The leaves of a plant appear green because light waves are absorbed by the chlorophyll pigment.
Explanation:The leaves of a plant appear to be green because light waves are absorbed by the chlorophyll pigment in the plant cells. The chlorophyll molecules absorb the red and blue wavelengths of light and reflect the green wavelength, which is then detected by our eyes. Therefore, option B) absorbed is the correct answer.
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A scientist wants to study photosynthesis in a newly discovered species. Which of these cell strict should the scientist study ?
A-vacuoles
B-chloroplasts
C-mitochondria
D-ribosomes
A student constructs a Venn diagram to compare the organelles in plant and animal cells. Venn Diagram of Plant and Animal Cells mc026-1.jpg Which organelle should be listed under “Both” in the diagram? centriole mitochondrion chloroplast cell wall
The correct answer is option (B) mitochondrion.
A Venn diagram represents an illustration of relationship between two groups, showing the characteristics of the groups separately in two circles and the similarities shown in the intersecting region of the two circles. When a Venn diagram is constructed to compare the organelles in plant and animal cells, the organelle that should be listed under "both" in the diagram is the mitochondrion. Mitochondrion is a cell organelle that is the power house of the cell storing energy in the form of Adenosine triphosphate (ATP). It is present in both the plant and animal cells. It is made up of an outer membrane and an inner membrane with the inter membrane space, the cristae with the F1 particles and the mitochondrial matrix with proteins, enzymes, tRNA and the mitochondrial genome. Whereas centriole is present only in animal cell and chloroplast, cell wall are present only in plant cell.
Answer:
b
Explanation:
Reflect on all of the illnesses anna garcia has experienced. did any of her illnesses studied this year result in a breakdown of her body's ability to protect itself?
The illnesses of Anna Garcia had result in a breakdown of her body’s immune system that make her vulnerable to different infection. Her sickle cell disease and type 1 diabetes had made her weaker because the white blood cell that supposed to protect the body did not function properly and she often experienced fatigue and exhaustion because of low insulin. Due to these, she experienced urinary tract infection that made her more ill.
what does homozygous mean?
Point (-5, 5) lies in Quadrant I II III IV
In a graph, the quadrants are marked from the top right corner and goes anti-clockwise
Hence we will have (+,+) in the Quadrant I
(- , +) in quadrant II
(-,-) in quadrant III
and
(+,-) in quadrant IV
Now the given point (-5,5) is a (-,+) and hence it lies in the quadrant II
In liver cells, the inner mitochondrial membranes are about five times the area of the outer mitochondrial membranes. what purpose must this serve?
The larger area of the inner mitochondrial membrane accommodates the proteins and enzymes necessary for the oxidative phosphorylation process used to generate ATP, a key energy molecule. The increased surface area due to the complex folds, known as cristae, allows for increased ATP production, supporting the liver cell's high metabolic activity.
Explanation:The inner mitochondrial membranes in liver cells being about five times the area of the outer mitochondrial membranes serves a crucial function in energy production. The inner mitochondrial membranes house the proteins and enzymes necessary for oxidative phosphorylation, a process used by cells to generate ATP, which is a key energy molecule. The larger the area of the inner membrane, the more space there is for these proteins and enzymes to reside, hence the greater the capacity for ATP production.
Mitochondria, often described as the powerhouses of the cells, are the sites of cellular respiration, where biochemical processes of respiration and energy production occur. The complex folds of the inner mitochondrial membranes, known as cristae, increase the surface area, allowing for increased production of ATP. Therefore, this high ratio of inner to outer membrane area in the mitochondria of liver cells supports their high metabolic activity.
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Calcium is the only supplement proven to provide relief from pms and pmdd symptoms.
a. True
b. False
A student conducted an experiment to test the effect of the digestive enzyme pepsin on cooked egg white and potato in the presence of hydrochloric acid at a pH of 1. Which could be a probable inference? Pepsin digests egg white because it mainly contains protein. Pepsin digests potato because it mainly contains starch. Pepsin digests egg white because it mainly contains fat. NextReset
Alcohol __________.
a. is a known carcinogen
b. is technically not a carcinogen
c. is linked with significantly increased risk of lung and stomach cancer
d. does not increase the risk of esophageal cancer
How do the skin proteins—keratin, melanin, elastin, and collagen—each contribute to our physical identity? how about the dermal papillae?
Answer:
Skin is the largest organ of our body and it contains a lot of immune barriers that protects the pathogens form entering the skin. Majorly the nature of skin also helps in the external appearance of a person and also denotes age.
