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3 years ago

Which of the following planets has very little atmosphere?

Biology

2 answers:

ruslelena [56]3 years ago

5 0

Answer:Mars, has a thin atmosphere composed of about 95 percent carbon dioxide

Explanation:The leading theory is that Mars' light gravity, coupled with its lack of global magnetic field, left the atmosphere vulnerable to pressure from the solar wind, the constant stream of particles coming from the sun.

crimeas [40]3 years ago

4 0

Answer:

Explanation:

Mercury’s atmosphere containing oxygen (42%), sodium (29%), hydrogen (22%), helium

(6%), potassium (0.5%) and water vapor.

2. Venus

The atmosphere of Venus is one of the most chemically complex and dynamically active

planetary atmosphere in the solar system. The Venusian atmosphere consist of carbon

dioxide (95.5%), nitrogen (3.5%), sulfur dioxide (0.015%), argon (0.007%), carbon monoxide

(0.002%), helium (0.001%), neon (0.001%).

3. The Earth

The atmosphere of Earth is mainly composed of nitrogen (78.08%) and oxygen (20.95%).

The remaining part of the atmosphere divided into the permanent and the variable

constituents. The permanent constituents consist of the five noble gases, argon, neon,

helium, krypton and xenon also other materials such as carbon dioxide, hydrogen, methane,

nitrous oxide and radon. The variable constituents of the atmosphere are water, carbon

monoxide and ozone.

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Which would not be found in pancreatic juice secreted into the duodenum?

AURORKA [14]

Answer:

The answer is insulin.

Explanation:

Pancreatic juice is an enzyme containing secretion produced by the pancreas into the small intestine. Enzymes in the pancreas help in digesting proteins, carbohydrates and fats. The constituent enzymes are as follows:

Trypsinogen and Chymotrypsinogen: Precursors of the proteases, trypsin and chymotrypsin that digest proteins. They are released as precursors to protect the intestinal lining. Enterokinase, an enzyme secreted by small intestine's epithelial cells, activates these precursor.
Lipase: Enzyme that digests lipids by hydrolysing triglycerides into 2-monoglyceride and two free fatty acids.
Amylase that helps in digesting any left over carbohydrates and complex starch.

Insulin:

Insulin can never be part of pancreatic juice because it is a hormone, not an enzyme. Hormones are chemical messengers secreted only in blood. Insulin is a hormone secreted by the pancreas to lower blood glucose levels by binding to insulin receptors on cells and stimulating the intake of glucose through glucose transport channels (GLUTs) in the cell membrane.

4 0

3 years ago

Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered p

Rom4ik [11]

Answer:

genes for flower color and edge shape are linked. They do not assort independently.

Explanation:

<u>Available data:</u>

test cross between a purple-flowered pea plant having serrated leaves and a white-flowered pea plant having smooth edges.
serrated leaves → dominant trait
smooth edges → recessive trait
purple color → dominant trait
white color → recessive trait
F1: 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth.

There are two genes involved in the cross. The expected ratios are 1:1:1:1 because we assume genes assort independently. However, we see a different phenotypic distribution. When phenotypic ratios differ from the expected ones, it means that genes are linked.

To know if two genes are linked in the same chromosome, we must observe the progeny distribution. If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. But if instead of this distribution, we observe a different one, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent

5 0

3 years ago

In your own words, explain why theories cannot become laws. Include one example

KengaRu [80]

Theories cant become laws because they are just testable questions and opinions

5 0

3 years ago

The students in Mrs. Cosby's class were observing worms. The students wanted to find out if a worm's body weight is related to h

REY [17]

After the worms have finished eating their food, the students must now weigh the worms and record this data. They can then compare these new weights to the starting weights of the worms and see if it demonstrates their hypothesis. Hope this helped :)

7 0

3 years ago

Read 2 more answers

Which kingdom of organisms is photosynthetic, multicellular, eukaryotic and non- motile?

Blizzard [7]

Answer:

kingdom plantae

Explanation:

They are photosynthetic multicellular organisms that are eukaryotic.

5 0

3 years ago