Which is true regarding the mediated transport of a substance across a plasma membrane? it depends upon the binding of that substance to a specific site on the membrane protein. it depends upon movement of proteins from one side of the membrane to the other. it always increases in direct proportion to the increasing concentration of the substance on one side of the membrane. both "depends upon the binding of that substance to a specific site on the membrane protein" and "depends upon movement of proteins from one side of the membrane to the other" are correct. all of the choices are correct?
What advantage would there be for an organism to be able to turn on or off particular genes in response to certain conditions?
Answer:
Adapting to the surrounding/environment by turning on/off particular genes could be very both beneficial and disadvantageous. A big disadvantage could be that the organism mis using up a lot of energy and materials to produce a protein that is no longer needed. On the other hand, if you have the arabinose sugar present, the growth can be beneficial towards the sugar source.
Explanation:
Why do we need carrier proteins for steroid hormones?
Patient presents with a suspicious lesion on her left arm. with the patient's permission the physician marked the area for excision. the margins and lesion measured a total of 0.9 cm. the wound measuring 1.2 cm was closed in layers using 4-0 monocryl and 5-0 prolene. pathology later reported the lesion to be a sebaceous cyst. what codes are reported?
The lesion on her left arm is coded as 11401-51 based on the location and size. In addition, the wound was closed in layers allowing for intermediary closure was coded as 12031 based also on location and size. Moreover, sebaceous cyst falls under 706.2 based in the ICD-9-CM Index.
Identify two reasons it would be beneficial to boost intake of α-linolenic acids in relation to linoleic acids
Being an omega-3—fatty acid, Alpha-linolenic acid, has numerous benefits; it reduces inflammatory bowel disorders and cardiovascular disorders. Linoleic acid, on the other hand, is an Omega-6-fatty acid that is required in small amounts. High intake of linoleic acids causes health detriments such as chronic inflammation. The ratio of omega-6 to omega -3 should, therefore, be lower, ideally 1.5:1.
Boosting ALA intake can help balance omega-3 and omega-6 fatty acid levels and offer various health benefits, as ALA is converted to vital compounds like EPA and DHA and is found in nutrient-rich foods.
Boosting the intake of
alpha-linolenic acid (ALA), an omega-3 fatty acid, in relation to linoleic acid, an omega-6 fatty acid, can be beneficial for several reasons.
Water present in soil is drawn by the roots of a plant through the xylem to the leaves of the plant. Plants like the large sequoia tree can draw water from the roots to the highest leaves almost 310 feet high without any pumping mechanism in the plant.
Which explanation best describes how this process is possible?
What is a secure chemical landfill? A. a landfill in an area of nonporous bedrock B. a biological treatment plant for liquid waste C. a landfill that is completely full and closed D. a guarded, fenced, and locked landfill
The correct answer is option A, that is, a landfill in the region of nonporous bedrock.
A permanent waste disposal facility where the wastes are put into the ground and covered with a layer of plastic, soil, or both is known a landfill. A secure chemical landfill refers to a landfill developed in the region of nonporous bedrock.
A secure chemical landfill is a prudently engineered depression in the ground or constructed on the top of the ground, signifying a football stadium into which wastes are dumped. The objective is to inhibit any water-related or hydraulic association between the surrounding environment and the wastes, mainly groundwater.
Answer:
a landfill in an area of nonporous bedrock
Explanation:
In the United States, unwise land-use practices lead to annual losses of topsoil by wind and water totaling _____.
Answer:
4 Billion Metric tons
Explanation:
Mismanagement of arable land is a major factor that leads to the loss of top fertile soil layer that can support the growth and development of crop plants. The studies have reported that unwise land-use practices lead to annual losses of topsoil by wind and water totaling 4 Billion Metric tons.
Therefore, there is alot of focus now adays on conservation of soil and arable land that can also prevent soil erosion and help in growth of more crops and increase agricultural productivity.
Studies have also reported that proper management practices of soil can help in lowering the soil erosion by 100 to 5 tonnes/ hectare/year.
In the promotion of this efforts, during 1930s there were 220 million trees planted in United States as a strategy to lower soil erosion due to water and wind.
Hope it help!
