Answer:
Option B
Explanation:
In the book The Descent of Man published in 1871, Charles Darwin mentioned that the two recent most ancestor of present day human being live in Africa. These two recent ancestors of human beings are—chimpanzees and gorillas
Hence, option B is correct
Most scientists have biases, but they try to prevent bias from influencing their work.
What is bias?
A. having a point of view that is objective
B. having a point of view that is impartial
C. having a point of view that lacks prejudice
D. having a point of view that can influence an experiment
Answer:
a
Explanation:
Answer:Is B
Explanation: because is b
Storage polysaccharides, like starch and glycogen, often contain over a million glucose units. The energetic cost of synthesizing polysaccharides is high (about one high-energy phosphate bond per sugar residue added). Suppose that in a liver cell, the glucosyl residues in large numbers of glycogen molecules were replaced with an equivalent number of molecules of free glucose. What problems would this cause for the liver cell
Answer:
Glucose present as monomers within the cell will exert more osmotic pressure than a single glycogen molecule, resulting in endosmosis and the lysing of cells.
Also, the presence of free glucose molecules will result in increase in weight of the liver due to lack of efficient packing as in glycogen as well as the association ofnthe glucose molecules with water molecules.
Explanation:
Glycogen is a polysaccharide composed of glucose monomer units linked to Each other by α-1,4-glycosidic binds. α-1,6-branches arises at about every 10th glucose residue in the straight chain. Thus animals more glucose molecules to be stored within a much smaller space, thereby incresing the bulkiness of glycogen. Glycogen molecules are insoluble in the aqueous medium of the cell because it doesn't have enough free polar groups to participate in hydrogen bonding with water and are stored as granules and therefore do not affect the water potential or osmotic balance of the cell.
On the other hand, glucose molecules are highly soluble in water because it has many free polar -OH grours that form hydrogen bonds with water. If the glucosyl residues in large numbers of glycogen molecules were replaced with an equivalent number of molecules of free glucose, the free glucose will exert a high osmotic pressure inside the cell, causing the entry of water in the cell by endosmosis resulting in swelling and lysis ofnthe cell. Also, the space occupied by these free glucose units within the cell will be much larger than that of glycogen whichmenables efficient packing ofthe glucose molecules.
cion
Fully explain how speciation occurred on the
Galapagos Islands using 3-4 complete
sentences.
PLEASE HELPP!!
What is the function of neurotransmitters?
a) to transmit nerve impulses to other nerves or organs
b) to stimulate the production of epinephrine
c) to transmit nerve impulses inside the nerve
d) none of the above
Which of the following are the main parts of the cardiovascular system?
A. thymus, lymph, lymph nodes, spleen, and tonsils
B. esophagus, stomach, small intestine, and large intestine
C. nose, pharynx, larynx, trachea, and lungs
D. heart, arteries, capillaries, and vines
Pls, help! I am currently taking a test with this question on it! I will mark brainliest if u are correct!
(D)
HEART,ARTERIES,CAPPILARIES,AND VINES
HOPE IT HELPS THANK YOU ☺
Limestone formation in caves is considered what kind of weathering? A.mechanic B.chemical C.biological D.hydraulic
Ribosomes provide the scaffolding on which tRNAs interact with mRNA during translation of an mRNA sequence to a chain of amino acids.
a. True
b. False
Answer:
a. True
Explanation:
Ribosomes are ribonucleoprotein complexes composed of RNA and proteins, which have two main roles 1-decode the message of the messenger RNA (mRNA) molecule and the formation of peptide bonds in the protein. For this purpose, each triplet of nucleotide bases or 'codon' in the mRNA sequence is used to assemble specific amino acids in the nascent polypeptide chain. Although different, both prokaryotic ribosomes and eukaryotic ribosomes are composed of two subunits: one small subunit that decodes the mRNA into a specific amino acid chain, and one large subunit that forms the peptide bonds in the polypeptide chain. Each ribosomal subunit is in turn composed of ribosomal RNAs and proteins. These ribosomal RNAs act as scaffolds by combining with proteins that assemble into ribosomes (i.e., small and large ribosome subunits).
temperature usually increase when water condenses. which behavior of water is most directly responsible for this phenomenon?