The skin protein such as keratin, melanin, elastin, and collagen are extracellular matrix proteins that plays a major role in maintaining the elasticity and texture of the skin. The dermal papillae is the region that is present in the outer most layer of the skin that helps in the formation of hair follicles.
A puggle is a type of dog first produced by mating two other types of dog a pug and a beagle what is that process
The process of mating two different breeds of dogs to create a new breed is called crossbreeding or designer breeding. The characteristics of the resulting puppies can vary depending on the genetic traits inherited from each parent breed.
What is Crossbreeding?Crossbreeding is the deliberate breeding of two different breeds of dogs to create offspring that possess desirable traits from both parent breeds.
The goal of crossbreeding is to produce a new breed that has the desirable traits of both parent breeds, such as appearance, temperament, or working ability.
In the case of a puggle, which is a mix of a pug and a beagle, the breeding process involves mating a purebred pug with a purebred beagle to produce a litter of hybrid puppies that inherit traits from both parent breeds.
It's important to note that while crossbreeding can be a way to create a unique and desirable breed, it is also controversial and has faced criticism from some animal welfare advocates.
Crossbreeding can lead to a variety of health problems, particularly when the parents have significant differences in size or structure.
Therefore, responsible breeding practices are important to ensure the health and well-being of the parent dogs and their offspring.
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The production of a puggle from mating a pug and a beagle is known as intentional breeding or artificial selection. Similar to how a cockapoo is bred from a poodle and a cocker spaniel, this process involves selecting parents with desirable traits. It is a human-driven practice that has led to a wide variety of dog breeds.
When a puggle is created by mating a pug and a beagle, it is an example of intentional breeding or artificial selection. This process involves choosing two different breeds with desirable traits to produce a new breed that exhibits a combination of these traits. Similarly, the breeding of a poodle and a cocker spaniel results in a breed known as the cockapoo.
This form of breeding occurs when humans intervene in the selection process, which has been practiced throughout history to create an array of domesticated animals with certain characteristics. While different dog breeds can interbreed to create hybrid dogs like the puggle and cockapoo, it's important to note that different species, such as the bald eagle and African fish eagle, may produce infertile hybrids due to incompatible genes that control development.
The creation of different dog breeds has largely been influenced by human activity, particularly through kennel clubs and dog shows which began in Victorian England. The American Kennel Club (AKC) continues to recognize new breeds, demonstrating the ongoing evolution and development of dog breeds under human influence.
When you exhale, air passes through the respiratory structures in which order? A) alveolus, trachea, bronchus, bronchiole, larynx, pharynx, nasal cavity B) alveolus, bronchus, bronchiole, trachea, larynx, pharynx, nasal cavity C) alveolus, bronchiole, bronchus, trachea, larynx, pharynx, nasal cavity D) alveolus, trachea, bronchus, bronchiole, pharynx, larynx, nasal cavity
Exhale (breathe out) is the reverse process of inhaling (breathe in). Thus, the air goes through the bronchioles, out the bronchi, out the trachea, larynx, pharynx and finally out through your mouth and nose. Exhaled air contains wastes and carbon dioxide and it's warm.
Answer:
c
Explanation:
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In which kingdom are an overwhelming majority of its individuals producers? A) Animalia B) Fungi C) Insecta D) Plantae
This is a is a natural substance that cannot be re-made, re-grown, or regenerated as fast as it is used.
The major form of fat in both food and the body is
Match each hormone with the description of what would happen if it was absent in a pubescent male. not all labels will be used.
Understand the hepatic portal system. be able to trace how the blood from the intestinal organs is taken to the liver, filtered and then back into the general circulation. (know the proper order using: sinusoids, hepatic portal veins, hepatic artery, hepatic veins, central veins, inferior vena cava) be able to place these in their correct order
An adolescent growth spurt occurs only in boys.
a. True
b. False
The correct answer is B. False
Explanation:
In development, a growth spurt refers to a period of time in which individuals experience rapid growth or development. In the case of an adolescent growth spurt, this is a natural process that occurs to all individuals including boys and girls during puberty. This takes place because during adolescence the hormone levels change and this leads to rapid growth as well as development or maturation of bones, muscle and the sexual or reproductive system. According to this, it is false an adolescent growth spurt occurs only in boys because this is a natural process that occurs on both girls and boys.
What agent of erosion creates a cirque?
Describe one common role of both bacteria and fungi in the movement of energy and matter in ecosystems. (b) describe how analyzing the data from the treatment group sprayed with water only will increase the validity of the experimental results.
