Answer: C. the total amount of air that can be inspired after a tidal expiration.
Explanation:
The inspiratory capacity can be define as the highest volume of the air that can be inspired after the expiration. It is the sum of the the inspiratory reserve volume and tidal volume.
The tidal volume is the measure of the amount of air inspired and expired during the process of normal breathing. This includes the volume of around one to half liter. The expiratory reserve volume is the additional air which is exhaled after normal exhalation.
D. fiber, omega-6 fatty acids
Answer: Stratified
Explanation:
The stratified sampling can be defined as the sampling from the population which is partitioned or divided into many parts.
Here, the lady has divided her day into three parts morning, afternoon and evening.
This is a way which is used to take sample randomly from the population. therefore, Keri took 4 random sample from each part of the day.
This is a type of stratified sampling.
Answer: Eating excessive quantities of such molecules could deregulate this process, increasing methylation and repressing the expression of genes that should normally be expressed.
Explanation:
DNA methylation is one of the epigenetic mechanisms involved in the regulation of gene expression, because it is a process by which methyl groups are added to DNA.
Methylation then modifies the function of DNA when it is found in the promoter gene, it is essential for normal development and is associated with a number of key processes, including genomic imprinting, inactivation of the X chromosome, repression of repeating elements, aging, and carcinogenesis. Usually, <u>it acts to suppress gene transcription.</u>
For example, folic acid is essential for the rapid cell division that occurs during early fetal development and it also plays an important role in methylation and thus in gene regulation. <u>The metabolism of these vitamins is aimed at achieving adequate levels of DNA methylation, necessary for the cellular processes</u>. Eating excessive quantities of such molecules could deregulate this process, <u>increasing methylation and repressing the expression of genes that should normally be expressed</u>.
Answer:
It's C. Plants produce oxygen and nutrients via a process known as photosynthesis using water and carbon dioxide
