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Novosadov [1.4K]
3 years ago
5

Gina is studying a cell under a powerful microscope. The cell does not contain membrane-bound organelles.

Biology
2 answers:
Rainbow [258]3 years ago
6 0

Answer:

a plant

Explanation:

Alenkasestr [34]3 years ago
5 0
What is a prokaryotic cell
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Answer:

Plant cells have a cell wall and chloroplasts and the cell wall gives the cell a rectangular shape unlike animal cells which have a round shape because we only have a cell membrane.

3 0
3 years ago
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True or False: Metals have a higher melting point than water.
OLEGan [10]
The more energy needed, the higher the melting point or boiling point . As metals are giant lattice structures, the number of electrostatic forces to be broken is extremely large, and so metals have high melting and boiling points.

i would go with true.
6 0
3 years ago
When blood clots, an enzyme is activated to change a protein from one form into another.
exis [7]

Answer:

<em>Hey </em><em>mate!</em><em>!</em>

<h2><em>Process </em><em>of </em><em>blood-clotting</em></h2>

<em>The </em><em>mechanism</em><em> </em><em>to </em><em>prevent</em><em> </em><em>excessive</em><em> </em><em>loss </em><em>of </em><em>blood </em><em>from </em><em>the </em><em>body </em><em>is </em><em>called </em><em>blood </em><em>clo</em><em>tting.</em>

<h3><em>Steps </em><em>in </em><em>blood </em><em>clotting</em><em>:</em></h3>
  • <em>At </em><em>the </em><em>site </em><em>of </em><em>cut,</em><em> </em><em>damaged </em><em>cells </em><em>and </em><em>platelets</em><em> </em><em>release </em><em>thr</em><em>o</em><em>m</em><em>b</em><em>o</em><em>plas</em><em>t</em><em>i</em><em>n</em><em>.</em>
  • <em>This </em><em>t</em><em>hrombop</em><em>l</em><em>a</em><em>s</em><em>t</em><em>i</em><em>n</em><em> </em><em> </em><em>with </em><em>the </em><em>help </em><em>of </em><em> </em><em>calcium </em><em>ions,</em><em>converts </em><em>prothrombin</em><em> </em><em>into </em><em>thrombin.</em>
  • <em>In </em><em>the </em><em>presence</em><em> </em><em>of </em><em>calcium </em><em>ions,</em><em>thrombin </em><em>reacts </em><em>with </em><em>soluble </em><em>fibrinogen </em><em>and </em><em>converts </em><em>it </em><em>into </em><em>insoluble </em><em>fibrin.</em>
  • <em>Fibrin </em><em>is </em><em>a </em><em>solid </em><em>substance </em><em>which </em><em>forms </em><em>threads </em><em>and </em><em>a </em><em>meshwork </em><em>at </em><em>the </em><em>site </em><em>of </em><em>cut.</em>
  • <em>Blood </em><em>cells </em><em>trapped </em><em>in </em><em>the </em><em>network </em><em>of </em><em>fibrin.The </em><em>blood </em><em>shrinks </em><em>and </em><em>squeezes </em><em>out </em><em>the </em><em>rest </em><em>of </em><em>plasma </em><em>in </em><em>the </em><em>form </em><em>of </em><em>clear </em><em>liquid.</em>
  • <em>The </em><em>solid </em><em>mass </em><em>which </em><em>is </em><em>left </em><em>behind </em><em>is </em><em>called </em><em>clot.</em>

<em>Hope </em><em>this </em><em>helps </em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

<em>Good </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em><em>.</em><em>.</em>

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when salmonella bacteria are ingested, they pass through a person's stomach and colonize the small and large intestine. there, the bacteria invade the intestinal mucosa and proliferate. the bacteria can invade the lymphoid tissues of the gastrointestinal tract and spread to the bloodstream.

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Why do leaves not fall off broken branches\?
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<em>Leaves fall from broken branches only if they were dry.Any others will not fall</em>
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