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zloy xaker [14]
3 years ago
5

When does the cell have to se active transport

Biology
1 answer:
gulaghasi [49]3 years ago
4 0
To move molecules across the membrane against a gradient
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3 years ago
Both human beings and snakes have backbones,but snakes can perform more flexible movements than human beings.Why?
Mademuasel [1]

Bones of snakes are very loosely fused together like in humans. Hence these bones can move individually allowing the snakes to be really flexible. The ribs of snakes do not join like those of humans but instead, have free ends and do not have a sternum.

6 0
3 years ago
Which directional terms best describe the location of the sternum in relation to the vertebral column? in the axial region of th
liraira [26]

Answer:

Anterior

Explanation:

In anatomical terminology there are several words to indicate the position or part of the body that is being mentioned in a more specific and precise way, a group of these terms are called directional terms, they focus on the position of a specific part, one of the words in this group is "anterior" it basically means "in front of". The sternum is in front of the vertebral column.

3 0
3 years ago
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The accidental introduction of invasive species of plants and animals often
RSB [31]

Answer: N. pubens has found a place within the existing food web in its new environment.

Explanation:

The statement that best explains the impact that N. pubens has on its environment is that "N. pubens has found a place within the existing food web in its new environment".

From the information given, it's stated that the Rasberry crazy ant (Nylanderia pubens) was accidentally introduced in Texas and it attacks livestock, displace existing species, and damage electrical equipment.

It's further stated that it consumes "honeydew," a sugary liquid substance secreted as a waste product by aphids, which suck the sap out of plants.

This shows that it has found a place within the existing food web in its new environment.

8 0
2 years ago
Molecular clocks
goblinko [34]
Molecular clocks B. TAKE ADVANTAGE OF THE FACT THAT ALL MUTATIONS HAPPEN AT A STEADY RATE.

The molecular clock is a technique used involving the mutation rate of biomolecules to deduce when in prehistoric times have two or more lifeforms diverged. 
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3 years ago
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