Answer:
the release of heat by the formation of hydrogen bonds.
Explanation:
Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).
Condensation can be defined as a process which typically involves the change in the physical state of matter from the gaseous phase into a liquid phase i.e water changing from gas (vapor in the air) into a liquid form.
Temperature usually increase when water condenses. This phenomenon is as a result of the release of heat (exothermic reaction) by the formation of hydrogen bonds in water i.e hydrogen-hydrogen bond in water molecules formed by the chemical elements; oxygen and hydrogen.
Attitudes are ________
a. innate
b. generally positive
c. learned
d. unchangeable
What relationship do the deer and rabbits have in common with the squirrels and chipmunks?
Answer:
b
Explanation:
Which of the following is NOT a way to prevent the spread of infectious disease?
A. Get vacinated
B. Rinse dirty cutting boards with cold water
C.Don't share personal items
D.Wash your hands
Answer: I think B
Explanation:
What is this tiny bird doing in this big guy's mouth? The plover bird is
picking the chunks of meat out of the crocodile's teeth. This helps the
crocodile's mouth stay healthy and be ready for its next big meal. What is
type of relationship is being described?
What is the function of both the immune system and the endocrine system?
Answer:
The immune system is a host defence system that combines multiple mechanisms to protect an organism from several pathogens and the development of disease. The endocrine and immune system crosstalk and multiple immune processes are involved in endocrine diseases. Defects of immune tolerance associated with genetic and environmental factors result to the development of autoimmune diseases such as autoimmune thyroiditis and diabetes mellitus type 1. In addition, a mixture of immune cells and mediators is considered to be implicated in thyroid cancer development and progression. Multiple cytokines and the evolving inflammatory process are involved in the pathogenesis of insulin resistance and diabetes mellitus type 2 whereas immune mechanisms related to lymphocytes and cytokine circuits may play a role in the pathogenesis of osteoporosis. Several studies have recently been published regarding the therapeutic implications of immune system mechanisms on endocrine diseases. For complete coverage of all related areas
How did the angle of insolation affect temperature? What can you conclude about the effects of the position of the sun?
Answer:
The angle of incoming solar radiation influences seasonal temperatures of locations at different latitudes. ... At higher latitudes, the angle of solar radiation is smaller, causing energy to be spread over a larger area of the surface and cooler temperatures.
Explanation:
Why do silent mutations not affect the protein that the gene encodes?
Answer: Silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein. ... And when the amino acids of a protein stay the same, researchers believed, so do its structure and function.
10.) What hormone is released due to the rising level of estrogen in the bloodstream?
Answer:
10.) What hormone is released due to the rising level of estrogen in the bloodstream?
A) When the level of estrogen is sufficiently high, it produces a sudden release of LH, usually around day thirteen of the cycle.
-TheUnknownScientist
Answer:
LH hormone is released due to the rising level of estrogen in the bloodstream.
Help please!! | No links!
The trees in a forest were cut down to make room for a housing development. Explain how this impacts the environment.
Answer:
69
Explanation:
60+9=69
How are respiration and cellular respiration related?
Answer:
breathing is also known as respiration when you breathe in oxygen that your cells need for cellular respiration also when you breathe out carbon dioxide that your cells produce during the cellular respiration.
Explanation:
I hope this helps you ;)
Which of the following is a difference between arteries and viens?
arteries carry blood and veins carry only plasma
arteries do not have valves and veins do have valves
arteries are thin and veins are thick
arteries carry blood back to the heart and veins carry blood to the heart
The correct option is :
=》arteries do not have valves and veins do have valves.
Arteries don't have valves because back flow of blood isn't possible due to high pressure, but blood in veins doesn't have high pressure just like arteries, so to stop backflow of blood, veins have valves.
