Sometimes the most practical way to do an experiment is not to perform it in an animal, but to look at cell responses in culture. Cells from mice, humans, and other mammals have been used to establish cell culture lines that have been very important for research. You are studying a novel water-soluble mouse hormone. You know cell culture can be a practical model to reveal protein function, so you apply the hormone to yeast cells, but nothing happens. What is a likely explanation for why nothing happened in your experiment

Answer:

Yeast cells likely do not have receptors that bind to this specific water-soluble mouse hormone

Explanation:

Receptors are molecules capable of binding specific signaling molecules (i.e., ligands). For example, steroid receptors can only bind to specific steroid hormones (e.g. estrogen, progesterone). Plasma membrane receptors are protein receptors that bind to water-soluble ligands. These receptors are embedded in the cell plasma membrane and usually contain several transmembrane domains. Examples of cell membrane receptors include G protein-coupled receptors (GPCRs), enzyme-linked protein receptors and ion channel receptors.

Which of the following is the primary method of controlling citrus canker?


quarantine and destruction of infected plants

treatment with fungicides

genetic modification of plant stock

treatment with herbicides

Which would make for a weak claim?
• a blog cited as the source
• a large sample size
• clear variables and controls
• multiple trials

How are gymnosperms in category gnetophyta usually pollinated?

A. by wind

B. by hand

C. by insects

D. by water

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Question
Use the text to identify the sentences with evidence that matches the claim.

Claim 1 --> Tropical rainforests contain more biodiversity than all other biomes.

1) Biodiversity refers to the total number of different species of all kinds living in an area.

2) Tropical rainforests have many of the climate characteristics that organisms of different species need to grow, such as warm temperatures, plenty of rain, and many food sources.

3) There are large amounts of daily sunlight, which provides a great deal of energy to a variety of rainforest organisms.

4) Surprisingly, rain forest soil is very poor.

5) Due to the large amounts of rainfall, nutrients are leached out of the soil quickly.

6) Warm temperatures cause dead organisms to decay quickly, and the nutrients are then used by many different plants.


1, 2, 5
1, 2, 5

1, 3, 4
1, 3, 4

2, 3, 6
2, 3, 6

1, 4, 5

what is force? pls answer my question ​

Which process allows a bacterium to take DNA from its environment and add it to its own genome?

If the results of an experiment are considered valid they will? A. Give the same nontestable results B. Give The same outcome when repeated C. Give different outcomes in different parts of the world D. give different results from repeated by different scientist

which of the following are human activities that can negatively impact ecosystems.

A dependent variable is:

Frequently, a group of related species will each have a unique courtship ritual that must be performed correctly for both partners to be willing to mate. Such a ritual constitutes a ________ ________ reproductive barrier. Group of answer choices

Which of the following terms is a comparison between the number of copies
of a particular allele and the number of copies of that gene?
A. Allele dominance
B. Allele frequency
C. Allele density
O D. Allele strength
SUBMIT

Soil moisture influences both hydrological and agricultural processes and is part of the water and energy cycles through ________.

transpiration
evapotranspiration
evaporation
condensation

perfect 2 minute speech on deforstation

Which of the groups below has suffered the greatest percentage of species extinctions since 1600 (A) birds, (B) fishes, (C) mammals, (D) reptiles

The organs in the human body perform specific functions for survival.

Organ A delivers blood to the body
Organ B delivers oxygen to the body
Organ C delivers messages to the body

Which of the following correctly identifies the organs that perform each function above?

Organ A is the heart, Organ B is the brain, and Organ C is the lungs
Organ A is the heart, Organ B is the lungs, and Organ C is the brain
Organ A is the lungs, Organ B is the brain, and Organ C is the heart
Organ A is the lungs, Organ B is the heart, and Organ C is the brain

Which molecules in your body do
not contain carbon atoms?
Genes, which are made of DNA
Proteins
Sugars
Water

Select all that apply.
Which conditions relate to the research of van Helmont?
plant mass related only to soil
conclusions partly correct
demonstrated plant food from soil
conducted around 1400 AD.
plant mass related to H 20

what is tissue A called? ​

The graph shows the supply and consumption of forests when the
consumption rate and population growth rate are both low.
When does consumption begin to surpass supply?

how do plants use carbon dioxide
A.They release it as waste
B.To build proteins
C.They store it as fuel in limestone deposits
D.To produce sugars

que es la iniciación de un cultivo

An ecosystem experiences a loss of denitrifying prokaryotes. Will this loss affect the health of the ecosystem?

What causes an ionic bond to form between sodium and chlorine?

Do populations of different species of birds that live in the same community compete? Explain.

Please help me

como se llama el primer cartílago de la tráquea

give a short introduction of carl von linnaues and rh whittakers regarding classification of living beings one major point​

3. Which of the following most accurately represents the various feeding relationships within an ecosystem?
O A. A biomass pyramid
O B. A food chain
O C. A feeding diagram
OD. A food web

ASAP Determine whether the statement is true or false and why. “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to a different period in time becoming more human-like the closer to the present they are, showing a clear evolution into humans.”
A. False, it should read “We have discovered no series of humanoid fossils that are similar to humans, showing a clear lack of any transitional fossils as evidence of human evolution”
B. True
C. False, it should read “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to a different period in time becoming less human-like the closer to the present they are, showing a clear evolution away from humans.”
D. False, it should read “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to the same period in time, showing that many human-like species existed at once, but all went extinct.”

list and explain the advantages of 5 farming systems
​

You observe a cell in a stained section of connective tissue. The cell has an indented nucleus and obvious cytoplasmic granules. Upon further testing, you determine that the granules contain histamine. This cell is most likely a(n) _____. Multiple choice question. mature neutrophil mast cell eosinophil B cell