Answer:
in the United states unwise land use practices lead to annual losses of topsoil by wind and water totaling
In the uvr excision repair system in
e. coli, which enzyme recruits uvrc
Tryptophan is an amino acid necessary for
e. coli survival and growth.
e. coli contain genes coding for enzymes that synthesize tryptophan. these genes are grouped together on a segment of dna called the tryptophan (trp) operon. cells can use these enzymes to synthesize tryptophan when it is not present in the environment. however, when tryptophan is already present in the environment, cellular resources are shifted away from manufacturing the enzymes for tryptophan synthesis. tryptophan binds with and activates the trp repressor, which then binds to the trp promoter and blocks rna polymerase. blocking rna polymerase decreases the normal transcription rate of the operon. what type of regulation does the trp operon exhibit?
A patient with a neurodegenerative disease shows degeneration of the ___________, making them more likely to forget a(n) _________________ event.
Polycystic Ovary Syndrome (PCOS) is a condition characterized by excessive estrogen. The model shows the effects on the eggs in the ovaries. Based on what you see in the model, what symptoms would you expect a woman with PCOS to have?
Answer:
Fewer menstrual cycles.
Explanation:
The formation of cysts inhibits ovulation, decreasing the release of hormones necessary for menstrual cycles.
PLATO answer
The production of pink flowered plants from a cross between a red flowered plant and a white flowered plant is an example of A) multiple alleles. B) complete dominance. C) incomplete dominance. D) codominant inheritance.
Answer
The production of pink flowered plants from a cross between a red flowered plant and a white flowered plant is an example of C. incomplete dominance
Explanation
Incomplete dominance is a type of intermediate inheritance that occurs when one allele for a particular characteristic is not completely expressed over its paired allele. The phenotype that is formed will have a physical trait which combines the phenotype of both the alleles. In this example, the pink flowered plant is the resultant phenotype which is different from the paired allele in the red flowered plant and white flowered plant.
what is the connection between the different structures ferns use to reproduce?
A. The fertilize egg produces spores.
B. The eggs are fertilized by the spores.
C. The spores grow into new individuals by asexual reproduction.
D. The spores grow into male and female gametophytes that produce eggs and sperm
The answer is D. In the alternation of generation by plants and algae, gametophyte phase is the haploid phase. The gametophyte sprouts from spores that are produced by sporophytes. The gametophyte produces gametes that fuse to form a zygote. The zygote grows into a prothallus that represents the short diploid phase in ferns
Which of the following factors do you think can affect the size and structure of a population?
the number of individuals who enter a population
the number of individuals who exit a population
limitation of resources
natural events
human activity
Answer:
I reckon the most appropriate one is limitation of resources
The koala is an animal native to Australia. Despite the popular name, koala bear, they aren't bears, but marsupials like kangaroos, that keep their newborns in a stomach pouch.
They have developed very differently than other marsupials, in part because they spend most of their lives in the eucalyptus trees that serve as their main source of food.
What adaptation helps them lead this tree bound life?
A) The use of pouches to hold koala newborns.
B) Grey fur that keeps them hidden from predators.
C) Hands, feet, and claws that are perfect for gripping branches.
D) Distinct calls they use to communicate potential danger to one another.
The answer to this question is C).
The Doppler effect indicates that the universe is expanding because_____
A. Light from other galaxies is the same color
B. Light from other galaxies is different colors
C. Light from other galaxies is blue shifted
D. Light from other galaxies is red shifted
The answer is:
D.Light from other galaxies is red shifted i took the k12 test
Which is not a disease contracted through contaminated water?
A.schistosomiasis
B.pneumonia
C.typhoid
Monkey's (new world) and primates (old world) have distinctly different vision. most monkey's have dichromatic vision, while primates have trichromatic vision.
a. what kind of mutation occurred in the primate lineage to allow the primates to have an extra opsin gene.
Duplication of an ancestral opsin gene occurred in the primate lineage (Old World primates) and subsequent mutations in the new copy resulted in two types of opsin, instead of just one.
Opsins are a group of light-sensitive proteins found in photoreceptor cells (cone cells) of the retina and they are the primary photopigments in primate eyes. Opsins are involved in vision, mediating the conversion of a photon of light into an electrochemical signal, the first step in the visual transduction cascade.
The difference in colour vision between New and Old World primates results from differing arrangements of the photopigment genes on the X chromosome. In Old World primates the three photopigments are required for trichromatic colour vision and they are encoded by two or more X-chromosome photopigment genes and an autosomal photopigment gene. New World monkeys typically have only one X-chromosome pigment gene.