PLEASE ANSWER ASAP
Which of the following statements accurately describe a chromosome? Select all that apply.
a. Chromosomes contain one long DNA molecule that is tightly wound
b. Every chromosome has many genes as each gene is one segment of DNA
c. Every chromosome has one gene as an entire DNA makes up a gene
d. In any given organism, the gene(s) found on one chromosome can also be found on other chromosomes.
Answer:A
Explanation:
The statements that accurately describe a chromosome are:
a. Chromosomes contain one long DNA molecule that is tightly wound.
b. Every chromosome has many genes as each gene is one segment of DNA.
d. In any given organism, the gene(s) found on one chromosome can also be found on other chromosomes.
What is a chromosome?A chromosome can be defined as a thread-like linear strand of deoxyribonucleic acid (DNA) that is typically found in the nucleus of each cell.
The characteristics of a chromosome.In Genetics, some of the characteristics of a chromosome include the following:
Chromosomes is made up of a long deoxyribonucleic acid (DNA) molecule that is tightly wound.Every chromosome consist of many genes as each gene is a single segment of deoxyribonucleic acid (DNA).In any given organism, the gene(s) that is found on a chromosome can also be found on other chromosomes.Read more on chromosome here: https://brainly.com/question/1262952
Why is the taiga (boreal forest) considered "the driest moist biome" ?
Because it rains as little as the temperate rain forest, but retains most of its water throughout the year because of the cool temperatures.
Because it rains more than a tropical rainforest, but retains most of its water throughout the year because of the cool temperatures.
Because it rains as little as a desert, but retains most of its water throughout the year because of the cool temperatures.
Because it rains less than a desert, but retains most of its water throughout the year because of the cool temperatures.
C
Explanation:
i think its C sweethart btw how u been?
Taiga is considered as the driest moist biome because, it rains as little as the temperate rain forest, but retains most of its water throughout the year because of the cool temperatures.
What is taiga forest?In North America, Taiga is generally referred to as boreal forest or snow forest. This is world's largest biome, consist of cone bearing seed plants, mostly, of pines, spruces, and larches.
It covers most of inland Canada, Alaska, and parts of the northern contiguous United States in North America. In Eurasia, it covers most of Sweden, Finland, Russia from Karelia in the west to the Pacific Ocean, Norway and Estonia, some Scottish Highlands.
Throughout the year, taiga experience relatively low precipitation. Primarily it rains during summer, but can also be snow or fog. Due to low evaporation rate, it is sufficient for vegetation growth.
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Meiosis is a type of cell division that is specific to
Meiosis is a type of cell division that is specific to germ cells (gamete cells).
What is Meiosis?Meiosis may be defined as a type of cell division in which each parental cell is divided into four daughter cells. Each daughter cells are genetically unique to the parental cell and are haploid in nature.
Gamete cells are typically divided by this mechanism of cell division. This is because when toe distinctive gamete cells from male and female are fused together, the resultant zygote will have the entire set of genetic material.
The gamete cells significantly have half the amount of genetic content. Due to this, it is also known as reductional division.
Therefore, meiosis is a type of cell division that is specific to germ cells (gamete cells).
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Is it a animal or plant and y
Answer:
plants
Explanation:
plants have box like shape because they have cell wall
would it be better to mine in a wilderness area than a developed area?
Answer:
Yes.
Explanation:
Mining in a area of wilderness can provide great succes as long as you know the area well and know some things about where to mine and not.
Answer: Yes, it is better to mine in a wilderness area than a developed area.
Explanation: Mining is carried out to gather raw materials that serve as the foundation for any country's or region's growth. It is more likely to occur in a wilderness area than in a developed area because mining usually has a negative impact on the environment.
The ores recovered by mining, such as oil, coal, metals, and others, cannot be obtained from any developed location, and the mining process destroys settlements in developed areas.
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Which is a product of cellular respiration?
1, Methane
2, Water
3,Oxygen gas
4, Mitochondria
Identify all statements that accurately describe the structure of the pyruvate dehydrogenase (PDH) complex. E2 contains three domains. The complex contains multiple copies of each of three enzymes. A regulatory kinase and phosphatase are part of the mammalian PDH complex. The core of the complex is made up of several copies of E1 . Several copies each of E1 and E3 surround E2 .
