Which of the following is true about the speed of light?O it is a constant when the light is traveling in a vacuum.
O It speeds up or slows down depending on the observer.
O It is slowest in a vacuum.
O lt varies depending on the color of the light.

Answers

Answer 1
Answer:

Answer:

It is a constant when the light is traveling in a vacuum.

Explanation:


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Condensation of water droplets causes the formation ofA. rainB. lakesC. cloudsD. water vapor
Aristotle's ladder of nature, and the Great Chain of Being, were concepts suggesting __________. a) life evolved on other worlds and was later transported to Earth down a celestial ladder b) the accurate evolutionary view that all species are related, with each providing an evolutionary link (i.e. step in the ladder) to its immediate ancestor c) the mystical teleological view that all species were created in a fixed order, from least to most perfect d) life is a painful and purposeless experience of endless steps, but death brings release from the ladder of life
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Calculate the mutation rate for achondroplasia, and express the rate as the number of mutant genes per given number of gametes.

Answers

Answer:

Explanation below

Explanation:

Mutation can be described or explained as a situation whereby there is a change in the make up of a gene thereby resulting to the formation of an entire gene which will be responsible for a new character.

The rate of mutation could be fast or slow, and that is referred to as the mutation rate.

The mutation rate for achondroplasia can be calculated by determining the number of new cases of the condition divided by the number of gametes produced in a given population. It is typically expressed as the number of mutant genes per given number of gametes. An example is provided to demonstrate how to calculate the mutation rate.

Calculating the mutation rate for achondroplasia

The mutation rate for achondroplasia can be calculated by determining the number of new cases of the condition divided by the number of gametes produced in a given population. Achondroplasia is caused by a mutation in the FGFR3 gene, and it is typically inherited as an autosomal dominant disorder. Therefore, the mutation rate can be expressed as the number of new mutant genes per given number of gametes.

Example:

If there are 100 new cases of achondroplasia in a population of 1,000,000 people, and each person produces an average of 1000 gametes, the mutation rate would be calculated as:

Mutation rate = (100/1,000,000) / (1000 x 1,000,000) = 0.0000001

So, the mutation rate for achondroplasia in this example would be 0.0000001, or 1 in 10 million gametes.

Learn more about Mutation rate for achondroplasia here:

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What do etc mean in biology

Answers

Answer:

Electron transport chain

Explanation:

Electron transport chain

Answer:

Electron transport chain

Explanation:

Which of the following types of cells can directly kill cells and secretes a chemical known as perforin which accomplishes the killing by producing pore-like openings in the membranes of cells?a. Cytotoxic T cells
b. Helper T cells
c. Antibodies
d. Natural killer cells

Answers

Answer:

Cytotoxic T cells

Explanation:

Perforin is the cytosolic protein and upon degranulation forms pores in the target cell. Perforin protein helps in the transport of water and ions.

Perforin is present in the granules of cytotoxic T cells. These cells have the ability to kill virus infected cells and cancer cells. Cytotoxic T cells bind with the class 1 MHC molecules. These cells are also known as CD8+ T cells.

Thus, the correct answer is option (A).

Please select the word from the list that best fits the definitionwhere the energy in food is stored until it is released

Answers

Answer:

The correct answer is - Mitochondria.

Explanation:

Mitochondria is the location that stores the energy in food until it is released. It is the cellular organelle that is the place where the cellular respiration process takes place.

In this organelle, the stored food is converted into a usable energy form, ATP. Mitochondria is also known as the powerhouse of the cell as it converts and releases the energy from the stored sugar or food.

Thus, the correct answer is - mitochondria.

What form of energy is apded to make photosynthesis happen?O A. Chemical energy
O B. Solar energy
O C. Electron energy
O D. Proton energy
please help ASAP !!

Answers

Answer-B solar energy. the plants use the sun’s light to make photosynthesis sun light is also called solar energy

Today in class, a student asked whether the positive charge of the presequence of proteins being imported into the mitochondria was inhibitory for entry into the intermembrane space because of the positive charge present in this compartment of the mitochondria. How do proteins get past this? Wouldn't the net positive charge be inhibitory to import through the TOM complex?

Answers

Answer:

Mitochondrial proteins enter the organelle through channels formed by membrane proteins present in its inner and outer membranes.

Explanation:

All the biological membranes have lipid bilayer with the non-polar core that does not allow entry of charged and large substances. Mitochondrial proteins are synthesized in the cytosol and the unfolded proteins bind to the chaperons that deliver them to the receptors present in the outer mitochondrial membrane.

The receptor moves the protein to the membrane channels formed by integral membrane proteins of inner and outer mitochondrial membranes. The proteins enter the intermembrane space and are targeted to the inner membrane through channels while chaperons are left outside only.