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murzikaleks [220]
3 years ago
13

I need help with number 5 hurry plzzz

Biology
1 answer:
posledela3 years ago
8 0

Answer:

seven categories of classification

Explanation:

back in linneaus time there was only five categories. Class, order, genius, species, and variety.

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If Cas9 edits DNA, why is a molecule of RNA needed in a CRISPR complex?
pantera1 [17]

Explanation:

The use of CRISPR/Cas9 avoids the need for protein engineering to develop a site-specific nuclease against a specific DNA target sequence, requiring only the synthesis of a new piece of RNA. This dramatically simplifies and greatly reduces the time needed for gene editing design and implementation.

6 0
3 years ago
Clinical manifestations of hypocalcemia include which of the following? (Select all that apply.) Positive Trousseau sign Positiv
kumpel [21]

Answer:

Positive Trousseau sign

Positive Chvostek sign

Hyperactive reflexes.

Muscle twitching, Paresthesias

When the blood conce

Explanation:

When the blood ca+ concentration falls below  the standard of 4.4-4.5mg/dL,that is below 4.4mg/dL the clinical condition is called hypocalcemia. It is caused by hypothyroidism,due to  malfunction of the parathyroid gland.

Generally, Ca+ is needed for contraction of muscles by causing the fusion of the vesicles containing neurotransmitters to the presynaptic membrane for the passage of neuro transmitters  to fuse with the receptors on the sarcolemma to initiate  muscular contractions by opening of ligand gated Na+. It also interact with the ligand gated  sodium ion channels

Generally,Ca+ inhibits depolarization of ligand gated Na+ channels. Thus blocks the opening of these channels and therefore the rate of excitability.Therefore, If the is low serum levels of Ca+,There is increased in the threshold of depolarization because more ligand gated Na+ channels are opened,Thus their is increased excitability of nerves and muscles fibres therefore in the  clinical manifestations listed above.

It can be treated with infusion of Ca+ into the blood.

7 0
3 years ago
Where is the genetic material found? in all protists
lawyer [7]

Answer:

in the nucleus.

Explanation:

jm m l kkns

3 0
3 years ago
Read 2 more answers
On a lab bench, there are four balloons filled with identical volumes of different salt solutions: 0% (balloon A), 5% (balloon B
lys-0071 [83]
<h2>Osmosis.</h2>

Explanation:

The correct order of balloon volumes at equilibrium, from largest to smallest:

Balloon D  > Balloon C > Balloon B > Balloon A.

Osmosis is defined as the process of  movement of water molecules from the region of their higher concentration to the region of their lower concentration i.e. from a less concentrated concentrated solution to a solution with greater concentration through a semipermeable membrane.

So , In case of balloon A and B water will move out of them and at equilibrium it will have reduced volumes. However, A will lose more water that B.

In case of Balloon C no water movement will be observed it will remain constant.

In case of Balloon D, Water will move inside the balloon and its volume will increase.

Thus at equilibrium the  order of balloon volumes will be :

Balloon D  > Balloon C > Balloon B > Balloon A.

6 0
3 years ago
The Atom that is most closely associated to living things
liraira [26]

Oxygen, Carbon, Hydrogen, Nitrogen and Phosphorus.

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