Answer: The statements that correctly describe the structure of pyruvate dehydrogenase (PDH) complex are:
--> E2 contains three domains.
--> A regulatory kinase and phosphatase are part of the mammalian PDH complex.
--> Several copies each of E1 and E3 surround E2 .
Explanation:
Enzymes are proteins that speeds up a metabolic reaction by lowering the amount of energy needed to start the reaction. The type of enzyme in a cell will determine the metabolic processes that will occur in it.
Pyruvate dehydrogenase complex which is located at the mitochondria matrix, is a group of enzyme that catalyzes the breakdown of pyruvate, which is the end product of glycolysis, to form acetyl-CoA. The product formed from the reaction which is acetyl-CoA in turn enters the citric acid cycle where it is further oxidized for cellular respiration.
The structure of Pyruvate dehydrogenase complex consists of:
--> Three catalytic enzymes: These include;
• E1: This is the first enzyme of the PDH complex called pyruvate dehydrogenase. It catalyzes the removal of one carbon atom from pyruvate which leads to the production of hydrohyethyl.
• E2: This is the second enzyme of PDH complex called dihydrolipoamide S-acetyltransferase. It catalyzes the transfer of hydroxyethyl group to oxidized form of covalently bound lipoamide, and the resulting acetyl group is then transferred to free coenzyme A to form ACETYL-CoA and reduced dihydrolipoamide. Several copies each of E1 and E3 surround E2 and it consist of three DOMAINS. These domains include: N-terminal 9 kDa lipoyl domain, 4 kDa peripheral subunit-binding domain and C-terminal 28 kDa catalytic (acetyltransferase) domain.
• E3: This is the third and last enzyme of PDH complex called the flavoprotein dihydrolipoamide dehydrogenase. It re-oxidizes the lipoyl group of dihydrolipoamide-E2 to form lipoamide-E2 and NADH.
--> Two regulatory enzymes: The activities of E1 which is the rate limiting step of PDH complex regulated by phosphatases (activators) and kinases (inhibitors).
--> A binding protein: these aids in the binding of E2 to E3 enzyme in the core of PDH complex.
Where does pollination take place for an orange tree?
A. Flowers
B. Leaves
C. Roots
D. Trunk
( please help due right now )
Answer:
its A :)
Explanation:
i got the answer correct on my work
The diagram below represents some stages in the life cycle of humans. The numbers in the diagram represent various processes in the cycle.
Identify the process(es) represented by 1 and 2. State how these processes (1 and 2) affect the amount of genetic information provided by a parent to its offspring.
Answer:
The diagram below represents some stages in the life cycle of humans. The numbers in the diagram represent various processes in the cycle.
1. "The processes reduce the amount of genetic information from each parent by half."
During sexual reproduction, a specialized cell division process called meiosis occurs. Meiosis involves two consecutive divisions, resulting in the production of four haploid cells (gametes) from a diploid cell.
2. "Each parent only contributes half of the genetic information that is contained in his or her own cells."
As mentioned earlier, meiosis results in the formation of haploid gametes. Each gamete contains only one set of chromosomes, which is half the number found in the parent's diploid cells.
During meiosis, homologous chromosomes pair up, and genetic recombination occurs between them, shuffling and exchanging genetic information.
3. "Each egg (or each sperm) will carry only half of the genetic information contained in the parent's body cells."
This statement reiterates that gametes (eggs or sperm) are haploid cells containing only one set of chromosomes. When a cell undergoes meiosis to produce gametes, it divides twice, resulting in four cells with half the genetic information of the parent's body cells.
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no links please on My question or I will report you
Answer:
B, or 113 Fahrenheit
Explanation:
Explain why conflict avoidance does not help in sustaining positive relationship
Answer:
Avoidance is not healthy for sustaining the positive relationships as the ignorance or avoidance can cause the damage between the relationships of the people. The maintenance of the relationship among people can be hampered by avoidance. It can make the other people feel neglected. That can cause a failed relationship.
Explanation: