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Keith_Richards [23]
3 years ago
8

Scientists use this word for any part of a cell enclosed by a membrane

Biology
1 answer:
masha68 [24]3 years ago
6 0
An organelle is the word that scientists use to describe a part of a cell that is enclosed by a membrane. A lysosome, nucleus and a mitochondria are all examples of organelles.
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Rock B reacts with hydrochloric acid. State the name of the rock B
choli [55]

Answer:

The sedimentary rock limestone which contains carbonate mineral Calcite and the metamorphic rocks which contain carbonate mineral Aragonite are the examples of rocks which react strongly with hydrochloric acid.

Explanation:

Rocks are naturally occurring structures formed on the Earth's crust and are composed of aggregate minerals. Classification of rocks: Igneous rocks - formed by cooling of magma on Earth's crust or seabed (basalts, gabbros, granite, etc), sedimentary rocks - formed over time by the accumulation of sediments from the weathering of existing rocks or fragments of minerals and organisms (mudstone, sandstone, shale, limestone, dolostone, siltstone, etc) and metamorphic rocks - transformed rocks formed from the existing rocks that are subjected to large pressures and temperatures (schists, gneiss, marble, etc).

The carbonate minerals like calcite, dolomite, aragonite, etc react with hydrochloric acid and release carbon dioxide gas bubbles. Calcite (calcium carbonate), which is found in igneous, metamorphic, and sedimentary rocks in a varying proportion reacts strongly with hydrochloric acid. So, the sedimentary rock Limestone which mainly contains calcite react strongly with the acid while Dolostone which mainly contains dolomite (calcium magnesium carbonate) reacts less vigorously. Another carbonate mineral aragonite, found in metamorphic rocks also reacts strongly with hydrochloric acid.

6 0
3 years ago
Skin tanning is an example of which adaptation technique?
faltersainse [42]

Answer:

\boxed{\mathbb{\pink{Structural_  adaptation}}}

6 0
2 years ago
Read 2 more answers
Please someone help me with this.
Luda [366]

The associations are involuntary, digestive tract and arteries  >> smooth; whereas voluntary, tendons, extensors >> skeletal and electrical nodes >> cardiac.

<h3>What are muscles?</h3>

Muscles are a special type of tissue that has the ability to contract in response to a given stimulus.

There are different three types of muscle fibers: cardiac muscle, skeletal muscle and smooth muscle.

Cardiac muscle and smooth muscle are involuntary muscles, whereas skeletal muscle is a voluntary muscle.

Learn more about skeletal muscle here:

brainly.com/question/1283837

6 0
2 years ago
What are the three sections of the small intestine and what role does each section play in digestion or absorption?
leva [86]

Answer:

The three sections of the small intestine are the duodenum,

Explanation:

The duodenum

It receives chyme from the stomachs

Its intestinal cells enzymes such as secrete amylase, sucrase, and lipase enzymes that break down fats and sugars.

The jejunum

It is covered in villi and microvilli giving the name THE PRINCIPAL SITE of digestion.

the ileum.

Aid absorption e.g. amino acids, lipids, fat-soluble vitamins, and vitamin B12.

8 0
3 years ago
Read 2 more answers
What is called when an organism has two identical alleles for a trait. TT or tt. RR or rr
Elina [12.6K]

Answer:

Heterozygous

Explanation:

Heterozygous Is when an organism has two identical alleles for a trait. TT or tt. RR or rr

6 0
3 years ago
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