Primates have trichromatic vision and an extra opsin gene that allows them to see a wide range of colors, unlike most other mammals.
Explanation:Primates have trichromatic vision, which means they have three types of cones in their eyes that allow them to see a wide range of colors. This is in contrast to most other mammals, including monkeys, which have dichromatic vision with only two types of cones. The mutation that occurred in the primate lineage to allow them to have an extra opsin gene is called opsin gene duplication.
In photosynthesis, the electron that travels through the electron transport chain in the thylakoid membrane comes from _____ . In cellular respiration, a molecule of _____ supplies the electron that travels through the electron transport chain.
1.
A. ATP
B. Carbon Dioxide
C. Water
D. NADH
2.
A. ATP
B. Carbon Dioxide
C. Water
D. NADH
1. OPTION C
2. OPTION D
In photosynthesis, the electron that travels through the electron transport chain comes from Water. In cellular respiration, the electron comes from NADH.
Explanation:In photosynthesis, the electron that travels through the electron transport chain in the thylakoid membrane comes from Water (C). This process happens in the chloroplasts of plant cells, where light energy is used to break down water molecules, releasing electrons in the process. These high-energy electrons then move through the electron transport chain, contributing to the production of NADPH and ATP, the energy carriers in photosynthesis.
On the other hand, in cellular respiration, a molecule of NADH (D) supplies the electron that travels through the electron transport chain. This process happens in the mitochondria of cells. NADH is an electron carrier produced in the Krebs Cycle, and donates its high-energy electrons to the electron transport chain, leading to the generation of ATP, the cell’s energy currency.
Learn more about Photosynthesis and Cellular Respiration here:https://brainly.com/question/29771613
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where did the carbon in living hings come
Sediment can be carried by
1- wind only
2-water
3-water or ice only
4- wind, water or ice
You are assessing sigred for metabolic syndrome. whihc of parameters is indicitive of this syndrome?
Frederick engels proposed that patriarchy developed in conjunction with ________.
Answer:
with the development of private property.
Explanation:
Oppression of women fits into the history of class struggle and has material foundations. In 1884, the German revolutionary Friedrich Engels stated, in his book "The Origin of Family, Private Property and the State", that oppression of women has an origin, that is, that did not always exist, based on the studies of his comrade Karl Marx, also a German revolutionary.
In this book, Engels stated that women's oppression is marked by patriarchy, patriarchy in turn, develops along with the concept of private property. According to Engels, the advent of private property has led to profound social transformations and antagonisms in relations that previously took place without a hierarchy of values. Man has accumulated wealth and power, elevating his position in the social spheres of life production to a "higher" status, while women's lives have been relegated to private spheres and undervalued domestic work. We are then facing patriarchy, the form of oppression and confinement of women in relation to men.
Which physical feature supports the diagnosis of cushing syndrome?
Cushing's syndrome is characterized by a 'moon face' and abnormal weight gain, among other symptoms, and is often caused by a pituitary tumor leading to excess cortisol production.
Explanation:A physical feature that supports the diagnosis of Cushing's syndrome is the characteristic moon face, where there is an abnormal fat distribution that gives the face a rounded appearance. Other symptoms of Cushing's syndrome include abnormal weight gain, particularly in the neck and trunk, which is sometimes referred to as a buffalo hump. Additionally, patients may exhibit symptoms such as high blood glucose levels, obesity, slow growth, weak muscles, bone pain, and fatigue. A common cause of Cushing's syndrome is a pituitary tumor, leading to overproduction of the hormone cortisol. Treatment options for Cushing's syndrome aim at reducing excessive cortisol levels and can include surgery, radiation therapy, or medication.
What is the sequence of nursing actions to assess 4th degree perineal laceration?
How are organelles in a cell like organs in a human body?
Answer:
The organelles in a cell are like organs in a human body. This is because organs in a human body help the whole body operate as one smooth function like a cell has many different organelles that help carry out important processes for the cell to run smoothly as one organ. Organs in a body and organelles in a cell both depend on each other to function work together to keep things alive.
Which allele combination represents a male who has an x-linked recessive disorder
Answer: A
Explanation: Brainly LOL
Should food be genetically modified argument essay
Products that contain magnesium hydroxide frequently cause __________.