Infant suckling
Infant suckling is the stimulus that is needed for continued and sustained production of breast milk. When an infant suckles, stimuli are transmitted to the mother's pituitary gland and prolactin (a hormone responsible for milk production) is released by the pituitary and this leads to the production of more milk. The more an infant suckles, the higher the prolactin level and the amount of milk produced.When genes in the same location on homologous chromosomes vary slightly in sequence with respect to each other, the genes are called?
Why is cell theory classified as a theory and not a hypothesis
Producers rely on ____________ to create chemical energy and consumers rely on ____________ to release chemical energy.
A type of asexual reproduction where part of an organism breaks off and develops as a new organism
The answer is budding. IN this type of asexual reproduction, the offspring are genetically identical to the parent. Examples of an organism that reproduces by budding include hydra, starfish, corals, and sponges. Yeast, fungi, also reproduce asexually by budding.
Answer:
budding!
Explanation:
i got this correct on my quiz :)
which kind of tumor grows in only one part of the body?
a. malignant
b. somatic
c. benign
d. signal
Inhalation and exhalation move air into and out of the lungs. what happens when you inhale and exhale? drag the labels to the correct locations on the flowchart to identify the steps of inhalation and exhalation. view available hint(s) resethelp
_____ is a common nutrition-related sign or symptom of early pregnancy that occurs in many healthy pregnant women. question 19 options: fatigue hypertension gestational diabetes pernicious anemia
The right option is fatigue
Fatigue is a feeling of tiredness, lack of energy and motivation. Fatigue is a symptom of iron-deficiency anemia, which is common in pregnancy. During pregnancy, hormonal changes such as increased progesterone levels, physical changes and emotional changes occur in the body and this can contribute to decreased energy resulting in fatigue.Fatigue, typically stemming from morning sickness due to elevated hormones, is a common nutrition-related symptom in early pregnancy. Hypertension and gestational diabetes usually occur later in pregnancy while pernicious anemia is not associated with pregnancy.
Explanation:The common nutrition-related sign or symptom of early pregnancy mentioned in the question is likely fatigue. Fatigue can occur due to the body's reaction to the increased circulation of pregnancy-related hormones such as estrogen, progesterone, and hCG. These hormones can lead to symptoms such as nausea and decreased intestinal peristalsis, often referred to as 'morning sickness', which can persist all day and contribute to feelings of fatigue.
While hypertension and gestational diabetes can develop during pregnancy, they are not typically symptoms of early pregnancy. Pernicious anemia is not associated with pregnancy but is a condition where the body is unable to absorb vitamin B12 from the gastrointestinal tract.
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Those substances on the _____ are not subject to food additive regulation.
Which male accessory structure is inferior to the urinary bladder and surrounds the superior portion of the male urethra?
Traits, conditions, or diseases that are passed down through families through one of the X or Y chromosomes.
its sex-linked recessive
The central dogma of molecular genetics, which follows information flow within the cell, is as follows: dna---->__________---->rna---->__________---->protein
a. translation; transcription
b. synthesis; polymerase
c. transcription; translation
d. intron; exon
In garden peas, tall is dominant to short. if two heterozygous tall plants are crossed, what proportion of the tall progeny will be homozygous dominant?
What is the primary function of the calvin cycle of photosynthesis?
The Calvin cycle is a crucial part of photosynthesis that converts atmospheric carbon dioxide into carbohydrates using ATP and NADPH, thereby storing energy from sunlight in a form that the plant can use for growth.
Explanation:The primary function of the Calvin cycle in photosynthesis is to convert carbon dioxide from the atmosphere into carbohydrates. This process, also known as carbon fixation, occurs in the stroma of the chloroplasts. During the Calvin cycle, an enzyme called RuBisCO facilitates the reaction between carbon dioxide and a compound called ribulose bisphosphate (RuBP). This reaction in combination with the energy and reducing power of ATP and NADPH results in the creation of Glyceraldehyde-3-phosphate (GA3P) molecules, thereby storing the energy from photosynthesis for the plant's use.
The Calvin cycle can be divided into three stages: fixation, reduction, and regeneration. With ATP and NADPH produced through light-dependent reactions of photosynthesis, CO2 is transformed into carbohydrates in a process that involves regeneration of RuBP. In summary, the Calvin cycle provides a method for plants to convert sunlight energy into chemical energy, which is stored in carbohydrate molecules and used for plant growth.
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All cells come from preexisting cells. a cell divides its dna in a process known as ____________ and its cytoplasmic contents in a process known as ____________ , producing two new daughter cells while all life begins as a single cell, the human body is not just one cell type. cells that can divide without becoming a specific cell type (i.e. skin cells) are known as ____________ . when stem cells undergo mitosis and divide, they produce two cells. one cell remains a stem cell and the other is a partially specialized cell known as a ____________ cell. cells undergo a process of specialization or determination called ____________ to become neurons, muscle cells, or skin cells. stem cells are the source of all different cell types.
