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lidiya [134]
4 years ago
15

Human sperm cells ________ than egg cells

Biology
1 answer:
Luda [366]4 years ago
8 0
Human sperm cells are larger than egg cells

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Why do scientists refer to charles darwin’s ideas about evolution as the theory of evolution?
bearhunter [10]
<span>Charles Darwin theory is theory of biological </span>evolution, that explains how modern organisms evolved over long periods of time through descent from common ancestors. Evolution is the process of change over time and Darwin explains in his theory the changes in humans over time and <span>shows how the living world is constantly changing.</span> This is the reason why cientists refer to charles darwin’s ideas about evolution as the theory of evolution.
8 0
3 years ago
As a cell grows larger and accumulates more contents, will it need more or less cell membrane to survive?
Ganezh [65]

Answer:

As the plasma membrane grows and accumulates more contents it will require more cell membrane to survive.

Explanation:

Plasma membrane is functionally significant layer that surrounds the cytoplasm of a cell.Plasma membrane performs many important cellular functions.For example transport of specific substance in and out of the cell,contain various protein that act as receptor,the oligosaccharide side chain of the glycoprotein moiety present within the plasma membrane recognizes various bio active compounds.

    When a cell grow it increases in size beside increasing its cellular constituents.To surround or protect these cellular constituents more plasma membrane should be need by the cell for its survival.

   

8 0
4 years ago
In the generation of most anions, the energy change (kj/mol) that _______ an electron is ________.
stepan [7]

The answer is D. An anion is a negatively charged ion, which means it has accepted an extra electron (s) from a donor ion (cation). To add an electron, energy has to be released so that the electron can be less excited and go back to its orbital level. The released energy is equivalent to the energy required to remove the electron from its orbital level.

7 0
4 years ago
The advantage of the pentose phosphate pathway is that it produces all of the following except:
Fudgin [204]

Answer:

The correct answer is a. three ATPs

Explanation:

Pentose phosphate is also known as hexose monophosphate shunt and this pathway is the alternative pathway through which glucose is oxidized.  

Pentose phosphate pathways are used to produce many intermediated that contains 4 and 5 carbon sugars which are then used as the precursor for synthesis of amino acids and nucleic acids.  It also provides precursors for the synthesis of glucose.

NADPH is also produced in this pathway which is used for the reduction of molecules by providing a source of electrons. No ATP generation takes place during the pentose phosphate pathway.

So all the statements are true except a. three ATPs.

5 0
4 years ago
Are chemical messengers that are released in one tissue and transported in the bloodstream to alter the activities of specific c
Misha Larkins [42]
These are known as Hormones. Hormones are chemical messengers that are released in one tissue normally endocrine glands for example, adrenal glands, pituitary glands, and transported in the blood stream to alter the activities of specific cells in other tissues. Hormones serves as messengers, controlling and coordinating activities or processes such as growth, metabolism and fertility in the body.
6 0
3 years ago
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