Mitochondria and chloroplast are structures found in the eukaryotic cells. What is the theory regarding their origins?

Biology

1 answer:

REY [17]2 years ago

4 0

Answer:

The endosymbiotic theory explains the origins of eukaryotic cells.

Explanation:

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Which of these micropipetters would serve best to deliver 55 microliters?a. 0.5 to 10 µL micropipetter b. 10 - 100 µL micropipet

netineya [11]

Answer:

b. 10 - 100 µL micropipetter

Explanation:

The micropipetters that would serve best to deliver 55 microliters would be the one which has a volume capacity of 10-100 µL.

This is because it will be easier to measure 55 micro liters from the Pipette which has a standard range of 10-100 microliter.

0.5 to 10 µL doesn’t fall within the range and it will be very hard measuring the volume.

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2 years ago

How does the skeletal system of an embryo differ from that of an adult?

fredd [130]

Almost the entire system of an embryo is made of cartilage, whereas that of an adult is mostly made of bones.

An embryo is a multicellular diploid eukaryote in an early stage of embryogenesis, or development. In general, in organisms that reproduce sexually, an embryo develops from a zygote, the single cell resulting from the fertilization of the female egg cell by the male sperm cell.

Biologically, an adult is a human being or other organism that has reached sexual maturity.

The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

6 0

3 years ago

With the help of labelled diagram explain the menstrual cycle in adolescent girls

MissTica

Answer:

it is diagram okk

Explanation:

female reproductive system undergoes some changes and those changes repeat at interval of every 28-30 days. this repetative changes are called menstrual cycle. it is natural process, controlled by four hormones. those four hormones follicle stimulating hormone,luteinizing hormone, estrogen and progesterone. one of several follicle in ovary starts to develop along with oocyte present in it,under effect of follicle stimulating hormone. developing follicle secrets estrogen. endometrium of uterus starts to regenerate under effect of estrogen. it bursts under effect of luteinizing hormone and oocyte is released. this is ovulation. remaining tissues of burst follicle forms corpus luteum. corpus luteum starts to secrets progesterone. endometrial glands secrets their secretion under effect of progesterone. such endometrium is ready for implantation of embryo.