identify each of the cell structures indicated in figure 7-7 and explain its role in the cell. Be sure to indicate the letter that corresponds with each structure
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A. Nucleus envelope.
Used in regulation of macromolecules like proteins and mRNA but permits water, ions and ATP into the nucleus.
B. Cytoplasm
This is an environment for other organelles and is location for many metabolic processes.
C. Endoplasmic reticulum
Used for transport of materials , proteins and lipid synthesis.
D. Nucleus
Acts as repository for genetic information, control center of the cell.
E. Nucleoplasm
provides environment for nucleotides, enzymes and chromosomes.
F. Mitochondrion
For energy production through use of tricarboxylic acid cycle and electron transport chain among others.
G. Golgi apparatus
Packaging and secretion of materials for various purposes.
H. Secretory vesicles
Transport of materials, enzyme storage and also involved in metabolism.
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in a particular flowering plant species, orange flower color trait has simple dominance over the yellow flower color trait. in a population that is in hardy-weinberg equilibrium for that trait, sixteen percent of a population show yellow-flower phenotypes. what percent of the population is heterozygous for the flower color alleles?
1. Which statement best describes the effects on an organism whentheir environment changes?O Some changes to an organism have helpful effects and some have harmfuleffects.Changes to an organism's environment often have no effect on the organism.All changes to an organism's environment are harmful.All changes to an organism's environment are helpful.
Answers
Final answer:
Stomata, found mainly on the underside of plant leaves, absorb essential carbon dioxide for photosynthesis and control the plant's water balance through transpiration.
Explanation:
The stomata on plant leaves play a crucial role in the process of photosynthesis, which is how plants make their food. They are small openings or pores, primarily found on the underside of a leaf. Through these stomata, a plant absorbs carbon dioxide from the atmosphere which is essential for photosynthesis. Moreover, the stomata also control a plant's water balance through a process called transpiration. During transpiration, water vapor exits the plant via the stomata.
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Answer;
Free Space Path Loss
The Free Space Path Loss in a bridged network will be the source of the greatest loss in the transmission.
Explanation;
-Free-space path loss (FSPL) is the loss in signal strength of an electromagnetic wave that would result from a line-of-sight path through free space (usually air), with no obstacles nearby to cause reflection or diffraction.
-Free-space path loss is proportional to the square of the distance between the transmitter and receiver, and also proportional to the square of the frequency of the radio signal. This value is usually calculated by discounting any obstacles or reflections that might occur in its path.
Final answer:
The network bridge can be the source of the greatest loss in a network's transmission. It can cause delays due to processing times and data queueing. However, impacts are usually minute and can be mitigated with advanced technologies.
Explanation:
In a bridged network, the source of the greatest loss in transmission can generally be attributed to the network bridge itself. This is because the network bridge operates by receiving, processing, and forwarding data from one network segment to others. During this process, the bridge may produce delays, also known as latency. This latency is caused by factors like processing times and data queueing, which could potentially result in a loss in transmission.
The impact of this loss is usually minute and almost imperceptible in smaller networks but can become more significant as the size and complexity of the network increase. Bridging technologies have evolved significantly to mitigate this impact, for example, by using intelligent forwarding algorithms and advanced hardware capabilities.
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B. absorb bilirubin
C. synthesize vitamin K and B-complex vitamins
D. synthesize vitamins C and D
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Answer:
Biology
Explanation:
Study of various organ systems including the endocrine system of human provided information about the role of insulin hormone in the regulation of blood sugar level. It elucidated the role of insulin in the development of diabetes.
Once information about the causes of the diabetes was obtained, the development of methods of its treatment became possible by targeting the regulation of normal insulin level in the body. This is how the study of biology helped in the development of treatment and medicines for disease such as diabetes.