What is the whisker length of a sea lion with the two-locus genotype aabb?
Which of the following is an example of a nonspecific immune response?
A.
The receptors of a B lymphocyte bind to an antigen.
B.
A T lymphocyte attacks and destroys a cancer cell.
C.
A plasma cell releases antibodies.
D.
A macrophage engulfs invading bacteria.
Answer:
A macrophage engulfs invading bacteria.
Explanation:
A nonspecific immune response is the body's first line of defense against invaders. It is a general immune response that requires no prior memory of the pathogen. A macrophage engulfing invading bacteria is an example of a nonspecific immune response.
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Which group of living things can move energy from consumers at the top of an energy pyramid back to producers at the bottom? *
A. decomposers
B. producers
C. consumers
D. Nothing can move energy back to the bottom of an energy pyramid.
Which would have the GREATEST effect on the rate of photosynthesis in a plant?
Answer: Low level of carbon dioxide, low temperature due to lack of sunlight will affect the process of photosynthesis.
Explanation:
The photosynthesis can be defined as the process by which autotrophs make their own food in the presence of sunlight with the help of carbon dioxide, water and other nutrients presents in soil.
If there will be inadequate amount of sunlight, or low level of carbon dioxide then the rate of photosynthesis will decrease.
A randomized experiment was performed to determine whether two fertilizers
In my research, i found that the levels of "gonadotropins" in the body are critical to understanding how the drugs clomid and ortho tri-cyclen work. what are gonadotropins? what structure releases them? (2)
Answer:
Gonadotropins are polypeptide hormones and are secreted by the anterior pituitary gland.
Explanation:
Hypothalamus releases GnRH i.e gonadotropin releasing hormone which stimulates the anterior pituitary to secrete gonadotrophs such as FSH, ICSH and LH.
FSH (follicle stimulating hormone): In males it stimulates spermatogenesis. In females it stimulates growth of ovarian follicles.
ICSH (Interstitial cell stimulating hormone): In males, secretion of testosterone.
LH (Luteinising hormone): In femalestogether with FSH, it triggers ovulation, stimulates conversion of broken ovarian follicle into corpus luteum.
I believe the gonadotropins are hormones secreted by the gonads and are released by the testes and ovaries.
Explanation:Gonadotropins are a group of hormones secreted by the female and male reproductive system. The organs that produce are Testes and Ovaries. The hormones are released due to action of another polypetide hormone called the gonadotropin releasing hormone that stimulates the male gonads (testis) to produce the steroid hormone called testosterone and the female gonads (ovaries) to produce estrogen.
Further Explanation:All the gonadotropin hormones are steroid in nature and they are lipophilic hence they can pass through the lipid bilayer of the cell membrane and cause a change in the gene expression inside the nucleus of the target cell. Control of these hormones is via the Hypothalamus Pituitary Gonadal (HPG) axis and the Hypothalamus Pituitary Adrenal (HPA) axis. The steroid hormone testosterone can also be produced by the adrenal cortex of the adrenal gland in the topmost layer called the zona glomerulosa. The drugs clomid and ortho tri-cyclen target the these to axes in order to produce the desired response.
Clomid acts on the female HPG axis by acting on specific estrogen receptors in the hypothalamus where it has a negative feedback mechanism on the release of gonadotropin releasing hormone thus impacting the production of gonadotropic hormones through upregulation.
ortho tri-cyclen is an oral contraceptive that inhibits ovuating by acting on the female HPG axis where it has a negative feedback mechanism on the hormone Follicle Stimulating Hormone. It inhibits the FSH hormone production in the anterior pituitary gland meaning there will be no maturation of the ovarian follicle into the graafian follicle which will produce the hormone estrogen necessary for the thickening of the endometrial layer of the uterus. Inhibitin estrogen production also means that it will prevent the cervical mucus from becoming thin in order to allow the passage of sperms during sexual intercourse.
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Level: High School
Subject: Biology
Topic: Reproduction
when you move your fingers to type a text message you are using motor neurons of the
A _____ locates all or most of the processing logic on the server. select one:
a. thin client
b. portal client
c. batch client
d. topological client
Toddlers should consume ________ milligrams of calcium per day.
The answer is 700 milligrams needed toddlers should consume per day. Children need enough calcium to support their growing bones and teeth. Calcium is one of the body's most essential minerals and also has other necessary roles to play, including supporting a healthy nervous system and muscle function.
If the sequence of a nontemplate strand of dna is 5'-accgcatccgagtcac-3' what is the sequence of the transcript?