate hair growth such as the one on the scalp continues to grow continuously and rarely wears out.
In intramembranous ossification, the model or template on which the bone forms is Group of answer choices mesenchyme tissue elastic cartilage hyaline cartilage fibrocartilage
Answer:
Mesenchymal tissues.
Explanation:
Intramembranous ossification is process that allow the formation of bone from the fibrous membrane where bone tissues are created. It is the direct conversion of mesechymal tissues into bones. This process take place in the bone of the skull where mesenchymal tissues differentiate into cartilage and latter replaced by bones. Tye flat bones of the face, cranial bones and clavicles are formed by intramembranous osssification
What's Inside a Black Hole?
What happens to electrons when pigments in Photosystem II absorb light? They combine with oxygen and hydrogen to produce water. They are pumped across the membrane into the thylakoid. They move through an electron transport chain to Photosystem I. They become excited and break down the pigments to release ATP.
Answer:
The correct answer is They move through an electron transport chain to Photosystem I.
Explanation:
Luminous energy is trapped by a chlorophyll molecule in the Photosystem II. When the pigment molecules absorb light, electrons get in a higher energy level. These excited electrons go through the electron transport chain to an inferior energy level in the photosystem I. When the excited electrons leave photosystem II, they are replaced by new electrons that are extracted from the water molecules. As electrons go through the transport chain, their released energy is used to produce ATP molecules. Luminous energy absorbed in the photosystem I move the electrons to another electron acceptor from where they are transported again and used to produce NADPH molecules. When electrons are eliminated from Photosystem I, they are replaced by new electrons that are coming from the photosystem II through the transport chain.
what is 6.9 times 10 to the 7th power
Answer:
69000000
brainlest please and its acually not hard you just have to mutiply everything yk
Answer:
69000000
Explanation:
Since there are seven zeros in powers of ten notation it would be ten million
10000000 times 6.9 will give you 69000000
A DNA sequence encoding a five-amino acid polypeptide is given below. …ACGGCAAGATCCCACCCTAATCAGACCGTACCATTCACCTCCT…
TGCCGTTCTAGGGTGGGATTAGTCTGGCATGGTAAGTGGAGGA…
a. Locate the sequence encoding the five amino acids of the polypeptide and identify the template and coding strands of DNA.
b. Give the sequence and polarity of the mRNA encoding the polypeptide.
c. Give the polypeptide sequence and identify the N-terminus and C-terminus.
d. Assuming the sequence above is a bacterial gene, identify the region encoding the Shine-Delgarno sequence.
e. What is the function of the Shine-Delgarno sequence?
Answer:
Explanation:
a. The template strand is:
ACGGCAAGATCCCACCCTAATCAGACCGTACCATTCACCTCCT
The coding strand is
TGCCGTTCTAGGGTGGGATTAGTCTGGCATGGTAAGTGGAGGA
The sequence encoding the five amino acids is: 3' CTA-ATC-AGA-CCG-TAC-CAT 5'
b. 5' AUG-GUA-CGG-UCU-GAU-UAG 3'
c. N terminus Met-Val-Arg-Ser-Asp C terminus
d. GGAGGA
e. The shine Delgarno sequence as a mRNA binding site for mRNA's binding to the small subunit ribosome.
The process by which a semipermeable membrane allows water molecules, small molecules and ions to pass through while retaining the larger molecules is known as:_______
a) Dilution
b) Hydration
c) Solvation
d) Dialysis
e) Titration"
Answer:
The answer is Dialysis.
Explanation:
Dialysis is the process by which a semipermeable membrane allows the water molecules, small molecules and ions to pass through while retaining the larger molecules. Thus, the correct option is D.
What is Dialysis?
Dialysis is the process of separating molecules in a solution by the difference in the rates of diffusion through a semipermeable membrane. Membranes such as dialysis tubing. Dialysis is a common technique which operates on the same principle as the medical dialysis.
One of the most common application of dialysis is the removal of unwanted small molecules such as salts, reducing agents, or dyes from the larger macromolecules such as proteins, nucleic acids like DNA, or polysaccharides. Dialysis is also commonly used for the purpose of buffer exchange and for the drug binding studies.
Therefore, the correct option is D.
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Which correctly lists three agents that loosen and carry away rock during the erosion process?
animals,heat,sedimentheat
heat, wind, plants
plants, animals, wind
sediment, heat, plants
Answer:
Plants, animals, wind
Explanation:
I used the process of elimination. Heat and sediment cannot move dirt and/or rocks
Animal and plant movement is a factor in biological weathering. For instance, a plant may grow in a gap in a rock and, as its roots spread, cause the crack to widen. Even you have the potential to weather! Thus, option C is correct.
What loosen and carry away rock during erosion process?The dirt is kept in place by plants. Some animals scrape pebbles as they eat to weather them. Other creatures alter the surface of the Earth by digging into it and shifting stuff.
The majority of the vegetation can be destroyed by an excessive number of animals, which speeds up erosion.
Earthen materials are worn away during erosion, a geological process in which they are moved by wind or water.
Therefore, Earthen materials are worn away during erosion, a geological process in which they are moved by wind or water.
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12. Endocrine gland that is located posterior to the sternum, within the mediastinum of the thoracic
cavity.
The correct answer is the thymus
What type of interaction is the amino group most likely to be involved in?
o
H,N-CH-Cho
CH,
CH,
osco
Answer:
H,N-CH-Cho
Explanation:
Hope it helps.
Into which layer of the Earth do plate boundaries extend?
-outer core
-lithosphere
-lower mantle
-asthenosphere
Answer:
The correct answer is B. Lithospehere. I took this on edge. Glad I could help!
Answer:
lithosphere
Explanation:
Choose one of the following, and describe why they might have been interested in Charles Darwin's findings : a. A zoologist in the late 1800s b. A prizet in the late 1800s c. A paleontologist in the late 1900s
Answer:
i think its c
Explanation:
In general, how are the causes of mass extinctions different from the causes of background extinction?
Answer:
background extinction refers to the normal extinction rate.these are species that go extinct simply because not all life can be sustained on earth and some species simply cannot survive. while, mass extinction is a widespread event that wipes out the majority (over 50%) of living plants and animals.