A cell creates two new daughter cells by replicating its DNA (a process known as "replication") and dividing its cytoplasm (a process known as "cytokinesis"), respectively.
Though the human body is made up of many different types of cells, all life begins as a single cell. Stem cells are cells that have the capacity to divide without committing to a particular cell type (such as skin cells).
When stem cells divide through mitosis, they create two new cells. One cell continues to be a stem cell, and the other is a progenitor cell, which is a partially specialised cell.
Thus, to become neurons, muscle cells, or skin cells, cells go through a process of specialisation or determination called differentiation. All different types of cells are derived from stem cells.
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Final answer:
Cells replicate their DNA through mitosis and divide the cytoplasm by cytokinesis, resulting in two daughter cells. Stem cells can divide to produce more stem cells or differentiate to become progenitor cells, which further specialize through differentiation into various cell types.
Explanation:
All cells come from preexisting cells. A cell divides its DNA in a process known as mitosis and its cytoplasmic contents in a process known as cytokinesis, producing two new daughter cells. While all life begins as a single cell, the human body is composed of many different cell types. Cells that can divide without becoming a specific cell type, such as skin cells, are known as stem cells.
When stem cells undergo mitosis and divide, they produce two cells. One cell remains a stem cell and the other becomes a partially specialized cell known as a progenitor cell. Cells undergo a process of specialization or determination called differentiation to become neurons, muscle cells, or skin cells. Stem cells are the source of all different cell types in the body.
All cells come from preexisting cells. a cell divides its dna in a process known as ____________ and its cytoplasmic contents in a process known as ____________ , producing two new daughter cells while all life begins as a single cell, the human body is not just one cell type. cells that can divide without becoming a specific cell type (i.e. skin cells) are known as ____________ . when stem cells undergo mitosis and divide, they produce two cells. one cell remains a stem cell and the other is a partially specialized cell known as a ____________ cell. cells undergo a process of specialization or determination called ____________ to become neurons, muscle cells, or skin cells. stem cells are the source of all different cell types.
All cells come from preexisting cells. A cell divides its DNA in a process known as mitosis and its cytoplasmic contents in a process known as cytokinesis, producing two new daughter cells while all life begins as a single cell, the human body is not just one cell type. Cells that can divide without becoming a specific cell type (i.e. skin cells) are known as stem cells. When stem cells undergo mitosis and divide, they produce two cells. One cell remains a stem cell and the other is a partially specialized cell known as a progenitor cell. Cells undergo a process of specialization or determination called differentiation to become neurons, muscle cells, or skin cells. Stem cells are the source of all different cell types.
Which term best describes traits that are found on the x chromosome but not on the y chromosome?
Final answer:
X-linked traits are determined by genes on the X chromosome and are not present on the Y chromosome, leading to different inheritance patterns in males and females.
Explanation:
The term that best describes traits that are found on the X chromosome but not on the Y chromosome is X-linked traits. These traits are controlled by genes that are located only on the X chromosome. In human females, who have two X chromosomes (XX), these traits have a higher likelihood of being expressed. In contrast, human males, who have only one X chromosome paired with a Y chromosome (XY), can express these traits if the gene is present on their single X chromosome, leading to distinctive patterns of inheritance for X-linked traits.
X-linked traits can have significant implications for the expression of certain conditions, such as color blindness and hemophilia, which are more commonly observed in males due to the presence of only one X chromosome. The absence of a corresponding gene on the Y chromosome means that if a male inherits an X-linked recessive trait, he will express that trait since there's no dominant allele on the Y chromosome to mask the effect of the recessive allele on the X chromosome.
In low-nitrogen conditions UCYN-A participates ina mutualistic symbiotic relationship with other organisms in the microbial mat. predict the most likley typre of symbiotic relationship between UCYN-A and the other organisms in the microbial mat if nitrogen becomes readily available from another source. provide reasoning to support your prediction
Answer:
There are three distinct kinds of symbiotic associations, that is, commensalism, mutualism, and parasitism. In the given case, that is, when nitrogen becomes readily accessible from another source the UCYN-A will be in a parasitic relationship with other species and will be the obtaining food from them, as this species will not be able to perform the process of photosynthesis in order to generate its own food.
In the parasitic association, one organism, that is, the parasite feeds off of another organism, which is considered as the host, harming it and probably resulting in its death. The parasite thrives on or in the body of the host.
what is the formula for fermentation
The balanced chemical reaction for the fermentation of glucose is C6H12O6 → 2 C2H5OH + 2 CO2, converting one molecule of glucose into two molecules of ethanol and two molecules of carbon dioxide, a process essential in making bread and alcoholic beverages.
Explanation:Chemical Formula for Fermentation
The chemical process of fermentation involves the breakdown of sugars by yeast or bacteria under anaerobic (without oxygen) conditions. A common example of this biochemical process is the conversion of glucose (C6H12O6) into ethanol (C2H5OH) and carbon dioxide (CO2). The balanced chemical reaction for the fermentation of glucose can be represented as follows:
C6H12O6 → 2 C2H5OH + 2 CO2
Through this reaction, one molecule of glucose is converted into two molecules of ethanol and two molecules of carbon dioxide. This process is widely used in the production of alcoholic beverages such as wine and beer, and in baking to make bread dough rise.
