Science related! I am in 8th grade btw.

In an ________ solution, red blood cells ________. Group of answer choices hyposmotic, lose water and shrivel isomotic, have a n

lozanna [386]

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Q. In an ________ solution, red blood cells ________. Group of answer choices:

Hyposmotic, lose water and shrivel
Isomotic, have a normal shape ✔️
Isosmotic, swell and may burst
Hyperosmotic, have a normal shape
Isosmotic, lose water and shrivel

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In an isosmotic solution, red blood cells have normal shape.

Option B

<h3>Explanation:-</h3>

Osmosis : The movement of the solvent or water molecules from a solution of their higher concentration to a solution of lower concentration through a semipermeable membrane.

❍ Depending upon the osmotic concentration, There are three types of solution and their result when cell is keot inside them:

Hyposmotic (Water enters, Swells up)
Isosmotic(Equal flow, No change)
Hyperosmotic(Water comes out, shrinkage)

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3 0

3 years ago

If scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to

Alexxx [7]

Annelids, I believe.

5 0

3 years ago

Which of the following enzymes serve as catalysts in metabolism?

choli [55]

Amylase, lactase, and pepsin serve as catalysts in metabolism.

I hope this helps!

4 0

3 years ago

You hypothesize that a transcriptional regulator may control expression of specific genes in LB medium, and want to find out wha

s344n2d4d5 [400]

Answer:

if the promoterless lacZ is inserted close to any gene(s) or operon, then the laz gene will also be transcribed when the operon gets expressed. The polycystronic RNA will eventually produce a beta-galactosidase protein(product of lacZ gene) which will cleave X-Gal( structural analog to lactose), which will produce blue chromogenic substance.

prepare LB agar. Allow it to cool, add X-gal before it solidifies, pour to plates.

create grids and patch plate each strain on it. Just pick the strain that looks blue, amplify the sequence upstream of the lacZ and sequence it.

Explanation:

Just pick the strain that looks blue, amplify the sequence upstream of the lacZ, and sequence it.

7 0

3 years ago

Match the description to the part of bone.

Nikitich [7]

Answer:

strong, dense outer layer of a bone- compact bone

tissue in the hollow part of the bone- bone marrow

lightweight, inner layer of a bone that

contains many small spaces- spongy bone

Explanation:

Compact bone is also known as cortical bone and is a major property and source of skeletal frames in the body due to its strong, dense outer layer.

Bone marrow is the tissue in the hollow part of the bone. It is important as it helps in the production of blood cells

Spongy bone is also known as cancellous bone. It is the lightweight, inner layer of a bone that contains many small spaces which contains a high proportion of bone marrow.

3 0

3 years ago