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raketka [301]
3 years ago
9

Just by looking at the color of a freshly drawn blood sample, how could you distinguish between blood that is well oxygenated an

d blood that is poorly oxygenated?
Biology
1 answer:
Wittaler [7]3 years ago
6 0

Answer:

Explanation:

There are two types of blood that flows through our bodies: oxygenated and deoxygenated. Oxygenated blood is the one that is pumped in the left side of the atrium in the heart. As its name tells us, is the one that is highly with oxygen and low in carbon dioxide. Normally a sample of an oxygenated blood will be very bright in red due to the amount of blood cells in it. Deoxygenated blood is the one that is pumped in the right side of the atrium in the heart. This blood is the one that is low in oxygen and high in carbon dioxide. It is also known as the venous blood. Normally a sample of a deoxygenated blood will be darker almost going on blue.

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The answer is bb (the only possible option because all the others suggest the woman’s eyes are brown)
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2 years ago
What are the four carbon macromolecules the body uses and makes?
aliya0001 [1]

Living things are made of types of molecules, known as macromolecules.

There are four major classes of biological macromolecules:

carbohydrates

lipids

proteins

nucleic acids

Each of these types of macromolecules performs a wide array of important functions within the cell; a cell cannot perform its role within the body without many different types of these crucial molecules. In combination, these biological macromolecules make up the majority of a cell’s dry mass. (Water molecules make up the majority of a cell’s total mass.) All the molecules both inside and outside of cells are situated in a water-based (i.e., aqueous) environment, and all the reactions of biological systems are occurring in that same environment.

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3 years ago
EVOLUTION QUESTION FOR PAST APES/AP BIO STUDENTS!!!
valentinak56 [21]

Answer:

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Explanation:

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2 years ago
Rank the order in which the earliest organisms evolved.
Black_prince [1.1K]

The order in which the earliest organisms evolved -

  • Archaea and bacteria
  • Protists
  • Fungi and shell-less invertebrates
  • Green algae
  • Shelled Invertebrates

On the earth, various kinds of organisms evolve at different geological times, and on their evolution, they consider the oldest or youngest organisms:

  • Archaebacteria and bacteria was the oldest living organism on earth was, they lacked a membrane-bound nucleus and cell.
  • The protists evolved after the bacteria, they were multicellular prokaryotic organisms.
  • Fungi and the shell-less invertebrate, much-developed organisms in terms of body organization and structure. These have membrane-bound, well-defined cell membranes, and a nucleus. They even had a tissue level of organization.
  • Green algae evolve after protists which belong to the division Thallophyta of the plant kingdom. These are photosynthetic as they have chlorophyll in the cell.
  • Shelled Invertebrates are the youngest organisms that evolved recently among these.

Thus, the correct order is -

  • Archaea and bacteria
  • Protists
  • Fungi and shell-less invertebrates
  • Green algae
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Learn more about geological time scale:

brainly.com/question/16528968

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3 years ago
Which features are usually associated with karst topography?
xxTIMURxx [149]

Answer:

caves and sinkholes

Explanation:

caves and sinkholes are associated with karst topography because they are some of the main features.

5 0
3 years ago
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