The gene that causes sickle cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. this gene provides some protection from malaria, a serious disease that is wide-spread in sub-saharan africa. discuss an evolutionary process that could account for the different percentages among residents of the two regions.
What is structural adaptation
Answer:
physical changes in an organism in order to survive in a given environment
Explanation:
edmentum
The only property listed below that is not characteristic of gases is
Although brian has not gained weight recently, he remains slightly overweight. how many kcalories per gram does alcohol provide as a source of energy?
The answer is: Alcohol provides approximately 7 kcalories per gram.
Ethanol, a type of alcohol, is a source of energy for the human body, providing about 7 kilocalories (kcal) per gram.
Unlike essential nutrients, alcohol is not required for survival.
Carbohydrates and proteins each provide around 4 kcal per gram, while fats offer about 9 kcal per gram.
Consuming alcohol adds to total caloric intake.
The body prioritizes metabolizing alcohol over other macronutrients, as alcohol cannot be stored.
This metabolic priority can lead to fat accumulation from other sources if caloric intake surpasses energy expenditure.
Excessive caloric intake, including from alcohol, may contribute to weight management issues, such as being slightly overweight.
Moderation in alcohol consumption is crucial, and its caloric contribution should be factored into a balanced diet and healthy lifestyle.
Due to increasing concentrations of ddt as one moves up the food chain, cormorants and mergansers have about ______ times as much ddt residue as the background concentration in the water.
Biomagnification leads to a 400-fold increase in the concentration of DDT in birds like cormorants and mergansers compared to the background concentration in the water.
The question addresses the phenomenon of biomagnification, which refers to the increasing concentration of a substance, such as DDT, in the tissues of organisms at successive levels in a food chain. This process occurs because DDT is not metabolized or excreted efficiently by organisms, and therefore accumulates in their bodies, particularly in fat tissue. As smaller organisms that contain DDT are eaten by larger ones, the concentration increases.
Hence, apex predators and birds like cormorants and mergansers, which are higher up on the food chain, can have concentrations of DDT that are significantly higher than the background concentration in the water. In the case of birds feeding on fish that have accumulated DDT, it has been documented that they can have a 400-fold increase in the concentration of DDT.
Explain in a complete sentence why it is important for scientists to share information with one another.
Name 4 ways the human body protects itself
The Clean Air Act would be a reason for the Environmental Protection Agency (EPA) to regulate car emissions. Please select the best answer from the choices provided T F
The EPA is an independent agency formed for environmental protection. Hence the statement The Clean Air Act would be a reason for the Environmental Protection Agency (EPA) to regulate car emissions is true.
Car emissions are very harmful for all the living organisms in an environment.
Weather conditions would be LEAST likely to affect supply in
A.farming
B. fishing
C. technology
D. transportation
Answer:
c
Explanation:
TECHNOLOGY, weather can only affect supply if the components got damaged.
Look at the diagram of DNA below. Which of the following parts of the diagram represents the hydrogen bond that holds the two strands of DNA together?
[Key: yellow-A, green-T, red-G, blue-C]
Y-represents hydrogen bond
Explanation;DNA is a type of nucleic acid, that carries genetic information in organisms. DNA is made up of nucleotide bases; guanine, Cytosine, Adenine,l and Thymine, which are the building blocks of nucleic acids.Complementary base pairs of guanine with cytosine and adenine with Thymine between the DNA strands connect to each other using hydrogen bonds.Hydrogen bonds between the complementary nucleotides keeps the two strands of DNA helix together.When genes from different organisms are pieced together, _____.
a. this is referred to as transmorphic DNA
b. this is referred to as transgenic DNA
c. this is referred to as recombinant DNA
d. scientists can destroy the genes?
Recombinant DNA can be also re refers to as chimeric DNA and they created from the combination of two or more strands of DNA. Recombinant DNA involves the manipulation of genes in other to produce or attain a certain gene expression. Thus, combination of two different DNA is the most common process in recombinant DNA.
What is a likely evolutionary advantage of sexual reproduction over asexual reproduction? a sexual reproduction involves fewer steps. b there is a lower chance of using up the resources in a given environment. c sexual reproduction results in variation in the offspring. d sexual reproduction is more costeffective?
The primary evolutionary advantage of sexual reproduction over asexual reproduction is that it results in increased genetic diversity, providing advantages in changing environmental conditions.
Explanation:The most likely evolutionary advantage of sexual reproduction over asexual reproduction is the fact that sexual reproduction results in genetic diversity or variation among offspring. This variation allows populations to adapt to changing environments more quickly because it increases the probability that some individuals will have characteristics suited to the new conditions, thereby allowing the species to survive and reproduce. This contrasts with asexual reproduction, which results in offspring that are exact clones of the parent, thus less able to survive changes in the environment.
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