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kramer
3 years ago
8

What is the orign of a compound microscoppe​

Biology
1 answer:
abruzzese [7]3 years ago
8 0

Answer:

Explanation:

Dutch spectacle makers Zaccharias Janssen and Hans Lipperhey are noted as the first men to develop the concept of the compound microscope

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How do the buds of an organism such as hydra compare to the parent?
Kipish [7]
Hydra make offspring by forming buds that break off and grow into new hydra
5 0
3 years ago
The fundamental resolution of an optical instrument is set by
yaroslaw [1]

Answer:

The wave nature of light is the fundamental resolution of an optimal instrument.

Explanation:

All the optical instruments are working on light that's why they are known as optical instrument. Optics means the behavior of light or sight. Light is an electromagnetic radiation which comes in the category of electromagnetic spectrum. It travels in the form of wavelength.

So, optical instruments are based on wave nature of light.

3 0
3 years ago
Read 2 more answers
A small percentage of the body’s iron supply circulates freely in the blood, bound to a protein called transferrin. Transferrin
german

Answer:

What best describes how transferrin is transported through the erythrocyte plasma membrane is receptor-mediated endocytosis.

Explanation:

The incorporation of transferrin across the erythrocyte membrane depends on a transferrin receptor expressed on the surface of the membrane. The specific receptor recognizes the presence of iron-charged transferrin, transferin diferrica, incorporating it into the cell by endocytosis. Once in the cytoplasm, the iron is dissociated from the transferrin.

Free transferrin is called apotransferrin. The transferrin receptor has a high affinity for transferrin di-ferrica, which facilitates its incorporation by endocytosis, and the release of apotransferrin into the extracellular space.

The other options are not correct because:

<em>     A. </em><u><em>Exocytosis</em></u><em> implies the exit of substances from the cell.</em>

<em>     B. </em><u><em>Pinocytosis</em></u><em> involves the invagination of the membrane to incorporate soluble substances into the cell.</em>

<em>     C. </em><u><em>Phagocytosis</em></u><em> is the incorporation of solid substances by invagination of the membrane.</em>

4 0
3 years ago
A diploid cell (2N) in G1 phase of the cell cycle has how many alleles of each gene?
Cerrena [4.2K]

Answer:

46 chromosomes

Explanation:

<em>I. G1 phase (Gap 1) - Cellular contents excluding the chromosomes, are duplicated. II. S phase (DNA Synthesis) - Each of the 46 chromosomes is duplicated by the cell.</em>

7 0
3 years ago
Hair is produced at the base of hair follicles from columns of cells that die when they are filled with keratin.
Lilit [14]
False, then the second one the answer is sweat glands
4 0
3 years ago
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