After a sperm cell and an egg cell unite, _____ has occurred. asexual reproduction
fertilization
conjugation
pollination

Answers

Answer 1

Answer: In the sentence "After a sperm cell and an egg cell unite, _____ has occurred", the word that correctly completes the sentence is fertilization. Fertilization is the process in which two gametes (a sperm cell and an egg cell) unite. As the result of this process, zygote is created and the development of an embryo begins.

Answer 2

Answer:

Answer:

Fertilization

Explanation:

hp this helps!

Related Questions

When salts are dissolved in water, they _____. A. precipitate as compoundsB. separate into component atomsC. separate into ionsD. form acids and/or bases
Spittlebugs release foam to hide themselves in branches. What kind of adaptation is this?
Which of the following correctly describes the relationship between the stolon and hyphae in fungi? (2 points)Hyphae can grow to form a stolon above ground. Hyphae store the spores that are produced by the stolon. Hyphae are provided structural support by the stolon. Hyphae produce spores, and the stolon distributes them.
include T and B cells that are used to produce antibodies against antigens and destroy pathogens that enter the body.
__________ are areas around the world that support similar communities of species, and __________ are smaller, local communities within these areas.a. Biomes . . . ecosystems b. Elevations . . . biomes c. Biomes . . . elevations d. Ecosystems . . . climates

In the lock-and-key model of enzyme action, the ___________ fits into the __________ of the enzyme

Answers

Answer:

In the lock-and-key model of enzyme action, the substrate fits into the active site of the enzyme. Enzyme catalyzes a chemical reaction which starts with the binding of the substrate with the active site (specific region) present in the surface of the enzyme.

Some changes occur in the distribution of electrons in the chemical bonds which are present on the substrate and cause the reaction to leads the formation of products by the binding of the substrate to the enzyme.

The product which is released from the enzyme surface to regenerate the enzyme for next reaction cycle. The active site has unique ability means only one or few enzymes can react with similar compounds.

In the lock and key theory, the enzyme is the lock and key is the substrate. Which means only correct size substrate can fit into the active site of the enzyme.

In the lock-and-key model of enzyme action, the "Substrate" fits into the "Active site" of the enzyme

Hope this helps!

If you have a heat engine with a hot reservoir of 515°C and a cold reservoir of 190°C, what is the thermal efficiency of the system?

Answers

The equation for the thermal efficiency of a system is given by n = Tc/Thx100 where n is the thermal efficiency, Tc is the temperature of the cold reservoir and Th is the temperature of the hot reservoir. Dividing 190 by 515 gives us an efficiency of 36.9%.

Answer: A.

63.1%

Explanation: edmentum

The energy used to obtain, transfer, andtransport materials within an organism comes
directly from
(1) ATP (3) sunlight
(2) DNA (4) starch

Answers

the energy used to obtain, transer, and transport materials within an organism is ATP energy

The leaves of a plant appear to be green because light waves areA. reflected
b. absorbed
c. both absorb and reflected
d. neither absorb or reflected

Answers

i believe a reflected , because green light is not absorbed but reflected .

Answer:

La respuesta es la B /The answer is B

Explanation:

La clorofila, el pigmento que hace que las hojas sean verdes, absorbe luz en las longitudes de onda violeta y azul y asimismo en el rojo; dado que refleja la luz verde, parece verde.

Chlorophyll, the pigment that makes the leaves green, absorbs light in the violet and blue wavelengths and also in the red; Since it reflects green light, it looks green.

Which best describes the role of immunosuppressants in transplant surgeries?

Answers

Immunosuppressants, by it's name itself, suppresses or inhibits the immune system for functioning in a certain amount of time. It is administered usually during transplant surgeries, so that the new cells of the organ does not get killed by the recipient's immune system.

Which layer of the epidermis is known as the grainy cells

Answers

Answer: The stratum granulosum

Explanation: It is called the grainy layer because it contains keratin-filled granules

Final answer:

The 'grainy cells' layer of the epidermis is the stratum granulosum. This layer gets its grainy look from the keyword proteins keratin and keratohyalin produced by the keratinocytes as they move from the stratum spinosum. These proteins create granules within the cells, giving the layer its appearance.

Explanation:

The layer of the epidermis known as the 'grainy cells' is the stratum granulosum. This layer gains its grainy appearance due to changes in the keratinocytes as they move from the stratum spinosum. These cells, which are three to five layers deep, become flatter and their cell membranes thicken. Additionally, they generate a large amount of the proteins keratin and keratohyalin. These proteins accumulate within the cells, creating the appearance of granules, hence the 'grainy' description. As the cells die, they leave behind keratin, keratohyalin and their cell membranes to form the subsequent layers of the epidermis: the stratum lucidum, the stratum corneum, and other structures such as hair and nails.