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3 years ago

What organelles are in a white blood cell ?

1 answer:

7 0

Lysosomes are found in white blood cells and is what provides the enzymes need to consume the foreign object that it finds in the body.

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If potatoes only grow in warm weather, why can we get them in the winter?

Ksivusya [100]

If you plant your potatoes in late August, while it is still hot, you may still have them in the cooler months after. Cool weather doesn't really harm potatoes, they can still grow then, it is only when it is frosty that potatoes die off. The foliage will die, but the potatoes will remain securely underground until you are ready to dig them out. Additionally, potatoes can be grown indoors so that you can always have them.

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3 years ago

Mackenzie likes to study alone in a room in her school's library, but it's been in use the past few times she’s tried to study t

Elden [556K]

she should get out of her comfort zone and try new places that could also work, like an empty class or outside

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3 years ago

In skeletal muscle Catt is essential for the contraction process. For skeletal

zaharov [31]

Answer:

The source of Calcium (Ca⁺⁺) for the skeletal muscle cells is the sarcoplasmic reticulum, the main store of intracellular Ca⁺⁺.

Explanation:

Calcium (Ca⁺⁺) is an ion that plays an important role in muscle contraction, a process that requires high cytoplasmic concentrations of this ion to promote myofibrillary activity.

The sarcoplasmic reticulum (SR) -equivalent to the endoplasmic smooth reticulum- is an organelle that regulates the contractile activity of skeletal muscle. The two terminal cisterns of the SR attach to the T-tube, forming a triad, which surrounds the myofibrilla.

Once the muscle cell receives the signal to contract, the Ca⁺⁺ channels are opened and allow Ca⁺⁺ to enter the cell, promoting the exit of this cation from the SR and increased its cytoplasmic levels. This stimulates muscle contraction.

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4 years ago

What are plastids?name their types.

MatroZZZ [7]

Answer:

A double membrane bound organelle involved in the synthesis and storage of food, and is commonly found within the cells of photosynthetic organisms, like plants. Supplement. One of the distinctive features of a plant cell is the presence of plastids.Types of Plastids

Chloroplasts.

Chromoplasts.

Gerontoplasts.

Leucoplasts.

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3 years ago

in eukaryotes, genetic material is packaged in the nucleus. which group accurately lists the levels of the packaging in order of

vredina [299]

The DNA molecules are often fitted into the nucleus through packaging into a compressed and compact structure. The group that accurately lists the levels of the packaging in order of increasing size are nucleotide, DNA duplex, nucleosome, chromatin, chromosome.

Chromosomal DNA is often packaged into a nuclei that is microscopic in nature through the help of histones.

In the DNA packaging inside the nucleus, the cells folds or wrap their DNA strands around scaffolding proteins to form a coiled condensed structure. The structure is known as chromatin.

The full question is below

Which one of the following MOST accurately lists the components in order of increasing size?

A. chromosome, chromatin, nucleosome, DNA duplex, nucleotide

B. nucleotide, DNA duplex, nucleosome, chromatin, chromosome

C. nucleotide, DNA duplex, chromatin, nucleosome, chromosome

D. nucleotide, nucleosome, DNA duplex, chromatin, chromosome

E. chromosome, nucleosome, chromatin, DNA duplex, nucleotide

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brainly.com/question/10194046

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3 years ago