SA
Sadia Afrin
Answers (6)
SA
Answered
Which of the following is true about deuterostomes?
A) Deuterostomes have two tissue layers.
B) Cleavage is spiral.
C) The first opening during embryonic development becomes the anus.
D) The mesoderm arises from cells located near the embryonic blastopore.
E) Deuterostomes include the ecdysozoa and the spiralia.
A) Deuterostomes have two tissue layers.
B) Cleavage is spiral.
C) The first opening during embryonic development becomes the anus.
D) The mesoderm arises from cells located near the embryonic blastopore.
E) Deuterostomes include the ecdysozoa and the spiralia.
On Jul 23, 2024
C
SA
Answered
The maintenance of a high ATP to ADP ratio within cells ensures that
A) the hydrolysis of ADP to ATP will be strongly exergonic.
B) the hydrolysis of ATP to ADP will be strongly exergonic.
C) the hydrolysis of ATP to ADP will be strongly endergonic.
D) the hydrolysis of ADP to ATP will be an energy releasing reaction.
E) the conversion of ADP to ATP will proceed spontaneously.
A) the hydrolysis of ADP to ATP will be strongly exergonic.
B) the hydrolysis of ATP to ADP will be strongly exergonic.
C) the hydrolysis of ATP to ADP will be strongly endergonic.
D) the hydrolysis of ADP to ATP will be an energy releasing reaction.
E) the conversion of ADP to ATP will proceed spontaneously.
On Jul 19, 2024
B
SA
Answered
Which statement about ecosystems is true?
A) Chemicals flow through ecosystems in a one-way direction and are not recycled.
B) Energy continually cycles through an ecosystem.
C) Some organisms can produce their own food and these organisms form the base of the food chain.
D) Within an ecosystem there is a community of organisms, but non-living components are absent.
E) The location of ecosystems around the world appears to be random. There is no relationship between ecosystem location and factors like climate.
A) Chemicals flow through ecosystems in a one-way direction and are not recycled.
B) Energy continually cycles through an ecosystem.
C) Some organisms can produce their own food and these organisms form the base of the food chain.
D) Within an ecosystem there is a community of organisms, but non-living components are absent.
E) The location of ecosystems around the world appears to be random. There is no relationship between ecosystem location and factors like climate.
On Jun 20, 2024
C
SA
Answered
Explain how the nuclear envelope of eukaryotic cells could have arisen.
On Jun 17, 2024
The cell membrane of a prokaryotic cell invaginated. As it invaginated it would have pinched away from the rest of the cell membrane. The portion that pinched inward would have been retained within the cell, potentially forming the nuclear envelope.
SA
Answered
The female condom is effective in preventing pregnancy as well as the transmission of many sexually transmitted diseases.
On May 21, 2024
True
SA
Answered
Neurons in the skin that are responsible for detecting pain are ________.
A) apolar
B) pseudo-unipolar
C) bipolar
D) multipolar
A) apolar
B) pseudo-unipolar
C) bipolar
D) multipolar
On May 18, 2024
B